American Dryer Clothes Dryer AD 120ES User Manual

AD-1 2 0 ES  
In st allat ion / Operat ors Man u al  
(Ext en ded Side Pan els)  
WARNING: For your safety the  
AVERTISSEMENT: Assurez-vous de bien  
suivre les instructions données dans cette  
notice pour réduire au minimum le risque  
d’incendie ou d’explosion ou pour éviter tout  
dommage matériel, toute blessure ou la mort.  
information in this manual must be  
followed to minimize the risk of fire or  
explosion or to prevent property damage,  
personal injury or death.  
Do not store or use gasoline or other flammable  
vapor and liquids in the vicinity of this or any  
other appliance.  
Ne pas entreposer ni utiliser d’essence ni  
d’autres vapeurs ou liquides inflammables dans  
le voisinage de cet appareil ou de tout autre  
appareil.  
WHAT DO YOU DO IF YOU SMELL GAS  
QUE FAIRE SI VOUS SENTEZ UNE ODEUR  
DE GAZ:  
* Do not try to light any appliance.  
* Do not touch any electrical switch; do not use  
any phone in your building.  
* Clear the room, building or area of all  
occupants.  
* Immediately call your gas supplier from a  
neighbor's phone. Follow the gas supplier's  
instructions.  
* If you cannot reach your gas supplier, call the  
fire department.  
* Ne pas tenter d’allumer d’appareil.  
* Ne touchez à aucun interrupteur. Ne pas  
vous servir des téléphones se trouvant dans  
le bâtiment où vous vous trouvez..  
* Évacuez la pièce, le bâtiment ou la zone.  
* Appelez immédiatement votre fournisseur de  
gaz depuis un voisin. Suivez les instructions  
du fournisseur.  
* Si vous ne pouvez rejoindre le fournisseur  
de gaz, appelez le service des incendies.  
Installation and service must be performed by a  
qualified installer, service agency or the gas  
supplier.  
L’installation et l’entretien doivent être assurés  
par un installateur ou un service d’entretien  
qualifié ou par le fournisseur de gaz.  
For replacement parts, contact the distributor from which the dryer  
was purchased or  
American Dryer Corporation  
88 Currant Road  
Fall River MA 02720-4781  
Telephone: (508) 678-9000 / Fax: (508) 678-9447  
E-mail: techsupport@amdry.com  
070395  
ADC Part No. 112185  
 
IMPORTANT  
YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and THE GAS  
SUPPLY or THE STEAM SUPPLY BEFORE ANY COVERS or GUARDS ARE  
REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING, ADJUST-  
ING, INSTALLATION, or TESTING OF ANY EQUIPMENT per OSHA (Occupational  
Safety and Health Administration) STANDARDS.  
«Attention: Lor des opérations d’entretien  
des commandes étiqueter tous fils avant  
de les déconnecter. Toute erreur de  
câblage peut étre une source de danger et  
de panne.»  
“Caution: Label all wires prior to  
disconnection when servicing controls. Wiring  
errors can cause improper operation.”  
CAUTION  
DRYERS SHOULD NEVER BE LEFT UNATTENDED WHILE IN OPERATION.  
WARNING  
CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR NEAR THE DRYER(S).  
CHILDREN SHOULD BE SUPERVISED IF NEAR DRYERS IN OPERATION.  
FOR YOUR SAFETY  
DO NOT DRY MOP HEADS IN THE DRYER.  
DO NOT USE DRYER IN THE PRESENCE OF DRY CLEANING FUMES.  
WARNING  
UNDER NO CIRCUMSTANCES should the door switch or the heat circuit devices  
ever be disabled.  
 
WARNING  
The dryer must never be operated with any of the back guards, outer tops, or service  
panels removed. PERSONAL INJURY or FIRE COULD RESULT.  
WARNING  
DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER/SCREEN IN  
PLACE, EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED.  
IMPORTANT  
PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment and/or  
specified in the installation and operator's manual included with the dryer.  
Dryers must not be installed or stored in an area where it will be exposed to water or weather.  
The wiring diagram for the dryer is located in the front electrical control box area.  
 
Table of Contents  
SECTION I  
IMPORTANT INFORMATION  
A. RECEIVING and HANDLING ...................................................................................................................................................... 2  
B. SAFETY PRECAUTIONS .............................................................................................................................................................. 3  
SECTION II  
SUPER AD-30 SPECIFICATIONS  
A. SPECIFICATIONS (Gas and Steam Models) .............................................................................................................................. 5  
B. COMPONENT IDENTIFICATION ............................................................................................................................................... 7  
SECTION III  
INSTALLATION PROCEDURES  
A. LOCATION REQUIREMENTS .................................................................................................................................................... 9  
B. UNPACKING/SETTING UP .........................................................................................................................................................10  
C. DRYER ENCLOSURE REQUIREMENTS ...............................................................................................................................12  
D. FRESH AIR SUPPLY ....................................................................................................................................................................13  
E. EXHAUST REQUIREMENTS ....................................................................................................................................................14  
F. ELECTRICAL INFORMATION .................................................................................................................................................21  
G. GAS INFORMATION ...................................................................................................................................................................27  
H. STEAM INFORMATION .............................................................................................................................................................31  
I. PREPARATION FOR OPERATION / START-UP .....................................................................................................................35  
J. PREOPERATIONAL TESTS .......................................................................................................................................................36  
K. OPERATING INSTRUCTIONS ...................................................................................................................................................39  
L. SHUT DOWN INSTRUCTIONS ..................................................................................................................................................40  
SECTION IV  
SERVICE / PARTS INFORMATION  
A. SERVICE ........................................................................................................................................................................................41  
B. PARTS .............................................................................................................................................................................................41  
SECTION V  
WARRANTY INFORMATION  
A. RETURNING WARRANTY CARD(S) ......................................................................................................................................42  
B. WARRANTY ..................................................................................................................................................................................42  
C. RETURNING WARRANTY PART(S) ........................................................................................................................................42  
SECTION VI  
ROUTINE MAINTENANCE  
A. CLEANING ....................................................................................................................................................................................44  
B. ADJUSTMENTS ............................................................................................................................................................................46  
C. LUBRICATION .............................................................................................................................................................................46  
SECTION VII  
TROUBLESHOOTING...................................................................................................................... 47  
SECTION VIII  
REVERSING TIMER SPIN / DWELL ADJUSTMENTS.................................................................. 58  
SECTION X  
PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS.................. 59  
 
SECTION I  
IMPORTANT INFORMATION  
A. RECEIVING and HANDLING  
The dryer is shipped in a protective stretch wrap cover with protective cardboard corners and top cover  
(or optional box) as a means of preventing damage in transit. Upon delivery, the dryer and/or packaging, and  
wooden skid should be visually inspected for shipping damage. If any damage whatsoever is noticed, inspect  
further before delivering carrier leaves.  
Dryers damaged in shipment:  
1. ALL dryers should be inspected upon receipt and before they are signed for.  
2. If there is suspected damage or actual damage, the trucker's receipt should be so noted.  
3. If the dryer is damaged beyond repair, it should be refused. Those dryers which were not damaged in a  
damaged shipment should be accepted, but the number received and the number refused must be noted  
on the receipt.  
4. If you determine that the dryer was damaged after the trucker has left your location, you should call the  
delivering carrier's freight terminal immediately and file a claim. The freight company considers this  
concealed damage. This type of freight claim is very difficult to get paid and becomes extremely difficult  
when more than a day or two passes after the freight was delivered. It is your responsibility to file freight  
claims. Dryer/parts damaged in transit cannot be claimed under warranty.  
5. Freight claims are the responsibility of the consignee, and ALL claims must be filed at the receiving end.  
ADC assumes no responsibility for freight claims or damages.  
6. If you need assistance in handling the situation, please contact the ADC Traffic Manager at  
(508) 678-9000.  
IMPORTANT: The dryer must be transported and handled in an upright position at all times.  
2
 
B. SAFETY PRECAUTIONS  
WARNING: For your safety, the information in this manual must be followed to minimize  
the risk of fire or explosion or to prevent property damage, personal injury, or  
loss of life.  
WARNING: The dryer must never be operated with any of the back guards, outer tops,  
or service panels removed. PERSONAL INJURY or FIRE COULD  
RESULT.  
1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other  
appliance.  
2. Purchaser/user should consult the local gas supplier for proper instructions to be followed in the event  
the user smells gas. The instructions should be posted in a prominent location.  
3. WHAT TO DO IF YOU SMELL GAS..  
a. DO NOT try to light any appliance.  
b. DO NOT touch any electrical switch.  
c. DO NOT use any phone in your building.  
d. Clear the room, building, or area of ALL occupants.  
e. Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.  
f. If you cannot reach your gas supplier, call the fire department.  
4. Installation and service must be performed by a qualified installer, service agency, or gas supplier.  
5. Dryer(s) must be exhausted to the outdoors.  
6. Although ADC produces a very versatile machine, there are some articles that, due to fabric composition  
or cleaning method, should not be dried in it.  
WARNING: Dry only water-washed fabrics. DO NOT dry articles spotted or washed in dry  
cleaning solvents, a combustible detergent, or "all purpose" cleaner.  
EXPLOSION COULD RESULT.  
WARNING: DO NOT dry rags or articles coated or contaminated with gasoline, kerosene,  
oil, paint, wax. EXPLOSION COULD RESULT.  
WARNING: DO NOT dry mop heads. Contamination by wax or flammable solvents will  
create a fire hazard.  
3
 
WARNING: DO NOT use heat for drying articles that contain plastic, foam, sponge rubber,  
or similarly textured rubber materials. Drying in a heated basket (tumbler) may  
damage plastics or rubber and also may be a fire hazard.  
7. A program should be established for the inspection and cleaning of lint in the heating unit area, exhaust  
duct work, and inside the dryer. The frequency of inspection and cleaning can best be determined from  
experience at each location.  
WARNING: The collection of lint in the burner area and exhaust duct work can create a  
potential fire hazard.  
8. For personal safety, the dryer must be electrically grounded in accordance with local codes and/or the  
National Electric Code ANSI/NFPA NO. 70-LATEST EDITION, or in CANADA, the Canadian  
Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION.  
NOTE: Failure to do so will VOID THE WARRANTY.  
9. UNDER NO CIRCUMSTANCES should the dryer door switches, lint door switch, heat safety circuit  
ever be disabled.  
WARNING: PERSONAL INJURY or FIRE COULD RESULT.  
10. This dryer is not to be used in the presence of dry cleaning solvents or fumes.  
11. Remove articles from the dryer as soon as the drying cycle has been completed.  
WARNING: Articles left in the dryer after the drying and cooling cycles have been completed  
can create a fire hazard.  
12. DO NOT operate steam dryers with more than 125 PSI steam pressure. Excessive steam pressure can  
damage steam coil and/or harm personnel.  
13. Replace leaking flexible hoses or other steam fixtures immediately. DO NOT operate the dryer with  
leaking flexible hoses. PERSONAL INJURY MAY RESULT.  
14. READ and FOLLOW ALL CAUTION and DIRECTION LABELS ATTACHED TO THE DRYER.  
WARNING: YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY  
and THE GAS SUPPLY BEFORE ANY COVERS or GUARDS ARE  
REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR  
CLEANING, ADJUSTING, INSTALLATION, or TESTING OF ANY  
EQUIPMENT per OSHA (Occupational Safety and Health Administration)  
STANDARDS.  
4
 
SECTION II  
SPECIFICATIONS / COMPONENT IDENTIFICATION  
A. SPECIFICATIONS  
MAXIMUM CAPACITY (dry weight)  
BASKET (tumbler) DIAMETER  
BASKET (tumbler) DEPTH  
BASKET MOTOR  
120 lbs.  
44-1/2"  
42-1/2"  
3/4 HP  
3 HP  
54.4 kg  
113 cm  
107.9 cm  
.560 kw  
2.238 kw  
79.7 cm  
BLOWER MOTOR  
DOOR OPENING (Diameter)  
BASKET VOLUME  
31-3/8"  
38.2 cu. ft.  
1.08 cu.m.  
DRYERS PER 20" / 40" TRUCK  
DRYERS PER 45' / 48" TRUCK  
VOLTAGE AVAILABLE  
HEAT INPUT  
3/7  
9/9  
208-460v / 3Ø / 3, 4w 50 / 60Hz  
375,000 btu/hr 94,500 kcal/hr  
APPROX. WEIGHT (Uncrated)  
APPROX. WEIGHT (Crated)  
AIRFLOW  
1,500 lbs.  
1,725 lbs.  
2,150 cfm  
1"  
680.4 kg  
782.5 kg  
60.1 cmm*  
2.54 cm  
INLET SIZE  
VOLTAGE AVAILABLE  
208-600v / 3Ø / 3, 4w 50 / 60Hz  
OVEN SIZE  
kcal/hr  
kw  
72  
80  
btu/hr  
Airflow  
246,150  
273,500  
61,982  
68,869  
2,150 cfm 60.1 cmm  
2,500 cfm 70.1 cmm  
VOLTAGE AVAILABLE  
APPROX. WEIGHT (Uncrated)  
APPROX. WEIGHT (Crated)  
HEAT INPUT  
208-460v / 3Ø / 3, 4w 50 / 60Hz  
1,650 lbs.  
1,875 lbs.  
748.4 kg  
850.5 kg  
13 Bhp  
STEAM CONSUMPTION  
AIRFLOW  
450 lbs./hr  
2,750 cfm  
1-1/4"  
202.2 kg/hr  
77.9 cmm  
3.18 cm  
INLET SIZE  
80 PSI COMPRESSED AIR  
1/8" N.P.T.  
.318 cm  
Shaded areas are stated in metric equivalents.  
IMPORTANT: Steam dryers must be provided with a clean, dry, regulated 80 PSI(+/-10 PSI)  
air supply.  
NOTE: ADC RESERVES THE RIGHT TO MAKE CHANGES IN SPECIFICATIONS AT  
ANY TIME, WITHOUT NOTICE or OBLIGATION.  
5
 
Specifications  
ADG-120ES  
ADE-120ES  
ADS-120ES  
NOTE: OPERATING HEIGHT OF STEAM DRYER  
is 89 inches (226.1 cm).  
EXHAUST  
DIM.  
"A"  
DIM .  
"A"  
DUCT DIA.  
GAS AND  
ELECTRIC  
12"  
30.5 cm  
16"  
11-1/4"  
28.6  
9"  
22.9 cm  
9-1/2"  
24.1 cm  
9"  
STEAM  
40.6 cm  
22.9 cm  
NOTE: ADC RESERVES THE RIGHT TO MAKE CHANGES IN SPECIFICATIONS AT  
ANY TIME, WITHOUT NOTICE or OBLIGATION.  
6
 
B. COMPONENT IDENTIFICATION  
1. DRYER FRONT VIEW  
Illus. No.  
Description  
1
2
3
4
5
6
7
Microprocessor Control / Keyboard Panel Assembly (Controls)  
Control (Top Access) Door Assembly  
Main Door Assembly  
Lint Door Assembly  
Lint Drawer  
Wire Diagram (Located Behind Control Door)  
Top Console (Module) Assembly  
7
 
2. DRYER REAR VIEW  
Illus. No.  
Description  
1
2
3
4
5
6*  
7
Basket (Drive) Motor Assembly  
Blower Motor Mount Assembly  
Impellor (fan/blower) Assembly  
Idler Bearing Mount Assembly  
Tumbler Bearing Mount Assembly  
Electric Service Relay Box  
Heating Unit  
8
Data Label and Installation Label  
* Electric service connections are made in this box.  
8
 
SECTION III  
INSTALLATION PROCEDURES  
Installation should be performed by competent technicians in accordance with local and state codes. In the  
absence of these codes, the installation must conform to applicable AMERICAN NATIONAL  
STANDARDS:  
ANSI.Z223.1-LATEST EDITION (National Fuel Gas Code)  
and/or  
ANSI/NFPA NO. 70-LATEST EDITION (National Electric Code)  
or in CANADA, the installation must conform to applicable CANADIAN STANDARDS:  
CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION (for  
GENERAL INSTALLATION and GAS PLUMBING)  
and/or  
CANADIAN ELECTRICAL CODES PARTS 1 & 2 CSA C22.1-1990 or LATEST EDITION  
(for ELECTRICAL CONNECTIONS).  
A. LOCATION REQUIREMENTS  
Before installing the dryer, be sure the location conforms to local codes and ordinances. In the absence of such  
codes or ordinances the location must conform with the National Fuel Gas Code ANSI.Z223.1-  
LATEST EDITION, or in CANADA, the Canadian Installation Codes CAN/CGA-B149.1-M91 (Natural Gas)  
or CAN/CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION.  
1. The dryer must be installed on a sound level floor capable of supporting its weight. It is recommended  
that carpeting be removed from the floor area that the dryer is to rest on.  
2. The dryer must not be installed or stored in an area where it will be exposed to water and/or weather.  
3. Provisions for adequate air supply must be provided as noted in this manual (refer to Fresh Air Supply  
in Section D).  
4. Clearance provisions must be made from combustible construction as noted in this manual (refer to  
Dryer Enclosure Requirements in Section C).  
5. Provisions must be made for adequate clearances for servicing and for operation as noted in this manual  
(refer to Dryer Enclosure Requirements in Section C).  
6. Dryer must be exhausted to the outdoors (refer to Exhaust Requirements in Section E).  
7. Dryer must be located in an area where correct exhaust venting can be achieved as noted in the manual  
(refer to Exhaust Requirements in Section E).  
8. Dryer must be located in an area where correct exhaust venting can be achieved as noted in this manual  
(refer to Exhaust Requirements in Section E).  
IMPORTANT: Dryer should be located where a minimum amount of exhaust duct will be  
necessary.  
9
 
B. UNPACKING/SETTING UP  
Remove protective shipping material (i.e., plastic wrap, and/or optional shipping box) from dryer.  
IMPORTANT: Dryer must be transported and handled in an upright position at all times.  
The dryer can be moved to its final location while still attached to the skid or with the skid  
removed. To un-skid the dryer, locate and remove the four (4) lag bolts securing the base of the dryer to the  
wooden skid. Two (2) are located at the rear base (remove the back panel for access), and two (2) are located in  
the bottom of the lint chamber. To remove the two (2) lag bolts located in the lint chamber area, remove the lint  
drawer and the three (3) Phillips head screws securing lint door in place.  
10  
 
1. LEVELING DRYER  
a. To level dryer, place 4-inch square metal shims (refer to illustration above) or other suitable material  
under the base pads. It is suggested that the dryer be tilted slightly to the rear.  
2. If more headroom is needed when moving dryer into position, the top console (module) may be  
removed.  
a. To remove top console (module)  
1) Disconnect the ground wire (A) at the Rear Upper Left Hand Corner of Dryer.  
2) Remove the six (6) set of nuts and washers (B) holding the console (module) to base.  
3) Open the control door/control panel and disconnect the white 15-pin plug connector (C in the  
illustration below) located in the base of the control box.  
4) Disconnect white plug connector located outside backside of the control box (provides power to  
heat circuit).  
5) Lift the console (module) off of the dryer base.  
IMPORTANT: The dryer must be transported and handled in an upright position at all times.  
11  
 
C. DRYER ENCLOSURE REQUIREMENTS  
Even though a 12-inch clearance is acceptable, it is recommended that the rear of the dryer be positioned  
approximately two (2) feet (24-inches) from the nearest obstruction (i.e., wall) for ease of installation, mainte-  
nance, and service. Bulkheads and partitions should be made from noncombustible materials. The clearance  
between the bulkhead header and the dryer must be a minimum of 4-inches and must not extend more than 4-  
inches to the rear of the dryer front. The bulkhead facing must not be closed in all the way to the top of the dryer.  
A 2-inch clearance is required.  
NOTE: Bulkhead facing should not be installed until after dryer is in place. Ceiling area  
must be located a minimum of 12-inches above the top of the dryer.  
IMPORTANT: Even though a minimum of only 12-inches is required, 18-inches or more is  
suggested, for steam dryers and especially in cases where sprinkler heads are  
over the dryers.  
NOTE: When fire sprinkler systems are located above the dryers, a minimum of 18-inches  
above the dryer console (module) is suggested. Dryers may be positioned side wall  
to side wall however, 1 or 2-inches is suggested between dryers (or wall) for ease of  
installation and maintenance. Allowances must be made for the opening and closing  
of the control and lint doors.  
12  
 
D. FRESH AIR SUPPLY  
When the dryer is operating, it draws in room air, heats it, passes this air through the basket (tumbler), and  
exhausts it out of the building. Therefore, the room air must be continually replenished from the outdoors. If the  
make-up air is inadequate, drying time and drying efficiency will be adversely affected. Ignition problems and  
sail switch "fluttering" problems may result, as well as premature motor failure from overheating.  
Air supply (make-up air) must be given careful consideration to assure proper performance of each dryer. An  
unrestricted source of air is necessary for each dryer. An airflow of 2,150 cfm (cubic feet per minute) must be  
supplied to each gas dryer and electric dryer with a 72 Kw oven, 2,500 cfm to each electric dryer with a 80 Kw  
oven, and 2,750 cfm for each steam dryer. As a general rule, an unrestricted air entrance from the outdoors  
(atmosphere) of a minimum of three (3) square feet is required for each gas dryer and 72 Kw electric dryer and  
a minimum of five (5) square feet for each steam dryer and 80 Kw electric dryer.  
To compensate for the use of registers or louvers used over the openings, this make-up air area must be increased  
by approximately thirty-three (33) percent. Make-up air openings should not be located in an area directly near  
where exhaust vents exit the building.  
It is not necessary to have a separate make-up air opening for each dryer. Common make-up air openings are  
acceptable. However, they must be set up in such a manner that the make-up air is distributed equally to ALL the  
dryers.  
EXAMPLE: For a bank of six (6) gas dryers, two (2) openings measuring 3 feet by 3 feet  
(9 square feet) is acceptable.  
Allowances must be made for remote or constricting passageways or where dryers are located at excessive  
altitudes or predominantly low pressure areas.  
13  
 
IMPORTANT: Make-up air must be provided from a source free of dry cleaning solvent fumes.  
Make-up air that is contaminated by dry cleaning solvent fumes will result in  
irreparable damage to motors and other dryer components.  
NOTE: Component failure due to dry cleaning solvent fumes will VOID THE WARRANTY.  
E. EXHAUST REQUIREMENTS  
1. GENERAL EXHAUST DUCT WORK INFORMATION  
Exhaust duct work should be designed and installed by a qualified professional. Improperly sized duct  
work will create excessive back pressure which results in slow drying, increased use of energy,  
overheating of the dryer, and shutdown of the burner by the airflow (sail) switches, burner hi-limits, or  
basket (tumbler) hi-heat thermostats..  
CAUTION: DRYER MUST BE EXHAUSTED TO THE OUTDOORS.  
CAUTION: IMPROPERLY SIZED OR INSTALLED EXHAUST DUCT WORK CAN  
CREATE A POTENTIAL FIRE HAZARD.  
NOTE: When a dryer is exhausted separately, it is recommended that a back draft damper be  
installed.  
NOTE: When dryers are exhausted into a multiple (common) exhaust line, each dryer must be  
supplied with a back draft damper.  
The exhaust duct work should be laid out in such a way that the duct work travels as directly as  
possible to the outdoors with as few turns as possible. Single or independent dryer venting is  
recommended. When single dryer venting is used, the duct work from the dryer to the outside exhaust  
outlet should not exceed twenty (20) feet. In the case of multiple (common) dryer venting, the distance  
from the last dryer to the outside exhaust outlet should not exceed twenty (20) feet. The shape of the  
duct work is not critical so long as the minimum cross section area is provided. It is suggested that the  
use of 90º turns in ducting be avoided; use 30º and/or 45º angles instead. The radius of the elbows should  
preferably be 1-1/2 times the diameter of the duct. Excluding basket/dryer elbow connections or elbows  
used for outside protection from the weather, no more than two (2) elbows should be used in the exhaust  
duct run. If more than two (2) elbows are used, the cross section area of the duct work must be increased in  
proportion to number of elbows added.  
14  
 
ALL duct work should be smooth inside with no projections from sheet metal screws or other obstructions  
which will collect lint. When adding ducts, the ducts to be added should overlap the duct to which it is con-  
nected. ALL duct work joints must be taped to prevent moisture and lint from escaping into the building.  
Additionally, inspection doors should be installed at strategic points in the exhaust duct work for periodic  
inspection and clean-out of lint from the duct work.  
To protect the outside end of horizontal duct work from the weather, a 90° elbow bent downward  
should be installed where the exhaust exits the building. If the duct work travels vertically up through  
the roof, it should be protected from the weather by using a 180° turn to point the opening downward.  
In either case, allow at least twice the diameter of the duct between the duct opening and the nearest  
obstruction (i.e., roof or ground level).  
IMPORTANT: Exhaust back pressure measured by a manometer at the dryer exhaust duct area  
must not exceed 0.3 inches of water column.  
NOTE:Where the exhaust duct work passes through a wall, ceiling, or roof made of  
combustible materials, the opening must be 2-inches larger (all the way around) than  
the duct. The duct must be centered within this opening.  
a. Outside Duct Work Protection  
1) To protect the outside end of horizontal duck work from the weather, a 90° elbow bent downward  
should be installed where the exhaust exits the building. If the exhaust duct work travels vertically  
up through the roof, it should be protected from the weather by using a 180° turn to point the  
opening downward. In either case, allow at least twice the diameter of the duct between the duct  
opening and the nearest obstruction.  
IMPORTANT: DO NOT use screens or caps on the outside of opening of exhaust duct work.  
15  
 
2. SINGLE DRYER VENTING  
Where possible, it is suggested to provide a separate exhaust duct for each dryer. The exhaust duct  
should be laid out in such a way that the duct work travels as directly as possible to the outdoors with as  
few turns as possible. It is suggested that the use of 90° turns in ducting be avoided; use 30° and/or 45°  
angles instead. The shape of the exhaust duct work is not critical so long as the minimum cross section  
area is provided.  
IMPORTANT: Minimum duct size for a gas dryer or 72 Kw electric dryer is 14-inches for  
a round duct or 12.50" for a square duct. The minimum duct size for a  
steam dryer or 80 Kw electric dryer is 16-inches for a round duct or  
14.50" x 14.50" for a square duct. Duct size must not be reduced anywhere  
down stream of dryer.  
IMPORTANT: Exhaust back pressure measured by a manometer at each basket (tumbler)  
exhaust duct area should not exceed 0.3 inches of water column.  
It is suggested that the duct work from each dryer (minimum 14-inches for a gas dryer or 72 Kw electric  
dryer and 16-inches for a steam dryer or 80 Kw electric dryer) not exceed twenty (20) feet with no more  
than two (2) elbows (excluding dryer connections and outside exhaust outlets). If the duct work exceeds  
twenty (20) feet or has numerous elbows, the cross section area of the duct work must be increased in  
proportion to the length and number of elbows in it. In calculating duct size, the cross section area of a  
square or rectangular duct must be increased by twenty (20) percent for each additional twenty (20) feet.  
The diameter of a round exhaust duct should be increased ten (10) percent for each additional fifteen (15)  
feet. Each 90° elbow is equivalent to an additional thirty (30) feet, and each 45° elbow is equivalent to an  
additional fifteen (15) feet.  
16  
 
IMPORTANT: For extended duct work runs, the cross section area of the duct can only be  
increased to an extent. Maximum proportional duct work runs cannot exceed  
twenty (20) feet more than the original limitations of twenty (20) feet with  
two (2) elbows. When the duct work approaches the maximum limits as  
noted in this manual, a professional heating venting air conditioning (HVAC)  
firm should be consulted for proper venting information.  
ALL duct work should be smooth inside with no projections from sheet metal screws or other obstructions  
which will collect lint. When adding ducts, the duct to be added should overlap the duct to which it is to be  
connected. ALL duct work joints must be taped to prevent moisture and lint from escaping into the building.  
Inspection doors should be installed at strategic points in the exhaust duct work for periodic inspection and  
clean-out of lint from the duct work.  
NOTE: Where the exhaust duct passes through a wall, ceiling, or roof made of combustible  
materials, the opening must be 2-inches larger (all the way around) than the duct.  
The duct must be centered within this opening.  
a. Outside Duct Work Protection  
1) To protect the outside end of horizontal duct work from the weather, a 90° elbow bent downward  
should be installed where the exhaust exits the building. If the exhaust duct work travels vertically  
up through the roof, it should be protected from the weather by using a 180° turn to point the opening  
downward. In either case, allow at least twice the diameter of the duct between the duct opening and  
nearest obstruction.  
IMPORTANT: DO NOT use screens, louvers, or caps on the outside of opening of exhaust duct  
work.  
3. MULTIPLE DRYER (COMMON) VENTING  
If it is not feasible to provide separate exhaust ducts for each dryer, ducts from individual dryers may be  
channeled into a "common main duct". The individual ducts should enter the bottom or side of the main  
duct at an angle not more than 45° in the direction of air flow and should be spaced at least 48-3/8 inches  
apart. The main duct should be tapered, with the diameter increasing before each individual 14-inch  
(minimum for gas dryers or 72 Kw electric dryers) or 16-inch (minimum for steam dryers or 80 Kw electric  
dryers) duct is added.  
IMPORTANT: The AD-120ES is not provided with a back draft damper. When exhausted into  
a multiple (common) exhaust line, a back draft damper must be installed at  
each dryer duct.  
IMPORTANT: No more than four (4) dryers should be connected to one main common duct.  
17  
 
The main duct may be any shape or cross sectional area, so long as the minimum cross section area is provided.  
The illustrations on page 19 and page 20 show the minimum cross section area for multiple dryer round or  
square venting. These figures must be increased 10 square inches when rectangular main ducting is used, and  
the ratio of duct width to depth should not be greater than 3-1/2 to 1. These figures must be increased in  
proportion if the main duct run to the last dryer to where it exhausts to the outdoors is unusually long (over  
twenty [20] feet) or has numerous elbows (more than two [2]) in it. In calculating duct work size, the cross  
section area of a square or rectangular duct must be increased twenty (20) percent for each additional twenty  
(20) feet. The diameter of a round exhaust must be increased ten (10) percent for each additional twenty (20)  
feet. Each 90° elbow is equivalent to an additional fifteen (15) feet.  
IMPORTANT: For extended duct work runs, the cross section area of the duct work can only be  
increased to an extent. Maximum proportional duct work runs cannot exceed  
twenty (20) feet more than the original limitations of twenty (20) feet with two  
(2) elbows. When the duct work approaches the maximum limits as noted in  
this manual, a professional HVAC firm should be consulted for proper  
venting information.  
IMPORTANT: Exhaust back pressure measured by a manometer at each dryer exhaust duct area  
should not exceed 0.3 inches of water column.  
The duct should be smooth inside with no projections from sheet metal screws or other obstructions which will  
collect lint. When adding ducts, the duct to be added should overlap the duct to which it is to be connected.  
ALL duct work joints must be taped to prevent moisture and lint from escaping into the building. Inspection  
doors should be installed at strategic points in the exhaust duct work for periodic inspection and clean-out of  
lint from the duct work.  
NOTE: Where the exhaust passes through a wall, ceiling, or roof made of combustible materials,  
the opening must be 2-inches larger (all the way around) than the duct. The duct must  
be centered within this opening.  
a. Outside Duck Work Protection  
1) To protect the outside end of horizontal duct work from the weather, a 90° elbow bent downward  
should be installed where the exhaust exits the building. If the exhaust duct work travels vertically  
up through the roof, it should be protected from the weather by using a 180° turn to point the opening  
downward. In either case, allow at least twice the diameter of the duct between the duct opening and  
nearest obstruction.  
IMPORTANT: DO NOT use screens, louvers, or caps on the outside of opening of exhaust  
duct work.  
18  
 
ADG-120ES FOR GAS MODELS  
ADE-120ES FOR 80 KW ELECTRIC MODELS  
19  
 
MULTIPLE DRYER VENTING (ADS-120ES)  
WITH 16" DIAMETER (2,750 CFM) EXHAUST CONNECTIONS AT COMMON DUCT  
20  
 
F. ELECTRICAL INFORMATION  
1. Electrical Requirements  
It is your responsibility to have ALL electrical connections made by a properly licensed and competent  
electrician to assure that the electrical installation is adequate and conforms with local and state  
regulations or codes. In the absence of such codes, ALL electrical connections, material, and  
workmanship must conform to the applicable requirements of the National Electrical Code ANSI/NFPA  
NO.70-LATEST EDITION, or in CANADA, the Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990  
or LATEST EDITION.  
IMPORTANT: Failure to comply with these codes or ordinances, and/or the requirements  
stipulated in this manual can result in personal injury or component failure.  
NOTE: Component failure due to improper installation will VOID THE WARRANTY.  
Each dryer should be connected to an independently protected branch circuit. The dryer must be  
connected with copper wire ONLY. DO NOT use aluminum wire which could cause a fire hazard. The  
copper conductor wire/cable must be of proper ampacity and insulation in accordance with electric codes  
for making ALL service connections.  
NOTE: The use of aluminum wire will VOID THE WARRANTY.  
NOTE: Wiring diagrams are affixed to the inside at the top front control door and to the rear  
upper back guard / panel.  
21  
 
2. Electrical Service Specifications  
ADG-1 2 0 ES Reversin g, 3 ø (GAS)  
ADS-1 2 0 ES Reversin g, 3 ø (STE AM )  
ELECTRICAL SERVICE SPECIFICATIONS (PER DRYER)  
IMPORTANT: 208 VAC and 240 VAC ARE NOT THE SAME. When ordering, specify exact voltage.  
NOTES: A. Fuse ratings are dual-element, time-delay, current limiting, class RK1 or RK5 ONLY.  
B. Circuit breakers are thermal magnetic (industrial) type ONLY . For others, calculate/verify correct breaker size  
according to appliance amp draw rating and type of breaker used.  
C. Circuit breakers for 3Ø dryers must be 3-pole type.  
FUSING  
Dual Element  
Time Delay  
APPROX.  
AMP DRAW  
CIRCUIT  
BREAKER  
SERVICE  
VOLTAGE  
WIRE  
SERVICE  
MINIMUM  
WIRE SIZE*  
PHASE  
60 Hz 50 Hz  
60 Hz 50 Hz 60 Hz 50 Hz  
120  
240  
380  
416  
460  
480  
575  
3ø  
3ø  
3ø  
3ø  
3ø  
3ø  
3ø  
3/4  
3
14.6  
13.3  
8
---  
14  
7.6  
7.4  
---  
7
14  
14  
14  
14  
14  
14  
14  
20  
20  
12  
---  
---  
10  
10  
---  
20  
10  
10  
---  
---  
10  
25  
25  
15  
---  
15  
15  
15  
---  
25  
15  
15  
---  
---  
15  
3/4  
3/4  
3/4  
3/4  
3
---  
7.1  
7.1  
6.3  
---  
* AWG Stranded Type Wire ... for individual lengths less than 100 feet.  
(Motor lead type wire is recommended)  
IMPORTANT: The dryer must be connected to the electric supply shown on the data label that is  
affixed to the back of the dryer, at the upper right hand corner. In the case of  
208 VAC or 240 VAC, the supply voltage must match the electric service  
specifications of the data label exactly.  
WARNING: 208 VAC and 240 VoltsARE NOT THE SAME. Any damage done to dryer  
components due to improper voltage connections will automatically VOID THE  
WARRANTY.  
NOTE: ADC reserves the right to make changes in specifications at any time, without notice or  
obligation.  
22  
 
ADE-1 2 0 ES (7 2 Kw Elect ric) Reversin g, 3 ø  
ELECTRICAL SERVICE SPECIFICATIONS (PER DRYER)  
IMPORTANT: 208 VAC and 240 VAC ARE NOT THE SAME. When ordering, specify exact voltage.  
NOTES: A. Fuse ratings are dual-element, time-delay, current limiting, class RK1 or RK5 ONLY.  
B. Circuit breakers are thermal magnetic (industrial) type ONLY. For others, calculate/verify correct breaker size according to  
appliance amp draw rating and type of breaker used.  
C. Circuit breakers for 3Ø dryers must be 3-pole type.  
APPROX.  
AMP DRAW  
60 Hz 50 Hz  
FUSING  
Dual Element  
Time Delay  
OVEN SIZE SERVICE  
WIRE  
SERVICE  
MINIMUM  
WIRE SIZE*  
CIRCUIT  
BREAKER  
PHASE  
((Kw)  
VOLTAGE  
72  
72  
72  
72  
72  
72  
72  
72  
72  
208  
240  
3ø  
3ø  
3ø  
3ø  
3ø  
3ø  
3ø  
3ø  
3ø  
3
3
214  
186  
117  
117  
---  
---  
187  
117  
117  
107  
107  
---  
4/0  
3/0  
1
300  
250  
150  
150  
150  
150  
150  
150  
100  
300  
250  
150  
150  
150  
150  
125  
125  
110  
380  
3
380  
4
1
416  
3
2
416  
4
---  
2
480  
3
98  
3
480  
98  
---  
3
4
575/600  
3/4  
79.4  
---  
4
* AWG Stranded Type Wire ... for individual lengths less than 100 feet.  
(Motor lead type wire is recommended)  
IMPORTANT: The dryer must be connected to the electric supply shown on the data label that is  
affixed to the back of the dryer, at the upper right hand corner. In the case of  
208 VAC or 240 VAC, the supply voltage must match the electric service  
specifications of the data label exactly.  
WARNING: 208 VAC and 240 VoltsARE NOT THE SAME. Any damage done to dryer  
components due to improper voltage connections will automatically VOID THE  
WARRANTY.  
NOTE: ADC reserves the right to make changes in specifications at any time, without notice or  
obligation.  
23  
 
ADE-1 2 0 ES (8 0 Kw Elect ric) Reversin g, 3 ø  
ELECTRICAL SERVICE SPECIFICATIONS (PER DRYER)  
IMPORTANT: 208 VAC and 240 VAC ARE NOT THE SAME. When ordering, specify exact voltage.  
NOTES: A. Fuse ratings are dual-element, time-delay, current limiting, class RK1 or RK5 ONLY.  
B. Circuit breakers are thermal magnetic (industrial) type ONLY. For others, calculate/verify correct breaker size according to  
appliance amp draw rating and type of breaker used.  
C. Circuit breakers for 3Ø dryers must be 3-pole type.  
APPROX.  
AMP DRAW  
60 Hz 50 Hz  
FUSING  
Dual Element  
Time Delay  
300  
OVEN SIZE SERVICE  
WIRE  
SERVICE  
MINIMUM  
WIRE SIZE*  
CIRCUIT  
BREAKER  
PHASE  
((Kw)  
VOLTAGE  
80  
80  
80  
80  
80  
80  
80  
80  
80  
80  
208  
240  
380  
380  
416  
416  
480  
480  
575  
600  
3ø  
3ø  
3ø  
3ø  
3ø  
3ø  
3ø  
3ø  
3ø  
3ø  
235  
206  
---  
---  
208  
130  
130  
119  
119  
---  
250 MCM  
300  
300  
175  
175  
150  
150  
150  
150  
125  
125  
3
3
4/0  
1
300  
175  
175  
150  
150  
150  
150  
125  
125  
3
4
---  
1
3
---  
1
4
---  
1
188  
108  
88  
2
3
---  
2
4
---  
3
3/4  
3/4  
85  
---  
3
* AWG Stranded Type Wire ... for individual lengths less than 100 feet.  
(Motor lead type wire is recommended)  
IMPORTANT: The dryer must be connected to the electric supply shown on the data label that is  
affixed to the back of the dryer, at the upper right hand corner. In the case of  
208 VAC or 240 VAC, the supply voltage must match the electric service  
specifications of the data label exactly.  
WARNING: 208 VAC and 240 VoltsARE NOT THE SAME. Any damage done to dryer  
components due to improper voltage connections will automatically VOID THE  
WARRANTY.  
NOTE: ADC reserves the right to make changes in specifications at any time, without notice or  
obligation.  
24  
 
3. ElectricalConnections  
NOTE: A wiring diagram is included with each dryer and is affixed to the rear upper right guard/  
panel of the dryer.  
The only electrical input connections to the dryer are the 3-phase (3Ø) power leads (L1, L2, and L3),  
GROUND, and in the case of 4 wire service, the neutral. Providing local codes permit, power connections  
to the dryer can be made by the use of a flexible underwriters laboratory listed cord/pigtail (wire size must  
conform to rating of the dryer), or the dryer can be hard wired directly to the service breaker. In ALL  
cases, a strain relief must be used where the wire(s) enter the dryer electrical service (relay) box.  
a. Gas Models and Steam Models Dryers  
These electrical connections are made at the terminal block located in the electric service/relay box at the  
rear, upper left hand corner of the dryer. To gain access into this service box, the service cover (upper  
back guard) must be removed.  
b. Electric Model Dryers  
For electric model dryers made to operate at 208 VAC, 230 VAC, or 240 VAC, the electrical input  
connection is made into the terminal block located at the upper rear of the dryer (refer to the illustration  
on page 27). For electric model dryers made to operate at 380 VAC, 416 VAC, 440 VAC, or 480 VAC,  
the electrical input connection is made to the oven relay located at the upper rear of the dryer (refer to the  
illustration on page 27). Input connection wiring must be sized properly to handle the dryer's current  
draw. This information is printed on the dryer's data label which is affixed to the rear, upper right hand  
corner of the dryer.  
NOTE: A CIRCUIT SERVING EACH DRYER MUST BE PROVIDED.  
25  
 
4. Grounding  
Grounding (earth) connections must be provided and installed in accordance with state and local codes. In  
the absence of the codes, grounding must conform to applicable requirements of the National Electric  
Code ANSI/NFPA NO.70LATEST EDITION, or in CANADA, the Canadian Electrical Codes Parts 1 &  
2 CSA C22.1-1990 or LATEST EDITION. The ground connection may be to a proven earth ground at  
the location service panel.  
NOTE: A grounding connection (terminal lug) is provided in the dryer's electrical service/relay  
box at the rear.  
For added personal safety, when possible, it is suggested that a separate ground wire (sized per local codes)  
be connected from the ground connection of the dryer to a grounded cold water pipe. DO NOT ground to  
a gas or hot water pipe. The grounded cold water pipe must have metal to metal connections all the way to  
electrical ground. If there are any non-metallic interruptions, such as a meter, pump, plastic, rubber, or  
other insulating connectors, theymust be jumped out with no. 4 copper wire and securely clamped to bare  
metal at both ends.  
IMPORTANT: For personal safety and proper operation, the dryer must be grounded. For  
proper operation of the microprocessor (computer), an earth (zero) ground is  
required.  
NOTE: Grounding via metallic electrical conduit (pipe) is not recommended.  
26  
 
G. GAS INFORMATION  
It is your responsibility to have ALL plumbing connections made by a qualified professional to assure that the gas  
plumbing installation is adequate and conforms with local and state regulations or codes. In the absence of such  
codes, ALL plumbing connections, materials, and workmanship must conform to the applicable  
requirements of the National Fuel Gas Code ANSI Z223.1-LATEST EDITION, or in CANADA, the Canadian  
Installation Codes CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91(L.P. Gas) or LATEST  
EDITION.  
IMPORTANT: Failure to comply with these codes or ordinances, and/or the requirements  
stipulated in this manual, can result in PERSONAL INJURY and IMPROPER  
OPERATION of the dryer.  
The dryer and its individual shut-off valves must be disconnected from the gas supply piping system during any  
pressure testing of that system at test pressures in excess of 1/2 psig (3.5 kPa). The dryermust be isolated from  
the gas supply piping system by closing its individual manual shut-off valve during any pressure test of the gas  
supply system at test pressures equal to or less than 1/2 psig (3.5 kPa).  
IMPORTANT: Failure to isolate or disconnect the dryer from supply as noted can cause irreparable  
damage to the gas valve VOIDING THE WARRANTY.  
WARNING: FIRE or EXPLOSION COULD RESULT.  
1. Gas Supply  
The gas dryer installation must meet the American National Standard...National Fuel Gas Code ANSI Z223.1-  
LATEST EDITION, as well as local codes and ordinances and must be done by a qualified professional.  
NOTE: Undersized gas piping will result in ignition problems, slow drying, increased use of  
energy, and can create a safety hazard.  
The dryer must be connected to the type of heat/gas indicated on the dryer label affixed behind the right control  
box door. If this information does not agree with the type of gas available, DO NOT operate the dryer.  
Contact the distributor who sold the dryer or the ADC factory.  
IMPORTANT: Any burner changes or conversions must be made by a qualified professional.  
The input ratings shown on the dryer data label are for elevations up to 2,000 feet, unless elevation requirements  
of over 2,000 feet were specified at the time the dryer order was placed with the factory. The adjustment or  
conversion of dryers in the field for elevations over 2,000 feet are made by changing each burner orifice. If this  
conversion is necessary, contact the distributor who sold the dryer or contact the ADC factory.  
27  
 
2. Technical Gas Data  
a. Gas Specifications  
Type of Gas  
Natural  
Liquid Propane  
10.5 inches W.C.  
10.5 inches W.C.  
Manifold Pressure*  
Inline Pressure  
3.5 inches W.C.  
6.0 to 12.0 inches W.C.  
* Measured at gas valve pressure tap when the gas valve is on.  
b. Gas Connections:  
Inlet connection ----- 1-inch N.P.T.  
Inlet supply size ----- 1-inch N.P.T. (minimum)  
Btu/hr input (per dryer) ----- 375,000  
1) Natural Gas  
Regulation is controlled by the dryer's gas valve's internal regulator. Incoming supply pressure must  
be consistent between a minimum of 6.0 inches and a maximum of 12.0 inches water column  
pressure.  
2) Liquid Propane (L.P.) Gas  
Dryers made for use with L.P. gas have the gas valve's internal pressure regulator blocked open so  
that the gas pressure must be regulated upstream of the dryer. The pressure measured at each gas  
valve pressure tap must be a consistent 11.0 inches water column. There is no regulator or regulation  
provided in an L.P. dryer. The water column pressure must be regulated at the source (L.P. tank) or  
an external regulator must be added to each dryer.  
Type of Gas  
L.P.  
Conversion  
Natural  
Liquid Propane  
BTU  
Per Hour  
Rating  
Model  
Number  
Kit  
Part  
Part  
Part Number  
Qty. D.M.S.*  
Qty. D.M.S.*  
Number  
Number  
140819  
ADG-120ES  
375,000  
2
#4  
140832  
3
#30  
880886  
* D.M.S. (Drill Material Size) equivalents are as follows:  
Natural Gas ...................... #4 = .2090"  
Liquid Propane Gas ......... #30 = .1285"  
28  
 
3. Piping/Connections  
ALL components/materials must conform to National Fuel Gas Code Specifications, or in CANADA, the  
Canadian Installation Codes (for General Installation and Gas Plumbing). It is important that gas pressure  
regulators meet applicable pressure requirements and that gas meters be rated for the total amount of all the  
appliance Btu's being supplied.  
The dryer is provided with a 1-inch N.P.T. inlet pipe connection extending out the back area of the burner box.  
The minimum pipe size connection (supply line) to the dryer is 1-inch N.P.T. For ease of servicing, the gas  
supply line of each dryer must have its own shut-off valve.  
The size of the main gas supply line (header) will vary depending on the distance this line travels from the gas  
meter or, in the case of L.P. gas, the supply tank, other gas-operated appliances on the same supply line, etc.  
Specific information regarding supply line size should be determined by the gas supplier.  
NOTE: Undersized gas supply piping can create a low or inconsistent pressure which will result  
in erratic operation of the burner ignition system.  
Consistent gas pressure is essential atALL gas connections. It is recommended that a 1-inch pipe gas loop be  
installed in the supply line serving a bank of dryers. An in-line pressure regulator must be installed in the gas  
supply line (header) if the (natural) gas pressure exceeds 12.0 inches of water column pressure.  
IMPORTANT: A water column pressure of 3.5 to 4.0 inches for natural gas and 11.0 inches for  
L.P. dryers is required at the gas valve pressure tap of each dryer for proper and  
safe operation.  
A 1/8-inch N.P.T. plugged tap, accessible for a test gauge connection, must be installed in the main gas supply  
line immediately upstream of each dryer.  
IMPORTANT: Pipe joint compounds that resist the action of natural and L.P. gases must be  
used.  
IMPORTANT: Test ALL connections for leaks by brushing on a soapy water solution  
(liquid detergent works well).  
WARNING: NEVER TEST FOR GAS LEAKS WITH A FLAME!!!  
ALL components/materials must conformto National Fuel Gas Code Specifications ANSI Z223.1-LATEST  
EDITION, or in CANADA, the Canadian Installation Codes CAN/CGA-B149.1-M91 (Natural Gas) or CAN/  
CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION.  
It is important that gas pressure regulators meet applicable pressure requirements, and that gas meters be rated  
for the total amount of appliance Btu's being supplied.  
29  
 
IMPORTANT: The dryer and its individual shut-off valve must be disconnected from the gas  
supply piping system during any pressure testing of that system at test pressures  
in excess of 1/2 psig (3.5kPa).  
NOTE: The dryer must be isolated from the gas supply piping system by closing its individual  
manual shut-off valve during any pressure testing of the gas supply piping system at test  
pressures equal to or less than 1/2 psig (3.5kPa).  
30  
 
H. STEAM INFORMATION  
It is your responsibility to have ALL steam plumbing connections made by a qualified professional to assure that  
the installation is adequate and conforms with local and state regulations or codes.  
IMPORTANT: Failure to comply with the requirements stipulated in this manual can result in  
component failure which will VOID THE WARRANTY.  
NOTE: The ADS-120ES is manufactured with a pneumatic (piston) damper system which  
requires an external supply of clean, dry, regulated air (80 psi +/- 10 psi). Refer to  
Steam Damper Air System Connections, Section H, item 3.  
1. STEAM COIL PH LEVEL  
The normal PH level for copper type steam coils must be maintained between a value of 8.5 to 9.5. For steel  
type steam coils the PH level must be maintained between a value of 9.5 to 10.5. These limits are set to limit  
the acid attack of the steam coils.  
IMPORTANT: Coil failure due to improper PH level will VOID THE WARRANTY.  
2. STEAM REQUIREMENTS , HIGH PRESSURE  
a. Inlet ---- 1-1/4-inch supply line connection --- qty. one (1) at top manifold.  
b. Return -- 1-1/4-inch return line connection --- qty. one (1) at bottom manifold.  
Operating Steam Pressure  
Maximum  
125 psig  
100 psig  
13 Bhp  
Minimum  
Heat Input (Normal Load)  
Consumption (Approximate)  
450 lbs/hr  
3. INSTALLATION INSTRUCTIONS  
To insure that an adequate supply of steam is provided, be sure that the steam supply and steam return lines  
are sized and laid out as stipulated in this manual. Inadequate steam supply and steam return lines are sized  
and laid out as stipulated in this manual. Inadequate steam supply and steam return lines or improper steam  
plumbing will result in poor performance and can cause component failure. Clean, dry, regulated steam  
must be provided to the dryer.  
IMPORTANT: Steam coil failure due to water hammer by wet steam will VOID THE  
WARRANTY.  
31  
 
a. The pressure of the condensate in the steam supply will cause water hammer and subsequent heat  
exchanger (steam coil) failure. The steam supply connection into the main supply linemust be made  
b. The steam supply piping to the dryermust include a 12-inch rise along with a drip trap and check valve.  
This will prevent any condensate from entering the steam coil.  
c. Flexible hoses or couplings must be used. The dryer vibrates slightly when it runs and this will cause the  
steam coil connections to crack if they are hard piped to the supply and return mains.  
d. Shut-off valves for each dryer should be installed in the supply, return, and drip trap return lines. This  
will allow the dryer to be isolated from the supply and return mains if the dryer needs maintenance work.  
e. Install an inverted bucket steam trap and check valve for each unit at least 12-inches below steam coil as  
close to the coil as possible.  
1) A trap with a capacity of 1,200 pounds of condensate per hour at 125 psi is needed for each unit.  
f. A 3/4" vacuum breaker should be installed for each unit in the piping. This will prevent the condensing  
steam from causing a vacuum inside the coil and possibly damaging the coil.  
g. The supply and return lines should be insulated. This will save energy and provide for safety of the  
operator and maintenance personnel.  
h. Water pockets in the supply line, caused by low points, will provide wet steam to the coil possibly causin  
coil damage. ALL horizontal runs of steam supply piping should be pitched 1/4-inch for every one (1)  
foot back towards the steam supply header causing any condensate in the line to drain to the header.  
Install a bypass trap in any low point to eliminate wet steam.  
STEAM DAMPER SYSTEM  
32  
 
3. STEAM DAMPER AIR SYSTEM CONNECTIONS  
The ADS-120ES is manufactured with a pneumatic (piston) damper system which requires an external  
supply of compressed air. The air connection is made to the steam damper solenoid valve which is located  
at the rear inner top area of the dryer just above the electric service relay box (refer to the bottom  
illustration on page 34).  
a. Air Requirements  
Compresses Air Supply  
Air Pressure  
Normal  
80 psi  
70 psi  
90 psi  
Minimum Supply  
Maximum Supply  
b. Air Connection  
Air connection to system --- 1/8-inch N.P.T.  
c. No air regulation or filtration is provided with the dryer. External regulation/filtration of 80 psimustbe  
provided. It is suggested that a regulator/filter gauge arrangement be added to the compressed air line  
just before the dryer connection. This is necessary to insure that correct and clean air pressure is achieved.  
4. STEAM DAMPER SYSTEM OPERATION  
The ADS-120ES steam damper, as shown in the top illustration on page 34, allows the coil to stay  
constantly charged eliminating repeated expansion and contraction. When the damper is opened, the air  
immediately passes through the already hot coil, providing instant heat to start the drying process. When  
the damper is closed, ambient air is drawn directly into the basket (tumbler), allowing a rapid cool down.  
Diagram 1 -- shows the damper in the heating (open) mode, allowing heat into the basket (tumbler).  
Diagram 2 -- shows the damper in the cool down (closed) mode, pulling ambient air directly into the basket  
(tumbler) without passing through the coils.  
NOTE: With the dryer off or with no air supply, the damper is in the cool down mode as shown  
in Diagram 2.  
33  
 
5. STEAM DAMPER AIR PISTON (FLOW CONTROL) OPERATION ADJUSTMENT  
Although the damper operation was tested and adjusted prior to shipping at 80 psi, steam damper operation  
must be checked before the dryer is put into operation. Refer topage 37 for instructions to check system  
damper operation. If damper air adjustment is necessary, locate flow control valve and make necessary  
adjustments as noted below.  
34  
 
I. PREPARATION FOR OPERATION  
The following items should be checked before attempting to operate the dryer:  
1. Read ALL "CAUTION," "WARNING," and "DIRECTION" labels attached to the dryer.  
2. Check incoming supply voltage to be sure that it is the same as indicated on the dryer data label located in  
the front top console area as shown on page 8. In case of 208 VAC or 230/240 VAC, the supply voltage  
must match the electric service exactly.  
3. GAS MODELS - check to assure that the dryer is connected to the type of heat/gas indicated on the  
dryer data label.  
4. GAS MODELS- the sail switch damper assembly was installed and adjusted at the factory prior to  
shipping. However, each sail switch adjustment must be checked to assure that this  
important safety control is functioning.  
5. GAS MODELS - be sure that ALL gas shut-off valves are in the open position.  
6. Be sure ALL back panels (guards) and electric box covers have been replaced.  
7. Check ALL service doors to assure that they are closed and secured in place.  
8. Be sure lint drawer is securely in place.  
NOTE: LINT DRAWER MUST BE ALL THE WAY IN PLACE TO ACTIVATE SAFETY  
SWITCH OTHERWISE THE DRYER WILL NOT START.  
9. Rotate the basket (tumbler) by hand to be sure it moves freely.  
10. Check bolts, nuts, screws, terminals, and fittings for security.  
11. STEAM MODELS - check to insure air supply (80 psi) is on to the dryer.  
12. STEAM MODELS - check to insure ALL steam shut-off valves are open.  
13. STEAM MODELS - check steam damper operation.  
14. Check tumbler bearing set screws to insure they are ALL tight.  
35  
 
J. PREOPERATIONAL TESTS  
ALL dryers are thoroughly tested and inspected before leaving the factory. However, a preoperational test  
shouldbe performed before the dryer is publicly used. It is possible that adjustments have changed in transit or  
due to marginal location (installation) conditions.  
1. Turn on electric power to the dryer.  
2. Make sure the main door is closed and the lint drawer is securely in place.  
3. Refer to the Operating Instructions for starting your particular dryer.  
4. Check to insure that the basket (tumbler) starts in the clockwise (CW) direction. Additionally, check the  
direction of the blower motor impellor (fan) to insure that impellor (fan) rotates in the clockwise (CW)  
direction as viewed from the front. If it is, the phasing is correct. If the phasing is incorrect, reverse two (2)  
of the leads at L1, L2, or L3 of the power supply connections made to the dryer.  
IMPORTANT: Dryer blower motor impellor/fan as viewed from the front must turn in the  
clockwise (CW) direction, otherwise dryer efficiency will drastically be reduced  
and premature component failure can result.  
5. HEAT CIRCUIT OPERATIONAL TEST  
a. Gas Models  
1) When the dryer is first started (during initial start-up), the burner has a tendency not to ignite on the  
first attempt. This is because the gas supply piping is filled with air, so it may take a few minutes for  
this air to be purged from the lines.  
2) The dryer is equipped with a direct spark ignition (DSI) system which has internal diagnostics. If  
ignition is not established after the first attempt, the heat circuit DSI module will lock out until it is  
manually reset. To reset the DSI system, open and close main door and restart dryer (press the  
"ENTER/START" key).  
NOTE: During the purging period, check to be sure that ALL gas shut-off valves are open.  
3) Once ignition is established, a gas pressure testshouldbe taken at the gas valve pressure tap of each  
dryer to assure that the water column pressure is correct and consistent.  
NOTE: Water column pressure requirements (measured at the gas valve pressure tap)...  
NATURAL GAS --- 3.5-4.0 INCHES W.C.  
L.P. GAS ------------ 10.5 - 11.0 INCHES W.C.  
36  
 
IMPORTANT: There is no regulator provided in an L.P. dryer. The water column pressure  
must be regulated at the source (L.P. tank) or an external regulator must be  
added to each dryer.  
b. Electric Models  
1) Check the oven contactor(s) to insure that the electric oven is cycling properly.  
c. Steam Models  
1) Check to insure that steam damper is functioning properly.  
a) The steam damper should not "slam" (open or closed) when it reaches the end of (piston) travel.  
Additionally, the steam damper should not bind and/or stop during travel. If either of these  
conditions occur, the flow controlmust be adjusted. Refer to the bottom illustration onpage 35  
for air adjustment instructions.  
6. Make a complete operational check of ALL safety-related circuits (i.e., lint drawer switch, and sail switch  
on gas models).  
NOTE: To check for proper sail switch operation, open the main door and while holding main  
door switch plunger in, start dryer. Dryer should start but heat circuit should not be  
activated (on). If heat (burner) does activate, shut dryer off and make necessary  
adjustments.  
7. A reversing basket (tumbler) dryer should never be operated with less than a 60 lb. load (dry weight). The  
size of the load will affect the coast-down and dwell (stop) times. The basket (tumbler) must come to a  
complete stop before starting in opposite direction.  
a. Microprocessor (computer) Dryer Models  
1) Spin and stop timesare notadjustable in the Automatic Mode and have been preprogrammed into  
the microprocessor controller (computer) for 120-seconds spin time and a 5-second dwell (stop)  
time.  
2) Spin and stop times are adjustable in the Manual (timed) Mode.  
b. Dual Timer Dryer Models  
1) Spin and stop times are adjustable at the reversing timer (refer topage 58).  
IMPORTANT: The dryer basket (tumbler) is treated with a protective coating ADC suggests  
tumbling old clothes or material in the basket (tumbler), using a mild detergent  
to remove the protective coating.  
37  
 
8. Each dryer should be operated through one complete cycle to assure that no further adjustments are  
necessary and that ALL components are functioning properly.  
9. Make a complete operational check of ALL operating controls.  
a. Microprocessor controller (computer) programs/selections...  
1) Each microprocessor controller (computer) has been preprogrammed by the factory with the most  
commonly used parameter (program) selections. If computer program changes are required, refer to  
the computer programming manual which was shipped with the dryer.  
b. Dual timer dryers check...  
1) Heating Timer  
2) Cool Down Timer  
3) Temperature Selection Switch  
38  
 
K. OPERATING INSTRUCTIONS  
NOTE: Before attempting to start the dryer make sure that the main door is closed and the  
lint drawer is securely in place.  
1. To start the dryer.  
a. Microprocessor (Computer) Dryers  
1) Display will read "FILL" (meaning no cycle in progress).  
2) Press the letter on the keyboard (touchpad) corresponding to the cycle desired (i.e., Ke "E")...  
a) The dryer will then start (rotate).  
3) L.E.D. display will now show the Cycle In progress and Cycle status (i.e., "dr30") meaning that the  
dryer is in the drying cycle (dry mode for 30 minutes) and count down in minutes.  
NOTE: Pressing touch pad key "A," "B," "C," "D," and "F" will also start the dryer. The six (6)  
preprogrammed drying cycles ("A" through "F") have been stored in the microprocessor  
(computer's) memory. Refer to the Computer Programming Manual supplied with dryer  
for more specific operating information.  
NOTE: The dryer can be stopped at any time by opening main door or by pressing the "CLEAR/  
STOP" key. To restart the dryer, press the "ENTER/START" key or preprogrammed  
cycle key (i.e., "E").  
NOTE: Selection (setting) changes can be made at any time during the drying cycle by pressing  
the "CLEAR/STOP" key twice. The L.E.D. display will return to "FILL" at which time  
a new cycle selection can be made.  
b. Dual Timer Dryers  
1) Select Drying Time and Cool Down Time desired...  
a) Turn Heat Timer clockwise (CW) to desired time (i.e., 1 minute to 60 minutes).  
b) Turn Cool Down Timer clockwise (CW) to desired time (i.e., 0 minutes to 30 minutes).  
2) Select Drying Temperature ("HI TEMP," "LO TEMP," or "PERM PRESS").  
3) Push "Push to Start" switch...  
a) Dryer will now start.  
4) To stop dryer, open the main door.  
39  
 
L. SHUT DOWN INSTRUCTIONS  
If the dryer is to be shut down (taken out of service) for a period of time, the following must be performed:  
1. Discontinue power to the dryer either at the external disconnect switch or the circuit breaker.  
2. GAS MODELS ... discontinue the gas supply.  
1) SHUT OFF externalgas supply shut-off valve.  
2) SHUT OFF internalgas supply shut-off valve located in the gas valve burner area.  
3. STEAM MODELS ... discontinue the steam supply.  
1) SHUT OFF steam valves in the supply lines and the return lines.  
40  
 
SECTION IV  
SERVICE/PARTS INFORMATION  
A. SERVICE  
1. Service must be performed by a qualified trained technician, service agency, or gas supplier. If service is  
required, contact the distributor from whom the ADC equipment was purchased. If the distributor cannot  
be contacted or is unknown, contact the ADC Service Department for a distributor in your area.  
NOTE: When contacting the ADC Service Department, be sure to give them the correct model  
number and serial number so that your inquiry is handled in an expeditious manner.  
B. PARTS  
1. Replacement parts should be purchased from the distributor from whom the ADC equipment was  
purchased. If the distributor cannot be contacted or is unknown, contact the ADC Parts Department for a  
distributor in your area. Parts may also be purchased directly from the factory by calling the ADC Parts  
Department at (508) 678-9010 or you may FAX in your order at (508) 678-9447.  
NOTE: When ordering replacement parts from the ADC dealer or the ADC factory be sure to  
give them the correct model number and serial number so that your parts order can be  
processed in an expeditious manner.  
41  
 
SECTION V  
WARRANTY INFORMATION  
A. RETURNING WARRANTY CARD(S)  
1. Before any dryer leaves theADC factory test area, a warranty card (ADC Part No. 112254) is placed on  
the back side of the main door glass. These warranty cards are intended to serve the customer  
where we record the individual installation date and warranty information to better serve you should  
you file a warranty claim.  
a. If a warranty card (ADC Part No. 112254) did not come with your dryer, contact the ADC  
Warranty Department or ADC Service Department at (508) 678-9000.  
IMPORTANT: A separate warranty card must be completed and returned for each individual  
dryer.  
NOTE: Be sure to include the installation date when returning the warranty card(s).  
B. WARRANTY  
For a copy of the ADC commercial warranty covering your particular dryer(s), contact the ADC distributor  
from whom you purchased the equipment and request dryer warranty form ADC Part No. 450199. If the  
distributor cannot be contacted or is unknown, warranty information can be obtained from the factory by  
contacting the ADC Warranty Department at (508) 678-9000.  
NOTE: Whenever contacting the ADC factory for warranty or warranty information, be sure to  
have the dryer's model number and serial number available so that your inquiry can be  
handled in an expeditious manner.  
C. RETURNING WARRANTY PARTS  
ALL dryer or parts warranty claims or inquiries should be addressed to the ADC Warranty Parts Department.  
To expedite processing, the following procedures must be followed:  
1. No parts are to be returned to ADC without prior written authorization ("Return Material Authorization")  
from the factory.  
NOTE: An R.M.A. ("Return Material Authorization") is valid for only sixty (60) days from  
date of issue.  
a. The R.M.A. issued by the factory, as well as any other correspondence pertaining to the returned part(s),  
must be included inside the package with the failed merchandise.  
42  
 
2. Each part must be tagged with the following information:  
a. Model numberand serial numberof the dryer from which part was removed.  
b. Nature of failure (be specific).  
c. Date of dryer installation.  
d. Date of part failure.  
e. Specify whether the part(s) being returned is for a replacement, a credit, or a refund.  
NOTE: If a part is marked for a credit or a refund, the invoice number covering the purchase  
of the replacement part must be provided.  
NOTE: Warranty tags (ADC Part No. 450064) are available at "no charge" from ADC upon  
request.  
3. The company returning the part(s) must clearly note the complete company name and address on the  
outside of the package.  
4. ALL returns must be properly packaged to insure that they are not damaged in transit.Damage claims are  
the responsibility of the shipper.  
IMPORTANT: No replacements, credits or refunds will be issued for merchandise damaged in  
transit.  
5. ALL returns should be shipped to the ADC factory in such a manner that they are insured and a proof  
of delivery can be obtained by the sender.  
6. Shipping charges are not the responsibility of ADC. ALL returns should be "prepaid" to the  
factory. Any "C.O.D." or "COLLECT" returnswill not be accepted.  
IMPORTANT: No replacements, credits, or refunds will be issued if the claim cannot be  
processed due to insufficient information. The party filing the claim will be  
notified in writing, either by "FAX" or "CERTIFIED MAIL - Return Receipt  
Requested", as to the information necessary to process claim. If a reply is not  
received by the ADC Warranty Department within thirty (30) days from the  
FAX/letter date, then no replacement, credit, or refund will be issued, and the  
merchandise will be discarded.  
43  
 
SECTION VI  
ROUTINE MAINTENANCE  
A. CLEANING  
A program and/or schedule should be established for periodic inspection, cleaning, and removal of lint from  
various areas of the dryer, as well as throughout the duct work system. The frequency of cleaning can best be  
determined from experience at each location. Maximum operating efficiency is dependent upon proper air  
circulation. The accumulation of lint can restrict this air flow. If the guidelines in this section are met, an ADC  
dryer will provide many years of efficient, trouble-free, and - most importantly - safe operation.  
WARNING: LINT FROM MOST FABRICS IS HIGHLY COMBUSTIBLE. THE  
ACCUMULATION OF LINT CAN CREATE A POTENTIAL FIRE  
HAZARD.  
WARNING: KEEP DRYER AREA CLEAR AND FREE FROM COMBUSTIBLE  
MATERIALS, GASOLINE, and OTHER FLAMMABLE VAPORS and  
LIQUIDS.  
NOTE: Suggested time intervals shown are for average usage which is considered six (6) to  
eight (8) operational (running) hours per day.  
Clean the lint drawer/screen every third or fourth load.  
NOTE: Frequency can best be determined at each location.  
SUGGESTED CLEANING SCHEDULE  
DAILY (beginning of each work shift)  
1. Clean lint from screen.  
2. Inspect lint screen and replace if torn.  
WEEKLY  
Clean lint accumulation from lint chamber, thermostat, and microprocessor temperature sensor (sensor bracket)  
area.  
WARNING: TO AVOID THE HAZARD OF ELECTRICAL SHOCK, DISCONTINUE  
ELECTRICAL SUPPLY TO THE DRYER.  
44  
 
STEAM DRYERS  
Clean the steam coil fins. We suggest using compressed air and a vacuum cleaner with brush attachment.  
WARNING: When cleaning steam coil fins, be careful not to bend the fins. If fins are bent,  
straighten by using a fin comb which is available from local air-conditioning  
supply houses.  
90 DAYS  
Remove lint from around basket (tumbler), drive motors, and surrounding areas. Remove lint from gas  
valve burner area with a dusting brush or vacuum cleaner attachment.  
NOTE: To prevent damage, avoid cleaning and/or touching ignitor/flame-probe assembly.  
Remove lint accumulation from inside control box and at the rear area behind control box.  
Impellor (fan/blower) shaft bearings should be lubricated. Use a #3 grease or equivalent.  
6 MONTHS  
Inspect and remove lint accumulation in customer furnished exhaust duct work system and from dryers  
internal exhaust ducting.  
Impellor (fan/blower) belts and drive belts should be examined. Cracked and/or seriously frayed belts  
should be replaced. Tighten belts when necessary.  
WARNING: THE ACCUMULATION OF LINT IN THE EXHAUST DUCT WORK CAN  
CREATE A POTENTIAL FIRE HAZARD.  
WARNING: DO NOT OBSTRUCT THE FLOW OF COMBUSTION and VENTILATION  
AIR. CHECK CUSTOMER FURNISHED BACK DRAFTED DAMPERS IN  
EXHAUST DUCK WORK. INSPECT and REMOVE ANY LINT  
ACCUMULATION WHICH CAN CAUSE DAMPER TO BIND OR STICK.  
NOTE: A back draft damper that is sticking partially closed can result in slow drying and  
shutdown of the heat circuit safety switches or thermostats.  
NOTE: When cleaning dryer cabinet(s), avoid using harsh abrasives. A product intended for  
the cleaning of appliances is recommended.  
45  
 
B. ADJUSTMENTS  
7 Days After Installation and Every 6 Months Thereafter  
Inspect bolts, nuts, screws (bearing set screws), non-permanent gas connections (unions, shut-off valves,  
orifices, and grounding connections). Motor and drive belts should be examined. Cracked or seriously  
frayed belts should be replaced. Tighten loose V-belts when necessary. Complete operational check of  
controls and valves. Complete operational check of ALL safety devices (door switch, lint drawer switch,  
sail switch, burner and hi-limit thermostats).  
C. LUBRICATION  
1. Impellor (fan/blower) shaft bearings should be lubricated every (3) months. Use a #3 grease or equivalent.  
2. The motor bearings, idler bearings, and tumbler bearings are permanently lubricated.  
NO LUBRICATION IS NECESSARY.  
46  
 
SECTION VII  
TROUBLESHOOTING  
IMPORTANT: YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and  
THE GAS SUPPLY or THE STEAM SUPPLY BEFORE ANY COVERS  
or GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS  
FOR CLEANING, ADJUSTING, INSTALLATION, or TESTING OF ANY  
EQUIPMENT per OSHA (Occupational Safety and Health Administration)  
STANDARDS.  
The information provided will help isolate the most probable component(s) associated with the difficulty  
described. The experienced technician realizes, however, that a loose connection or broken/ shorted wire may  
be at fault where electrical components are concerned ... and not necessarily the suspected componentitself.  
Electrical parts should always be checked for failure before being returned to the factory.  
Theinformation provided should not be misconstrued as a handbook for use by an untrained person making  
repairs.  
IMPORTANT: When replacing blown fuses, the replacement must be of the exact rating as the  
fuse being replaced.  
WARNING: ALL SERVICE and TROUBLESHOOTINGSHOULD BE PERFORMEDBYA  
QUALIFIED PROFESSIONAL OR SERVICE AGENCY.  
WARNING: WHILE MAKING REPAIRS, OBSERVEALL SAFETY PRECAUTIONS  
DISPLAYED ON THE DRYER or SPECIFIED IN THIS MANUAL.  
MICROPROCESSOR (COMPUTER) MODELS  
A. No L.E.D. display (microprocessor [computer] models ONLY) ...  
1. Service panel fuse blown or tripped breaker.  
2. Blown control circuit L1 or L2 fuse.  
3. Failed microprocessor controller (computer).  
B. Drive motor not operating (does not start) ...  
1. Failed drive motor contactor (relay).  
47  
 
2. Failed arc suppressor (A.S.) board.  
3. Failed drive motor.  
4. Failed microprocessor controller (computer).  
C. Drive motor (reversing) operates in one direction only ... stops and restarts in same direction ...  
1. Failed drive motor contactor (relay).  
2. Failed arc suppressor (A.S.) board.  
3. Failed microprocessor controller (computer).  
D. Drive motor operates okay for a few minutes, and then stops and will not restart ...  
1. Motor is overheating and tripping out on internal overload protector ...  
a. Motor air vents clogged with lint.  
b. Low voltage to the motor.  
c. Failed motor.  
d. Basket (tumbler) is binding ... check for obstruction.  
e. Failed idler bearings or tumbler bearings.  
E. Blower motor not operating (does not start) ...  
1. Tripped or failed overload protector.  
2. Failed blower motor contactor (relay).  
3. Failed arc suppressor (A.S.) board.  
4. Failed motor.  
5. Failed microprocessor controller (computer).  
F. Blower motor operates okay for a few minutes, then stops and will not restart ...  
1. Motor is overheating and tripping out on internal overload protector ...  
a. Motor air vents clogged with lint.  
b. Low voltage to the motor.  
c. Failed motor.  
d. Failed (out of balance) impellor (fan/blower).  
48  
 
G. Both drive motor and blower motor not operating (do not start) ...  
microprocessor controller (computer) motor indicator dots are on ...  
1. Failed arc suppressor (A.S.) board.  
2. Failed microprocessor controller (computer).  
H. Both drive motor and blower motor run a few minutes and then stop...microprocessor controller  
(computer) display continues to read time or percent of extraction and all indicator dots are off ...  
1. Fault in main door switch circuit ...  
a. Failedmaindoorswitch.  
b. Main door switch out of adjustment.  
c. Loose connection in door switch circuit.  
2. Fault in lint drawer switch circuit...  
a. Lint drawer switch out of proper adjustment.  
b. Loose connection in the lint drawer switch circuit.  
I. Microprocessor (computer) display reads "dSFL" ...  
1. Fault in microprocessor heat sensing circuit ...  
a. Blown 1/8-amp ("dSFL") fuse on microprocessor controller (computer).  
b. Failed microprocessor temperature sensor.  
c. Failed microprocessor controller (computer).  
d.Broken wire or connection somewhere between the microprocessor controller (computer) and the micro  
processor temperature sensor.  
J. Microprocessor controller (computer) display reads "door" ...  
1. Fault (open circuit) in main door or lint drawer switch circuit ...  
a. Lint drawer is not closed all the way.  
b. Lint drawer switch out of proper adjustment.  
c. Failed lint drawer switch.  
d.Failedmaindoorswitch.  
e. Broken connection / wire in main door or lint drawer circuit.  
f. Failed 24 VAC Transformer.  
49  
 
K. Microprocessor controller (computer) will not accept any keyboard entries, i.e., L.E.D. display  
reads "FILL" and when keyboard entries are selected, the L.E.D. display continues to read  
"FILL" ...  
1. Failed keyboard label (touchpad) assembly.  
2. Failed microprocessor controller (computer).  
L. Microprocessor controller will only accept certain keyboard entries ...  
1. Failed keyboard label (touchpad) assembly.  
2. Failed microprocessor controller (computer).  
M. Microprocessor controller (computer) locks up and L.E.D. display reads erroneous message(s) or  
only partial segments ...  
1. Transient power voltage (spikes)...disconnect power to dryer, wait one (1) minute, and reestablish power  
to dryer. If problem is still evident ...  
a. Failed microprocessor controller (computer).  
b. Failed keyboard label (touchpad) assembly.  
N. Dryer stops during a cycle and L.E.D. display returns to "FILL" ...  
1. Fault in microprocessor heat sensor circuit ...  
a. Loose connection in wires between temperature sensor and microprocessor controller (computer).  
2. Loose connection somewhere in main power circuit to microprocessor controller (computer).  
O. Gas heating unit is not operating (no heat)...no spark at burner area when dryer is first started, and  
heat indicator dot is on ...  
1. Fault in sail switch circuit ...  
a. Sail switch is out of adjustment or has failed.  
b. Sail switch damper is not closing or is fluttering ...  
1) Lint screen is dirty.  
2) Restriction in exhaust.  
2. Fault in burner hi-limit circuit or thermostat.  
3. Fault in lint chamber sensor bracket hi-heat protector thermostat.  
4. Failed Direct Spark Ignition (DSI) module.  
5. Failed DSI ignitor / flame-probe assembly.  
6. Failed microprocessor controller (computer).  
50  
 
P. No heat (GAS MODEL ONLY)...ignitor sparks, burner goes on and off right away ...  
1. DSI ignitor / flame-probe out of adjustment...reposition closer to the flame area.  
2. Sail switch is fluttering ...  
a. Lint screen dirty.  
b. Restriction in exhaust duct work.  
3. Insufficient make-up air.  
4. Failed ignitor / flame-probe assembly.  
5. Failed Direct Spark Ignition (DSI) module.  
6. Failed gas valve.  
Q. No heat (for STEAM MODELS ONLY) ...  
1. Fault in lint chamber sensor bracket hi-heat (limit) protector thermostat.  
2. Failed microprocessor controller (computer).  
3. No (external) compressed air to steam damper (80 psi required).  
4. Failed steam damper 24 VAC pneumatic solenoid switch.  
5. Failedpiston.  
6. Steam damper stuck closed.  
7. Air flow control valve restricting incoming compressed air.  
R. No heat (for ELECTRIC MODELS ONLY) ...  
1. Fault in sail switch circuit...  
a. Sail switch out of adjustment and/or faulty (failed).  
b. Sail switch not closing or fluttering...  
1) Check impellor (fan/blower) motor and rotation direction.  
2) Restriction in the location exhaust system.  
2. Failed oven hi-limit.  
3. Failed lint compartment automatic (225º) safety thermostat.  
4. Failed oven contactor (relay).  
5. Failed microprocessor controller (computer).  
51  
 
S. Dryer operates but is taking too long to dry ...  
1. Exhaust duct work run too long or is undersized...back pressurecannot exceed .3 inches Water Column  
(W.C.).  
2. Restriction in exhaust ...  
a. Exhaust back draft damper is sticking partially closed.  
b. Restriction in duct work...check duct work from dryer all the way to the outdoors.  
3. Low and/or inconsistent gas pressure(for GAS MODELS ONLY).  
4. Insufficient make-up air.  
5. Poor air / gas mixture at burner...yellow or poor flame pattern; adjust gas burner air adjustment shutters  
(for GAS MODELS ONLY).  
6. Lint screen not being cleaned on a regular basis or often enough.  
7. Extractors (washers) not performing properly.  
8. Sail switch is fluttering...restriction in exhaust(for GAS MODELS ONLY).  
9. Failed microprocessor controller (computer)...temperature calibration is inaccurate.  
10. Failed microprocessor temperature sensor calibration is inaccurate.  
11. Failed burner hi-limit (for GAS MODELS ONLY).  
12. Failed lint chamber hi-heat protector thermostat.  
13. Steam damper system not functioning properly(for STEAM MODELS ONLY).  
a. Steam damper sticking closed.  
b. Leak in the pneumatic system.  
c. Flow control incorrectly set.  
T. Condensation on main door glass ...  
1. Too long, undersized, or improperly installed duct work.  
2. Dryer connected to common exhaust duct with another dryer and no back draft damper was installed in  
customer furnished duct work.  
3. Back draft damper is sticking in partially closed position.  
52  
 
U. Dryer or scraping noise at basket (tumbler) area ...  
1. Check for object caught in basket (tumbler) / wrapper area.  
2. Basket (tumbler) is out of proper alignment ...  
a. Check both vertical and lateral alignment.  
b. Check gap between front panel and basket (tumbler) front...set screws may have come loose, and basket  
(tumbler)walkedforwardorbackwards.  
3. Loose basket (tumbler) tie rod.  
4. Failed basket (tumbler) support.  
V. Excessive noise and/or vibration ...  
1. Dryer not leveled properly.  
2. Impellor (fan) out of balance ...  
a. Excessive lint build up on impellor (fan/blower).  
b. Failed impellor (fan/blower).  
3. Loose basket (tumbler) tie rod.  
4. Basket out of adjustment, or adjustment bolts (hardware) are loose.  
5. Failed basket (tumbler) support.  
6. Loosemotormount.  
7. Failed idler and/or tumbler bearings.  
8. V-belt(s) either too tight or too loose.  
TIMERMODELS  
A. Dryer will not start. Both drive and blower motors not operating (indicator light is off) ...  
1. Dryer control circuit fuse is blown.  
2. Open at location...  
a. service main fuse or circuit breaker.  
3. Failed push to start relay.  
4. Failed door switch and/or circuit.  
5. Failed heat timer.  
6. Failed dual timer relay.  
53  
 
B. Drive motor (only) not operating (does not start)...  
1. Failed drive motor contactor.  
2. Failed reversing timer(for Reversing Models ONLY).  
3. Failed drive motor.  
C. Blower (impellor/fan) motor (only) not operating (does not start)...  
1. Tripped or failed overload.  
2. Failed impellor (impellor/fan) motor contactor (relay).  
3. Failed reversing timer.  
4. Failed blower (impellor/fan) motor.  
D. Both drive and blower (impellor/fan) motors not operating (do not start) and indicator lightis on...  
1. Fault with L1 termination at reversing timer(for Reversing Models ONLY).  
E. Reversing drive motor operates in one direction only, stops, and restarts in same direction  
(for Reversing Models ONLY) ...  
1. Failed reversing contactor (relay).  
2. Failed reversing timer.  
F. Heating unit not operating (no heat)...no voltage at heating unit (i.e., Gas Model DSI module or  
Steam Model damper system pneumatic solenoid)...  
GAS MODELS  
1. Fault in sail switch circuit ...  
a. Sail switch out of adjustment and/or has failed.  
b. Sail switch damper is not closing or is fluttering ...  
1) Check blower (impellor / fan) motor and rotation direction.  
2) Restriction in exhaust.  
3) Lint drawer / screen is dirty.  
2. Failed burner hi-limit circuit.  
3. Failed lint compartment automatic (225º) safety thermostat circuit.  
4. Failed Direct Spark Ignition (DSI) Module (burner control).  
5. Failed Direct Spark Ignition (DSI) ignitor/flame-probe assembly.  
6. Failed heat selector switch.  
54  
 
ELECTRIC MODELS  
1. Fault in sail switch circuit ...  
a. Sail switch out of adjustment and/or has failed.  
b. Sail switch is not closing or is fluttering ...  
1) Check blower (impellor / fan) motor and rotation direction.  
2) Restriction in exhaust.  
2. Failed oven hi-limit circuit.  
3. Failed lint compartment automatic (225º) safety thermostat circuit.  
4. Failed oven contactor (relay).  
5. Failed heat selector switch.  
STEAM MODELS  
1. Steam damper binding and/or stuck.  
2. No (external) compressed air to the steam damper...80 PSI required.  
3. Failed lint compartment automatic (225º) safety thermostat circuit.  
4. Failed steam damper 24 VAC pneumatic solenoid switch.  
5. Air flow control valve restricting incoming compresses air.  
6. Failed heat selector switch.  
7. Failed steam damper piston.  
G. Heat unit not operating for only one (1) temperature selection ...  
1. Failed thermostat corresponding to selection made.  
2. Failed heat selector switch  
H. Dryer operates but is taking too long to dry load ...  
1. Heating unit cycling on hi-limit thermostat(for GAS and ELECTRIC MODELS ONLY).  
2. Steam damper binding in partially open position(for STEAM MODELS ONLY).  
3. Lint and/or dust accumulation on steam coil fins(for STEAM MODELS ONLY).  
4. Housekeeping ...  
a. Lint screen and lint compartment not being cleaned on a regular basis.  
55  
 
b. Lint accumulation in location exhaust system.  
5. Insufficient make-up air.  
6. Failed hi-limit thermostat (for GAS and ELECTRIC MODELS ONLY).  
7. Failed lint compartment automatic (225º) safety thermostat circuit.  
8. Extractors not performing properly.  
9. Low and/or inconsistent gas pressure (for GAS MODELS ONLY).  
10. Gas supply may have low heating value (for GAS MODELS ONLY).  
11. Sail switch is fluttering (for GAS and ELECTRIC MODELS ONLY)...  
a. Restriction in location exhaust system.  
12. Fault in electric oven element circuit (for ELECTRIC MODELS ONLY) ...  
a. Failed element(s).  
b.Failed oven contactor (relay).  
13. Exceptionally cold / humid or low barometric pressure atmosphere.  
14. Blower (impellor / fan) motor rotation direction is incorrect.  
I. Dryer is cycling on hi-limit thermostat (for GAS and ELECTRIC MODELS ONLY) ...  
1. Blower (impellor / fan) motor rotation direction is incorrect.  
2. Insufficient make-up air.  
3. Restriction in exhaust system ...  
a. Undersizedexhaustducting.  
4. Lint screen needs cleaning.  
5. Failed hi-limit thermostat.  
6. Failed oven contactor (relay) -for ELECTRIC MODELS ONLY.  
J. Condensation on main door glass...  
1. Too long, undersized, or improperly installed duct work.  
2. Dryer connected to common exhaust duct with another dryer, and no back draft damper was installed in  
customer-furnished duct work.  
3. Location furnished back draft damper in duct work is sticking in partially closed position.  
56  
 
K. Dryer scraping noise at basket (tumbler) area...  
1. Check for object caught in basket (tumbler) / wrapper area.  
2. Basket (tumbler) is out of proper alignment.  
a. Check both vertical alignment and lateral alignment.  
b. Check gap between front panel and basket (tumbler) ... set screws may have come loose, and basket  
(tumbler) walked forward or back.  
3. Loose basket (tumbler) tie rod.  
4. Failed basket (tumbler) support.  
L. Excessive noise and/or vibration...  
1. Dryer is not leveled properly.  
2. Impellor (fan/blower) is out of balance.  
a. Excessive lint build-up impellor (fan / blower).  
b. Failed impellor (fan / blower).  
3. Loose basket (tumbler) tie rod.  
4. Basket (tumbler) out of adjustment bolts (hardware) are loose.  
5. Failed basket (tumbler) support.  
6. Loosemotormount.  
7. Failed idler bearings or tumbler (basket) bearings.  
8. V-belts too loose or too tight.  
9. Failed fan (blower) shaft bearings or set screw(s) may be loose.  
57  
 
SECTION VIII  
REVERSING TIMER SPIN/DWELL ADJUSTMENTS  
Timer models have an electric reversing timer in the electric service box which is located in the upper left rear  
area of the dryer.  
Both the Dwell (stop) Time and basket (tumbler) Spin Time are adjustable by mode selection switches located  
on the electronic timer (as noted in the illustration below).  
Timing Legend  
Spin Time  
Switch Position Number  
Time in Seconds*  
1
2
3
4
5
30  
60  
90  
120  
150  
Dwell (Stop) Time  
Switch Position Number  
Time in Seconds*  
1
5
2
6
3
8
4
5
10  
12  
* Values shown are +/- 1 second.  
58  
 
SECTION X  
PROCEDURE FOR FUNCTIONAL CHECK OF  
REPLACEMENT COMPONENTS  
1. Microprocessor (computer) Board  
a. Upon completing installation of the replacement microprocessor (computer) board,  
reestablish power to the dryer.  
b. Start the drying cycle.  
c. Verify that the motor(s) and the heat indicator dots, in the microprocessor (computer) L.E.D.  
display are on. (Refer to the illustration below.)  
d. Verify that motor(s) heat, and door indicator lights on the back side of the microprocessor (computer  
board are lit. (Refer to illustration below.)  
59  
 
e. Open main door. The dryer must stop and ALL output indicator lights on the back side of the  
microprocessor (computer) board must go out.  
f. Try to restart the dryer with the main door open.  
g. The microprocessor (computer) board's L.E.D. display must read "DOOR."  
h. Close the main door and restart the dryer.  
i. Functional check of microprocessor (computer) board is complete.  
2. Direct Spark Ignition (DSI) System  
a. Upon completing installation of the replacement  
Direct Spark Ignition (DSI) module, reestablish power  
to the dryer.  
b. Start the drying cycle.  
c. The ignition (DSI) module's L.E.D. indicator will light  
"red" for up to approximately 1.5 seconds (pre-purge  
time).  
d. The module's indicator light will then turn "green." The  
gas valve will be energized and the ignitor probe will  
spark for approximately 8 seconds. The burner flame  
should now be established.  
e. With the burner flame on, remove the flame sensor wire  
from the FS terminal of the DSI module.  
f. The burner flame must shut off and the ignition  
module must lock out with the DSI module's indicator  
light "red".  
g. Stop the drying cycle, with the flame sensor wire still  
removed, restart the drying cycle.  
h. The ignition module must proceed through the  
pre-purge, with the indicator light "red", the ignition  
trial time of approximately 8 seconds, with the  
indicator light "green", and then proceed to lock out  
with the indicator light "red".  
i. Functional check of the Direct Spark Ignition (DSI) Module is complete.  
1) Replace the flame sensor wire from the FS terminal to the DSI module.  
60  
 
ADC 112185  
1- 07/05/95-100  
4* 09/04/96-250  
7* 01/19/98-100  
2- 07/27/95-250  
5* 03/12/97-250  
8- 04/16/98-100  
3* 03/20/96-250  
6- 10/14/97-100  
9* 07/17/98-200  
10* 03/12/99-100 11- 08/13/99-100 12* 01/03/00-125  
13- 05/09/00-125 14- 09/28/00-100  
 

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