American Dryer Corp. Gas/Electric/Steam ML-55HS Installation manual

ML-55HS
(Gas/Electric/Steam)
Installation Manual
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 death.
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.
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
* 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.
Installation and service must be performed by a
qualified installer, service agency or the gas
supplier.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR
DE GAZ:
* 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.
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 reseller 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
www.amdry.com
ADC Part No. 113000
Retain This Manual In A Safe Place For Future Reference
American Dryer Corporation products embody advanced concepts in engineering, design, and safety. If this product is
properly maintained, it will provide many years of safe, efficient, and trouble-free operation.
ONLY qualified technicians should service this equipment.
OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation manual included with
the dryer.
The following “FOR YOUR SAFETY” caution must be posted near the dryer in a prominent location.
FOR YOUR SAFETY
POUR VOTRE SÉCURITÉ
Do not store or use gasoline or
other flammable vapors or
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 yout autre appareil.
We have tried to make this manual as complete as possible and hope you will find it useful. ADC reserves the right to make
changes from time to time, without notice or obligation, in prices, specifications, colors, and material, and to change or
discontinue models.
Important
For your convenience, log the following information:
DATE OF PURCHASE ____________________________
MODEL NO.
ML-55HS
__________________________________________
RESELLER’S NAME _______________________________________________________________________________________
Serial Number(s)
________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Replacement parts can be obtained from your reseller or the ADC factory. When ordering replacement parts from the factory,
you can FAX your order to ADC at (508) 678-9447 or telephone your order directly to the ADC Parts Department at
(508) 678-9000. Please specify the dryer model number and serial number in addition to the description and part number, so
that your order is processed accurately and promptly.
“IMPORTANT NOTE TO PURCHASER”
Information must be obtained from your local gas supplier on the instructions
to be followed if the user smells gas. These instructions must be posted in a
prominent location near the dryer.
IMPORTANT
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.
“Caution: Label all wires prior to
disconnection when servicing controls. Wiring
errors can cause improper operation.”
«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
DRYERS SHOULD NEVER BE LEFT UNATTENDED WHILE IN OPERATION.
WARNING
CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR NEAR THE DRYERS.
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 dryer door switches, lint door switch, heat
safety circuit 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 or
specified in the installation 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 ............................................................................... 3
A. Receiving and Handling ............................................................................................................... 3
B. Safety Precaution ........................................................................................................................ 4
SECTION II
SPECIFICATIONS/COMPONENT IDENTIFICATION .................................... 6
A. Specifications .............................................................................................................................. 6
B. Component Identification ............................................................................................................. 8
SECTION III
INSTALLATION PROCEDURES ......................................................................... 10
A. Location Requirements .............................................................................................................. 10
B. Unpacking/Setting Up ............................................................................................................... 11
C. Dryer Enclosure Requirements .................................................................................................. 12
D. Fresh Air Requirements ............................................................................................................. 13
E. Exhaust Requirements ................................................................................................................ 14
F. Electrical Information ................................................................................................................ 18
G. Gas Information ......................................................................................................................... 25
H. Steam Information ..................................................................................................................... 28
I. Preparation For Operation/Start-Up .......................................................................................... 34
J. Preoperational Tests ................................................................................................................... 35
K. Preoperational Instructions ......................................................................................................... 37
L. Shut Down Instructions .............................................................................................................. 38
SECTION IV
SERVICE/PARTS INFORMATION ...................................................................... 39
A. Service ...................................................................................................................................... 39
B. Parts .......................................................................................................................................... 39
SECTION V
WARRANTY INFORMATION .............................................................................. 40
A. Returning Warranty Card(s) ...................................................................................................... 40
B. Warranty ................................................................................................................................... 40
C. Returning Warranty Part(s) ........................................................................................................ 40
SECTION VI
ROUTINE MAINTENANCE .................................................................................. 42
A. Cleaning ................................................................................................................................... 42
B. Adjustments .............................................................................................................................. 43
C. Lubrication ............................................................................................................................... 43
SECTION VII
PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT
COMPONENTS ....................................................................................................... 44
SECTION VIII
REVERSING TIMER SPIN/DWELL ADJUSTMENTS .................................... 47
SECTION IX
DATA LABEL INFORMATION ............................................................................. 48
A. Data Label ................................................................................................................................ 48
SECTION X
BURNER and BASKET (TUMBLER)/LINT CHAMBER MANUAL RESET
HI-LIMIT INSTRUCTIONS ................................................................................... 50
Gas ................................................................................................................................................ 50
Electric or Steam ............................................................................................................................ 51
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 basket (tumbler) section of the dryer must be transported and handled in an
upright position at ALL times.
3
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 dryer, 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,
or wax.
EXPLOSION COULD RESULT.
WARNING: DO NOT dry mop heads. Contamination by wax or flammable solvents will create a
fire hazard.
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.
4
7. A program should be established for the inspection and cleaning of lint in the heating unit area, exhaust
ductwork, 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 ductwork 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 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.
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 (8.6 bars) steam pressure. Excessive steam
pressure can cause damage to the 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. 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.
15. READ and FOLLOW ALL CAUTION and DIRECTION LABELS ATTACHED TO THE DRYER.
16. For safety, proper operation, and optimum performance, the dryer must not be operated with a load less
than sixty-six percent (66%), 36 pounds (16 kg) of its rated capacity.
WARNING: 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.
5
SECTION II
SPECIFICATIONS/COMPONENT IDENTIFICATION
A. SPECIFICATIONS
WITHOUT HEAT RECLAIMER
MAXIMUM CAPACITY (DRY WEIGHT)
BASKET (TUMBLER) DIAMETER
BASKET (TUMBLER) DEPTH
BASKET (TUMBLER) VOLUME
MOTOR (HORSEPOWER)
DOOR OPENING
APPROX. WEIGHT (UNCRATED)
APPROX. WEIGHT (CRATED)
AIRFLOW
HEAT INPUT
GAS INLET
VOLTAGE AVAILABLE
55 lbs
37"
30"
18.67 cu. ft.
3/4 HP
31-3/8"
585 lbs
645 lbs
600 cfm
160,000 btu/hr
286 kg
313 kg
375 cfm
140,000 btu/hr
120 VOLTS
10.6 cmm
35,280 kcal/hr
1/2"
OR
230 VOLTS
17 cmm
APPLIED VOLTAGE/PHASE
btu/hr
kcal/hr
60 Hz
68,260
81,910
102,390
50 Hz
17,200
20,640
25,800
AIRFLOW
STEAM CONSUMPTION
144.7 lb/hr
630 lbs
690 lbs
ELECTRIC
600 cfm
65.7 kg/hr
AMPS
20
24
30
WITH
HEAT RECLAIMER
1/2"
AIRFLOW
OVEN SIZE
Kw
25 kg
94 cm
76.2 cm
0.528 cu. m.
0.56 kw
79.7 cm
265 kg
293 kg
GAS
17 cmm
40,320 kcal/hr
208/1ø
60 Hz
103
-----
240/1ø
208/3ø
240/3ø
50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz
-------
90 ----- ----- --STEAM*†
600 cfm
BOILER HP
NORMAL LOAD
4.2
--70
86
-------
--62
75
380/3ø
416/3ø
50 Hz 60 Hz 50 Hz 60 Hz
--62
75
-------
33
-----
-------
460/3ø
50 Hz 60 Hz
--36
44
17 cmm
OPERATING
STEAM PRESSURE
125 psi
8.6 bar
STEAM
SUPPLY
1"
STEAM
RETURN
1"
Shaded areas are stated in metric equivalents
*
Specify Air-Operated Steam Damper system or Electromechanical Steam Damper system when ordering.
† Air-Operated Steam Damper system must be provided with a clean, dry, regulated 80 psi ± 10 psi (5.52 bars ± 0.68 bars).
Air connection is 1/8" N.P.T. Air volume requirement is 0.75 cfh (0.02cmh).
IMPORTANT: Steam dryers must be provided with clean, dry, regulated 80 PSI ± 10 PSI
(5.52 bars ± 0.68 bars) air supply.
NOTE: ADC reserves the right to make changes in specifications at any time without notice or
obligation.
6
50 Hz
--31
38
-------
Specifications
MLG-55HS
MLE-55
MLS-55
NOTE: ADC reserves the right to make changes in specifications at any time without notice or
obligation.
7
B. COMPONENT IDENTIFICATION
1. Dryer Front View
Illus. No.
1
2
3
4
5
Description
Controls
Control (top access) Door Assembly
Main Door Assembly
Lint Compartment Area (lint screen located behind door)
Data Label and Installation Label (located on the backside of the upper control door).
8
2. Dryer Rear View
Illus. No.
1
2
3*
4
5
6
7
8
9
Description
Heating Unit
1/8" Compressed Air Supply Inlet
(located behind the electric service relay box on steam models ONLY)
Electric Service Relay Box
Basket (Tumbler) Bearing Mount Assembly
Idler Bearing Mount Assembly
Blower Motor Assembly (Reversing Models ONLY)
Leveling Leg (rear)
Basket (Drive) Motor Assembly
Dryer Exhaust
* Electric service connections for gas and steam models are made in this box.
NOTE: 1/8-inch compressed air supply inlet (for steam models only) is located behind the electric
service relay box.
9
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 Z223.1LATEST EDITION (National Fuel Gas Code) or ANSI/NFPA NO. 70-LATEST EDITION (National Electrical
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 (Liquid Propane [L.P.] Gas) or LATEST EDITION (for General
Installation and Gas Plumbing) 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 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).
1. The dryer must be installed on a sound level floor capable of supporting its weight. Carpeting must be
removed from the floor area that the dryer is to rest on.
IMPORTANT: “The dryer must be installed on noncombustible floors only.”
2. The dryer must not be installed or stored in an area where it will be exposed to water and/or weather.
3. The dryer is for use in noncombustible locations.
4. Provisions for adequate air supply must be provided as noted in this manual (refer to Fresh Air
Requirements in Section D).
5. Clearance provisions must be made from combustible construction as noted in this manual (refer to Dryer
Enclosure Requirements in Section C).
6. 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).
7. Dryer must be exhausted to the outdoors as noted in this 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 the manual
(refer to Exhaust Requirements in Section E).
IMPORTANT: Dryer should be located where a minimum amount of exhaust duct will be necessary.
10
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) bolts securing the base of the dryer to the wooden skid. Two (2) are 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) bolts located in the lint chamber area, remove the lint door.
With the skid removed, to make it easier to slide the dryer into its final position, slightly lower ALL four (4)
leveling legs, so that the dryer will slide on the legs instead of the base frame.
To increase bearing life and improve efficiency, the dryer should be tilted slightly to the rear.
The basket (tumbler) is supported during shipping by a wooden block. REMOVE THIS BLOCK BEFORE
STARTING THE DRYER.
IMPORTANT: For microprocessor controller (computer) or (computer) models, this wooden
block must be removed before connecting power to the dryer or irreparable
damage to the basket (tumbler) will result.
The lint coops of ALL ML-55 dryers are supported during shipping by a bracket. REMOVE THIS BRACKET
BEFORE STARTING THE DRYER.
1. Leveling Dryer
The dryer is equipped with four (4) leveling legs, one (1) at each corner of the base. Two (2) are located at
the rear of the dryer base, and two (2) are located in the lint chamber (coop). To increase bearing life and
improve efficiency, the dryer should be tilted slightly to the rear.
11
C. DRYER ENCLOSURE REQUIREMENTS
Bulkheads and partitions should be made of noncombustible materials and must be located a minimum of
12-inches (30.48 cm), 18-inches (45.72 cm) or more is recommended for ease of installation, maintenance, and
service, above the dryer outer top, except along the front of the dryer which may be partially closed in if desired.
The clearance between the bulkhead header and the dryer must be a minimum of 4-inches (10.16 cm) and must
not extend more than 4-inches (10.16 cm) to the rear of the front. The bulkhead facing must not be closed in
ALL the way to the top of the dryer. A 1-inch (2.54 cm) clearance is required.
NOTE: Allowances must be made for opening the control door.
Dryers may be positioned sidewall to sidewall. However, a 1/16-inch (1.58 mm) minimum allowance must be
made for opening and closing of the control door and the lint door. It is suggested that the dryer be positioned
about 2 feet (0.61 meters) away from the nearest obstruction for ease of installation, maintenance, and service
(to be measured from the back guard.) Refer to the illustration above for details.
NOTE: Air considerations are important for proper and efficient operation.
IMPORTANT: Even though a minimum of only 12-inches (30.48 cm) is required, 18-inches (45.72
cm) or more is suggested. The additional clearance is advantageous for ease of
installation and service.
IMPORTANT: When fire sprinkler systems are located above the dryers, a minimum of 18-inches
(45.72 cm) above the dryer console (module) is required. Dryers may be positioned
sidewall to sidewall however, a 1/16-inch (1.58 mm) minimum allowance is required
between dryers (or wall) for ease of installation and maintenance. Allowances must be
made for the opening and closings of the control door and the lint door.
12
D. FRESH AIR REQUIREMENTS
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 600 cfm (cubic feet per minute) - 17 cmm
(cubic meters per minute) must be supplied to each gas, electric, and steam dryer. As a general rule, an
unrestricted air entrance from the outdoors (atmosphere) of a minimum of 1-1/4 square foot (0.12 square meters)
is required for each dryer.
To compensate for the use of registers or louvers used over the openings, this make-up air must be increased by
approximately thirty-three percent (33%). 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 (4) dryers, two (2) unrestricted openings measuring 2 feet by 1-1/4 feet
(0.61 meters by 0.38 meters), 5 square feet (0.47 square meters) is acceptable
Allowances must be made for remote or constricting passageways or where dryers are located at excessive
altitudes or predominantly low pressure areas.
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 the motors and other dryer components.
NOTE: Component failure due to dry cleaning solvent fumes will VOID THE WARRANTY.
13
E. EXHAUST REQUIREMENTS
1. General Exhaust Ductwork Information
Exhaust ductwork should be designed and installed by a qualified professional. Improperly sized ductwork
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 DUCTWORK CAN
CREATE A POTENTIAL FIRE HAZARD.
The ductwork should be laid out in such a way that the ductwork travels as directly as possible to the
outdoors with as few turns as possible. Single or independent dryer venting is recommended.
Horizontal Venting:
When single dryer venting is used, the length of ductwork from the dryer to the outside exhaust outlet, must
not exceed 15 feet (4.6 meters). The minimum diameter of this ductwork must be at least 8-inches (20.32
cm). In the case of multiple (common) dryer venting, the distance from the last dryer to the outside exhaust
outlet must not exceed 15 feet (4.6 meters). The shape of the ductwork is not critical so long as the
minimum cross-sectional area is provided. It is suggested that the use of 90° turns be avoided; use 30° and/
or 45° angles instead. The radius of the elbows should preferably be 1-1/2 times the diameter of the duct.
Including basket (tumbler)/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-sectional area of the ductwork must be increased. ALL ductwork 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 ductwork 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 ductwork for periodic inspection and cleaning of lint from the ductwork.
Vertical Venting:
When single dryer venting is used, the length of the ductwork from the dryer to the outside exhaust outlet
must not exceed 15 feet (4.6 meters). The minimum diameter of this ductwork must be at least 8-inches
(20.32 cm). In the case of multiple (common) dryer venting, the distance from the last dryer to the outside
exhaust outlet must not exceed 15 feet (4.6 meters). The shape of the ductwork is not critical so long as
the minimum cross-sectional area is provided. It is suggested that the use of 90º turns be avoided; use 30º
and/or 45º angle instead. The radius of the elbows should preferably be 1-1/2 times the diameter of the
duct. ALL ductwork 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 ductwork 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 ductwork for
periodic inspection and cleaning of lint from the ductwork.
IMPORTANT: Exhaust back pressure measured by a manometer in the exhaust duct must not
exceed 0.3 inches (0.74 mb) of water column (W.C.).
IMPORTANT: Minimum ductwork diameter for horizontal venting is 8-inches (20.32 cm) and for
vertical venting the minimum is 8-inches (20.32 cm).
14
NOTE: When the exhaust ductwork passes through a wall, ceiling, or roof made of combustible
materials, the opening must be 2-inches (5.08 cm) larger than the duct (ALL the way around).
The duct must be centered within this opening.
a. Outside Ductwork Protection
1) To protect the outside end of horizontal ductwork from the weather, a 90° elbow bent downward
should be installed where the exhaust exits the building. If the ductwork 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, louvers, or caps on the outside opening of the exhaust
ductwork.
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 ductwork travels as directly as possible to the outdoors with as few turns
as possible. It is suggested that the use of 90° turns in the ducting be avoided; use 30° and/or 45° angles
instead. The shape of the exhaust ductwork is not critical so long as the minimum cross section area is
provided.
IMPORTANT: Minimum duct size for a dryer that is vented horizontally is 8-inches (20.32 cm) for a
round duct or an equivalent of 54 square inches (348.4 square centimeters). THE
DUCT SIZE MUST NOT BE REDUCED ANYWHERE DOWNSTREAM
OF THE DRYER.
IMPORTANT: Exhaust back pressure measured by a manometer at each basket (tumbler) exhaust
duct area must not exceed 0.3 inches (0.74 mb) of water column (W.C.).
IMPORTANT: Minimum duct size for a dryer that is vented vertically is 8-inches (20.32 cm) for a
round duct or an equivalent of 54 square inches (348.4 square centimeters). THE
DUCT SIZE MUST NOT BE REDUCED ANYWHERE DOWNSTREAM
OF THE DRYER.
15
IMPORTANT: For extended ductwork runs, the cross section area of the ductwork can only be
increased to an extent. When the ductwork approaches the maximum limits noted in
this manual, a professional heating, venting, and air conditioning (HVAC) firm should
be consulted for proper venting information.
ALL ductwork 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 ductwork 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 ductwork for periodic inspection and
cleaning of lint from the ductwork.
NOTE: When the exhaust ductwork passes through a wall, ceiling, or roof made of combustible
materials, the opening must be 2-inches (5.08 cm) larger than the duct (ALL the way around).
The duct must be centered within this opening.
a. Outside Ductwork Protection
1) To protect the outside end of horizontal ductwork from the weather, a 90° elbow bent downward
should be installed where the exhaust exits the building. If the ductwork 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, louvers, or caps on the outside opening of the exhaust
ductwork.
16
17
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 Installation Codes CAN/CGA-B149.1-M91 (Natural Gas) or CAN/
CGA-B149.2-M91 (Liquid Propane [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 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.
IMPORTANT: A separate circuit servicing each dryer must be provided.
18
2. Electrical Service Specifications
a. Gas Models and Steam Models ONLY
MLG-55 (Gas)
MLS-55 (Steam)
ELECTRIC SERVICE SPECIFICATIONS (PER DRYER)
IMPORTANT: 208 VAC and 230/240 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) motor curve type ONLY. For others, calculate/verify
correct breaker size according to appliance amp draw rating and type of breaker used.
C. Circuit breakers for 3-Phase (3ø) dryers must be 3-pole type.
SERVICE
VOLTAGE
120
208
230/240
208
230/240
380/400
416
460/480
*
PHASE
1ø
1ø
1ø
3ø
3ø
3ø
3ø
3ø
APPROX.
WIRE
AMP DRAW
SERVICE
60 Hz
50 Hz
12
7.1
6.5
3.1
3.1
----2
--------3.7
2.2
2.3
---
2
2
2
3/4
3/4
3/4
3/4
3/4
MINIMUM
WIRE SIZE
CIRCUIT
BREAKER
*
*
*
*
*
*
*
*
25
15
15
15
15
15
15
15
AWG Stranded Wire Type...size wire as per National Electrical Code or local codes.
(Motor lead type wire is recommended.)
IMPORTANT: Figures shown are for non-reversing models ONLY. For reversing models contact the
factory.
IMPORTANT: The dryer must be connected to the electric supply shown on the data label that is
affixed to the backside of the upper control door. In the case of 208 VAC or 230/
240 VAC, the supply voltage must match the electric service specifications of the
data label exactly.
IMPORTANT: The wire size must be properly sized to handle the related current.
WARNING: 208 VAC and 230/240 VAC ARE 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.
19
3. Grounding
A ground (earth) connection must be provided and installed in accordance with state and local codes. In
the absence of these codes, grounding must conform to applicable requirements of the National Electrical
Code ANSI/NFPA NO. 70-LATEST EDITION, or in Canada, the installation must conform to applicable
Canada Standards: 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.
For added personal safety, when possible, it is suggested that a separate ground wire (no. 18 minimum) be
connected from the ground connection of the dryer to a grounded cold water pipe. DO NOT ground to a
gas pipe or hot water pipe. The grounded cold water pipe must have metal to metal connection ALL the
way to the electrical ground. If there are any non-metallic interruptions, such as, a meter, pump, plastic,
rubber, or other insulating connectors, they must 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.
Provisions are made for ground connection in each dryer at the electrical service connection area.
4. Electrical Connections
NOTE: A wire diagram is located in the front electrical control box for connection data.
a. Gas and Steam Models ONLY
NOTE: A CIRCUIT SERVICING EACH DRYER MUST BE PROVIDED.
1) Single-Phase (1ø) Wiring Connections (Hookup)
The electrical connections on ALL single-phase (1ø) gas and steam dryers are made into the rear
service box located at the upper left area of the dryer.
20
Actual electrical wire connections are made to the L1 and L2 terminals of the motor contactor
located in the rear service box mentioned above. The ground connection is also made to the copper
lug also provided in this box.
S INGLE-P HASE (1Ø) ELECTRICAL CONNECTIONS LEADS
Black
+
Positive
White
Neutral
Green
Ground
or
L2
If local codes permit, power to the dryer can be made by the use of a flexible U.L. listed power cord/
pigtail (wire size must conform to rating of dryer), or the dryer can be hard wired directly to the
service breaker panel. In both cases, a strain relief must be installed where the wiring enters the
dryer.
2) 3-Phase (3ø) Wiring Connections/Hookup "NON-REVERSING MODELS ONLY"
The electrical connections on ALL 3-phase (3ø) gas and steam dryers are made into the rear
service box located at the upper left area of the dryer. Electrical connections for electrically heated
dryers are made in the electric oven area located at the upper rear area of the dryer.
NOTE: A CIRCUIT SERVICING EACH DRYER MUST BE PROVIDED.
If local codes permit, power to a gas or steam dryer can be made by the use of a flexible U.L. listed
power cord/pigtail (wire size must conform to rating of dryer), or the dryer can be hard wired
directly to the service breaker panel. In ALL cases, a strain relief must be installed where the
wiring enters the dryer.
21
The only electrical input connections to the dryer are the 3-phase (3ø) power leads (L1, L2, L3, and
sometimes neutral) and ground. Single-phase (1ø) power for the control circuit is done internally to
the dryer. No single-phase (1ø) input connection is required on a 3-phase (3ø) dryer.
For gas and steam dryers manufactured for operation at 3-phase (3ø), the electrical connections are
made at the power distribution block located in the service box at the rear, upper left corner of the
dryer. The ground connection is made to the copper lug also provided in this box. To gain access to
the service box contactor, the service box cover must be removed.
22
3) 3-Phase (3ø) Wiring Connections/Hookup "REVERSING MODELS ONLY"
The electrical connections on ALL 3-phase (3ø) gas and steam dryers are made into the rear
service box located at the upper left area of the dryer. Electrical connections for electrically heated
dryers are made in the electric oven area located at the upper rear area of the dryer.
IMPORTANT: A separate circuit servicing each dryer must be provided.
If local codes permit, power to a gas or steam dryer can be made by the use of flexible U.L. listed
power cord/pigtail (wire size must conform to rating of dryer), or the dryer can be hard wired
directly to the service breaker panel. In ALL cases, a strain relief must be installed where the
wiring enters the dryer.
The only electrical input connections to the dryer are the
3-phase (3ø) power leads (L1, L2, L3, and sometimes
neutral) and ground. Single-phase (1ø) power for the
control circuit is done internally to the dryer. No
single-phase (1ø) input connection is required on a 3-phase
(3ø) dryer.
For gas and steam dryers manufactured for operation at
3-phase (3ø), the electrical connections are made at the power
distribution block located in the service box at the rear, upper
left corner of the dryer. The ground connection is made to
the copper lug also provided in this box. To gain access to the
service box contactor, the service box cover must be
removed.
23
b. Electrically Heated Models Only
The only electrical input connections to the dryer are the 3-phase (3ø) power leads (L1, L2, L3, and
sometimes neutral) and ground. Single-phase (1ø) power for the control circuit and for any single-phase
(1ø) motors (if present) is done internally to the dryer by the factory at the oven contactor. No singlephase (1ø) input connection is required on a 3-phase (3ø) dryer.
CAUTION: The dryer must be grounded. A ground lug has been provided for this purpose.
Input connection wiring must be sized properly to handle the dryer's current draw. This information is
printed on the dryer's data label.
IMPORTANT: A separate circuit servicing each dryer must be provided.
The electrical input connections are made at the electric oven contactor located inside the assembly at
the rear center upper section of the dryer. The ground connection is made to a copper lug also provided
in this area. To gain access, remove oven rear service cover.
IMPORTANT: A strain relief must be used where the input wiring enters the oven assembly.
24
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 (Liquid Propane [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 shutoff 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 dryer must be isolated from
the gas supply piping system by closing its individual manual shutoff 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 which will VOID 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, 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, 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 to the backside of
the upper control door. If this information does not agree with the type of gas available, DO NOT operate
the dryer. Contact the reseller who sold the dryer or contact 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 (610 meters), unless
elevation requirements of over 2,000 feet (610 meters) 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
(610 meters) are made by changing each burner orifice. If this conversion is necessary, contact the reseller
who sold the dryer or contact the ADC factory.
25
2. Technical Gas Data
a. Gas Specifications
TYPE
OF
G AS
Natural
Manifold Pressure*
Inline Pressure
Liquid Propane
3.5 inches W.C.
8.7 mb
10.5 inches W.C.
26.1 mb
6.0 - 12.0 inches W.C.
14.92 - 29.9 mb
10.5 inches W.C.
26.1 mb
Shaded areas are stated in metric equivalents
* Measured at gas valve pressure tap when the gas valve is on.
b. Gas Connections:
Inlet connection ------------ 1/2-inch N.P.T.
Inlet supply size ------------ 1/2-inch N.P.T. (minimum)
Btu/hr input (per dryer) ----160,000 (40,320 kcal/hr)
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 (14.92 mb) and a maximum of 12.0 inches
(29.9 mb) water column (W.C.) 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 10.5 inches (26.1 mb) 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 G AS
ADC
MODEL
NUMBER
BTU
Per Hour
Rating
MLG-55
160,000
Natural
kcal/hr
Rating Qty. D.M.S.*
40,320
3
#29
140820
Shaded area is stated in metric equivalent
* Drill Material Size (D.M.S.) equivalents are as follows:
Natural Gas ............... #29
Liquid Propane Gas .. #48
Part
Number
= 0.1360" (3.4544 mm).
= 0.0760" (1.9304 mm).
26
Liquid Propane
Part
Qty. D.M.S.*
Number
3
#48
140804
L.P.
Conversion Kit
Part Number
881598
3. Piping/Connections
ALL components/materials must conform to National Fuel Gas Code Specifications ANSI Z223.1-LATEST
EDITION, or in Canada, CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (Liquid Propane
[L.P.] Gas) or LATEST EDITION (for General Installation and Gas Plumbing), as well as local codes and
ordinances and must be done by a qualified professional. 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
BTUs being supplied.
The dryer is provided with a 1/2-inch N.P.T. inlet pipe connection located at the right side of the base of the
dryer. The minimum pipe size (supply line) to the dryer is 1/2-inch N.P.T. For ease in servicing, the gas
supply line of each dryer must have its own shutoff 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 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 at ALL gas connections. It is recommended that a 3/4-inch (19.05 mm)
pipe gas loop be installed in the supply line servicing 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 (29.9 mb) of water
column pressure (W.C.).
27
NOTE: A water column (W.C.) test pressure of 3.5 inches (8.7 mb) for natural gas and 10.5 inches
(26.1 mb) for liquid propane (L.P.) dryers is required at the gas valve pressure tap of each
dryer for proper and safe operation.
A 1/8" 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 gas and L.P. gas must be used.
IMPORTANT: Test ALL connections for leaks by brushing on a soapy water solution (liquid
detergent works well).
WARNING: NEVER TEST FOR LEAKS WITH A FLAME!!!
ALL components/materials must conform to National Fuel Gas Code Specifications ANSI Z223.1-LATEST
EDITION, or in Canada, 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), as well as local codes and ordinances and
must be done by a qualified professional. 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 BTUs being
supplied.
IMPORTANT: The dryer and its individual shutoff 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 (3.5 kPa).
NOTE: The dryer must be isolated from the gas supply piping system by closing its individual manual
shutoff valve during any pressure test of the gas supply system at test pressures equal to or less
than 1/2 psig (3.5 kPa).
H. STEAM INFORMATION
It is your responsibility to have ALL plumbing connections made by a qualified professional to assure that the
steam plumbing 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 MLS-55 is manufactured with a pneumatic (piston) damper system, which requires an
external supply of air (80 PSI ± 10 PSI [5.52 bars ± 0.68 bars]).
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.
28
2. Steam Requirements - High Pressure
Inlet ---------- 1-inch supply line connection ----- qty. one (1) at top manifold.
Return ------- 1-inch return line connection ----- qty. one (1) at top manifold.
OPERATING STEAM PRESSURE
Maximum
125 psig
861.9 kPa
Minimum
100 psig*
689.5 kPa
Heat Input ( Normal
Load)
4.2 Bhp
Consumption
( Approximate)
144.7
lbs/hr
65.7 kg/hr
Shaded areas are stated in metric equivalents
* Minimum operating temperature for optimum results.
3. Installation Instructions
To insure an adequate supply of steam is provided, be sure that the steam lines and steam return lines are
sized and laid out as stipulated in this manual. Inadequate steam lines and steam return lines or improper
steam plumbing will result in poor performance and can cause component failure. Clean, dry steam must
be provided to the dryer.
IMPORTANT: Steam coil failure due to water hammer by wet steam will VOID THE WARRANTY.
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 line must be made
with a minimum 10-inch (25.4 cm) riser. This will prevent any condensate from draining towards the
dryer.
b. The steam supply piping to the dryer must include a 12-inch (30.48 cm) 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. Shutoff valves for each dryer should be installed in the supply line, return line, and drip trap return line.
This will allow the dryer to be isolated from the supply main and the return main if the dryer needs
maintenance work.
e. Install an inverted bucket steam trap and check valve at least 12-inches (30.48 cm) below the steam coil
as close to the coil as possible.
1) A trap with capacity of 400 pounds of condensate per hour (181.5 kg/hr) at 125 PSI (8.6 bars) is
needed for each unit.
f. The supply line and the return line should be insulated. This will save energy and provide for the safety
of the operator and maintenance personnel.
29
g. Water pockets in the supply line, caused by low points, will provide wet steam to the coil possibly causing
steam coil damage. ALL horizontal runs of steam supply piping should be pitched 1/4-inch (6.35 mm)
for every 1 foot (0.30 meters) back towards the steam supply header causing the condensate in the line
to drain to the header. Install a bypass trap in any low point to eliminate wet steam.
IMPORTANT: Flexible hose/coupling must be used. Coil failure due to hard plumbing connections
will VOID THE WARRANTY.
30
4. Steam Damper Air System Connections
The MLS-55 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 in front of the electric service relay box.
a. Air Requirements
COM P RESSED A IR S UPP LY
A IR P RESSURE
Normal
80 PSI
5.52 bars
Minimum Supply
70 PSI
4.83 bars
Maximum Supply
90 PSI
6.21 bars
Shaded areas are stated in metric equivalents
b. Air Connection
Air connection to system -- 1/8-inch N.P.T.
c. No air regulator or filtration is provided with the dryer. External regulation/filtration of 80 PSI (5.52
bars) must be 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.
31
5. Steam System Operation
The MLS-55 steam damper shown in Diagram 1 in the illustration below, 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 2).
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 steam damper is in cool down mode as shown in
Diagram 2.
32
6. Steam Damper Air Piston (Flow Control) Operation Adjustment
Although the steam damper operation was tested and adjusted prior to shipping at 80 PSI (5.52 bars), steam
damper operation must be checked before the dryer is put into operation. Refer to the previous page for
instructions to check steam damper operation. If steam damper adjustment is necessary, locate the flow
control valve and make the necessary adjustments as noted below.
33
I. PREPARATION FOR OPERATION/START-UP
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 affixed to
the backside of the upper control door. In the 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 and ELECTRIC 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. (Refer to page 36 for Sail Switch Adjustment).
5. GAS MODELS - be sure that ALL gas shutoff valves are in the open position.
6. Be sure ALL side and base panels are on the dryer.
7. Check ALL service doors to insure that they are closed and secure.
8. Be sure the lint door is securely in place.
9. Rotate the basket (tumbler/drum) 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 [5.52 bars]) is connected to the dryers.
12. STEAM MODELS - check to insure ALL steam shutoff valves are open.
13. STEAM MODELS - check steam damper operation.
14. Check basket (tumbler) bearing setscrews to insure they are ALL tight.
34
J. PREOPERATIONAL TESTS
ALL dryers are thoroughly tested and inspected before leaving the factory. However, a preoperational test
should be 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.
a. Open ALL shutoff valves (gas and steam models only).
2. Refer to the Operating Instructions for starting your particular model dryer.
3. Gas Dryers
a. When a gas dryer is first started (during initial start-up), it has a tendency not to ignite on the first ignition
attempt. This is because the gas supply piping is filled with air, so it may take a few minutes for the air
to be purged from the lines.
NOTE: During the purging period, check to be sure that ALL gas shutoff valves are open.
NOTE: Gas dryers are equipped with a Hot Surface Ignition (HSI) system which has internal
diagnostics. If ignition is not established within three (3) times, the heat circuit in the HSI
module will lockout until it is manually reset. To reset the HSI system, open and close the main
door and restart the dryer.
b. A gas pressure test should be taken at the gas valve pressure tap of each dryer to assure that the water
column (W.C.) pressure is correct and consistent.
NOTE: Water column pressure requirements (measured at the pressure tap of the gas valve body):
Natural Gas ------------------ 3.5 Inches (8.7 mb) Water Column.
Liquid Propane (L.P.) Gas --- 10.5 Inches (26.1 mb) Water Column.
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.
4. Steam Dryers
a. Check to insure that steam damper is functioning properly...
1) 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
exist refer to air adjustment instructions in Section H.
35
5. Electrically Heated Dryers
a. Check to insure that electric oven/contactor assembly is activating.
6. Make a complete operational check of ALL safety related circuits:
a. Door switch(es)
b. Hi-Limit thermostats
c. Sail switch (for gas and electric models only)
NOTE: To check for proper sail switch operation (for gas and electric models only), 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 the heat system is activated, the sail switch is
improperly adjusted and must be adjusted by bending the actuator arm of the sail switch
toward the burner box. If the actuator arm is bent too far toward the burner box of the dryer,
the dryer may not have heat when needed. After any adjustment to the sail switch, the above
procedure must be repeated to verify proper operation of the sail switch.
7. The dryer should be operated through one (1) complete cycle to assure that no further adjustments are
necessary and that ALL components are functioning properly.
BASKET COATING
The basket (tumbler) is treated with a protective coating. We suggest dampening old garments or cloth
material with a solution of water and nonflammable mild detergent and tumbling them in the basket (tumbler) to
remove this coating.
8. Make a complete operational check of ALL operating controls.
a. For microprocessor models check 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.
9. Check the electric service phase sequence (3-phase [3ø] models only). While the dryer is operating, check
to see if the blower wheel (impellor/fan) is rotating in the proper direction. Looking from the front, the
blower wheel (impellor/fan) should spin in the clockwise (CW) direction. If it is, the phasing is correct. If
the phasing is incorrect, reverse two (2) of the three (3) leads at connections L1, L2, L3 of the power supply
to the dryer.
IMPORTANT: If the blower wheel (impellor/fan) is rotating in the wrong direction, this will not only
drastically reduce drying efficiency, but it can also cause premature component failure.
36
10. Reversing Models Only - basket (tumbler) dryer should never be operated with less than a 30 lb. (14 kg)
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 Models
1) Spin and stop are not adjustable in the Automatic Mode and have been preprogrammed into the
microprocessor controller (computer) for 150-seconds spin time in the forward direction, 120-seconds
in the reverse direction and a 5-second dwell (stop) time.
2) Spin and stop times are adjustable in the Manual (timed) Mode.
b. Dual Timer Models
1) Both dwell (stop) time and the basket (tumbler) spin time are adjustable. (Refer to the illustration
on page 47.)
11. Check to insure that ALL setscrews (i.e., basket [tumbler] drive, idler, etc.) are tight.
K. PREOPERATIONAL INSTRUCTIONS
1. To start the dryer...
a. Microprocessor Controller (Computer) Dryers
1) The light emitting diode (L.E.D.) display will read "REAdY."
2) Press the "E" on the keyboard (touch pad).
3) The dryer will start and the display will flash "dRYING MANUAL CYCLE E" "dRY TEMP 180F"
"COOL TEMP 80F" "30 REMAIN" "dRUM TEMP."
Refer to the User's Manual for detailed operating instructions.
b. Dual Timer Dryers
1) Turn drying timer knob for a time of 20 minutes.
2) Select "High Temp."
3) Push "Push To Start" Switch.
4) To stop dryer, open the main door.
37
2. To stop the dryer...
a. Microprocessor Controller (Computer) Dryer...
1) Press the CLEAR/STOP (red) button on the keyboard (touch pad).
2) Open the main door.
b. Dual Timer Dryers
1) Open the main door.
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. Discontinue the heat supply:
a. GAS MODELS ... discontinue the gas supply.
1) SHUT OFF external gas supply shutoff valve.
2) SHUT OFF internal gas supply shutoff valve located in the gas valve burner area.
b STEAM MODELS ... discontinue the steam supply.
1) SHUT OFF external (location furnished) shutoff valve.
2) SHUT OFF internal steam valves in the supply lines and the return lines.
38
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 reseller from whom the ADC equipment was purchased. If the reseller cannot be
contacted or is unknown, contact the ADC Service Department for a reseller 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 reseller from whom the ADC equipment was purchased.
If the reseller cannot be contacted or is unknown, contact the ADC Parts Department for a reseller in your
area. Parts may also be purchased directly from the factory by calling the ADC Parts Department at (508)
678-9000 or you may FAX in your order at (508) 678-9447.
NOTE: When ordering replacement parts from the ADC reseller 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.
39
SECTION V
WARRANTY INFORMATION
A. RETURNING WARRANTY CARD(S)
1. Before any dryer leaves the ADC factory test area, a warranty card 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, if you file a warranty claim.
a. If a Warranty Card 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 reseller from
whom you purchased the equipment and request a dryer warranty form. If the reseller 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 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 PART(S)
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"
[R.M.A.]) from the factory.
NOTE: An R.M.A. is valid for only thirty (30) days from date of issue.
a. The R.M.A. issued by the factory, as well as any other correspondence pertaining to the returned parts,
must be included inside the package with the failed merchandise.
40
2. Each part must be tagged with the following information:
a. Model number and serial number of 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" returns will 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.
41
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 ductwork 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 airflow. 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.
SUGGESTED CLEANING SCHEDULE
EVERY SECOND or THIRD LOAD
Clean the lint screen every second or third load. A clogged lint screen will cause poor dryer performance. The
lint screen is located behind the lint door in the base of the dryer. Open the lint door, brush the lint off the lint
screen, and remove the lint. Inspect lint screen and replace if torn.
NOTE: The frequency of cleaning the lint screen can best be determined from experience at each
location.
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.
STEAM MODELS - 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 house.
42
90 DAYS
1. Remove lint from around basket (tumbler), drive motors, and surrounding areas.
2. Remove lint from gas valve burner area with a dusting brush or vacuum cleaner attachment.
3. Clean any lint accumulation in and around both the blower and drive motor casing openings.
NOTE: To prevent damage, avoid cleaning and/or touching ignitor/flame-probe assembly.
EVERY 6 MONTHS
Inspect and remove lint accumulation in customer furnished exhaust ductwork system and from dryers internal
exhaust ducting.
NOTE: THE ACCUMULATION OF LINT IN THE EXHAUST DUCTWORK CAN
CREATE A POTENTIAL FIRE HAZARD.
NOTE: DO NOT OBSTRUCT THE FLOW OF COMBUSTION and VENTILATION AIR.
CHECK CUSTOMER FURNISHED BACK DRAFT DAMPERS IN THE EXHAUST
DUCTWORK. INSPECT and REMOVE ANY LINT ACCUMULATION, WHICH CAN
CAUSE THE DAMPER TO BIND or STICK.
NOTE: A back draft damper that is sticking partially closed can result in slow drying and shutdown of
heat circuit safety switches or thermostats.
NOTE: When cleaning the dryer cabinet(s), avoid using harsh abrasives. A product intended for the
cleaning of appliances is recommended.
B. ADJUSTMENTS
7 DAYS AFTER INSTALLATION and EVERY 6 MONTHS THEREAFTER
Inspect bolts, nuts, screws, (bearing setscrews), and non-permanent gas connections (unions, shutoff 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 switches, lint drawer switch, sail switch, burner
and hi-limit thermostats).
C. LUBRICATION
The fan shaft bearings should be lubricated every three (3) months. Use Shell Alvania grease NLGI grade 2 or
its equivalent. Generically, this grease would be described as an NLGI grade 2 multipurpose industrial grease
with a lithium thickener and mineral base oil. Lubrication is necessary. The motor bearings...and under normal/
most conditions the basket (tumbler) bearings are permanently lubricated. It is physically possible to re-lubricate
the basket (tumbler) bearings if you choose to do so even though this practice may not be necessary. Use Shell
Alvania grease NLGI grade 2 or its equivalent. Generically, this grease would be described as an NLGI grade 2
multipurpose industrial grease with a lithium thickener and mineral base oil. The basket (tumbler) bearings used
in the dryer DO NOT have a grease fitting. Provisions are made in the bearings housing for the addition of
grease fitting which can be obtained elsewhere.
43
SECTION VII
PROCEDURE FOR FUNCTIONAL CHECK
OF REPLACEMENT COMPONENTS
1. Microprocessor Controller (Computer) Board
a. Upon completing installation of the replacement microprocessor controller (computer) board, reestablish
power to the dryer.
b. Start the drying cycle by pressing any of the preset cycles in letters A-F.
c. Verify that the motor(s) and the heat indicator dots, in the microprocessor controller (computer) light
emitting diode (L.E.D.) display are on. (Refer to the illustration below.)
1.
2.
3.
4.
Basket (tumbler) in Forward Mode (clockwise [CW]).
Basket (tumbler) in Reverse Mode (counterclockwise [CCW]) indicator (for reversing models only).
Heat on indicator.
On indicator (dryer is in operation mode).
44
Verify that the motor(s) heat and door indicator lights on the back side of the microprocessor controller
(computer) board are lit. (Refer to the illustration below.)
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
"FAN" (Blower) light emitting diode (L.E.D.) indicator
"FOR" (Forward) output L.E.D. indicator (for optional Reversing Models Only)
"Rev" (Reverse) output L.E.D. indicator (for optional Reversing Models Only)
"HT 1" (Heat) output L.E.D. indicator
"Fuse" (Main Fuse) input L.E.D. indicator
"Lint" (Lint Door) input L.E.D. indicator
"Main" (Main Door) input L.E.D. indicator
"Drum" (Basket [Tumbler] Hi-Limit) input L.E.D. indicator
"Sail" (Sail Switch) input L.E.D. indicator
"Burn" (Burner Hi-Limit) input L.E.D. indicator
"Flame" (Burner Control Failure) input L.E.D. indicator
"Power Supply" L.E.D. input indicator
45
d. Open main door. The dryer must stop and ALL output indicator lights on the back side of the
microprocessor controller (computer) board must go out. (Refer to the illustration on the previous
page.)
e. Try to restart the dryer with the main door open.
f. The microprocessor controller (computer) board's light emitting diode (L.E.D.) display must read "DOOR."
g. Close the main door and restart the dryer.
h. Functional check of microprocessor controller (computer) board is complete.
2. Hot Surface Ignition (HSI) System
a. Upon completing installation of the
replacement HSI module, reestablish power
to the dryer.
b. The HSI module's "red" indicator light will
light up for approximately 5-seconds (self
check routine).
If the HSI module's "red" indicator light stays
on or flashes continuously, then the HSI
module is wired incorrectly or has failed.
c. Start the drying cycle.
d. The Hot Surface Ignitor will turn on. After approximately 4-seconds the hot surface ignitor will shut off
and the gas valve will be energized. The flame should now be established.
e. With the burner flame on, remove the flame sensor wire from the S2 terminal of the HSI module. The
burner flame must shut off immediately.
f. Stop the drying cycle, with the flame sensor wire still removed, restart the drying cycle.
g. The Hot Surface Ignitor will turn on and after approximately 4-seconds the hot surface ignitor will shut
off. The gas valve will be energized and a burner flame should be evident for approximately 7-seconds
and then shut off.
h. The HSI module will attempt two (2) additional ignition trials after which the HSI module will lockout and
the "red" indicator light will flash continuously.
i. Functional check of the HSI module is complete.
1) Replace the flame sensor wire from the S2 terminal to the HSI module.
46
SECTION VIII
REVERSING TIMER SPIN/DWELL ADJUSTMENTS
Dual timer models with "reversing option" have an electric reversing timer in the electric service box which is
located in the upper 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
Adjustment Position Number
1
2
3
4
5
Time in Seconds*
30
60
90
120
150
Adjustment Position Number
1
2
3
4
5
Time in Seconds*
5
6.3
7.6
8.9
10.2
DWELL (Stop) TIME
* Values shown are +/- 1 second.
47
SECTION IX
DATA LABEL INFORMATION
A. DATA LABEL
Contact American Dryer Corporation
When contacting American Dryer Corporation certain information is required to insure proper service/parts
information from American Dryer Corporation. This information is on the data label located on the backside
of the upper control door. When contacting American Dryer Corporation please have the model number and
serial number available.
48
THE DATA LABEL
1. MODEL NUMBER
The model number is an ADC number, which describes the size of the dryer and the
type of heat (gas, electric, or steam).
2. SERIAL NUMBER
The serial number allows ADC to gather information on your particular dryer.
3. MANUFACTURING CODE NUMBER
The manufacturing code number is a number issued by ADC, which describes ALL
possible options on your particular model.
4. TYPE OF HEAT
This describes the type of heat for your particular dryer: gas (natural gas) or steam.
5. HEAT INPUT (for GAS DRYERS)
This describes the heat input in British Thermal Units per Hour (BTUH).
6. ORIFICE SIZE (for GAS DRYERS)
Gives the number drill size used.
7. ELECTRIC SERVICE
This describes the electric service for your particular model.
8. GAS MANIFOLD PRESSURE (for GAS DRYERS)
This describes the manifold pressure taken at the gas valve tap.
9. APPLICABLE APPROVAL SEAL(S)
I.e., Canadian Standards Association International.
49
SECTION X
BURNER and BASKET (TUMBLER)/LINT CHAMBER
MANUAL RESET HI-LIMIT INSTRUCTIONS
I M P O R TA N T
MANUAL RESET HI-LIMIT INSTRUCTIONS
FOR PHASE 6 MODELS
(GAS MODELS ONLY)
This dryer was manufactured with a burner manual reset hi-limit and basket (tumbler)/lint chamber hi-limit
thermostat which is monitored by the Phase 6 computer. If either manual reset thermostat is open prior to start
of the drying cycle, the dryer will start momentarily and then shut down, the Phase 6 computer will display an
error code with an audio indication. If the basket (tumbler)/lint chamber hi-limit thermostat is open, the display
will read “dRUM SAFETY FAIL.” If the burner hi-limit thermostat is open, the display will read “bURNER
SAFETY FAIL.”
If either manual reset hi-limit thermostat opens during a drying cycle, the display will show the applicable error
code described above along with an audio indication. If the drum temperature is above 100º F (38º C), the dryer
will continue to run with no heat for 3 minutes or until the drum temperature has flattened below 100º F (38º C).
The CLEAR/STOP button on the Phase 6 keyboard (touch pad) must be pressed to clear the error condition.
The open manual reset hi-limit thermostat must be reset “manually” prior to the start of the next cycle.
This hi-temperature condition may be caused due to a restricted exhaust, poor airflow, or improper burner operation.
The location of the burner hi-limit is on the right side of the burner box and the basket (tumbler) hi-limit is located
in the lint chamber area.
WARNING: Discontinue power to dryer before attempting to reset hi-limit.
IMPORTANT
This dryer is equipped with a burner
hi-limit and tumbler/lint chamber hi-limit
thermostat which must be reset manually.
WARNING: Discontinue power to dryer
before attempting to reset hi-limit.
ADC P/N: 114093
50
I M P O RTA N T
MANUAL RESET HI-LIMIT INSTRUCTIONS
FOR PHASE 6 MODELS
(ELECTRIC OR STEAM MODELS ONLY)
This dryer was manufactured with a manual reset basket (tumbler)/lint chamber hi-limit thermostat which is
monitored by the Phase 6 computer. If the manual reset thermostat is open prior to start of the drying cycle, the
dryer will start momentarily and then shut down, displaying “dRUM SAFETY FAIL” with an audio indication.
If the manual reset hi-limit thermostat opens during a drying cycle, the display will read “dRUM SAFETY FAIL”
with an audio indication. If the drum temperature is above 100º F (38º C), the dryer will continue to run with no
heat for 3 minutes or until the drum temperature has flattened below 100º F (38º C). The CLEAR/STOP button
on the Phase 6 keyboard (touch pad) must be pressed to clear this “dRUM SAFETY FAIL” condition. The
open manual reset hi-limit thermostat must be reset “manually” prior to the start of the next cycle.
This hi-temperature condition may be caused due to a restricted exhaust, poor airflow, or improper burner operation.
The basket (tumbler) manual reset hi-limit is locked in the chamber area.
WARNING: Discontinue power to dryer before attempting to reset hi-limit.
IMPORTANT
This dryer is equipped with a lint
chamber hi-limit thermostat which must
be reset manually.
WARNING: Discontinue power to dryer
before attempting to reset hi-limit.
ADC P/N: 114501
51
ADC 113000
9-11/23/05-0