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

ADCPartNo.113000
For replacement parts, contact the reseller from which the dryer
was purchased or
AmericanDryerCorporation
88CurrantRoad
FallRiverMA02720-4781
Telephone:[phone] / Fax:[phone]
e-mail:[e-mail]
www.amdry.com
WARNING: Foryoursafetythe
informationinthismanualmustbe
followedtominimizetheriskoffireor
explosionorto prevent property damage,
personalinjury ordeath.
Donot store or usegasolineorother flammable
vaporandliquidsinthevicinityofthisorany
otherappliance.
WHAT DOYOU DO IFYOU SMELL GAS
* Donot trytolightany appliance.
* Donottouch any electricalswitch;donotuse
anyphoneinyourbuilding.
* Clearthe room, buildingorareaof all
occupants.
* Immediatelycallyourgassupplierfroma
neighbor'sphone. Follow the gassupplier's
instructions.
* Ifyou cannot reachyourgas supplier, callthe
firedepartment.
Installationand servicemustbeperformed bya
qualifiedinstaller,serviceagencyorthegas
supplier.
AVERTISSEMENT: Assurez-vous debien
suivreles instructionsdonnées danscette
noticepourréduireauminimum lerisque
d’incendieou d’explosionoupour évitertout
dommagematériel, touteblessureou lamort.
Nepasentreposer niutiliser d’essence ni
d’autresvapeursouliquidesinflammablesdans
levoisinage decetappareiloudetoutautre
appareil.
QUEFAIRE SI VOUS SENTEZ UNEODEUR
DEGAZ:
* Nepastenter d’allumer d’appareil.
* Netouchezàaucuninterrupteur. Nepas
vousservirdes téléphones se trouvantdans
lebâtimentoùvousvoustrouvez.
* Évacuezla pièce,lebâtimentou lazone.
* Appelezimmédiatementvotrefournisseurde
gazdepuisunvoisin. Suivezlesinstructions
dufournisseur.
* Sivousnepouvez rejoindrelefournisseur
degaz,appelez le servicedesincendies.
L’installationetl’entretiendoivent êtreassurés
paruninstallateurouunservice d’entretien
qualifiéouparle fournisseurdegaz.
ML-55HS
Installation Manual
(Gas/Electric/Steam)

Retain This Manual In ASafe 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.
ML-55HS
FORYOURSAFETY
Donotstore or use gasoline or
otherflammablevaporsor
liquidsinthevicinityofthisor
anyother appliance.
POURVOTRESÉCURITÉ
Nepasentreposer ni utiliser d’essence
nid’autresvapeursou liquides
inflammablesdanslevoisinagedecet
appareiloude 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 OFPURCHASE ____________________________ MODELNO. __________________________________________
RESELLER’SNAME _______________________________________________________________________________________
Serial Number(s) ________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Replacement parts can be obtained from your reseller or the ADCfactory. Whenorderingreplacement parts from the factory,
you can FAX your order to ADC at [phone] or telephone your order directly to the ADC Parts Department at
[phone]. Please specify thedryermodelnumberand serialnumberinaddition tothedescriptionandpartnumber,so
that your order is processed accurately and promptly.
“IMPORTANTNOTETOPURCHASER”
Informationmustbeobtainedfromyourlocalgassupplierontheinstructions
tobe followed if theusersmellsgas. These instructions mustbepostedina
prominentlocationnearthedryer.

CHILDRENSHOULDNOTBEALLOWEDTOPLAYONORNEARTHEDRYERS.
WARNING
CHILDRENSHOULDBESUPERVISEDIFNEARDRYERSINOPERATION.
DRYERSSHOULDNEVERBELEFTUNATTENDEDWHILEINOPERATION.
CAUTION
FORYOURSAFETY
DONOTDRYMOPHEADSINTHE DRYER.
DONOTUSEDRYERINTHEPRESENCEOFDRYCLEANINGFUMES.
“Caution: Label all wires prior to
disconnection when servicing controls.Wiring
errors can cause improper operation.”
«Attention: Lordes opérationsd’entretien
des commandes étiqueter tous fils avant
de les déconnecter. Toute erreur de
câblage peut étre une source de danger et
depanne.»
WARNING
UNDER NO CIRCUMSTANCESshouldthedryerdoorswitches, lint doorswitch, heat
safety circuit ever be disabled.
IMPORTANT
YOUMUSTDISCONNECTandLOCKOUTTHEELECTRICSUPPLYandTHEGAS
SUPPLYBEFOREANYCOVERSorGUARDSAREREMOVEDFROMTHEMACHINE
TOALLOWACCESS FORCLEANING,ADJUSTING,INSTALLATION,orTESTING
OF ANY EQUIPMENT per OSHA (Occupational Safety and Health Administration)
STANDARDS.

WARNING
The dryer must never be operated with any of the back guards, outer tops, or service
panelsremoved. PERSONALINJURYorFIRECOULDRESULT.
IMPORTANT
PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or
specified in the installation manual included with the dryer.
Dryersmust not beinstalled 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.
DRYERMUSTNEVERBEOPERATEDWITHOUTTHELINTFILTER(SCREEN)IN
PLACE,EVENIFANEXTERNALLINTCOLLECTIONSYSTEMISUSED.
WARNING

Table of Contents
SECTION I
IMPORTANT INFORMATION............................................................................... 3
A. ReceivingandHandling ............................................................................................................... 3
B. SafetyPrecaution ........................................................................................................................ 4
SECTION II
SPECIFICATIONS/COMPONENT IDENTIFICATION ....................................6
A. Specifications.............................................................................................................................. 6
B. ComponentIdentification............................................................................................................. 8
SECTION III
INSTALLATION PROCEDURES .........................................................................10
A. LocationRequirements.............................................................................................................. 10
B. Unpacking/SettingUp ............................................................................................................... 11
C. DryerEnclosureRequirements .................................................................................................. 12
D. FreshAir Requirements ............................................................................................................. 13
E. ExhaustRequirements................................................................................................................ 14
F. ElectricalInformation ................................................................................................................ 18
G. GasInformation......................................................................................................................... 25
H. SteamInformation..................................................................................................................... 28
I. PreparationFor Operation/Start-Up .......................................................................................... 34
J. PreoperationalTests ................................................................................................................... 35
K.Preoperational Instructions ......................................................................................................... 37
L. ShutDown Instructions.............................................................................................................. 38
SECTION IV
SERVICE/PARTS INFORMATION......................................................................39
A.Service ...................................................................................................................................... 39
B. Parts .......................................................................................................................................... 39
SECTION V
WARRANTY INFORMATION ..............................................................................40
A. ReturningWarrantyCard(s) ...................................................................................................... 40
B. Warranty................................................................................................................................... 40
C. ReturningWarranty 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. DataLabel................................................................................................................................ 48
SECTION X
BURNER and BASKET (TUMBLER)/LINT CHAMBER MANUAL RESET
HI-LIMIT INSTRUCTIONS...................................................................................50
Gas ................................................................................................................................................ 50
Electricor Steam ............................................................................................................................ 51

3
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 theADC Traffic Manager at [phone].
IMPORTANT:The basket (tumbler) section of the dryer must be transported and handled in an
upright position at ALLtimes.

4
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 ALLoccupants.
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.

5
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 FOLLOWALLCAUTIONandDIRECTIONLABELSATTACHEDTOTHEDRYER.
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.

6
SECTION II
SPECIFICATIONS/COMPONENT IDENTIFICATION
A. SPECIFICATIONS
NOTE:ADCreserves the right to make changes in specifications at any time without notice or
obligation.
IMPORTANT:Steam dryers must be provided with clean, dry, regulated 80 PSI ± 10 PSI
(5.52 bars ± 0.68 bars) air supply.
AMPS
WITHOUT HEAT RECLAIMER
WITH
HEAT RECLAIMER
MAXIMUM CAPACITY (DRY WEIGHT) 55 lbs 25 kg
BASKET (TUMBLER) DIAMETER 37" 94 cm
BASKET (TUMBLER) DEPTH 30" 76.2 cm
BASKET (TUMBLER) VOLUME 18.67 cu. ft. 0.528 cu. m.
MOTOR (HORSEPOWER) 3/4 HP 0.56 kw
DOOR OPENING 31-3/8" 79.7 cm
APPROX. WEIGHT (UNCRATED) 585 lbs 265 kg 630 lbs 286 kg
APPROX. WEIGHT (CRATED) 645 lbs 293 kg 690 lbs 313 kg
GAS
AIRFLOW 600 cfm 17 cmm 375 cfm 10.6 cmm
HEAT INPUT 160,000 btu/hr 40,320 kcal/hr 140,000 btu/hr 35,280 kcal/hr
GAS INLET 1/2" 1/2"
VOLTAGE AVAILABLE 120 VOLTS OR230 VOLTS
ELECTRIC
AIRFLOW 600 cfm 17 cmm
OVEN SIZE APPLIED VOLTAGE/PHASE
Kw btu/hr kcal/hr 208/1ø 240/1ø 208/3ø 240/3ø 380/3ø 416/3ø 460/3ø
60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz
20 68,260 17,200 103 --- 90 --- --- --- --- --- --- 33 --- --- --- ---
24 81,910 20,640 --- --- --- --- 70 --- 62 62 --- --- --- 36 31 ---
30 102,390 25,800 --- --- --- --- 86 --- 75 75 --- --- --- 44 38 ---
STEAM*†
AIRFLOW 600 cfm 17 cmm
STEAM CONSUMPTION BOILER HP
NORMAL LOAD OPERATING STEAM PRESSURE STEAM SUPPLY STEAM RETURN
144.7 lb/hr 65.7 kg/hr 4.2 125 psi 8.6 bar 1" 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).