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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

ML-55II Installation Manual

Phase 7, Non-Coin

ADC

 Part No. 113345

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.

— Do not store or use gasoline or other flam-

mable vapors and liquids in the vicinity of

this or any other appliance.

What To 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.

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.

— Ne pas entreposer ni utiliser d’essence ni

d’autres vapeurs ou liquides inflammables

à proximité de cet appareil ou de tout autre

appareil.

Que Faire Si Vous Sentez Une

Odeur De Gaz

• Ne pas tenter d’allumer d’appareils.

• Ne touchez à aucun interrupteur.  Ne

pas vous servir des téléphones se

trouvant dans le bâtiment.

• 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.

Summary of Contents for ML-55 Phase 7

Page 1: ...plier call the fire department Installation and service must be performed by a qualified installer service agency or the gas supplier 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 Ne pas entreposer ni utiliser d essence ni d autres vapeur...

Page 2: ...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 Retain T...

Page 3: ...rve all safety precautions displayed on the equipment and or specified in the installation manual included with the dryer Dryer must be installed in a location environment which the ambient temperature remains between 40 F 4 44 C and 130 F 54 44 C Caution Label all wires prior to disconnection when servicing controls Wiring errors can cause improper operation Attention Au moment de l entretien des...

Page 4: ...m experience at each location Warning The collection of lint in the burner area and exhaust ductwork can create a potential fire hazard 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 elec...

Page 5: ...AIR VOLUME 0 75 cfh 0 02 cmh BOILER HP NORMAL LOAD 4 2 Bhp SUPPLY CONNECTION 1 F N P T RETURN CONNECTION 1 F N P T Specifications _________________________ Shaded areas are stated in metric equivalents 12 01 04 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 ...

Page 6: ... 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 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 Im...

Page 7: ...erials 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 t...

Page 8: ..._______ 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 mo...

Page 9: ... 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 as 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 angl...

Page 10: ...ections must be made by a properly licensed and competent electrician This is to ensure that the electrical installation is adequate and conforms to local and state regulations or codes In the absence of such codes all electrical connections materials and workmanship must conform to the applicable requirements of the National Electrical Code ANSI NFPA NO 70 LATEST EDITION or in Canada the Canadian...

Page 11: ...ng 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 co...

Page 12: ...copper lug also provided in this box To gain access the service box cover must be removed The neutral will only be used on 4 wire service This is typical for 380 416V 50 Hz 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 ...

Page 13: ...e 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 ty...

Page 14: ...re exceeds 12 0 inches 29 9 mb of water column pressure W C 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 upst...

Page 15: ...m riser along with a drip trap and check valve This will prevent any condensate from entering the steam coil 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 Shutoff valves for each dryer should be installed in the supply line return line and drip trap retu...

Page 16: ...ed in metric equivalents Air Connection Air connection to system 1 8 N P T No air regulator or filtration is provided with the dryer External regulation filtration of 80 psi 5 52 bar 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 ensure that correct and clean air pressure is achiev...

Page 17: ... module will lock out until it is manually reset To reset the ignition system open and close the main door and restart the dryer A gas pressure test should be taken at the gas valve pressure tap of each dryer to ensure 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...

Page 18: ...ion and start drying The dryer will then start I E blower basket tumbler and heat The L E D display will read MANUAL DRYING CYCLE D 00 00 MIN REMAIN Note Press and hold the Up Arrow to view the basket tumbler temperature at any time The dryer can be stopped at any time by pressing the Stop Clear O key at this time the dryer will go into a cycle pause If the Stop Clear O key is pressed again at thi...

Page 19: ...7 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 Returning Warranty Parts______________ All dryer or parts warranty claims or inquiries should be addressed to the ADC Warranty Parts Department To expedite processing the following procedur...

Page 20: ...ing supply house 90 Days Remove lint from around basket tumbler drive motors and surrounding areas Remove lint from gas valve burner area with a dusting brush or vacuum cleaner attachment 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 ...

Page 21: ...e retries trials If the flame is not sensed at the end of the third retry trial inter purge period of 30 seconds the DSI module will Lock Out light emitting diode L E D diagnostic indicator flashes A steady L E D indicator indicates normal operation No L E D indicator indicates a power or an internal failure has occurred For Models with Fenwal Controls DSI Module 128937 _______________________ The...

Page 22: ...et manually 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 looking at the burner from the back of the dryer Warning Discontinue power to dryer before attempting to reset Hi Limit DATA LABEL INFORMATION ______ When contacting American Dryer Corporation certai...

Page 23: ...onfused with 3 4 N P T The sealing of an NH connection is made with a washer opposed to the mating threads of an N P T assembly The two 2 thread designs are not compatible Important Flexible supply line coupling must be used Solenoid valve failure due to hard plumbing connections will void warranty It is recommended that a filter or strainer be installed in the water supply line FIRE SUPPRESSION S...

Page 24: ..._ While the dryer is in an idle state or 20 seconds after the heat turns off the Phase 7 control monitors the thermistor probe located in the top of the basket tumbler chamber and records the minimum temperature If the minimum recorded thermistor probe temperature is greater than 120 F 48 C and the control detects a 50 rise in temperature this will be the trip point and the F S S routine will acti...

Page 25: ... section F S S Diagnostics Messages __________ Open Thermistor Probe This message indicates that the F S S thermistor probe either is not connected or is damaged If this condition is detected the Phase 7 non coin control will immediately enter F S S DISABLED mode Shorted Thermistor Probe This message indicates that the F S S thermistor probe is damaged or the wiring is shorted If this condition is...

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