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American Dryer Corp. ML-122D Installation Manual

Gas & steam
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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 flammable
vapor and liquids in the vicinity of this or any
other appliance.
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.
020900RF/pb
ML-122D
(Gas & Steam)
Installation Manual
For replacement parts, contact the reseller from which the dryer
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 dans
le voisinage de cet appareil ou de tout autre
appareil.
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.
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. 113126

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  • Page 1 Installation and service must be performed by a qualified installer, service agency or the gas supplier. 020900RF/pb ML-122D (Gas & Steam) 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...
  • Page 2 Important For your convenience, log the following information: “IMPORTANT NOTE TO PURCHASER” POUR VOTRE SÉCURITÉ 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. ML-122D...

  • Page 3: For Your Safety

    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.
  • Page 4 WARNING The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJURY OR FIRE COULD RESULT. WARNING DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER/SCREEN IN PLACE, EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED. IMPORTANT PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment and/or specified in the installation manual included with the dryer.

  • Page 5: Table Of Contents

    Table of Contents SECTION I IMPORTANT INFORMATION ... 3 A. Receiving and Handling ... 3 B. Safety Precautions ... 4 SECTION II SPECIFICATIONS/COMPONENT IDENTIFICATION ... 6 A. Specifications (Gas and Steam) ... 6 B. Component Identification ... 8 SECTION III INSTALLATION PROCEDURES ...
  • Page 6 SECTION VI ROUTINE MAINTENANCE ... 40 A. Cleaning ... 40 B. Adjustments ... 42 C. Lubrication ... 42 SECTION VII REVERSING TIMER SPIN/DWELL ADJUSTMENTS... 43 SECTION VIII PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS ... 44 SECTION IX DATA LABEL INFORMATION ... 48 A.

  • Page 7: Important Information

    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.

  • Page 8: Safety Precautions

    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.
  • Page 9 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 rubberlike materials. Drying in a heated basket (tumbler) may damage plastics or rubber and may be a fire hazard.

  • Page 10: Specifications/Component Identification

    SPECIFICATIONS/COMPONENT IDENTIFICATION A. SPECIFICATIONS (GAS AND STEAM) MAXIMUM CAPACITY (DRY WEIGHT) BASKET (TUMBLER) DIAMETER BASKET (TUMBLER) DEPTH BASKET (TUMBLER) MOTOR BLOWER MOTOR DOOR OPENING (DIAMETER) BASKET (TUMBLER) VOLUME DRYERS PER 20’/40’ CONTAINER DRYERS PER 45’/48’ TRUCK VOLTAGE AVAILABLE HEAT INPUT APPROX.
  • Page 11 Specifications MLG-122 (Gas) MLS-122 (Steam) NOTE: ADC reserves the right to make changes in specifications at any time without notice or obligation.

  • Page 12: Component Identification

    B. COMPONENT IDENTIFICATION 1. Dryer Front View Illus. No. Description Microprocessor Control/Keyboard (Touch Pad) Panel Assembly (Controls) Control (Top Access) Door Assembly Main Door Assembly Lint Panel Assembly Lint Drawer Wire Diagram (Located Behind Control Door) Top Console (Module) Assembly...
  • Page 13 2. Dryer Rear View Illus. No. Description Electrical Service Connections Top Console Heating Unit Relay/Wiring Box Data Label and Installation Label Air Connection...

  • Page 14: Installation Procedures

    INSTALLATION PROCEDURES Installation should be performed by competent technicians in accordance with local and state codes. In the absence of these codes, the installation must conform to applicable American National Standards: ANSI Z223.1- LATEST EDITION (National Fuel Gas Code) 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 &...

  • Page 15: Unpacking/Setting Up

    10. The dryer must be installed with provisions for adequate combustion and make-up air supply. CAUTION: This dryer produces combustible lint and must be exhausted to the outdoors. Every 6 months, inspect the exhaust ducting and remove any lint build up. B.
  • Page 16 2. If more headroom is needed when moving dryer into position, the top console (module) may be removed. a. To Remove Top Console (Module) 1) Disconnect the ground wire (A) at the rear of dryer. 2) Remove the six (6) sets of nuts and washers (B) holding the console (module) to base. (Located within control boxes.) 3) Open control door and control panel then disconnect the following: a) On the right side box, disconnect the 4-pin plug as well as the 4-pin and 2-pin plug located on the...

  • Page 17: Dryer Enclosure Requirements

    C. DRYER ENCLOSURE REQUIREMENTS Even though a 30-inch (76.2 cm) clearance is acceptable, it is recommended that the rear of the dryer be positioned approximately 3 feet (0.91 meters) from nearest obstruction (i.e. wall) for ease of installation, maintenance, and service. Bulkheads and partitions should be made from noncombustible materials. The clearance between the bulkhead header and the dryer must be a minimum of 4-inches (10.2 cm) and must not extend more than 4-inches (10.2 cm) to the rear of the dryer front.

  • Page 18: Fresh Air Supply Requirements

    D. FRESH AIR SUPPLY 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.

  • Page 19: Exhaust Requirements

    NOTE: Component failure due to dry cleaning solvent fumes will VOID THE WARRANTY. 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, over heating of the dryer, and shutdown of the burner by the airflow (sail) switches, burner hi-limits, or basket (tumbler) hi-heat thermostats.
  • Page 20 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.
  • Page 21 IMPORTANT: Exhaust back pressure measured by a manometer at each basket (tumbler) exhaust duct area must be no less than 0 and must not exceed 0.3 inches (0.74 mb) of water column (W.C.). a. Ducting (Horizontal and Vertical) 1) For single dryer horizontal ducting the minimum duct size is 16-inches (40.64 cm) in diameter, the duct run should not have more than one (1) elbow (including outside protection), and must not exceed 40 feet (12.2 meters) in total length.
  • Page 22 b. Outside Ductwork Protection 1) To protect the outside end of the horizontal ductwork from the weather, a 90° elbow bent downward should be installed where the exhaust exits the building. If the exhaust ductwork travels vertically up through the roof, it should be protected from the weather by using a 180° turn to point the opening downward.
  • Page 23 IMPORTANT: Exhaust back pressure measured by a manometer at each dryer exhaust duct area must be no less than 0 and must not exceed 0.3 inches (0.74 mb) of water column (W.C.). The duct should be smooth inside with no projections from sheet metal screws or other obstructions, which will collect lint.

  • Page 24: Electrical Information

    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 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.
  • Page 25 2. Electrical Service Specifications ML-122 (Gas and Steam Only) ELECTRICAL SERVICE SPECIFICATIONS (PER DRYER) IMPORTANT: 208 VAC AND 240 VAC ARE NOT THE SAME. When ordering, specify exact voltage. NOTES: When fuses are used they must be dual element, time delay, current limiting, class RK1 or RK5 ONLY.
  • Page 26 3. Electrical Connections NOTE: A wire diagram is located in the front electrical control box for connection data. The only electrical input connections to the dryer are the 3-phase (3ø) power leads (L1, L2, and L3), GROUND, and in the case of 4 wire service, the neutral. Providing local codes permit, power connections to the dryer can be made by the use of flexible underwriters laboratory listed cord or pigtail (wire size must conform to rating of the dryer), or the dryer can be hard wired directly to the service breaker.

  • Page 27: Gas Information

    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 to 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...
  • Page 28 2. Technical Data a. Gas Specifications Manifold Pressure* 3.5 inches W.C. In-Line Pressure 6.0 - 12.0 inches W.C. Shaded areas are stated in metric equivalents b. Gas Connections: Inlet connection ----------------- 1-inch F.P.T. Inlet supply size ----------------- 1-inch F.P.T. (minimum) Btu/hr input (per dryer) -------- 415,000 (104,580 kcal/hr) 1) Natural Gas Regulation is controlled by the dryer’s gas valve’s internal regulator.
  • Page 29 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.
  • Page 30 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).

  • Page 31: Steam Information

    H. STEAM 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 to 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.
  • Page 32 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 12-inch (30.48 cm) riser. This will prevent any condensate from draining towards the dryer.
  • Page 33 4. Steam Damper Air System Connections The MLS-122 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 of the top console. a.
  • Page 34 6. Steam Damper Air Piston (Flow Control) Operation Adjustment Although the steam damper operation was tested and adjusted prior to shipping at 80 PSI (5.51 bars), steam damper operation must be checked before the dryer is put into operation. Refer to page 33 for instructions to check steam damper operation.

  • Page 35: Compressed Air

    I. COMPRESSED AIR The ML-122 is manufactured with a pneumatic Air Jet damper system, which requires an external supply of compressed air. The air connection is made at the rear of the top console. 1. Air Requirements COMPRESSED AIR SUPPLY Normal Minimum Supply Maximum Supply...

  • Page 36: Preoperational Tests

    8. Be sure the lint drawer is securely in place. NOTE: LINT DRAWER MUST BE CLOSED TO ACTIVATE THE SAFETY SWITCH OTHERWISE THE DRYER WILL NOT START. 9. Rotate the basket (tumbler/drum) by hand to be sure it moves freely. 10.
  • Page 37 NOTE: During the purging period, check to be sure that ALL gas shutoff valves are open. 3) Once ignition is established, 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 gas valve pressure tap)...
  • Page 38 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. Each dryer should be operated through one (1) complete cycle to assure that no further adjustments are necessary and that ALL components are functioning properly.

  • Page 39: Operating Instructions

    L. OPERATING INSTRUCTIONS NOTE: Before attempting to start the dryer the main door must be closed and the lint drawer securely in place. 1. To start the dryer: a. Microprocessor controller (computer) dryers... 1) Light emitting diode (L.E.D.) display will read “REAdY” (meaning no cycle in progress). 2) Press the letter on the keyboard (touch pad) corresponding to the cycle desired (i.e., key “E”)...

  • Page 40: Shut Down Instructions

    M. 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.

  • Page 41: Service/Parts Information

    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.

  • Page 42: Warranty Information

    WARRANTY INFORMATION A. RETURNING WARRANTY CARDS 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 should you file a warranty claim.
  • Page 43 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.

  • Page 44: Routine Maintenance

    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.
  • Page 45 STEAM DRYERS Clean the steam coil fins. Compressed air and a vacuum cleaner with brush attachment are suggested. NOTE: 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 any local air conditioning supply house. 90 DAYS Remove lint from around basket (tumbler), drive motors, and surrounding areas.

  • Page 46: Adjustments

    B. ADJUSTMENTS 7 DAYS AFTER INSTALLATION AND EVERY 6 MONTHS THEREAFTER Inspect bolts, nuts, screws, (bearing setscrews), grounding connections, and nonpermanent gas connections (i.e., unions, shutoff valves, and orifices). 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.

  • Page 47: Reversing Timer Spin/Dwell Adjustments

    REVERSING TIMER SPIN/DWELL ADJUSTMENTS Timer models have an electronic reversing timer in the electrical service box, which is located in the upper left rear area of the dryer. Both the dwell (stop) time and the basket (tumbler) spin time are adjustable by mode selection switches located on the electronic timer (as noted in the illustration below).

  • Page 48: Procedure For Functional Check Of Replacement

    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.
  • Page 49 d. 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.) “FAN” (Blower) output light emitting diode (L.E.D.) indicator “FOR” (Forward) output L.E.D. indicator “Rev”...
  • Page 50 e. Open main door. The dryer must stop and ALL indicator dots of the microprocessor controller (computer) light emitting diode (L.E.D.) display must go out. (Refer to the illustration on the previous page.) f. Try to restart the dryer with the main door open. g.
  • Page 51 3. For Direct Spark Ignition (DSI) System Models Manufactured With ADC Module Part No. 882627 a. Upon completing installation of the replacement DSI module, reestablish power to the dryer. b. Starting the drying cycle. c. The ignition DSI module’s light emitting diode (L.E.D.) indicator will light “red”...

  • Page 52: Data Label Information

    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 ADC. This information is on the data label that is affixed to the left side panel area behind the t o p c o n t r o l ( a c c e s s ) d o o r .
  • Page 53 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.

  • Page 54: Burner And Basket (Tumbler)/Lint Chamber Manual Reset Hi-Limit Instructions

    BURNER AND BASKET (TUMBLER)/LINT CHAMBER MANUAL RESET HI-LIMIT INSTRUCTIONS This dryer was manufactured with a burner manual reset hi-limit (gas models only) 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.
  • Page 55 ADC 113126 1 - 02/16/00-15 2 - 11/10/00-10 3 * 08/13/01-25...

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