American Dryer Corp. ML-78III Installation Manual
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American Dryer Corp. ML-78III Installation Manual

American Dryer Corp. ML-78III Installation Manual

Gas/dsi/phase 7 with f.s.s.
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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.
— Do not store or use gasoline or other flammable
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.
102301JEV/mcronan
ML-78III
(Gas/DSI/Phase 7 with F.S.S.)
For replacement parts, contact the reseller from which the dryer
Telephone: (508) 678-9000 / Fax: (508) 678-9447
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.
was purchased or
American Dryer Corporation
88 Currant Road
Fall River MA 02720-4781
e-mail: techsupport@amdry.com
www.amdry.com
ADC Part No. 113346

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Summary of Contents for American Dryer Corp. ML-78III

  • Page 1 — Installation and service must be performed by a qualified installer, service agency or the gas supplier. 102301JEV/mcronan ML-78III 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.
  • Page 2 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.

  • Page 3: For Your Safety

    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.
  • 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

    SECTION I IMPORTANT INFORMATION ... 3 A. Receiving and Handling ... 3 B. Safety Precautions ... 4 SECTION II SPECIFICATIONS/COMPONENT IDENTIFICATION ... 6 A. Specifications ... 6 B. Component Identification ... 8 SECTION III INSTALLATION PROCEDURES ... 10 A. Location Requirements ... 10 B.
  • Page 6 SECTION VII REVERSING TIMER SPIN/DWELL ADJUSTMENTS ... 35 SECTION VIII DATA LABEL INFORMATION ... 36 SECTION IX PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS ... 38 SECTION X MANUAL RESET HI-LIMIT INSTRUCTIONS ... 40 A. Phase 7 ... 40 B. Dual Timer ... 40 SECTION XI FIRE SUPPRESSION SYSTEM (F.S.S.) ...

  • 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 7. A program should be established for the inspection and cleaning of lint in the burner area, exhaust ductwork, and area around the back of 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.

  • Page 10: Specifications/Component Identification

    SPECIFICATIONS/COMPONENT IDENTIFICATION A. SPECIFICATIONS MAXIMUM CAPACITY (DRY WEIGHT) BASKET (TUMBLER) DIAMETER BASKET (TUMBLER) DEPTH BASKET (TUMBLER) VOLUME BASKET (TUMBLER) MOTOR DOOR OPENING (DIAMETER) F.S.S WATER CONNECTION DRYERS PER 20’/40’ CONTAINER DRYERS PER 48’/53’ TRUCK VOLTAGE AVAILABLE APPROX. NET WEIGHT APPROX. SHIPPING WEIGHT HEAT INPUT AIRFLOW INLET PIPE CONNECTION...

  • Page 11: Specifications

    Specifications 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 Controls Control (top access) Door Assembly Main Door Assembly Lint Compartment Area (lint screen located behind door) Data Label and Installation Label...
  • Page 13 2. Dryer Rear View Illus. No. Description Heating Unit Outer Top Area Electric Service Relay Box Basket (tumbler) Bearing Mount Assembly Idler Bearing Mount Assembly Basket (tumbler) (drive) Motor Assembly (for reversing models only) Blower Motor Assembly Dryer Exhaust Electrical service connections are made in this box.

  • 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

    CAUTION: This dryer produces combustible lint and must be exhausted to the outdoors. Every 6 months, inspect the exhaust ducting and remove any lint buildup. IMPORTANT: 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). B.

  • Page 16: Dryer Enclosure Requirements

    C. DRYER ENCLOSURE REQUIREMENTS Bulkheads and partitions must 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.

  • Page 17: 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 18: Exhaust Requirements

    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-limit thermostats.
  • Page 19 NOTE: As per the National Fuel Gas Code, “Exhaust ducts for Type 2 clothes dryers shall be constructed of sheet metal or other noncombustible material. Such ducts shall be equivalent in strength and corrosion resistance to ducts made of galvanized sheet steel not less than 0.0195-inches (26 gauge [0.05 mm]) thick.”...
  • Page 20 IMPORTANT: Minimum duct size for a dryer that is vented horizontally is 10-inches (25.4 cm) for a round duct or an equivalent of 80 square inches (516.3 square centimeters). THE DUCT SIZE MUST NOT BE REDUCED ANYWHERE DOWNSTREAM OF THE DRYER. IMPORTANT: Exhaust back pressure measured by a manometer in the exhaust duct must be no less than 0 and must not exceed 0.3 inches (0.74 mb) of water column.
  • Page 21 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 the horizontal ductwork from the weather, a 90°...

  • Page 22: Electrical Information

    F. ELECTRICAL INFORMATION 1. Electrical Requirements ALL electrical connections 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.

  • Page 23: Gas Models

    2. Electrical Service Specifications IMPORTANT: Figures shown are for non-reversing models only. For reversing models contact the factory. ELECTRICAL SERVICE SPECIFICATIONS (PER DRYER) IMPORTANT: 208 VAC AND 230/240 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. Calculate/determine correct fuse value, by applying either local and/or National Electrical Codes to listed appliance amp draw data.
  • Page 24 4. Electrical Connections A wiring diagram is located inside the control box for connection data. 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.
  • Page 25 FOR 110V APPLICATIONS A ground lug is provided in the rear electrical box to connect your service ground. b. 3-Phase (3ø) Wiring Connections/Hookup 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.

  • Page 26: Gas Information

    G. GAS INFORMATION It is your responsibility to have ALL plumbing connections made by a qualified professional to ensure 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 EDITION.

  • Page 27: Type Of Gas

    2. Technical Gas 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 * Measured at the gas valve pressure tap when the gas valve is on. b.
  • Page 28 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 29 Consistent gas pressure is essential at ALL gas connections. It is recommended that a 3/4-inch (19.050 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 (W.C.) pressure.

  • Page 30: Preparation For Operation/Start-Up

    H. 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. In the case of 208 VAC or 230/240 VAC the supply voltage must match the electric service exactly.

  • Page 31: Preoperational Tests

    I. 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.
  • Page 32 4. The dryer should be operated through one (1) complete cycle to ensure that no further adjustments are necessary and that ALL components are functioning properly. 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.

  • Page 33: Preoperational Instructions

    J. PREOPERATIONAL INSTRUCTIONS 1. To start the dryer: a. Microprocessor Controller (Computer) Dryers... 1) The 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”)... a) The dryer will then start (rotate).

  • Page 34: 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 35: 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 36 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 37: 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 38: Adjustments

    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 or touching the hot surface ignitor assembly.

  • Page 39: 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 (refer to the illustration below).

  • Page 40: Section Viii

    SECTION VIII DATA LABEL INFORMATION When contacting American Dryer Corporation, certain information is required to ensure proper service/parts information from ADC. This information is on the data label that is located in the left side panel/wall area behind the control door. When contacting ADC, please have the model number as well as the serial number readily available.
  • Page 41 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 42: 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 43 2. For Models With Johnson Controls Direct Spark Ignition (DSI) Module (G760) Theory Of Operation: Start the drying cycle. When the gas burner ignites within the chosen trial for ignition time (6-seconds), the flame sensor detects gas burner flame and signals the DSI module to keep the gas valve open...as long as there is a call for heat.

  • Page 44: Manual Reset Hi-Limit Instructions

    SECTION X MANUAL RESET BURNER HI-LIMIT INSTRUCTIONS A. PHASE 7 This dryer was manufactured with a manual reset burner hi-limit thermostat, which is monitored by the Phase 7 computer. If the burner hi-limit is open prior to the start of the drying cycle, the dryer will start momentarily and then shut down, the Phase 7 computer will display “BURNER HIGH LIMIT FAULT”...

  • Page 45: Fire Suppression System (F.s.s.)

    SECTION XI FIRE SUPPRESSION SYSTEM (F.S.S.) F.S.S. In Action The exclusive Fire Suppression System (F.S.S.) will extinguish fires that may start in the drying basket (tumbler). A series of sensors positioned throughout the basket (tumbler) and interfaced with the microprocessor will trigger the F.S.S. water jet(s) to quickly extinguish the flames. The water jet(s) remain on for 2 minutes and will automatically activate again if a fire condition remains or reignites.

  • Page 46: Installation

    BEFORE YOU START! CHECK LOCAL CODES AND PERMITS Call your local water company or the proper municipal authority for information regarding local codes. IMPORTANT: It is your responsibility to have ALL plumbing connections made by a qualified professional to ensure that the plumbing installation is adequate and conforms to local, state, and federal regulations or codes.
  • Page 47 2. Water Connections: The water connection is made to the 3/4”-11.5 NH hose adapter of the electric water solenoid valve, located at the rear upper midsection of the dryer (refer to the photo). The water solenoid valve has a 3/8” M.P.T. connection supplied with a 3/4”-11.5 NH hose adapter to provide the minimum 1/2-inch supply (feed) line.
  • Page 48 OPTIONAL MANUAL BYPASS Provisions are made in the dryer’s F.S.S. for the installation of an optional manual bypass. Depending on the model dryer, the connections for the manual bypass are made at the “T” or “four way” fitting located in the outlet supply side of the water solenoid valve.

  • Page 49: System Reset

    F.S.S. Theory of Operation While the dryer is in an idle state or 20-seconds after the heat turns off, the Phase 7 control monitors the F.S.S. probe located in the top of the basket (tumbler) chamber and records the minimum temperature. If the minimum recorded F.S.S.
  • Page 50 F.S.S. Parts Break Down Replacement parts can be obtained from your reseller or the ADC factory. When ordering replacement parts from the factory, FAX your order to ADC at (508) 678-9447 or telephone your order directly to the ADC Parts Department at (508) 678-9000.
  • Page 51 Illus. No. Part No. Qty. 822752 154007 390390 150301 122647 Description F.S.S. Temperature Probe Assembly (includes illus. nos. 1 through 5) Push On Fastener Sensor Bracket ONLY #8-18 x 7/16” Phillips Pan Head TEK Screw Connector ONLY (does not include terminals)
  • Page 52 ADC 113346 6 - 10/22/03-25...

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Ml-78 phase 7 (dsi)

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