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ADC ML-175 Installation & Operator's Manual

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ML-175
Installation/Operator's Manual
American Dryer Corporation
ADC

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Summary of Contents for ADC ML-175

  • Page 1 ML-175 Installation/Operator's Manual American Dryer Corporation...
  • Page 2 Replacement parts can be obtained from your distributor 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 orders directly to the ADC Parts Department at (508) 678-9000.
  • Page 3 IMPORTANT CAUTION WARNING FOR YOUR SAFETY WARNING...
  • Page 4 WARNING WARNING IMPORTANT...
  • Page 5 Table of Contents SECTION I ......................... 3 IMPORTANT INFORMATION SECTION II ....................... 6 SPECIFICATIONS/COMPONENT IDENTIFICATION SECTION III ......................10 INSTALLATION PROCEDURES SECTION IV SERVICE/PARTS INFORMATION SECTION V WARRANTY INFORMATION...
  • Page 6 SECTION VI ROUTINE MAINTENANCE SECTION VII REVERSING TIMER SPIN/DWELL ADJUSTMENTS ........SECTION VIII DATA LABEL LOCATION/INFORMATION ............SECTION IX PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS ......................

  • Page 7: Important Information

    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:...
  • Page 8 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 machine, there are some articles that, due to fabric composition or cleaning method, should not be dried in it.
  • Page 9 7. A program should be established for the inspection and cleaning of lint in the burner area, exhaust duct work, 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 duct work can create a potential fire hazard.
  • Page 10 Shaded areas are stated in metric equivalents. IMPORTANT: Gas Dryers and Steam Dryers must be provided with a clean, dry, regulated 80 PSI (+/- 10 PSI) air supply. NOTE: ADC reserves the right to make changes in specifications at any time, without notice or obligation.

  • Page 11: Specifications

    Specifications MLG-175 (Gas) MLS-175 (Steam) NOTE: ADC reserves the right to make changes in specifications at any time, without notice or obligation.
  • Page 12 B. COMPONENT IDENTIFICATION 1. Dryer Front View Illus. No. Description Microprocessor Control/Keyboard Panel Assembly (Controls) Control (Top Access) Door Assembly Main Door Assembly Lint Drawer Lint Door Wire Diagram (located behind Control Door) Data Label and Installation Label Top Console (Module) Assembly...
  • Page 13 Illus. No. Description Drive (basket) Motor Drive Assembly Blower Motor Idler Assembly Installation Label Data Label Heating Unit...

  • Page 14: Section Iii

    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: National Fuel Gas Code ANSI.Z223.1-LATEST EDITION and/or National Electric Code ANSI/NFPA NO. 70-LATEST EDITION.
  • Page 15 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.
  • Page 16 2. If more headroom is needed when moving the dryer into position, the top console (module) may be removed. a. To Remove Top Console (module)... 1) Disconnect the ground wire (A in the illustration below) located at the rear upper left corner of the dryer.
  • Page 17 C. DRYER ENCLOSURE REQUIREMENTS Even though a 12-inch clearance is acceptable, it is recommended that the rear of the dryer be positioned approximately two (2) feet (24-inches) from the 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 four (4) inches and must not extend more than four (4) inches to the rear of the front.
  • Page 18 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 E. EXHAUST REQUIREMENTS 1. General Exhaust Duct Work Information Exhaust duct work should be designed and installed by a qualified professional. Improperly sized duct work 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.
  • Page 20 a. Outside Duct Work Protection 1) To protect the outside end of horizontal duct work from the weather, a 90° elbow bent downward should be installed where the exhaust exits the building. If the duct work travels vertically up through the roof, it should be protected from the weather by using a 180° turn to point the opening downward.
  • Page 21 It is suggested that the duct work from each dryer not exceed twenty (20) feet with no more than two (2) elbows (excluding dryer connections). If the duct work exceeds twenty (20) feet or has numerous elbows, the cross sectional area of the duct work must be increased in proportion to the length and number of elbows in it.
  • Page 22 The main duct should be tapered, with the diameter increasing before each individual 18-inch duct is added. IMPORTANT: The ML-175 is not provided with a back draft damper. When exhausted into a multiple (common) exhaust line, a back draft damper must be installed at each dryer duct.
  • Page 23 The duct work 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 duct work 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 duct work for periodic inspection and clean-out of lint from the duct work.
  • Page 25 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.
  • Page 26 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.
  • Page 27 3. Electrical Connections NOTE: A wire diagram is included with each dryer and is affixed to the back side of the top control (access) door. 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.
  • Page 28 4. Grounding Grounding (earth) connections 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. The ground connection may be to a proven earth ground at the location service panel.
  • Page 29 2,000 feet 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 are made by changing each burner orifice. If this conversion is necessary, contact the distributor who sold the dryer or contact the ADC factory.
  • Page 30 2. Technical Data a. Gas Specifications YPE OF Natural Gas Liquid Propane Gas Manifold Pressure* 3.5 inches W.C. 10.5 inches W.C. Inline Pressure 6.0 - 12.0 inches W.C. 10.5 inches W.C. * Measured at the gas valve pressure tap when the gas valve is on. b.
  • Page 31 3. Piping/Connections ALL components/materials must conform to National Gas Code Specifications. 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 BTU's being supplied. The dryer is provided with a 1-1/2 inch N.P.T. inlet pipe connection extending out the back area of the burner box.
  • Page 32 IMPORTANT: The dryer and its individual shut-off 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 shut-off 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 33 IMPORTANT: Failure to comply with the requirements stipulated in this manual can result in component failure which will VOID THE WARRANTY. NOTE: The ML-175 is manufactured with a pneumatic (piston) damper system which requires an external supply of clean, dry, regulated air (80 PSI +/- 10 PSI). Refer to Steam Damper Air System Connections , Section H, item 4.
  • Page 34 b. The steam supply piping to the dryer must include a 12-inch 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.
  • Page 35 This is necessary to insure that correct and clean air pressure is achieved. 5. Steam Damper System Operation The ML-175 steam damper as shown in the top illustration on page 32, 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.
  • Page 36 5. Steam Damper Air Piston (Flow Control) Operation Adjustment Although the steam damper operation was tested and adjusted prior to shipping at 80 PSI, steam damper operation must be checked before the dryer is put into operation. Refer to the illustration above for correct steam damper operation.
  • Page 37 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 left inside front side panel (refer to the illustration in Section VIII of this manual).
  • Page 38 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.
  • Page 39 1) Both spin time and stop (dwell) time are adjustable (refer to page 45). IMPORTANT: The dryer basket (tumbler) is treated with a protective coating. ADC suggests tumbling old clothes or material in the basket (tumbler), using a mild detergent to remove the protective coating.
  • Page 40 9. Make a complete operational check of ALL operating controls. a. Microprocessor controller (computer) programs/selections... 1) Each microprocessor controller (computer) has be preprogrammed by the factory with the most commonly used parameter (program) selections. If computer changes are required, refer to the computer programming manual which was shipped with the dryer.
  • Page 41 K. COMPRESSED AIR REQUIREMENTS The model ML-175 dryer requires an external supply of compressed air (2.5 cfm @ 80 PSI for gas models and 6 cfm @ 80 PSI for steam models). For Steam Models, compressed air is necessary for the air operated steam damper.
  • Page 42 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.
  • Page 43 If the distributor cannot be contacted or is unknown, contact the ADC Parts Department for a distributor in your area. Parts may also be purchased directly from the factory by calling the ADC Parts Department at (508) 678-9010 or you may FAX in your order at (508) 678-9447.

  • Page 44: Warranty Information

    A. RETURNING WARRANTY CARD(S) 1. Before any dryer leaves the ADC factory test area, a warranty card (ADC Part No. 112254) 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 45 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.

  • Page 46: Routine Maintenance

    Maximum operating efficiency is dependent upon proper air circulation. The accumulation of lint can restrict this air flow. If the guidelines in this section are met, an ADC dryer will provide may years of efficient, trouble-free, and - most importantly - safe operation.
  • Page 47 STEAM DRYERS Clean the steam coil fins. Suggest using compressed air and a vacuum cleaner with brush attachment. 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 48 Complete operational check of ALL safety devices (i.e., door switches, lint drawer switch, sail switch, burner and hi-limit thermostats). ML-175 ONLY : Squirrel cage type fan (impellor) on the blower motor must be inspected and cleaned every six (6) months.

  • Page 49: Section Vii

    SECTION VII 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 50: Section Viii

    ADC. This information is on the data label that is located in the left inside front side panel (as shown in the illustration above). When contacting ADC please have the model number as well as the serial number readily available.
  • Page 51 THE DATA LABEL 1. MODEL DRYER 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.

  • Page 52: Procedure For Functional Check Of Replacement Components

    SECTION IX PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS 1. Microprocessor (computer) Board a. Upon completing installation of the replacement microprocessor (computer) board, reestablish power to the dryer. b. Start the drying cycle by pressing any of the preset cycles in letters “A” thru “F”. c.
  • Page 53 Verify that the motor(s) heat, and door indicator lights on the back side of the microprocessor (computer) board are lit. (Refer to the illustration below.) "FAN" (Blower) L.E.D. indicator "FOR" (Forward) output L.E.D. indicator "Rev" (Reverse) output L.E.D. indicator "Air" (Air Jet) output L.E.D. indicator "HT 1"...
  • Page 54 e. Open main door. The dryer must stop and ALL indicator lights on the back side of the microprocessor (computer) board must go out. (Refer to illustration on previous page [page 49].) f. Try to restart the dryer with the main door open. g.
  • Page 55 ADC 113041 1- 11/09/98-50 2* 11/19/99-25 3- 01/18/00-50...