American Dryer Corp. ML-122D manual

For replacement parts, contact the reseller from which the dryer was purchased or American Dryer Corporation 88 Currant Road Fall River MA 02720-4781 T elephone: (508) 678-9000 / Fax: (508) 678-9447 E-mail: techsupport@amdry .com www .amdry .com W ARNING: For your safety the information in this manual must be followed to minimize the risk of fire o[...]

Retain This Manual In A Safe Place For Futur e Refer ence 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. OBSER VE ALL SAFETY P[...]

IMPOR T ANT YOU MUST DISCONNECT AND LOCKOUT THE ELECTRIC SUPPL Y AND THE GAS SUPPL Y OR THE STEAM SUPPL Y BEFORE ANY COVERS OR GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING , ADJUSTING , INST ALLA TION, OR TESTING OF ANY EQUIPMENT PER OSHA (Occupational Safety and Health Administration) ST ANDARDS. W ARNING CHILDREN SHOULD NOT BE[...]

W ARNING The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJURY OR FIRE COULD RESUL T . IMPOR T ANT PLEASE OBSER VE ALL SAFETY PRECAUTIONS displayed on the equipment and/or specified in the installation manual included with the dryer . W ARNING DR YER MUST NEVER BE OPERA TED WITHOUT THE [...]

Table of Contents SECTION I IMPOR T ANT INFORMA TION ............................................................................... 3 A. Receiving and Handling ............................................................................................................... 3 B . Safety Precautions ....................................................[...]

SECTION VI ROUTINE MAINTENANCE .................................................................................. 4 0 A. Cleaning ................................................................................................................................... 40 B. Adjustments ......................................................................[...]

3 SECTION I IMPOR T ANT INFORMA TION 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 damag[...]

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 RESU[...]

5 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. 7. A program should be [...]

6 Gas Steam SECTION II SPECIFICA TIONS/COMPONENT IDENTIFICA TION A. SPECIFICA TIONS (GAS AND STEAM) NOTE: Contact manufacturer for electric model specifications. IMPORTANT: Dryers must be provided with a clean, dry, regulated 80 PSI +/- 10 PSI (5.51 bars +/- 0.69 bars) air supply. NOTE: ADC reserves the right to make changes in specifications at an[...]

7 NOTE: ADC reserves the right to make changes in specifications at any time without notice or obligation. Specifications MLG-122 (Gas) MLS-122 (Steam)[...]

8 B. COMPONENT IDENTIFICA TION 1. Dryer Front View Illus. No. Description 1 Microprocessor Control/Keyboard (Touch Pad) Panel Assembly (Controls) 2 Control (Top Access) Door Assembly 3 Main Door Assembly 4 Lint Panel Assembly 5 Lint Drawer 6 Wire Diagram (Located Behind Control Door) 7 Top Console (Module) Assembly[...]

9 2. Dryer Rear View Illus. No. Description 1 Electrical Service Connections 2 Top Console 3 Heating Unit 4 Relay/Wiring Box 5 Data Label and Installation Label 6 Air Connection[...]

10 SECTION III INST ALLA TION 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 Electri[...]

11 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. UNP ACKING/SETTING UP Remove protective shipping material (i.e., plastic wrap, and/or opt[...]

12 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[...]

13 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 [...]

14 D. FRESH AIR SUPPL Y 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[...]

15 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[...]

16 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. Inspection doors should be[...]

17 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 [...]

18 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[...]

19 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. When adding ducts, the duct to be added shoul[...]

20 F . ELECTRICAL INFORMA TION 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,[...]

21 2. Electrical Service Specifications IMPORTANT: The dryer must be connected to the electric supply shown on the data label that is affixed to the left side panel area behind the top control (access) door (refer to the illustration on page 9 ). In the case of 208 VAC or 240 VAC, the supply voltage must match the electric service specifications of[...]

22 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 [...]

23 G . GAS INFORMA TION 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 requireme[...]

24 2. Technical Data a. Gas Specifications 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. Incoming supply pressure mu[...]

25 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 [...]

26 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).[...]

27 H. STEAM INFORMA TION 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 V[...]

28 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. b. The steam supply piping to the dryer mus[...]

29 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. Air Requirements b. Air Connection Air connection to system --- 1/8” [...]

30 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. If steam damper adjustment is necessa[...]

31 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 2 . Air Connection Air connection to system --- 1/8” F.P.T. 3 . No air regulator or filtration is provided with the dryer. Exter[...]

32 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. Check bolts, nuts, screws, terminals, and fittings for security. 11. STEAM MODELS - check to insure air supply (80 PSI [5.[...]

33 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 pre[...]

34 BASKET COATING 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 adjustme[...]

35 L. OPERA TING 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 (touc[...]

36 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. Discontinue the heat supply: a. GAS MODELS ... discontinue the gas supply . 1) SHUT OFF external gas supply s[...]

37 SECTION IV SER VICE/P AR TS INFORMA TION A. SER VICE 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 [...]

38 SECTION V WARRANTY INFORMA TION A. RETURNING W ARRANTY 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[...]

39 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. Specify whether the part(s) being returned is for a replacement, a credit, or a refund. NOTE: If a part is marked fo[...]

40 SECTION VI 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 [...]

41 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),[...]

42 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 n[...]

43 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 illus[...]

44 SECTION VIII 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. Verify that the motor([...]

45 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 .) 1) “FAN” (Blower) output light emitting diode (L.E.D.) indicator 2) “FOR” (Forward) output L.E.D. indicator 3) “Rev” (Reverse) output L.E.D. indicator 4) “Air?[...]

46 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. The microprocessor controller (computer) board’s L.E.D. display must read “MAIN [...]

47 3. For Direct Spark Ignition (DSI) System Models Manufactured With ADC M odule 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” for up to approximately 1.5-seconds[...]

48 SECTION IX DA T A LABEL INFORMA TION A. DA T A 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 top control (access) door . W hen con[...]

49 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. MANUFACTURING CODE NUMBER The manufacturing code number is a number issued by ADC, which describes[...]

50 SECTION X BURNER AND BASKET (TUMBLER)/LINT CHAMBER MANUAL RESET HI-LIMIT INSTRUCTIONS (FOR PHASE 6 MODELS) 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 o[...]

ADC 113126 1 - 02/16/00-15 2 - 11/10/00-10 3 * 08/13/01-25[...]