American Dryer Corp. ML-79 manual

ADC Part No. 113026 ML-79 WET WASH Installation/Operator's Manual For replacement parts, contact the distributor from which the dryer 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 122298GS/mt WARNING: For your safety the informa[...]

Retain This Manual In A Safe Place For Future Reference 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. Please specify the dryer model number a[...]

IMPORTANT YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and THE GAS SUPPLY BEFORE ANY COVERS or GUARDS ARE REMOVED FROM THE MA- CHINE TO ALLOW ACCESS FOR CLEANING, ADJUSTING, INSTALLATION, or TESTING OF ANY EQUIPMENT per OSHA (Occupational Safety and Health Administra- tion) STANDARDS. CHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR NEAR THE DRY[...]

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. IMPORTANT PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment and/or specified in the installation/operator's manual included with the dryer. Dryers must not be installed or stored in a[...]

Table of Contents SECTION I ......................................................................................................... 3 IMPORTANT INFORMATION A. Receiving and Handling ............................................................................................................... 3 B. Safety Precautions ..............................[...]

SECTION VI ..................................................................................................... 32 ROUTINE MAINTENANCE A. Cleaning ................................................................................................................................... 32 SECTION VII .......................................................[...]

3 SECTION I 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. If any damage w[...]

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 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 [...]

6 Basket Diameter 37" 94 cm Basket Depth 36" 152.4 cm Basket Motor 1 HP .746 kw Door Opening (Diameter) 31-3/8" 79.7 cm Basket Volume 22.4 cu. ft. .634 cu. m. Dryers per 20'/40' container 10/20 Dryers per 45'/48" Truck 24/24 Voltage Available 120-460v / 10-30 / 50/60 Hz Approx. Weight (Uncrated) 721 lbs. 327 kg Ap[...]

7 Specifications ML-79 WET WASH[...]

8 Illus. No. Description 1 Controls 2 Control (top access) Door Assembly 3 Main Door Assembly (Left hand shown) 4 Lint Compartment Area (lint screen located behind door) 5 Data Label and Installation Label (located behind control [service] door) 6 Emergency Stop B. COMPONENT IDENTIFICATION 1. Dryer Front View[...]

9 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 Electrical Code ANSI/NFPA NO. 70-LATEST EDITION, or in CANADA, the Canadian Electrical Codes Parts [...]

10 B. UNP ACKING AND SETTING UP Remove protective shipping material (i.e., plastic wrap and optional shipping box) from dryer. IMPORTANT: Dryer must be transported and handled in an upright position at all time. The dryer can be moved to its final location with or without the skid attached. To un-skid the dryer, locate and remove the four (4) bolts[...]

11 C. DRYER ENCLOSURE REQUIREMENTS Bulkheads and partitions should be made of noncombustible materials and must be located a minimum of twelve (12) inches (18 inches 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. T[...]

12 IMPORTANT: Even though a minimum of only 12 inches is required, 18 inches or more is suggested, especially in cases where sprinkler heads are over the installation and service. IMPORTANT: When fire sprinkler systems are located above the dryers, a minium of 18 inches above the dryer console (module) is required. Dryers may be positioned side wal[...]

13 To compensate for the use of registers or louvers used over the openings, this make-up air must be increased by approximately thirty-three percent (33%). Make-up air openings should not be located in an area directly near where exhaust vents exit the building. It is not necessary to have a separate make-up air opening for each dryer. Common make[...]

14 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,[...]

15 2. Single Dryer Venting Where possible, it is suggested to provide a separate exhaust duct for each dryer. The exhaust duct should be laid out in such a way that the duct work travels as directly as possible to the outdoors with as few turns as possible. It is suggested that the use of 90º turns in the ducting be avoided; use 30º or 45º angle[...]

16 It is important that the duct work from each dryer not exceed fifteen (15) feet with no more than (2) elbows (excluding dryer connections and outside exhaust outlets). If the duct work exceeds fifteen (15) feet or has numerous elbows, the cross section area of the duct work must be increased in proportion to the length and number of elbows in it[...]

17 NOTE: Where the exhaust duct passes through a wall, ceiling, or roof made of combustible materials, the opening must be 2 inches larger (all the way around) than the duct. The duct must be centered within this opening. a. Outside Duct Work Protection 1. To protect the outside end of horizontal duct work from the weather, a 90º elbow bent downlo[...]

18 IMPORTANT: Failure to comply with these codes or ordinances or requirements stipulated in this manual can result in personal injury or component failure. NOTE: Component failure due to improper installation will VOID THE WARRANTY. Each dryer should be connected to an independtly protected branch circuit. The dryer must be connected with copper w[...]

19 IMPOR T ANT : A separate circuit servicing each dryer must be provided. 2. ELECTRICAL SERVICE SPECIFICATIONS IMPORTANT: The dryer must be connected to the electric supply shown on the data label that is affixed to the back of the dryer in the upper right hand corner. In the case of 208 VAC or 230/240 VAC, the supply voltage must match the electr[...]

20 IMPORTANT: For personal safety and proper operation, the dryer must be grounded. Provisions are made for ground connection in each dryer at the electrical service connection area. 4. ELECTRICAL CONNECTIONS NOTE: A wire diagram is located in the front electrical control box for connection data. a. Single phase (1Ø) wiring connections (hookup). 1[...]

21 b. 3 Phase (3Ø) Wiring Connections and Hookup The electrical connections on ALL 3 Phase (3Ø) gas are made into the rear service box located at the upper rear of the dryer. Electrical connections for electrically heated dryers are made in the rear electric box located at the upper rear area of the dryer. IMPORTANT: A separate circuit serving ea[...]

22 b. Gas Connections: Inlet connection 3/4” inch N.P.T. Inlet supply size 3/4” inch N. P.T. Btu/hr input (per dryer) 200,000 1. Natural Gas Regulation is controlled by the dryer’s gas valve’s internal regulator. Incoming supply pressure must be consistent between 6 and 12 inches water column pressure. 2. Liquid Propane (L.P.) Gas Dryers ma[...]

23 If local codes permit, power to a gas dryer can be made by the use of a flexible U.L. listed power cord or pigtail (wire must conform to rating of dryer), or the dryer can be hard wired directly to the service breaker panel. In all cases, a strain relief must be installed where the wiring enters the dryer. 1. GAS Models Only The only electrical [...]

24 IMPORTANT: A strain relief must be used where the input wiring enters the rear electric box. Consistent gas pressure is essential at ALL gas connections. It is recommended that a 2-inch pipe gas loop be installed in the supply line serving a bank of dryers. An in-line pressure regulator must be installed in the gas supply line (header) if the (n[...]

25 H. AIR INFORMATION 1. Air Jet System The ML-79WW is manufactured with a Pneumatic Air Jet system which requires an external supply of compressed air. The air connection is made to a three way micro valve located on the rear electric relay box cover. IMPORTANT: The condensation filter must be checked and drained every thirty days. This will vary [...]

26 I. PREPARATION FOR OPERATION AND 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 back side of the to[...]

27 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. Turn on electric power to the dryer. a. Open ALL[...]

28 NOTE: To check for proper sail switch operation for gas and electric models only, open the main door and while holding main door switch plunger in, start dryer. Dryer should start but heat circuit should not be activated. If heat, burner or oven, does activate; shut dryer off and make necessary adjust ments. 5. The dryer should be operated throu[...]

29 SECTION IV SERVICE AND 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 distributor from whom the ADC equipment was purchased. If the distributor cannot be contacted or is unknown, contact the ADC Service Department for a distributor [...]

30 SECTION V 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 se[...]

31 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 for a credit or a refund, the invoice number covering the purchase of the replacement part must be provided. NOTE : Warranty tags (ADC Part No. 450064) are available at &quo[...]

32 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 duct work system. The frequency of cleaning can best be determined from experience at each location. Maximum operating efficiency is dependent[...]

33 30 DAYS Drain condensation filter bowls. This may vary depending on how often the equipment is used. NOTE : Drain bowls with manual drain to keep accumulated liquids below element. Liquid will be carried down stream if it reaches the element. This will damage the outlet humidity sensor. Replace element when plugged. 90 DAYS Remove lint from arou[...]

34 SECTION VII TROUBLESHOOTING IMPORTANT: 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, ADJUST ING, INSTALLATION, OR TESTING OF ANY EQUIPMENT PER OSHA (Occupa tional Safety Health Administration) STANDARDS. The information provided will h[...]

35 MICROPROCESSOR (COMPUTER) MODELS A. No L.E.D. display (microprocessor models only) 1. Service panel fuse blown or tripped breaker. 2. Blown control circuit L1 or L2 1/2 amp slo blo fuse. 3. Failed microprocessor controller. 4. Failed control stepdown transformer (380 volts or higher models only). B. Drive motor not operating (does not start) 1. [...]

36 1. Failed microprocessor controller (computer). G. Microprocessor controller (computer) will not accept any keyboard entries, i.e., display reads “FILL” and when keyboard entries are selected, the display continues to read “FILL.” 1. Failed keyboard label (touchpad) assembly. 2. Failed microprocessor controller (computer). H. Microproces[...]

37 2. Failed burner hi-limit switch. 3. Failed lint chamber sensor bracket tumbler hi-limit switch. ELECTRIC MODELS 1. Fault in sail switch circuit. a. Sail switch is out of adjustment or failed. b. Sail switch damper is not closing or is fluttering. 1.) Lint screen is dirty. 2.) Restriction in exhaust. 3.) No exhaust air flow. a.)) Failed impellor[...]

38 ELECTRIC MODELS 1 . Failed oven contactor or coil. 2. Failed electric heating elements. P. Dryer is taking too long to dry. 1. Exhaust duct work too long or is undersized, back pressure cannot exceed .3 inches water column. 2. Restriction in exhaust. a . Dryer back draft damper is sticking partially closed. b. Restriction or obstruction in duct [...]

39 e. Failed electric elements. f. Sail switch is fluttering. 1.) Restriction in exhaust. 2.) Switch not adjusted properly. 9. Extractors (washers) not functioning properly. 10. Failed microprocessor controller, temperature calibration is inaccurate. 11. Failed microprocessor temperature sensor, calibration is inaccurate. 12. Failed lint chamber hi[...]

40 2. Blower and out of balance. a. Excessive lint build up on blower and fan. b. Failed blower and fan. 3. Loose basket (tumbler) tie rod. 4. Failed tumbler support. 5. Loose motor mount. 6. Failed idler or basket (tumbler) bearings. 7. V-belts too tight or too loose. 8. Tumbler bearing set screws are loose. 9. Failed motor bearings.[...]

41 SECTION VIII TECHNICAL INFORMATION A. DATA LABEL Contact American Dryer Corporation When contacting American Dryer Corporation certain information is required to ensure proper service or parts information from American Dryer. This information is on the data label located on the inside of the control door. When contacting American Dryer please ha[...]

42 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. c. Verify that the motors and the heat indicator dots, in the microprocessor (computer) L.E.D. displa[...]

43 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 40]). f. Try to restart the dryer with the main door open. g. The microprocessor (computer) board’s L.E.D. must read “DOOR.” h. Close the main door and restart th[...]

44 AQUA TEX HUMIDITY SENSOR INSTRUCTIONS 1. Before operating machine, the humidity behind control door must be placed on the outer top of dryer. 2. Install sensor by running the sensor through the hole in the outer top of dryer. See figure #1. 3. Insert rubber grommet that is on humidity sensor wire, in hole on outer top. 4. Place humidity sensor i[...]

ADC 113026 1 - 07/29/99-25 2- 12/08/00-10[...]