American Dryer Corp. ML-78III manual

ML-78III (Gas/DSI/Phase 7 with F.S.S.) Installation 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 [...]

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 BEFORE ANY COVERS OR GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING , ADJUSTIN G , INST ALLA TION, OR TESTING OF ANY EQUIPMENT PER OSHA (Occupational Safety and Health Administration) ST ANDARDS. CHILDREN SHOULD NOT BE ALLOWED TO PLA Y ON OR NEAR [...]

W ARNING The dryer must never be operated with any of the back guards, outer tops, or service panels r emoved. PERSONAL INJUR Y 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 TH[...]

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

SECTION VII REVERSING TIMER SPIN/DWELL ADJUSTMENTS ..................................... 3 5 SECTION VIII DA T A LABEL INFORMA TION ............................................................................. 3 6 SECTION IX PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS ....................................................................[...]

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 dama[...]

4 B. SAFETY PRECAUTIONS W ARNING: 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. 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 [...]

5 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. W ARNING: The collection of lint in the burner area and exhaust ductwork can create a potential f[...]

6 Gas SECTION II SPECIFICA TIONS/COMPONENT IDENTIFICA TION A. SPECIFICA TIONS Shaded areas are stated in metric equivalents 9/23/03 * For non-reversing models only . * * A minimum of 3/4” pipe must be supplied to the gas inlet for each dryer. NOTE: ADC reserves the right to make changes in specifications at any time without notice or obligation. [...]

7 S pecifications NOTE: ADC reserves the right to make changes in specifications at any time without notice or obligation.[...]

8 B. COMPONENT IDENTIFICA TION 1. Dryer Front V iew Illus. No. Description 1 Controls 2 Control (top access) Door Assembly 3 Main Door Assembly 4 Lint Compartment Area (lint screen located behind door) 5 Data Label and Installation Label[...]

9 2. Dryer Rear V iew Illus. No. Description 1 Heating Unit 2 Outer T op Area 3 * Electric Service Relay Box 4 Basket (tumbler) Bearing Mount Assembly 5 Idler Bearing Mount Assembly 6 Basket (tumbler) (drive) Motor Assembly (for reversing models only) 7 Blower Motor Assembly 8 Dryer Exhaust * Electrical service connections are made in this box.[...]

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- LA TEST EDITION (National Fuel Gas Code) or ANSI/NFP A NO. 70-LA TEST EDITION (National Elec[...]

11 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. IMPOR T ANT : 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. UNP ACKING/SETTING UP Remove pr[...]

12 C. DR YER 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[...]

13 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 affecte[...]

14 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 ener gy , overheating of the dryer , and shutdown of the burner by the airflow (sail) switches,[...]

15 NOTE: As per the National Fuel Gas Code, “Exhaust ducts for T ype 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.” IMPOR T ANT : Exhaust bac[...]

16 IMPOR T ANT : 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 DR YER . IMPOR T ANT : Exhaust back pressure measured by a manometer in the exhaust duct must be no less than[...]

17 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 ) T o protect the outside end of the horizontal ductwork from the weather , a 90?[...]

18 F . ELECTRICAL INFORMA TION 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 [...]

19 * AWG Stranded Wire Type...size wire as per National Electrical Code or local codes. 9/23/03 * * Dryers are built 4-wire. Customer must contact factory to special order 3-wire. 3. Grounding A ground (earth) connection must be provided and installed in accordance with state and local codes. In the absence of these codes, grounding must conform to[...]

20 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. In both cases, a strain [...]

21 The neutral will only be used on 4-wire service. This is typical for 380-416V , 50 Hz. A ground lug is provided in the rear electrical box to connect your service ground. b. 3-Phase (3ø) W iring 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 ar[...]

22 G . GA S INFORMA TION 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 requirem[...]

23 2. T echnical Gas Data a . Gas Specifications Shaded areas are stated in metric equivalents * Measured at the gas valve pressure tap when the gas valve is on. b. Gas Connections Inlet connection -------- 3/4” N.P .T . Inlet supply size -------- 3/4” N.P .T . (minimum) Btu/hr input -------------- 204,000 (51,408 kcal/hr) 1 ) Natural Gas Regul[...]

24 3. Piping/Connections ALL components/materials must conform to National Fuel Gas Code Specifications ANSI Z223.1-LA TEST EDITION, or in Canada, CAN/CGA-B149.1-M91 (Natural Gas) or CAN/CGA-B149.2-M91 (Liquid Propane [L.P .] Gas) or LA TEST EDITION (for General Installation and Gas Plumbing), as well as local codes and ordinances and must be done [...]

25 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.) pr[...]

26 H. PREP ARA TION FOR OPERA TION/ST AR T -UP The following items should be checked before attempting to operate the dryer: 1. Read ALL “ CAUTION ,” “ W ARNING ,” 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 V AC[...]

27 I. PREOPERA TIONAL 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. T urn on electric power to the dryer . a . Ope[...]

28 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 . BASKET (TUMBLER) COA TING The basket (tumbler) is treated with a protective coating. W e suggest dampening old garments or cloth material with a solution of water and nonflammable m[...]

29 J. PREOPERA TIONAL INSTRUCTIONS 1. T o 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 (ro[...]

30 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 you[...]

31 SECTION V W ARRANTY 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 fil[...]

32 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 [...]

33 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[...]

34 90 DA YS 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: T o prevent damage, avoid cleaning or touching the hot surface [...]

35 SECTION VII REVERSING TIMER SPIN/DWELL ADJUSTMENTS T imer 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 illust[...]

36 SECTION VIII DA T A LABEL INFORMA TION When contacting American Dr yer 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 t[...]

37 THE DA T A 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. MANUF ACTURING CODE NUMBER The manufacturing code number is a number issued by ADC , which des[...]

38 SECTION IX 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 . V erify that the app[...]

39 2. For Models W ith 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. The D[...]

40 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 “BU[...]

41 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 automa[...]

42 BEFORE YOU ST ART! CHECK LOCAL CODES AND PERMITS Call your local water company or the proper municipal authority for information regarding local codes. IMPOR T ANT : 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 fe[...]

43 2. W ater Connections: The water connection is made to the 3/4”-1 1.5 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”-1 1.5 NH hose adapter to provide the minimum 1/2-inch supply (feed) [...]

44 OPTIONAL MANUAL BYP ASS 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. The use and connections of this manual bypa[...]

45 F.S.S. Theory of Operation While the dryer is in an idle state or 20-seconds after the heat turns of f, 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. probe temperature is no less than 120° F (48° C) and the control detects a[...]

46 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 , F AX your order to ADC at (508) 678-9447 or telephone your order directly to the ADC Parts Department at (508) 678-9000. Please specify the dryer model number and serial number in addition to the de[...]

47 Illus. No. Part No. Qty . Description 1 822752 1 F .S.S. T emperature Probe Assembly (includes illus. nos. 1 through 5) 2 154007 2 Push On Fastener 3 390390 1 Sensor Bracket ONL Y 4 150301 2 #8-18 x 7/16” Phillips Pan Head TEK Screw 5 122647 1 Connector ONL Y ( does not include terminals)[...]

ADC 113346 6 - 10/22/03-25[...]