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AD-170
Service Manual
Phase 5 Microprocessor Controls
and
Timer Controls
American Dryer Corporation
88 Currant Road
Fall River, MA 02720-4781
Telephone: (508) 678-9010 / Fax: (508) 678-9447
E-mail: techsupport@amdry.com
ADC Part No. 450400
123096MFM/tf
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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 properly licensed technicians should service this equipment. OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation/ operator's manual included with the dryer. WARNING:UNDER NO CIRCUMSTANCES
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IMPORTANT YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPLY and THE GAS SUPPLY or THE STEAM 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. CAUTION LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION. VERIFY PROPER OPERATION AFTER SERVICING. CAUTION DRYER(S)
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FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPOR AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. DO NOT DRY MOP HEADS IN THE DRYER. DO NOT USE DRYER IN THE PRESENCE OF DRY CLEANING FUMES. IMPORTANT PLEASE OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment and/or specified in the installation/operator's manual included with the dryer. Dryer(s) must not be installed or stored in an area where it will be exposed to water and/or weather. The wiring diagram for
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Table of Contents SECTION I Important Information ..................................................................................................................................... 3 A. Safety Precautions .......................................................................................................................................... 3 SECTION II Maintenance ................................................................................................................................
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SECTION V Servicing ........................................................................................................................................................... 13 A. Computer Controls ....................................................................................................................................... 14 B. Ignition Controls ..........................................................................................................................................
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SECTION I Important Information A. Safety Precautions 1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. 2. Purchaser/user should consult the local gas supplier for proper instructions to be followed in the event the user smells gas. The instructions should be posted in a prominent location. 3. Dryer must be exhausted to the outdoors. 4. Although ADC's dryer is a very versatile machine, there are some articles, that due to fabri
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SECTION II 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 upon proper air circulation. The accumulation of lint can restrict this airflow. If the guidelines in this section are met, an ADC dryer will provid
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6 MONTHS Inspect and remove lint accumulation in customer-furnished exhaust duct work system. Inspect exhaust back draft dampers to insure they are not binding. Inspect and remove ALL lint accumulation from in and around control box area, including coin acceptors. Clean lint accumulation from around tumbler wrapper area. WARNING: THE ACCUMULATION OF LINT IN THE EXHAUST DUCT WORK CAN CREATE A POTENTIAL FIRE HAZARD. AS REQUIRED In cleaning and care of the cabinet, avoid using harsh abrasives.
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SECTION III Installation Requirements Installation should be performed by competent technicians in accordance with local and state codes. In the absence of these codes, 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 A. Enclosure, Air Supply, and Exhaust Requirements NOTE: The following information is very brief and general. For detailed description, refer to the
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B. Electrical and Gas 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 Electric Code ANSI/NFPA No. 70-LATEST EDITION. IMPORTANT: Failure to comply with these codes o
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SECTION IV Description of Parts A. Computer Panel Assembly The computer panel assembly on the AD-170 consists of a phase 5 computer board a keypad label. The keypad inputs your selections into the computer and the computer board directs all the functions of the dryer. B. Control Box Lifting the control door and opening the computer panel will reveal the control box. Inside the control box are ALL the electronic control components. Located on the back of the control box are the 30-position blo
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D. Gas Burner Assembly Gas-heated dryers are equipped with a gas burner assembly consisting of four (4) burner tubes, gas valve, spark ignition probe assembly, sail switch, and hi-limit thermostat. The inlet piping enters through the rear of the dryer on the left-hand side (viewing from the front) and runs to the front of the dryer where the gas valve is located. E. Drive Motor The T.E.F.C. (totally enclosed, fan-cooled) drive motor is located approximately lower center of the dryer. It sits o
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NOTE: The bearing on this type of blower assembly should be greased according to the maintenance section of this manual. H. Idler Assembly (Viewing from the rear of the dryer) the idler assembly is located approximately on the lower center of the dryer. The idler assembly consists of two (2) idler pulleys, the small and large pulleys. The idler's main purpose is to reduce the speed and increase torque provided to the tumbler bearing. Also, at the idler assembly, belt tension can be adjusted. I
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K. Main Door Switch The main door switch is located in the main door hinge block. When the main door opens, the switch will also open, preventing the dryer from operating. The main door switch is a safety device and should never be disabled. L. Sail Switch (Gas Models ONLY) The sail switch is located on the front of the burner box. A sail switch consists of a round damper plate on a lever arm which is in contact with an electric switch. When the air blower comes on, it draws air through the g
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N. Automatic Reset Thermostat This is located inside the dryer in the lint compartment above the lint drawer. This thermostat senses the heated air after it has passed through the basket. If the air temperature gets too hot, the thermostat will shut off the burner. The dryer will not heat up until the air temperature cools down. At this time, the thermostat will reset. Basket and blower will run, but dryer will not heat. O. Lint Drawer The lint drawer is a pullout type and is located at the
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SECTION V Servicing Introduction ALL electrical/mechanical service or repairs should be made with the electrical power to the dryer disconnected (power off). WARNING: PERSONAL INJURY COULD RESULT The information provided in this section should not be misconstrued as a device for use by an untrained person making repairs. Service work should be performed by competent technicians in accordance with local, state, and federal codes. When contacting the factory for assistance, always have the dryer
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A. Computer Controls To Replace Computer 1. Disconnect power to the dryer. 2. Disconnect main power harness from rear of computer by squeezing locking tab and pulling connector straight back. 3. Disconnect the green ground wire from the computer. 4. Disconnect keyboard ribbon from the computer. 5. Remove the two hex nuts securing the computer to the sheet metal control panel. Remove the board by pulling the other two corners off the clinch studs. 6. Install new computer by reversing this proced
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4. Peel paper backing off new keyboard label assembly. 5. Holding the new keyboard label assembly close to the panel, insert the keyboard ribbon through the rectangular slot in the control panel. Align label assembly into position by matching the red viewing window on the label to the rectangular cutout in the panel and gently press into place. 6. Connect keyboard ribbon to the computer. 7. Reestablish power to dryer. To Replace Microprocessor Temperature Sensor Probe 1. Discontinue power to dr
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B. Ignition Controls To Remove Spark Ignitor (see above burner illustration) 1. Discontinue power to dryer. 2. Disconnect HV connector and flame probe connection from ignitor. 3. Disassemble ignitor from burner by removing the two (2) self-tapping screws. 4. Reverse procedure for installing new ignitor/flame-probe. NOTE: Before reestablishing power to dryer, visually check the following (see illustration): A. The flame electrode, ignitor electrode, and ground rod are all on the same line axis. B
