Whirlpool L-63 Service Manual

CONSUMER SERVICES TECHNICAL EDUCATION GROUP PRESENTS L-63 JOB AID Part No. 4322260 27” DRYERS ELECTRIC & GAS

PB INTRODUCTION This Job Aid, “27 “ ELECTRIC & GAS DRYERS,” (Part No. 4322260), provides specific information on the installation, service and repair of Whirlpool 27” dryers. “27” ELECTRIC & GAS DRYERS” has been compiled to provide the most recent information on design, features, troubleshooting, service and repair procedures. GOALS AND OBJECTIVES The goal of this Job Aid is to provide detailed information that will enable the service technician to properly diagnose malfunctions and repair Whirlpool 27” electric or gas dryers. The objectives of the Job Aid are: The service technician will - • Understand proper safety precautions. • Successfully troubleshoot and diagnose malfunction. • Successfully perform necessary repairs. • Successfully return the dryer to proper operational status. WHIRLPOOL CORPORATION ASSUMES NO RESPONSIBILITY FOR ANY REPAIRS MADE ON OUR PRODUCTS BY ANYONE OTHER THAN AUTHORIZED SERVICE TECHNICIANS. © 1997 Whirlpool Corporation, Benton Harbor, MI 49022  RP  R  T 

III TABLE OF CONTENTS INTRODUCTION .................................................................................................................. II TABLE OF CONTENTS ...................................................................................................... III SECTION ONE GENERAL INFORMATION Electric Requirements .................................................................................................. 1 Exhaust Requirements for Electric and Gas Dryers .................................................. 5 Gas Requirements for Gas Dryers .............................................................................. 6 Recessed and Closet Installation Instructions ........................................................... 8 SECTION TWO THEORY OF OPERATION Controls and Cycles .................................................................................................................... 9 Electronic Dryer Control ........................................................................................................... 10 Heated Air Circulation ............................................................................................................... 11 SECTION THREE COMPONENT ACCESS .................................................................................................... 13 Removing the Console .......................................................................................................... 13 Removing the Timer .............................................................................................................. 14 Removing the Clean touch Switch Assembly ........................................................................ 14 Removing the Push to Start Button ....................................................................................... 14 Removing the Buzzer ............................................................................................................ 14 Removing the Electronic Control Board ................................................................................ 14 Removing the Dryer Top ........................................................................................................ 14 Replacing the Drum Lamp ..................................................................................................... 15 Removing the Door Switch .................................................................................................... 15 Removing the Toe Panel ....................................................................................................... 15 Removing the Blower Wheel ................................................................................................. 16 Replacing the Blower Housing .............................................................................................. 16 Replacing the Motor .............................................................................................................. 17 Replacing the Operating Thermostat and Bias Heater .......................................................... 17 Replacing the Thermal Fuse ................................................................................................. 17 Replacing the Heating Element ............................................................................................. 18 Replacing the Burner Assembly ............................................................................................ 18 Replacing the High Limit Thermostat and Thermal Cutoff .................................................... 18 Replacing the Heat Duct Assembly ....................................................................................... 18 Removing the Dryer Door ...................................................................................................... 19 Removing the Front Panel ..................................................................................................... 19 Removing the Belt and Drum ................................................................................................ 20 Replacing the Front Support Rollers and Shafts ................................................................... 20 Replacing the Grille Assembly .............................................................................................. 20 Removing the Rear Bulkhead Assembly ............................................................................... 21 Reattaching the Rear Bulkhead ............................................................................................ 21

PB SECTION FOUR TROUBLESHOOTING AND DIAGNOSIS Troubleshooting Guide ............................................................................................................. 23 Electronic Dryer Control Testing ............................................................................................. 24 SECTION FIVE TECH TIPS Wiring Diagrams ........................................................................................................................ 25 Strip Circuits .............................................................................................................................. 27 Model/Serial Number Plate Location ....................................................................................... 30 Model/Serial Number Designations ......................................................................................... 30 Product Specification and Warranty Information Source ...................................................... 30

1 A 120 volt, 60 Hz, AC only 15 or 20 Ampere fused electrical supply is required. A time-delay fuse or circuit breaker is recommended. It is recommended that a separate circuit serving only this appliance be provided. Recommended Grounding Method Electrical ground is required on this appliance. DO NOT, UNDER ANY CIRCUMSTANCES, REMOVE THE POWER SUPPLY CORD GROUND PRONG. For your personal safety, this appliance must be grounded. This appliance is equipped with a power supply cord having a 3-prong grounding plug. (Fig. 1) To minimize possible shock hazard, the cord must be plugged into a mating 3-prong grounding type wall receptacle, grounded in accordance with the National Electrical Code, ANSI/NFPA 70-1987 or the latest code and local ordinances. If a mating wall receptacle is not available, it is the personal responsibility and obligation of the customer to have a properly grounded 3-prong wall receptacle installed by a qualified electrician. Section One GENERAL INFORMATION GENERAL INFORMATION GENERAL INFORMATION GENERAL INFORMATION GENERAL INFORMATION ELECTRICAL REQUIREMENTS Electrical Shock Hazard Check with a qualified electrician if you are in doubt as to whether the appliance is properly grounded. Do Not modify the power supply cord plug. If it will not fit the outlet, have a proper outlet installed by a qualified electrician. Improper connection of the equipment-grounding conductor can result in a risk of electrical shock. Do Not use an extension cord with this appliance. Such use may result in a fire, electrical shock or other personal injury. Do Not have a fuse in the neutral or grounding circuit. This could result in a risk of electrical shock. grounding prong ➘ 3-prong grounding- type wall receptacle 3-prong grounding- plug ➘ ➘ ➘ ➘ power supply cord Fig. 1 ➘ ➘ ➘ Electrical Requirements for Gas Dryers Important: Observe all governing codes and ordinances. Electrical ground is required on this product. ! WARNING

2 Electrical Requirements for Electric Dryers Electrical Connection A. A three-wire (Fig. 2) or four-wire (Fig. 3), single phase, 120/240 volt, 60 Hz, AC only electrical supply is required on a separate 30-ampere circuit, fused on both sides of the line. A time-delay fuse or circuit breaker is recommended. B. Most local codes permit the use of flexible, 30-amp rated, power supply cord (pigtail). The power cord must be plugged into a mating 30-amp receptacle (NEMA type 10-30R). A U.L.- listed strain relief must be installed where the power cord enters the dryer. C. THE DRYER MUST BE CONNECTED WITH 10-GAUGE MINIMUM COPPER WIRE ONLY. Do Not use aluminum wire which could cause a fire. D. The power supply cord (pigtail) can be removed and the appliance can be connected directly to an individual 30-ampere fuse circuit breaker box through flexible armored or nonmetallic sheathed, 10- gauge minimum copper cable. It is the personal responsibility and obligation of Important: Observe all governing codes and ordinances. Electrical ground is required on this product. Check with a qualified electrician if you are in doubt as to whether the appliance is properly grounded. Do Not modify the power supply cord plug. If it will not fit the outlet, have a proper outlet installed by a qualified electrician. Improper connection of the equipment-grounding conductor can result in a risk of electrical shock. Do Not have a fuse in the neutral or grounding circuit. This could result in a risk of electrical shock. Do Not plug the power supply cord (pigtail) into any receptacle before connecting the pigtail to the dryer terminal block. This could result in a risk of electrical shock. ! WARNING Fig. 3 Fig. 2 Electrical Shock Hazard

3 A U.L.-listed strain relief must be provided at each end of the power supply cable (at the appliance and at the junction box). Wire sizes (10-gauge COPPER WIRE ONLY) and connections must conform with the 30-ampere circuit rating. E. For mobile home installation, the three-wire power supply cord must be removed and the appliance wiring must be revised. The appliance frame must not be connected to the neutral terminal, but must be connected to the grounding wire (green) of the power supply cord. See Alternate electrical connection - mobile home installation, for detailed instructions. If a four-wire receptacle of NEMA type 14-30R is available, a matching power supply cord (pigtail) must be used. This cord contains No. 10-gauge copper conductors with spade or ring terminals on the dryer end and terminating in a NEMA type 14-30P plug on supply end. The fourth (grounding) must be identified by a green cover and the neutral conductor by a white cover. Cord should be at least three feet long. The four-wire power supply cord and strain relief are not provided with the dryer. Grounding Instructions This appliance must be connected to a grounded metal, permanent wiring system; or an equipment- grounding conductor must be run with the circuit conductors and connected to the equipment-grounding terminal or lead on the appliance. Electrical grounding is required on this appliance. This appliance is manufactured with the neutral terminal connected to the frame. Make sure power supply is turned off. A. If local codes permit connection of the frame-grounding conductor to the neutral wire of the power supply cord: 1. Loosen the terminal block cover hold-down screw. Swing cover open to the right. 2. Attach a U.L.-listed strain relief to the dyer through the power supply cord hole. Place the power supply cord or direct wire through the strain relief. 3. Connect the neutral wire on the power supply cord to the center, silver-colored terminal of the terminal block and connect the other wires to the outer terminals. Important: Allow slack in the line between the wall and the appliance so that it can be move if servicing is ever necessary. the customer to contact a qualified electrician to assure that the electrical installation is adequate and is in conformance with National Electrical Code ANSI/NFPA 70-1987 (or the latest edition) and local codes and ordinances. Electrical Shock Hazard Disconnect power supply cord from the electric supply before making these changes. Use a new power supply cord. Failure to do so may result in electrical shock. ! WARNING

4 4. IF YOUR POWER SUPPLY CORD OR DIRECT WIRING HAS PLAIN WIRE ENDS, FOLLOW THESE STEPS: a. Strip outer covering back 3 inches from the end exposing the 3 wires. b. Strip the insulation back 1 inch from the end of each wire. Form the bare wire to “U” shaped hook. c. Loosen, do not remove, the center, silver-colored screw of the terminal block. d. Slide the end of the neutral (white or center) wire under the screw head with the open side of the hook on the right. Squeeze the wire together to form a loop. e. Tighten the screw firmly. f. Connect the remaining 2 wires to the outer screws the same way. Tighten screws firmly. 5. Close the terminal block cover and tighten screw. 6. Tighten screws on strain relief. B. If local codes DO NOT permit frame grounding to the neutral wire of the power supply cord: 1. Loosen the terminal block cover hold-down screw. Swing cover open to the right. 2. Attach a U.L.-listed strain relief to the dryer through the power supply cord hole. Place the power supply cord or direct wire through the strain relief. 3. Remove the grounding wire (green) from the external grounding connector and fasten under center silver-colored terminal block screw. 4. Connect the neutral wire of the power supply cord to the center silver-colored terminal of the terminal block and connect the other wires to the outer terminals. 5. Connect a separate copper grounding wire (No. 10 minimum) to a grounded cold water pipe by means of a clamp and then to the frame of the appliance at the external grounding connector. Use Part No. 685463 grounding wire and clamp assembly. Do Not ground to a gas supply pipe or hot water pipe. Do not connect the power supply cord to electric power supply until appliance is permanently grounded. 6. Close the terminal block cover and tighten screw. 7. Tighten screws on strain relief. C. If connecting to a four-wire electrical system (mobile home): 1. Loosen the terminal block cover hold-down screw. Swing cover open to the right. 2. Attach a U.L.-listed strain relief to the dryer through the power supply cord hole. Place the power supply cord or direct wire thought the strain relief. 3. Remove the grounding wire (green/yellow) from the external grounding connector and fasten under the center, silver-colored terminal block screw. 4. Connect the grounding wire (green) of the power supply cord to the external grounding connector. 5. Connect the neutral wire (white) of the power supply cord to the center, silver-colored terminal of the terminal block and connect the other wires to the outer terminals. 6. Close the terminal block cover and tighten screw. 7. Tighten screws on strain relief.

5 Exhaust Requirements for Gas and Electric Dryers Fire Hazard Do Not use nonmetal, flexible duct. Do Not use metal duct smaller that four inches in diameter. Do Not use exhaust hoods with magnetic latches. Improper air supply for exhausting may result in a fire. Check that exhaust system is not longer than specified. Exhaust systems longer than specified will: • Accumulate lint • Shorten the life of the product • Reduce performance and result in longer drying times and increased energy usage. Failure to follow these specifications may result in a fire. Do Not exhaust dryer into a chimney, furnace cold air duct, attic or crawl space, or any other duct used for venting. Clean the exhaust system every other year. Do Not install flexible duct under wall, ceiling or floor materials. Accumulated lint could result in a fire or cause moisture damage. ! WARNING Four inch Rigid Metal Duct is preferred. Four-inch flexible metal duct may be used. Metal flexible duct must be fully extended and supported when the dryer is in its final position. DO NOT KINK OR CRUSH THE DUCT. The metal flexible duct must be completely open to allow adequate exhaust air to flow. Plan installation to use the fewest number of elbows and turns. Allow as much room as possible when using elbows or making turns. Bend duct gradually to avoid kinking. Remove excess flexible duct to avoid sagging and kinking that may result in reduced air flow. Use duct tape to seal all joints. The Exhaust duct can be routed down, left, right, or straight out the back of the dryer. Space requirements are provided in the Installation Instructions. Minimum length of rear exhaust system depends upon the type of duct used, number of elbows and the type of exhaust hood. The maximum length for both rigid and flexible ducts is shown in chart. Side or bottom exhaust maximum length is 16 feet with two external elbows. Exhausting the dryer outside is preferred. Four inch Rigid Metal Duct is preferred. Four-inch flexible metal duct may be used. Metal flexible duct must be fully extended and supported when the dryer is in its final position. DO NOT KINK OR CRUSH THE DUCT. The metal flexible duct must be completely open to allow adequate exhaust air to flow.

Whirlpool L-63 Service Manual

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