Maytag MAH3000 Service Manual

Page 1
Customer Service
TM
Washer
Washer
Service Manual
Service Manual
16010061
Compiled From
16008373, 16010199,
Page 2
SAFETY PRECAUTIONS
This manual is to be used only by a Maytag Authorized Service Technician familiar with and knowledgeable of proper safety and servicing procedures and possessing high quality testing equipment associated with microwaves, gas, and electrical appliance repair.
All individuals who attempt repairs by improper means or adjustment subject themselves and others to the risk of serious or fatal injury.
USE ONLY GENUINE MAYTAG APPROVED FACTORY REPLACEMENT COMPONENTS.
16008373-01 SAFETY PRECAUTIONS
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INTRODUCTION
Each model will be covered separately in a section pertaining only to its control system and internal components. Because the basic structure for all washers is the same, they will be covered generally without regard to model.
Model(s) covered in this manual:
MAH3000
For additional information on material covered in this manual, including safety issues, contact:
Maytag Appliances Sales Company
240 Edwards Street, S.E.
Cleveland, TN 37311
Phone: 423.472.3333
FAX: 423.478.6722
16008373-01 INTRODUCTION
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CONTENTSCONTENTS
CONTENTS
CONTENTSCONTENTS
INTRODUCTIONINTRODUCTION
INTRODUCTION
INTRODUCTIONINTRODUCTION CONTENTSCONTENTS
CONTENTS
CONTENTSCONTENTS
SECTION 1. GENERAL INFORMATIONSECTION 1. GENERAL INFORMATION
SECTION 1. GENERAL INFORMATION
SECTION 1. GENERAL INFORMATIONSECTION 1. GENERAL INFORMATION
PRE-INSTALLATION REQUIREMENTS............................................................................................................ 1 - 1
UNCRATING....................................................................................................................................................................... 1 - 1
INSTALLATION.................................................................................................................................................................. 1 - 2
GROUNDING POLARITY CHECKS ...................................................................................................................... 1-4
SPECIFICATIONS............................................................................................................................................................. 1-4
WASHER CONTROLS................................................................................................................................................... 1 - 5
INPUT DEFINITIONS..................................................................................................................................................... 1 - 6
OUTPUT DEFINITIONS............................................................................................................................................... 1 - 8
CYCLE SEQUENCE DEFINITIONS................................................................................................................... 1-10
MISCELLANEOUS....................................................................................................................................................... 1-11
Door Latch Switch Monitoring.................................................................................................................... 1-11
Door Lock/Spin Control................................................................................................................................... 1-11
Redistribution ......................................................................................................................................................... 1-11
Push-To-Start Relay Operation .................................................................................................................... 1-12
CYCLE REVIEW............................................................................................................................................................. 1-13
GENERAL COMPONENT EXPLODED VIEW ............................................................................................ 1-14
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1-11-1
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1-11-1
SECTION 2. ELECTRICAL COMPONENTS & TESTINGSECTION 2. ELECTRICAL COMPONENTS & TESTING
SECTION 2. ELECTRICAL COMPONENTS & TESTING
SECTION 2. ELECTRICAL COMPONENTS & TESTINGSECTION 2. ELECTRICAL COMPONENTS & TESTING
ELECTRICAL TEST EQUIPMENT ........................................................................................................................ 2 - 1
ELECTRICAL TESTS ..................................................................................................................................................... 2-2
Grounded Components..................................................................................................................................... 2-2
Voltage Checks ......................................................................................................................................................... 2-2
Water Valve Test....................................................................................................................................................... 2-2
Wax Motor Check/Door Lock Mechanism............................................................................................ 2-2
Timer & Console Switches ............................................................................................................................... 2-3
Timer Input Charts.................................................................................................................................................. 2-3
Machine Control....................................................................................................................................................... 2-5
DRIVE MOTOR ................................................................................................................................................................... 2-7
MOTOR CONTROL BOARD ...................................................................................................................................... 2-7
Motor & Motor Control Test............................................................................................................................ 2-8
Motor Phase Test .................................................................................................................................................... 2-8
Motor Windings Check ....................................................................................................................................... 2-9
Tachometer Circuit Diagnostics ................................................................................................ .............2-10
UNBALANCE CONTROL SYSTEM .................................................................................................................. 2-11
Tub Displacement Switch............................................................................................................................... 2-12
Strut Displacement Switch ............................................................................................................................ 2 -1 2
Inertial Unbalance Switch ............................................................................................................................... 2-13
Cabinet Vibration Sensor ............................................................................................................................... 2-13
Cabinet Vibration Absorber ......................................................................................................................... 2-13
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2-12-1
2-1
2-12-1
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© 1998 Maytag Corporation
CONTENTS
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SECTION 3. TROUBLESHOOTINGSECTION 3. TROUBLESHOOTING
SECTION 3. TROUBLESHOOTING
SECTION 3. TROUBLESHOOTINGSECTION 3. TROUBLESHOOTING
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3-13-1
3-1
3-13-1
DIAGNOSTIC FLOW CHARTS....................................................................................................3-4
Fills and Will Not Tumble................................................................................................................................... 3-4
Washer Overfills....................................................................................................................................................... 3-5
Washer Will Not Spin ........................................................................................................................................... 3-6
Machine Stalls During Spin............................................................................................................................... 3-8
Maximum Spin Speed Is Not Reached ................................................................................................... 3-9
Wash Cycle Takes Longer Than Normal .............................................................................................. 3-10
Suds Coming Out Of Door............................................................................................................................. 3 - 10
Washer Will Not Start ........................................................................................................................................ 3-11
Motor Phase Test ................................................................................................................................................. 3-12
TIMER TEMPLATE OVERLAY ............................................................................................................................. 3- 13
MISCELLANEOUS INFORMATION.................................................................................................................. 3-14
SECTION 4. CONSOLESECTION 4. CONSOLE
SECTION 4. CONSOLE
SECTION 4. CONSOLESECTION 4. CONSOLE
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4-14-1
4-1
4-14-1
REMOVAL............................................................................................................................................................................. 4-1
VERTICAL SWITCHES.................................................................................................................................................. 4-2
HORIZONTAL SWITCHES.......................................................................................................................................... 4-2
TIMER REMOVAL/REPLACEMENT.................................................................................................................... 4-3
SECTION 5. CABINET ASSEMBLYSECTION 5. CABINET ASSEMBLY
SECTION 5. CABINET ASSEMBLY
SECTION 5. CABINET ASSEMBLYSECTION 5. CABINET ASSEMBLY
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5-15-1
5-1
5-15-1
DOOR ASSEMBLY & HINGES ................................................................................................................................. 5-1
Cabinet Vibration Absorber ............................................................................................................................ 5-2
Door Latch Hoop ..................................................................................................................................................... 5-2
FRONT PANEL................................................................................................................................................................... 5-2
TOP COVER......................................................................................................................................................................... 5-3
DOOR LOCK MECHANISM ....................................................................................................................................... 5-3
FRONT SHROUD ASSEMBLY................................................................................................................................. 5-4
CABINET ASSEMBLY W/REAR ACCESS PANEL...................................................................................... 5-5
SECTION 6. WATER CARRYING COMPONENTSSECTION 6. WATER CARRYING COMPONENTS
SECTION 6. WATER CARRYING COMPONENTS
SECTION 6. WATER CARRYING COMPONENTSSECTION 6. WATER CARRYING COMPONENTS
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6-16-1
6-1
6-16-1
WATER VALVE................................................................................................................................................................... 6 -1
WATER LEVEL PRESSURE SWITCH.................................................................................................................. 6-2
AIR DOME HOSE.............................................................................................................................................................. 6-2
DISPENSER ASSEMBLY............................................................................................................................................. 6-3
FRONT WATER FLUME INJECTOR..................................................................................................................... 6-4
PUMP ASSEMBLY.......................................................................................................................................................... 6-4
Pump Accessory ..................................................................................................................................................... 6-5
DRAIN HOSE....................................................................................................................................................................... 6-6
SECTION 7. OUTER TUB & SPINNER ASSEMBLYSECTION 7. OUTER TUB & SPINNER ASSEMBLY
SECTION 7. OUTER TUB & SPINNER ASSEMBLY
SECTION 7. OUTER TUB & SPINNER ASSEMBLYSECTION 7. OUTER TUB & SPINNER ASSEMBLY
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7-17-1
7-1
7-17-1
BAFFLES................................................................................................................................................................................ 7 - 1
DOOR BOOT........................................................................................................................................................................ 7 -1
OUTER TUB COVER...................................................................................................................................................... 7-2
SPIN BASKET ASSEMBLY W/BALANCE RING .......................................................................................... 7-3
DRIVE PULLEY.................................................................................................................................................................. 7-4
SPINNER TUB SUPPORT........................................................................................................................................... 7-5
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©1997 Maytag Corporation
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SEAL SYSTEM .................................................................................................................................................................. 7-6
OUTER TUB ASSEMBLY............................................................................................................................................ 7-7
BEARINGS............................................................................................................................................................................ 7-7
COUNTER WEIGHTS.................................................................................................................................................... 7-7
STRUT ASSEMBLY........................................................................................................................................................ 7-8
Strut Displacement Switch ............................................................................................................................... 7-8
INERTIAL UNBALANCE SWITCH......................................................................................................................... 7-8
TUB DISPLACEMENT SWITCH............................................................................................................................. 7-9
SECTION 8. MOTOR DRIVE SYSTEMSECTION 8. MOTOR DRIVE SYSTEM
SECTION 8. MOTOR DRIVE SYSTEM
SECTION 8. MOTOR DRIVE SYSTEMSECTION 8. MOTOR DRIVE SYSTEM
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8-18-1
8-1
8-18-1
DRIVE BELT ......................................................................................................................................................................... 8 -1
DRIVE MOTOR ................................................................................................................................................................... 8 - 1
MACHINE CONTROL.................................................................................................................................................... 8-2
MOTOR CONTROL ......................................................................................................................................................... 8-3
SECTION 9. ELECTRICAL SCHEMATICSSECTION 9. ELECTRICAL SCHEMATICS
SECTION 9. ELECTRICAL SCHEMATICS
SECTION 9. ELECTRICAL SCHEMATICSSECTION 9. ELECTRICAL SCHEMATICS
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9-19-1
9-1
9-19-1
Schematic Prior to Series 17 .......................................................................................................................... 9 - 1
Timer Chart Prior to Series 17 ....................................................................................................................... 9-2
Schematic Series 17.............................................................................................................................................. 9-3
Timer Chart Series 17 .......................................................................................................................................... 9-4
Schematic Series 18.............................................................................................................................................. 9-5
Timer Chart Series 18 .......................................................................................................................................... 9-6
Schematic Series 19.............................................................................................................................................. 9-7
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© 1998 Maytag Corporation
CONTENTS
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SECTION 1. GENERAL INFORMATION
PRE-INSTALLATION REQUIREMENTS
NOTE: Proper installation is the responsibil-
ity of the purchaser .
Checkpoints for proper installation:
Properly grounded electrical outlet is re-
quired. Use 15 amp fuse or compatible circuit breaker for electrical service.
Standpipe Drain System must accept 1½"
O.D. drain hose. Standpipe height of 36" is recommended.
NOTE: If drain standpipe is in excess of 5 feet above floor level, install pump accessory kit, part number 22002136.
This unit is not equipped with a siphon
break, and the drain hose must be elevated to a minimum height of 24". A 36" high standpipe is recommended. For all instal­lations the drain hose must be supported by the drain hose strap on the back of the washer.
Hot and Cold water faucets must be within
four (4) feet of the back of the washer . This allows quick access for immediate water shut off.
Water heater should be set to deliver a
minimum of 120ºF (49º C) hot water to the washer.
Do not store or operate washer in tem-
peratures below freezing. This can cause damage to the pump, hoses and other components.
cause an extended fill time. Refer to the troubleshooting section for more infor­mation regarding a solution for slow fill situations.
Best performance is obtained with the washer installed on a solid floor. Wood floor constructions may need to be rein­forced to minimize vibration from unbal­anced load situations. Carpets and soft tile surfaces are also contributing factors to vibration and/or movement during the spin cycle. Never install washer on a plat-
form or weak support structure.
UNCRATING INSTRUCTIONS
NOTE: The following steps must be per-
formed in the correct order to ease uncrating.
1. Remove the carton by cutting only in marked areas of the carton. CAUTION:
Hoses are connected to the washer.
2. Carefully remove any packaging materi­als from the outside of the washer.
IMPORTANT: DO NOT cut the red straps securing the power cord and inlet hoses at this time. They will be removed later
during installation.
3. Remove the accessory package from in­side the tub.
4. Remove the crate bottom from the washer by removing crate bottom wire clips.
Water pressure of 20 - 120 P.S.I. is required to fill the washer in the appropriate time frame. Pressures of less than 20 P.S.I. may
16008373-01 SECTION 1. GENERAL INFORMATION
© 1998 Maytag Corporation
1-1
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INSTALLATION
1. Two separate red shipping straps are used to secure the machine for shipping pur­poses and to secure the power cord with the water inlet hoses. Remove the straps in the following sequence:
A . Locate the metal buckles securing the red
straps which extend through slots in the rear wall of the cabinet. The buckles are positioned in the center of the red straps. Carefully cut the red straps, and remove the metal buckles. NOTE: Cut the straps as close to the buckles as possible. Dis­card the buckles.
Figure 1-2
3. Locate the two (2) ½" hex head shipping bolts extending up through the bottom of the base (Figure 1-4). The shipping bolts are near the center of the base toward the front of the washer. Remove both bolts, freeing the tub and suspension. Do not be alarmed should the tub assembly shift when the last bolt is removed. Some shift­ing of the tub is normal.
Figure 1-1
Figure 1-3
B. Grasp each loose strap individually and
pull the strap to remove it from the cabi­net. Discard the strap (Figure 1-2).
2. Tip washer slightly forward. Loosen rear leveling leg lock nuts. Tip washer back slightly to loosen front leveling leg lock nuts (Figure 1-3).
16008373-01 SECTION 1. GENERAL INFORMATION 1-2
© 1998 Maytag Corporation
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Turn on the water and check for leaks (Figure
1-5). Note the H and C designations on the water valve bracket for the Hot and Cold hoses.
Figure 1-4
4. Slide the washer into position and check the levelness and stability of the washer. If necessary, slide the washer out of posi­tion to either raise or lower the leveling leg as required to level and stabilize the washer securely on all four legs. Slide the washer back into position to confirm lev­elness to the floor. When the washer is level, tighten the locking nuts up against the base of the washer. This will secure the leveling legs in place.
5. Install the rubber feet, found in the instal­lation package, on all four (4) legs (Figure
1-3).
6. Pull the drain hose vertically to the drain strap . Then route the drain hose through the drain hose strap on the back of the washer and snap into the plastic hook of the strap.
7. Install gooseneck end of drain hose into drain standpipe. Be sure the connection is not airtight between the drain hose and standpipe. Standpipe must be at least 24" high. 36" height is recommended.
8. Connect inlet hoses to water supply us­ing screen washers (found in the installa­tion package) at faucet connections, with the domed screen facing the faucet. At­tach hoses to the faucets and the water valve.
Figure 1-5
NOTE: Accessory inlet hoses are available in various lengths, up to 10 feet.
GROUNDING POLARITY CHECKS
The receptacle used for all Maytag products operating on 120 Volts AC must be properly grounded and polarized.
The power cord should be equipped with a three (3) PRONG POLARIZED GROUNDING PLUG FOR PROTECTION AGAINST SHOCK HAZARD and should be plugged directly into a properly grounded and polarized receptacle.
CAUTION: Do not cut or remove the ground­ing prong from this plug.
It is the responsibility of the person installing the appliance to ensure it is adequately grounded and polarized at the point of instal­lation. Local conditions and requirements should be taken into consideration. In cases where only a two (2) prong receptacle is avail­able, it is the personal responsibility of the customer to have it replaced with a properly grounded and polarized three (3) prong recep­tacle (Figure 1-6).
16008373-01 SECTION 1. GENERAL INFORMATION
© 1998 Maytag Corporation
1-3
Page 10
Plug power cord into a properly grounded 120 volt AC-approved electrical service. This must be protected by a dedicated 15 amp fuse or circuit breaker.
All grounding and wiring should be performed in accordance with national and local codes.
USE OF ADAPTERS IS NOT RECOMMENDED.
Figure 1-6
SPECIFICATIONS
CAPACITY 3.1 Cubic Feet
CAPACITY 3.1 Cubic Feet
ELECTRICAL 120 volt s, 60 Hz; Requi r es 15 am p circ uit b r eaker or fus ed el ect ri cal
ELECTRICAL 120 volt s, 60 Hz; Requi r es 15 am p circ uit b r eaker or fus ed el ect ri cal
supply. Power cord must be connected to a properly grounded and
supply. Power cord must be connected to a properly grounded and pol arized o utlet .
pol arized o utlet .
MOTOR Switched Reluctance Motor controlled by a microprocessor motor
MOTOR Switched Reluctance Motor controlled by a microprocessor motor
control board. Motor pulley ratio (motor to spinner RPM) 14 to 1.
control board. Motor pulley ratio (motor to spinner RPM) 14 to 1.
POWER U SAGE Motor Input : During Wash Tumble - 150 Watts
POWER U SAGE Motor Input : During Wash Tumble - 150 Watts
(Wattage readings taken with no clothes in spinner.)
(Wattage readings taken with no clothes in spinner.)
TU MBL ER SPEED Wash Tumble 47-51 RPM
TU MBL ER SPEED Wash Tumble 47-51 RPM
Rin se Tu m ble 47-5 1 RPM
Rin se Tu m ble 47-5 1 RPM High Speed Spin 800 RPM (± 50 RPM based upon optim um
High Speed Spin 800 RPM (± 50 RPM based upon optim um
WATER USAGE Water pressure should be 20-120 p.s.i. (1.06-8.4 4 kg/cm ) at inlet hose
WATER USAGE Water pressure should be 20-120 p.s.i. (1.06-8.4 4 kg/cm ) at inlet hose
connection. Total water usage is approximately 25 gallons; varies w ith
connection. Total water usage is approximately 25 gallons; varies w ith cl othe s lo ad. W ater fill in th e spi n b asket w it h no clo thes, m easured
cl othe s lo ad. W ater fill in th e spi n b asket w it h no clo thes, m easured near the rear seam of the spin basket.
near the rear seam of the spin basket. WASH LEVEL 3-4 inches
WASH LEVEL 3-4 inches RINS E LEVEL 4-5 inc hes
RINS E LEVEL 4-5 inc hes
HOSE LENGTHS Four-foot inlet hoses with inlet washers and attaches to water valve.
HOSE LENGTHS Four-foot inlet hoses with inlet washers and attaches to water valve.
DIMENSIONS Cab ine t di mens io ns: 27" (68.58c m) W x 27 ½ ” (69.85 cm ) D x 36"
DIMENSIONS Cab ine t di mens io ns: 27" (68.58c m) W x 27 ½ ” (69.85 cm ) D x 36"
WEIGHT (Approx.) Un car to ned 190lb . (86 kg.) Ap p ro x .
WEIGHT (Approx.) Un car to ned 190lb . (86 kg.) Ap p ro x .
S CREW & BO LT T ORQ UES Bolt, Counter Weight 7in. lbs. (± 3in.lbs)
S CREW & BO LT T ORQ UES Bolt, Counter Weight 7in. lbs. (± 3in.lbs)
Drain hose attaches to pump and will accomm odate 36" dr ain stand
Drain hose attaches to pump and will accomm odate 36" dr ain stand pipe.
pipe.
(91. 44cm )H.
(91. 44cm )H.
Crat ed 200lb . (91 kg) . Ap p ro x .
Crat ed 200lb . (91 kg) . Ap p ro x .
Bolt, Spin Pulley 30in. lbs (± 3in. lbs)
Bolt, Spin Pulley 30in. lbs (± 3in. lbs) Bolt, Belt Adjuster 90in. lbs (± 10in. lbs)
Bolt, Belt Adjuster 90in. lbs (± 10in. lbs) Screw, Front Baffle 25in. lbs (± 3in. lbs)
Screw, Front Baffle 25in. lbs (± 3in. lbs) Screw, Rear Baffle 18.5in. lbs (± 3in. lbs)
Screw, Rear Baffle 18.5in. lbs (± 3in. lbs) Clam p, Ho ses 15+ in. lb s
Clam p, Ho ses 15+ in. lb s Nuts, Spinner Support 18in. lbs (± 3in. lbs)
Nuts, Spinner Support 18in. lbs (± 3in. lbs) Nuts, Suspension Struts 7in. lbs (± 3in. lbs)
Nuts, Suspension Struts 7in. lbs (± 3in. lbs)
Du ring Rinse Tu m ble - 17 5 Watt s
Du ring Rinse Tu m ble - 17 5 Watt s To p Spin - 80 0 Wa tt s
To p Spin - 80 0 Wa tt s
spin performance.)
spin performance.)
16008373-01 SECTION 1. GENERAL INFORMATION 1-4
© 1998 Maytag Corporation
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WASHER CONTROLS
The control system in the Neptune horizontal axis washer generally consists of a timer and microprocessor-based machine control. These receive input signals and send output signals to other equipment in the washer, including the motor and motor control, user input switches, user indicator lights, the door latch and lock assembly, water valves, drain pump, unbalance switches, dispenser actuator wax motors, a pressure switch, and a tub light.
The machine control has direct control of these items:
- Motor speed and direction, through signals to the motor control.
- Door lock wax motor.
- Hot and cold water valves, with an input signal from the timer and pressure switch.
- Timer motor.
- On Light.
In general, the timer dial is rotated to a desired setting, selects the cycles options using the option switches, and starts the washer. The machine control reads the inputs from the timer, option switches and pressure switch then send output signals to the motor control and other components based upon those inputs. When the machine control has completed its set of instructions for the specific timer setting, it energizes the timer motor output to advance the timer to the next increment, reads a new set of input signals from the timer, and acts upon them. This continues until the cycle is complete. (See Figure 1-7 & 1-8 for a generic representa-
tion of the Neptune washer control system.)
Prior To Series 17
Figure 1-7
16008373-01 SECTION 1. GENERAL INFORMATION
© 1998 Maytag Corporation
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Figure 1-8
INPUT DEFINITIONS
DOOR LOCK SWITCH INPUT
When input is present, this is indication the washer door is locked. The machine control­ler will not command the spinner to spin faster than 50 rpm when the input is not present prior to spin.
END-OF-CYCLE SIGNAL INPUT
The End-of-Cycle Signal Input is energized through a user input switch on the control panel. When this is energized and the cycle has finished, the machine control will sound the End-of-Cycle signal (See End-Of-Cycle Sig-
nal Output).
FABRIC SELECTION INPUTS
The Fabric Selection Inputs are energized through a user input switch on the control panel. The machine control reads these in­puts to determine which cycles should be run when the washer is started.
MAX EXTRACT INPUT
The Max Extract Input is energized through a user input switch on the control panel. When input is energized, the machine control will modify the final spin profile to the max ex­tract profile.
Series 17 & Later
NOTE: If the user selects the Hand Washables fabric selection, all spins will follow the Max Extract profile regardless of whether the user selects the Max Extract option.
OUT-OF-BALANCE INPUT
The Out-of-Balance Input Signal is provided by three normally-closed switches wired in sequence. If any of these switches opens due to an out-of-balance condition, the signal will be momentarily lost (See Unbalance Control
System).
PRESSURE SWITCH INPUT
The input signal from the Pressure Switch serves two purposes. It supplies power for the water valves and provides an indication to the machine control as to whether the com­manded water level has been reached.
When the timer advances into a cycle se­quence that calls for water, power is supplied through the timer to either the wash or rinse level contacts on the pressure switch. When the water level in the tub is below the full level for that setting, the pressure switch circuit is closed, supplying power for the water valves to the machine control. When the water level switch is satisfied, the pressure switch circuit is opened and power for the water valves is no longer passed to the machine control. The
16008373-01 SECTION 1. GENERAL INFORMATION 1-6
© 1998 Maytag Corporation
Page 13
machine control interprets this loss of power as an indication that the water level has reached the full level.
When the washer is at the "full" level and the timer is set in a Prewash Tumble, Main Wash Tumble, Light Wash Tumble, or Rinse Tumble increment, the machine control will begin the sequence timing defined for each cycle and fabric selection setting (See Cycle Sequence
Definitions).
During the drain and spin increments after the main wash, first rinse, second rinse, and ex­tra rinse increments, the wash side circuit in the pressure switch is closed. When the wa­ter level drains below the wash full level, the circuit will close and energize the pressure switch input. The machine control interprets this signal (not to energize the water valve outputs) to measure how quickly the washer is draining. If the machine control commands a spin speed above 51 rpm before the pres­sure switch input is energized, it will drop the speed to 0 rpm and hold there until the pres­sure switch input is energized. An additional delay equal to the length of time elapsed will occur before the pressure switch input is en­ergized. If four minutes elapse without the pressure switch input being energized, the machine control will energize the timer mo­tor output to advance the timer into the next increment and continue with the cycle.
TACH INPUT
The tach input is a feedback signal from the motor control. It provides eight pulses per revolution of the switched reluctance motor. The motor runs at 14 times the speed of the spinner (14:1 belt ratio). The tach input is used for monitoring speed and out-of-balance de­tection (See Tachometer Circuit Diagnostics).
If the machine control commands a motor speed and direction but does not sense a tach input signal within five seconds, it will disen­gage the line relay to stop the washer. This generally indicates a locked rotor or a mal­function in the motor control.
If the machine control senses a tach input sig­nal when it is not commanding the motor to run, it will disengage the line relay to stop the washer.
If the machine control commands a coast down from final spin speed but is still receiv­ing a tach input signal after two minutes, it will disengage the line relay to stop the washer.
TEMPERATURE SENSOR INPUT
A thermistor is located in the water valve to monitor the blended incoming water tempera­ture. The machine control uses this input sig­nal to regulate the water temperature with the warm or cold wash or warm rinse tempera­ture selections (See Water Valve Outputs).
START/STOP INPUT
The start/stop input is energized by the mo­mentary Push-to-Start/Stop Switch. If this in­put is energized when a cycle is in progress, the machine control will disengage the line
TIMER INPUTS
The Timer Input signals are energized through the cams in the timer. The timer operates with a 30 second drive cycle and a 5.8 second ad­vance time (See Timer Input Charts).
relay, both water valve output signals, the door lock wax motor signal, the timer motor out­put signal, and the on-light output signal. If this input is energized when a cycle is not in progress, the machine control will energize the line relay and begin the cycle sequence as defined by the timer and user input switches
(See Push-To-Start/Line Relay Operation).
16008373-01 SECTION 1. GENERAL INFORMATION
© 1998 Maytag Corporation
WATER TEMPERATURE INPUTS
The Water Temperature inputs are two sepa­rate signals defined by a user input switch on the control panel. The machine control inter­prets these signals to determine what the wa­ter temperature should be for each fill (See
W ater Valve Outputs).
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OUTPUT DEFINITIONS
DOOR LOCKED LIGHT OUTPUT
NOTE: This section applies only to washers
between Series 10 and 16. The "Door Locked" lights on washers from Series 17 and after are controlled by a "Door Locked" light switch.
END-OF-CYCLE SIGNAL OUTPUT
The End-Of-Cycle Signal Output is an inter­nal signal on the machine control between the microprocessor and annunciator. The end-of­cycle signal sounds when a wash cycle is fin­ished and the End-Of-Cycle Input is energized. The end-of-cycle signal sounds as six pulses in a 0.35 seconds on, 0.15 seconds off pattern
(See Timer Input Charts).
The Door Locked Light Output signal powers a 1/3 watt neon indicator lamp on the control panel. This output is first energized when the Door Lock Wax Motor Output is energized. At the end of the cycle, it remains energized for 50 seconds after the Door Lock Switch Input shuts down. This delay allows the wax motor to fully retract and unlock the door.
NOTE: The washer will continue to tumble at the end of cycle until this 50 second delay is elapsed.
DOOR LOCK WAX MOTOR OUTPUT
The Door Lock Wax Motor Output signal pow­ers a wax motor in the door lock assembly. The wax motor extends to drive the door lock system for the washer.
If the washer is started with the timer set in a Prewash Tumble, Main Wash Tumble, or Light Wash Tumble increment, the machine control will wait for three minutes before energizing the Door Lock Wax Motor Output. This delay is not affected by water level. This output re­mains energized until the end of the cycle.
If the washer is started with the timer set in a Prewash Drain, Bleach Dispense, Spin1, Rinse Tumble, Spin2, or Spin3 increment, the ma­chine control will energize this output imme­diately.
ON LIGHT OUTPUT
NOTE: This section applies only to washers
from Series 17 and after. The "Door Locked" lights on washers between Series 10 and 16 are controlled by a cam on the timer.
The Door Locked Light Output signal powers a 1/3 watt neon indicator lamp on the control panel. This output is energized when the washer is operating in a wash or spin cycle. Note that the "On" light is not illuminated when the timer is in a delay increment.
TIMER MOTOR OUTPUT
The machine control energizes the Timer Motor Output to allow for variable-length timer increments. If the washer is started with the timer set in a Prewash Tumble, Main Wash Tumble, Light Wash Tumble, or Rinse Tumble increment, the machine control will not be­gin the cycle sequence timing until the water level reaches the appropriate level. The Timer Motor Output is disengaged during this time.
The machine control will stop the washer by disengaging the line relay if the following oc­cur: 1) The machine control energizes the timer motor until it senses a timer change. 2) The timer motor remains energized for five minutes while the timer inputs change (See
Timer Input Charts).
The machine control will continuously ener­gize the Door Lock Wax Motor Output during the final (Spin 3) sequence until 30 seconds before the washer begins to coast from the final speed.
16008373-01 SECTION 1. GENERAL INFORMATION 1-8
© 1998 Maytag Corporation
Page 15
The machine control counts the number of rinses during a normal wash cycle. In the first and second Rinse Tumble increments, the machine control will energize the Timer Mo­tor Output as soon as the Pressure Switch In­put is no longer energized, indicating that the water has reached the full level. In the third and fourth (if Extra Rinse is selected) Rinse Tumble increments, the machine control will energize the Timer Motor Output 30 seconds after the Pressure Switch Input is no longer asserted.
The machine control will energize the Timer Motor Output when the timer is set into a Spin1, Spin2, or Spin3 increment 30 seconds before the end of the spin. It will remain ener­gized until the timer inputs change.
TORQUE OUTPUT
The machine control commands motor speed and direction through the Torque Output from the machine control to the motor control. This output is a pulse width modulated (PWM) signal (See Section 2: Machine Control).
circuit opens and de-energizes the Pressure Switch Input on the machine control, which de-energizes the Water Valve Outputs.
The machine control will read the Water Tem­perature Sensor Input to determine the blended water temperature passing through the water valve. In a warm wash fill, the ma­chine control will first energize both the hot and cold Water Valve Outputs for five seconds then de-energize the cold Water Valve Output and monitor the water temperature. When the Water Temperature Sensor Input passes the warm threshold (approx. 20 K Ohms), the machine control will re-energize the cold out­put for the remainder of the fill.
In a cold wash fill, the machine control will first energize only the cold Water Valve Out­put for five seconds. It then energizes the hot Water Valve Output and monitors the Water Temperature Sensor Input until it passes the cold threshold (approx. 44 K Ohms), when it de-energizes the Hot Water Valve Output for the remainder of the fill.
Vcc REFERENCE VOLTAGE OUTPUT
The Vcc Outputs are a reference voltage for many of the signal outputs. On the machine control, the Vcc outputs are 24 VDC refer­enced to the 120 VAC neutral line.
WATER VALVE OUTPUTS
The machine control determines whether the hot or cold Water Valve Outputs should be en­ergized during each timer increment, but it only gates the power to the water valves, it does not directly provide that power. When the timer is in an increment calling for water, power passes from the timer to the wash or rinse level circuit in the pressure switch. When the water level is below the full level, the pres­sure switch circuit is closed and the power passes to the machine control. The machine control gates the power to the hot and cold Water Valve Outputs. When the pressure switch senses that the full level is reached, the
If the user selects a warm rinse temperature, the machine control will count the rinses and allow a warm rinse fill only on the third and fourth (if the user also selects the Extra Rinse option) rinses. The first two rinses will be cold only. The machine control does not regulate water temperature during the rinses.
NOTE: If the user chooses the Easy Care/ Perm Press fabric selection, all rinse fills will be cold regardless of whether the user also selected the warm rinse temperature.
16008373-01 SECTION 1. GENERAL INFORMATION
© 1998 Maytag Corporation
1-9
Page 16
CYCLE SEQUENCE DEFINITIONS
NOTE: Refer to Section 2: Timer Input Charts
for information on the timing of each cycle sequence.
BLEACH DISPENSE
In a Bleach Dispense increment, the machine control will follow the same tumble pattern and speed as in a Main Wash Tumble incre­ment.
DELAY
During a Delay increment, the door Lock Wax Motor Output, Door Locked Light Output (Se­ries 17 and later only), Motor Torque Output, "On" light (Series 10 to 16 only), and Water Valve Outputs are de-energized. Note that the Delay indicator is energized through a cam on the timer.
EXTRA RINSE
When the user selects the Extra Rinse option, the spin increment following the third rinse will follow the Spin2 cycle sequence. The Timer Motor Output will be energized 60 sec­onds prior to the end of the spin cycle se­quence and will remain energized to advance the timer through the "Off" increment into the Rinse Tumble increment.
washers only) will de-energize and the End­of-Cycle Signal will sound if the user had se­lected the End-of-Cycle Signal option.
LIGHT WASH TUMBLE, MAIN WASH TUMBLE, and RINSE TUMBLE
The machine control will tumble the washer at the pattern and speed defined by the Fabric Selection Inputs (See Cycle Review). Each tumble will start only after the previous tumble has completely stopped. The machine control will reverse the tumble direction after each pause. The machine control will con­tinue to tumble the washer until the timer in­puts change.
In a Light Wash Tumble or Main Wash Tumble increment, the machine control will de-ener­gize the line relay if the washer continues to tumble for 29 minutes. This would only oc­cur if the timer were to stall (See Section 1:
Timer Motor Output and Section 2: Timer Input Chart).
PREWASH DRAIN
During a prewash drain increment, the washer will tumble at the same speed and in the same pattern as in the Prewash Tumble increment for the fabric selection. The Door Lock Wax Motor Output will be energized during this increment (See Prewash Tumble).
If the Extra Rinse option is not selected, this spin will follow the Spin3 cycle sequence and the Timer Motor Output will be energized 30 seconds prior to the end of the final spin.
IDLE
The Idle increment follows the final spin in­crement in each cycle. If the Door Lock Switch Input is energized when the timer advances into the Idle increment at the end of the cycle, the machine control will tumble the washer until 50 seconds after the Door Lock Switch input is no longer energized. This allows time for the Door Lock Wax Motor to fully retract. At this time, the Door Lock Light Output (washers between Series 10 and 16 only) or the "On" Light Output (Series 17 and later
16008373-01 SECTION 1. GENERAL INFORMATION 1-10
© 1998 Maytag Corporation
PREWASH TUMBLE
When the timer is set into a Prewash Tumble increment, the machine control will tumble at 51 rpm in the following tumble pattern:
Cycle Tumble-Pause Pattern Cotton/Sturdy 6 sec. - 24 sec. Easy Care/Perm Press 6 sec. - 24 sec. Delicates 6 sec. - 24 sec. Hand Washables 3 sec. - 27 sec.
Page 17
In a Prewash Tumble increment, the machine control will de-energize the line relay if the washer continues to tumble for 15 minutes. This would only occur if the timer were to stall
(See Section 1: Timer Motor Output and Sec­tion 2: Timer Input Chart).
MISCELLANEOUS
Door Latch Switch Monitoring
At the end of a cycle, when the timer advances into the Idle increment, the machine control will keep the line relay energized until it loses power when the door latch switch opens. This guards against the switch contacts welding closed. In this condition, the machine con­trol will limit what additional cycles can be run before the door is opened as follows:
Washers between Series 10 and 16
The machine control will allow the washer to restart only if the user sets the timer into a Rinse Tumble or Spin3 increment.
Washers from Series 17 and Later
The machine control will allow the washer to restart in any setting. After that cycle completes, the user must open the door before the machine control will allow a third cycle to start.
Door Lock/Spin Control
control will energize the timer motor output until the timer inputs change so the washer can proceed with the cycle.
At the end of spin sequence, if the door lock switch input is de-energized before the washer drops below 91 rpm, a hardware circuit on the machine control will interrupt the torque out­put signal, which forces the motor control to 0 rpm, and energize the door lock wax motor circuit to lock the door. This hardware circuit will keep the door lock wax motor circuit en­ergized until the door lock switch input signal is energized.
Redistribution
The machine control commands a distribu­tion profile speed ramp from 0 rpm to 85 rpm at the beginning of each high speed (above 100 rpm) spin. When the washer reaches 85 rpm, the machine control monitors the Tach Input to determine if the speed varies through one revolution of the spinner basket. If it senses a high enough variation in speed (sug­gesting an out-of-balance condition in the clothing load), it will drop the spinner speed to 0 rpm and force a short reverse tumble to redistribute the clothing load before resum­ing the spin. If any of the out-of-balance switches trip and open the out-of-balance in­put circuit at a speed below 500 rpm, the ma­chine control will also drop the speed to 0 rpm and force the reverse tumble to redistribute the clothing load.
When the machine control begins a spin in­crement, it will not command spin speed above 51 rpm unless the door lock switch in­put is energized. At the start of a spin incre­ment, the machine control will drop the speed to 0 rpm then tumble until the switch is ener­gized. At that point, it will restart the spin se­quence. If the door lock switch is not ener­gized after 2 minutes of tumbling, the machine
16008373-01 SECTION 1. GENERAL INFORMATION
© 1998 Maytag Corporation
1-11
Page 18
© 1998 Maytag Corporation
16008373-01 SECTION 1. GENERAL INFORMATION 1-12
The following rules determine the maximum number of redistribution attempts that will be allowed in each spin step before the machine control skips the step and continues with the spin profile (See Section 2: Unbalance Con-
trol System).
STOPPING THE WASHER
1. With the washer running, power is supplied to the machine control and washer from gray wire no. 26 through the line relay.
2. When the user presses the push-to-start button, a signal is sent to the machine con­trol through red wire no. 28 telling the washer to shut down.
3. The machine control opens the internal logic switch which de-energizes the line relay.
4. When the user releases the push-to-start button, power is removed from the ma­chine control and washer (Black wire no.
27).
STARTING THE WASHER
1. With the door closed, press the push-to start switch.
2. The red no. 28 wire sends a signal to the machine control to start running.
3. 120 VAC is supplied to the machine con­trol board through black wire no. 27.
4. The machine control closes an internal switch to energize the line relay.
5. When the push-to-start button is released, power remains supplied to the machine control and the washer from gray wire no. 26 through the line relay.
Push-To-Start Relay Operation
PUSH TO START SWITCH
LINE RELAY
MACHINE CONTROL BOARD
120 VAC POWER FRO M MACH INE CONT ROL BOARD
INTERN AL LOGI C SWITCH
120 VAC LINE (When door is
closed)
GY 26
BK 27
RD 28
120 VAC Line To Timer & Motor Co ntrol Board
NO
COM
Figure 1-8
Page 19
CYCLE REVIEW
Main Wash Time/Total Cycle Time - Minutes (See Notes).
N on-M ax Extract Cotton/ Sturdy
Heavy W ash 23 .0 /4 9. 0 20 .0 /4 5.5 20/46.5 Not A pplicable
Normal Wash 17 .0 /4 3. 0 14 .0 /3 9.5 14.0 /4 0.5 No t A pplicable
Light/Quick Wash
Fin al Sp in (RPM /M i n )
Max Extract Cycles Cotton/ Sturdy
Heavy W ash 23 .0 /4 6. 0 20 .0 /4 1.5 2 0 .0 /4 2. 0 20 .0 /4 3 .0
Normal Wash 17 .0 /4 0. 0 14 .0 /3 5.5 1 4 .0 /3 6. 0 14 .0 /3 7. 0
Light/Quick Wash
Fin al Sp in (RPM /M i n )
11 .0 /3 7.0 8.0/33.5 7.0/34 .5 Not A pplicable
800/3.5 60 0/3.0 500/4.5 No t A pplicable
11 .0 /3 4.0 8.0/29.5 8 .0 /3 0.0 8 .0 /3 1.0
800/4.0 60 0/3.5 500/5.0 500/5.0
Easy Care/ Perm Press Delicates
Easy Care/ Perm Press Delicates
Hand Washables
Hand Washables
Notes:
1. The main wash times listed include 2 minutes of bleach fill and tumble time.
2. The total cycle times are approximate and will vary based on water fill times, due to types of clothing loads, available water pressure and the time for the door lock system to retract at the end of the cycle.
3. The main wash time is affected significantly if the machine control detects an excessive amount of suds. The washer will go into a suds reduction routine, consisting of a series of additional rinse and partial drain cycles to reduce the suds present (See Troubleshooting &
Diagnosis - Clothes Wet at End of Spin).
Tumble Pattern - Number of seconds tumbling/Number of seconds of pause between tumbles.
Cotton/ Sturdy Easy Care/
Perm Press
7/3 5/ 3 6/2 4 3/27
De licates Hand W ashab les
16008373-01 SECTION 1. GENERAL INFORMATION
© 1998 Maytag Corporation
1-13
Page 20
GENERAL COMPONENT EXPLODED VIEW
16008373-01 SECTION 1. GENERAL INFORMATION 1-14
© 1998 Maytag Corporation
Page 21
SECTION 2. ELECTRICAL COMPONENTS & TESTINGSECTION 2. ELECTRICAL COMPONENTS & TESTING
SECTION 2. ELECTRICAL COMPONENTS & TESTING
SECTION 2. ELECTRICAL COMPONENTS & TESTINGSECTION 2. ELECTRICAL COMPONENTS & TESTING
ELECTRICAL TEST EQUIPMENTELECTRICAL TEST EQUIPMENT
ELECTRICAL TEST EQUIPMENT
ELECTRICAL TEST EQUIPMENTELECTRICAL TEST EQUIPMENT
The equipment required to service Maytag products depends largely upon the conditions you encounter. Locating a malfunction will
DescriptionDescription
Description
DescriptionDescription
Analog Test Meter 200 00005
Digital Test Meter 20001001
Clamp-On Ammeter 20000002
AC Voltage Sensor 20000081
Analog Test MeterAnalog Test Meter
Analog Test Meter
Analog Test MeterAnalog Test Meter can be used to check for open or closed circuits, measure resis­tance, AC and DC volts, and temperature.
often require the use of electrical testing equipment such as:
Part NumberPart Number
Part Number
Part NumberPart Number
Clamp-On AmmeterClamp-On Ammeter
Clamp-On Ammeter
Clamp-On AmmeterClamp-On Ammeter can be used to detect shorts. Overloads on the circuit breaker or fuse can be traced to either the washer or circuit breaker by check­ing the washer current draw.
AC Voltage SensorAC Voltage Sensor
Digital Test MeterDigital Test Meter
Digital Test Meter
Digital Test MeterDigital Test Meter can be used to check for open or closed circuits, measure resistance, AC and DC volts, and temperature.
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
© 1998 Maytag Corporation
AC Voltage Sensor
AC Voltage SensorAC Voltage Sensor can be used to alert you if AC voltage is present so proper safety precautions can be observed. The tip of the sensor will glow bright red if voltage is between 110-600 volts AC.
2-12-1
2-1
2-12-1
Page 22
ELECTRICAL TESTS
Water Valve Test
Warning - Always shut off electrical power to the unit before beginning any service repair procedures.
Grounded Components
When performing service diagnostics, re­placements and repairs, always check to de­termine whether all ground wires linking panel and components are reattached if removed.
Voltage Checks
Generally, these checks will consist of taking readings at the wall receptacle to determine the availability of voltage to the product. Volt­age checks on individual components of a product are not recommended due to the possibility of electrical shock. Component part testing is best accomplished through conti­nuity checks with an Appliance Test Meter
(See Electrical Test Equipment).
NOTE: Use of the meter on voltage higher than the indicated range may cause perma­nent damage to the meter. To prevent dam­age, first select the highest range and then lower the range for readings which fall within the lower scale.
Set up meter for use as follows:
1. Turn selector knob to desired meter func­tion and appropriate range.
2. Plug black lead into socket marked black (-).
Check the water valve for electrical continu­ity. This check should be made with the elec-
trical supply disconnected from the washer.
Remove the wire harness from the water valve terminals and place the ohm meter probes on the terminals of the water valve. The water valve solenoid coil should have a resistance between 500-1000 ohms. If no ohms are shown on the display of the electrical test meter, the solenoid coil has an open winding and the valve should be replaced. The ther­mistor in the water valve changes in resistance in direct relationship to water temperatures. To monitor the performance of the thermistor, run a partial hot water fill and check the ohm resistance of the thermistor circuit. Then, run a cold water fill and measure the resistance again. There should be a notable difference in the resistance readings. To check the ohm resistance, pull the P2 wire harness connec­tor off the machine control and locate the P2(5) and P2(6) leads in the connector (Figure 2-3).
Wax Motor Check - Door Lock Mechanism
Check the wax motor for proper resistance.
This check should be made with the electrical supply disconnected from the washer. Re-
move the wire harness from the wax motor terminals and place the ohm meter probes on the terminals of the wax motor. The wax mo­tor should have a resistance of approximately 1900 ohms at room temperature. To check wax motors through console, see section:
Machine Control page 2-5.
3. Plug red lead into socket marked red (+).
4. Place test leads into receptacle to deter­mine voltage available.
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
© 1998 Maytag Corporation
2-2
Page 23
Timer & Console SwitchesTimer & Console Switches
Timer & Console Switches
Timer & Console SwitchesTimer & Console Switches
The timer is located in the control console on the back. It is composed of a series of switches driven by an electric timer motor. The timer motor rotates a pinion gear which then rotates internal cams. As the cams rotate, they lift and drop various switch contacts which ride on the cam. The internal switches provide cycle sequence or step inputs to the machine control to control the pump, dispenser wax motors, delay light, ON light and timer motor .
The timer wire harness connector can be pulled and the individual contacts for the vari­ous circuits can be checked with an ohm meter. As illustrated, timer contact for the drain pump is 14T
(Figure 2-1).(Figure 2-1).
(Figure 2-1).
(Figure 2-1).(Figure 2-1).
CC
C
TTTCC
TT
Figure 2-2Figure 2-2
Figure 2-2
Figure 2-2Figure 2-2
BB
B
BB
motor windings. The following chart can be used for checking other components via the timer wire harness connector.
Figure 2-1Figure 2-1
Figure 2-1
Figure 2-1Figure 2-1
Y ou can identify the wire for the drain circuit
(Figure 2-2)(Figure 2-2)
(Figure 2-2)
(Figure 2-2)(Figure 2-2)
by tracing down the side of the connector to contact 14, and across to align with column T.
Contact 8B in the connector is a direct con­tact to the neutral leg of the timer . When an ohm meter probe is placed into the 14T con­nection and the other probe is placed into 8B, an ohm reading of the complete drain circuit can be performed. The drain circuit should have a resistance of approximately 18 ohms. This is the resistance reading of the pump
Description Connector Connector Ohms
Pump Motor
Bleach Wax Motor
Softener Wax Motor
Timer Motor
Timer Input ChartsTimer Input Charts
Timer Input Charts
Timer Input ChartsTimer Input Charts
14T 10B 18
2B 10B 950-1100
2T 10B 950-1100
10T 10B 5000
As stated previously, the machine control board receives inputs from the timer monitor where the timer is in the cycle. The machine control board accomplishes this by routing four circuits through the timer. Two of the cir­cuits (1A & 1B) are supplied with 120 V AC and the other two circuits (2A & 2B) are 24 VDC. The voltages for the four circuits is shown on the timer chart of the electrical schematic enclosed in the washer console.
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
© 1998 Maytag Corporation
2-32-3
2-3
2-32-3
Page 24
Software in the machine control board specifically monitors the timer input circuits to determine where the timer is in all the wash cycles and will rapidly advance the timer to OPEN and break contacts in the timer. The timer is solely used as an off-board set of relay switches. Note: The timer motor is hard wired to timer cams 10T and 10B in the
timer.
TIMER 1A
(120 VAC)
CYCLE SEQUENCE
PREWASH TUMBLE 0 1 1 0 PREWASH DRAIN 1 1 1 0 MAIN WASH TUMBLE 0 1 0 0 LIGHT WASH TUMBLE 1 1 0 0 BLEACH DISPENSE 1 0 1 0 RINSE TUMBLE 1 0 0 1 SPIN 1 0 0 1 0 SPIN 2 0 0 0 1 SPIN 3 0 1 0 1 EXTRA RINSE 1 1 0 1 DELAY 1 0 0 0
PK19/P7(8)
TIMER 1B
(120 VAC) YL16/P7(7)
TIMER 2A
(24 VDC) PU17/P3(3)
TIMER 2B
(24 VDC) BU18/P3(5)
IDLE 0 0 0 0
Key: 0 = Input Signal Not Asserted 1= Input Signal Asserted
There are conditions under which the machine control will shut the cycle down if the timer does not advance.
- During Extra Wash/Prewash: If the timer inputs do not change away from Prewash Tumble for 15 minutes, the machine control will open the line relay.
- During Main Wash: If the timer inputs do not change for 29 minutes, the machine control will open the line relay.
- During any increment when the machine control energizes the timer motor until it sees the timer inputs change: If the timer inputs do not change for 5 minutes with the timer motor continuously energized, the machine control will open the line relay.
These varying delays are to allow the washer to progress through several increments where the timer inputs normally do not change. In these cases, the machine control energizes the timer motor for 30 seconds, which is its advance time. It does not look for a timer input change.
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
© 1998 Maytag Corporation
2-4
Page 25
Machine ControlMachine Control
Machine Control
Machine ControlMachine Control
The machine control microprocessor board is located in the control console, mounted to the rear panel. The board receives input from the timer , door latch and lock switches, and unbal­ance and selector switches on the console. It also communicates with the motor control board to facilitate the various cycles and drive the motor for optimum perfor mance. Torque and speed of the motor are monitored through the motor control board.
Prior to Series 17Prior to Series 17
Prior to Series 17
Prior to Series 17Prior to Series 17
Figure 2-3Figure 2-3
Figure 2-3
Figure 2-3Figure 2-3
Series 17 and AfterSeries 17 and After
Series 17 and After
Series 17 and AfterSeries 17 and After
Figure 2-3bFigure 2-3b
Figure 2-3b
Figure 2-3bFigure 2-3b
Both incoming and exiting voltage are monitored through the machine control board and the surrounding circuitry . The following table lists the voltages for the various terminals on the microprocessor board. If proper voltage is not present, check switches and wiring for any loose connections or open circuits by disconnecting the power supply and performing conti­nuity checks of individual circuits.
Line Relay Connector Comm (Gray wire), L1 output is Line Relay Connector Comm (BlackLine Relay Connector Comm (Gray wire), L1 output is Line Relay Connector Comm (Black
Line Relay Connector Comm (Gray wire), L1 output is Line Relay Connector Comm (Black
Line Relay Connector Comm (Gray wire), L1 output is Line Relay Connector Comm (BlackLine Relay Connector Comm (Gray wire), L1 output is Line Relay Connector Comm (Black wire).wire).
wire).
wire).wire).
NOTE:NOTE:
NOTE:
NOTE:NOTE:
Connector P5 is Neutral input and L1 input is the Connector P5 is Neutral input and L1 input is the
Connector P5 is Neutral input and L1 input is the
Connector P5 is Neutral input and L1 input is the Connector P5 is Neutral input and L1 input is the
To check voltages from the board, turn timer dial to a wash cycle and press the start/off button. This will activate the L1 relay board and apply power on the machine control.
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
© 1998 Maytag Corporation
2-52-5
2-5
2-52-5
Page 26
FUNCTION
MACHINE CONTROL BOARD TERMINAL/WIRE
MACHINE CONTROL BOARD TERMINAL/WIRE
VOLTAGE­APPROX. (When Activated)
TIMER CONTACT
Permanent Press
(Fabric Switch)
Delicates
(Fabric Switch)
Hand Wash
(Fabric Switch)
Cotton/Sturdy
(Fabric Switch)
Signal ON/OFF
(Options Switch)
Extra Rinse
(Options Switch)
Max Extract
(Options Switch)
Push To Start Switch
(When pressed)
Unbalance Control
P5 (WH11) P3/2 (PK 37) 24 VDC Not Involved
P5 (WH11) P3/6 (OR 38) 24 VDC Not Involved
P5 (WH11) P3/8 (BR 39) 24 VDC Not Involved
P5 (WH 11) P5 (WH 11) P5 (WH 11)
P5 (WH 11) P2/1 (PU 21) 24 VDC - ON
P5 (WH 11) P7/8 (PK 19) 120 VAC 12B, 6B,8T
P5 (WH 11) P2/3 (YL 20) 24 VDC Not Involved
P5 (WH 11) P1/3 (RD 28) 120 VAC Not Involved
P5 (WH11) P2/4 (OR 40) 24 VDC Not Involved
P3/2 (PK 37) P3/6 (OR 38) P3/8 (BR 39)
0 VDC 0 VDC 0 VDC
0 VDC - OFF
Not Involved
Not Involved
Door Lock - Spin P3 (1) P3/7 (YL 36) 24 VDC Not Involved Motor Control &
Machine Control Hot Water Valve P5 (WH11) P7/1 (OR7) 120 VAC or
Cold Water Valve P5 (WH11) P7/2 (BU 9) 120 VAC or
Door Lock Wax Motor
Bleach Wax Motor
Softener Wax Motor
Delay Light P5 (WH11) Not Involved 120 VAC 4T On Light
(Series 17)
P5 (WH11) LINE RELAY COM
(BK 27 or BK1)
P5 (WH11) P7/4 (BR 14) 120 VAC Not Involved
P5 (WH11) Not Involved 120 VAC 2T
P5 (WH11) Not Involved 120 VAC 2B
P5 (WH11) P7/5 (RD 3) 120 VAC Not Involved
120 VAC Not Involved
Not Involved
500-1000 Ohms
Not Involved
500-1000 Ohms
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
© 1998 Maytag Corporation
2-6
Page 27
DRIVE MOTORDRIVE MOTOR
DRIVE MOTOR
DRIVE MOTORDRIVE MOTOR
The drive motor is a switched reluctance type motor. The basic operating principle of the switched reluctance motor is direct magnetic attraction between the stationary electromag­netic coils (stator) and a specially configured rotor or armature comprised of stacked plates or laminations mounted on a center shaft. The shape of these laminations are characteristic of the switched reluctance motor. The rotor, when viewed from the end of the rotor, has "teeth" much like a gear . These "teeth", or pole pieces, are pulled as the result of direct current power through the stator coils.
(Figure 2-4)(Figure 2-4)
(Figure 2-4)
(Figure 2-4)(Figure 2-4)
. The rotor is
The following illustration shows the motor terminals for each of the coils involved. The letters with positive and negative symbols in­dicate the motor phase circuitry of the terminals.
Motor Harness Connector
Figure 2-5Figure 2-5
Figure 2-5
Figure 2-5Figure 2-5
Figure 2-4Figure 2-4
Figure 2-4
Figure 2-4Figure 2-4
Multiple stator coils are positioned around the rotor and are connected in three different phased "sets" of paired coils.
Magnetic attraction causes the rotor poles to turn toward the coils. The electronic motor control board switches the magnetic field off as the rotor pole piece approaches; then, turns on another set of coils further ahead. It is this switching action of motor phases that determines direction and rotational speed of the rotor (and shaft). The motor control board changes the 120 V AC voltage line input to 170 VDC, and distributes the current phases to the stator coil sets in sequence to the drive motor.
Refer to section titled identification of A, B and C terminal/harnesses
(Figure 2-6). (Figure 2-6).
(Figure 2-6).
(Figure 2-6). (Figure 2-6).
for harness identification.
MOTOR CONTROL BOARDMOTOR CONTROL BOARD
MOTOR CONTROL BOARD
MOTOR CONTROL BOARDMOTOR CONTROL BOARD
The motor control board r eceives 120 VAC voltage from the line cord and distributes DC voltage to the drive motor. The motor con­trol converts the voltage from single phase to 3 phase for the drive motor .
Another purpose of the motor control is to monitor the drive motor speed through a ta­chometer circuit linking the motor control board to a tachometer on the drive motor. This is a 3-wire circuit comprised of a Black, Blue and White wire harness. Failure of this circuit will cause the motor to start jerking in place or accelerate rapidly for up to 5 seconds. This occurs whenever the tachometer in the drive motor is trying to locate the proper shutter and sensor sequence. For example, if the ta­chometer signal is lost from the motor con­trol to the machine control just prior to spin, the motor will ramp up for 5 seconds then stop.
Also, see the wiring schematic
Motor ControlMotor Control
Motor Control
Motor ControlMotor Control
for board
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
© 1998 Maytag Corporation
2-72-7
2-7
2-72-7
Page 28
© 1998 Maytag Corporation
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
2-82-8
2-82-8
2-8
Motor & Motor ContrMotor & Motor Contr
Motor & Motor ContrMotor & Motor Contr
Motor & Motor Contr
ol Tol T
ol Tol T
ol T
estest
estest
est
1. Set the timer knob into the delay incre­ments.
2 . Press the push-to-start switch to start the
washer in the delay mode. Confirm the delay light is ON.
3. Check for 120 VAC between the L and N terminals (black wire no.27 and white wire no. 13) on the motor control board. If not present, check wiring between the ma­chine control and the motor control boards.
4 . Unplug the washer power cord. Test cord
to the same board terminals.
5. Remove JP4 Interface connector wire har­ness on front end of motor control board.
6. Plug the washer power cord into a 120 V AC power source. The motor control will im­mediately execute a test routine and the motor should run, rotating the spinner at 50 rpm.
6.
If the motor runs,If the motor runs,
If the motor runs,If the motor runs,
If the motor runs, and the spinner rotates
at the proper RPM speed, the problem lies outside of the motor and motor control circuit. Disconnect power to the washer and reconnect the JP4 Interface connec­tor to the motor control.
7.
If the motor does not run:If the motor does not run:
If the motor does not run:If the motor does not run:
If the motor does not run:
A. Check the 10-amp fuse located on the control board, either visually or with an ohm meter . If bad, completely replace mo­tor control/wire harness assembly
(Figure 2-6).(Figure 2-6).
(Figure 2-6).(Figure 2-6).
(Figure 2-6).
Figure 2-6Figure 2-6
Figure 2-6Figure 2-6
Figure 2-6
B. If the fuse is functioning, visually check the six semiconductors on the heat sink for any damage. If damaged, replace mo­tor control/wire harness assembly com­plete and check motor windings for dam­age
(See Drive Motor). (See Drive Motor).
(See Drive Motor). (See Drive Motor).
(See Drive Motor).
Replace motor if
necessary
(Figure 2-6) (Figure 2-6)
(Figure 2-6) (Figure 2-6)
(Figure 2-6)
..
..
.
C. If fuse and semiconductors show no visible damage, perform the motor phase test.
8. Unplug the washer power cord and re­place motor control board connector JP4 when finished.
Motor Phase TMotor Phase T
Motor Phase TMotor Phase T
Motor Phase T
estest
estest
est
It is possible for the motor to still run under light loads when one of the phases of the motor is nonfunctional. One possible symp­tom would be a "growling" noise from the motor . Torque is decreased when the motor is out of phase. This could result in a cus­tomer complaint that the load is not spinning out properly or it does not tumble consistently with a large load
(See Section 3: T(See Section 3: T
(See Section 3: T(See Section 3: T
(See Section 3: T
rr
rr
r
ouble-ouble-
ouble-ouble-
ouble-
shooting).shooting).
shooting).shooting).
shooting).
Page 29
To gain access to the motor control board terminals (Figure 2-6):
windings check (See Motor Windings
Check).
1. Disconnect power to the washer prior to
testing.
2. Remove the two screws securing the mo­tor control assembly to the base. Unsnap the two twist-lock wire ties restraining the motor to the motor control board harness base.
3. Remove the green ground wire, line & neu­tral wires and the JP4 connector from the motor control board.
4. Carefully lift the front end of the motor control board to disengage the rear lock­ing tabs from the slots in the base. Slowly drag the motor control board, with motor harness attached, toward the front of the washer and place in front of the washer.
5. Remove the screw securing the splash shield covering the face of the motor con­trol board. Pivot the splash shield with top screw in the motor control board metal frame, allowing the plastic shield to be­come an electrical shield between the motor control board and the base.
6. Reconnect the ground wire, line 1 and neu­tral wires. Leave the JP4 connector off the board (Figure 2-6).
10. Check Phase B by disconnecting the white or red wire at the motor control board. If the motor operates with a slight growling sound, phases A and C are operating cor­rectly. Reconnect phase B and test with phase A disconnected. If the motor does not run properly, phase A or C is not func­tioning. Perform the motor windings check (See Motor Windings Check).
Motor Windings Check
1. Disconnect power to the unit.
2. Remove each pair of phase wires from the motor control and perform an ohm check of each wire leading to the motor. Each wire pair should show 2-3 ohms resistance
(Figure 2-5).
2. There should be no continuity between any of the terminals and the frame of the motor.
3. Check that all six motor terminals are se­cure and at the same height in the con­nector housing. Replace motor if termi­nals are pressed into the motor.
7. Place the timer knob into the delay increments.
8. Plug the power cord into the wall socket and press the push-to-start button.
tor onto the motor. Reassemble the drip shield cover onto the motor control.
5. Reposition the motor control into the washer when finished. Make sure the two screws and the twistlock wire ties are fas-
4. Remount the six-position motor connec-
9. Check Phase C by disconnecting the yel-
tened properly to the wire harness.
low or orange wire at the motor control board. If the motor operates with a slight growling sound, phases A and B are oper­ating correctly. Reconnect phase C and test with phase B disconnected. If the motor does not run properly, phase A or B is not functioning. Perform the motor
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
© 1998 Maytag Corporation
2-9
Page 30
PHASE WIRE COLORS MOTOR CONDITION RESULT/SOLUTION
C Yellow or Orange Runs
Does Not Run
B White or Red Runs
Does Not Run
A Black or Blue Runs
Does Not Run
TT
achometer Cirachometer Cir
T
achometer Cir
TT
achometer Cirachometer Cir
The tachometer system of the motor is com­prised of a plastic wheel, called a shutter , and an optical sensor mounted to the end of the motor shaft under the plastic endbell covering of the motor . The edge of the shutter resembles a "picket fence" with different size "pickets." The pattern con­sists of six different "pickets" which are re­peated eight times. An optical sensor is mounted to one side of the shutter and moni­tors the "pickets" as they pass through the sensor .
cuit Diagnosticscuit Diagnostics
cuit Diagnostics
cuit Diagnosticscuit Diagnostics
(Figure 2-9).(Figure 2-9).
(Figure 2-9).
(Figure 2-9).(Figure 2-9).
The shutter is
-Phases A&B are operating correctly. (Check Phase A and B)
-Phase A or B is non-functional. (See Step 10)
-Phases A&C are operating correctly. (Check Phase A and C)
-Phase A or C is non-functional. (See Step 10)
-Phases B&C are operating correctly. (Check Phase B and C)
-Phase B or C is non-functional. (See Step 10)
Figure 2-9Figure 2-9
Figure 2-9
Figure 2-9Figure 2-9
As the "pickets" pass through the sensor field, signals are generated and transmitted to the motor control board through the tachometer wire harness
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
(Figure 2-10 and 2-11).(Figure 2-10 and 2-11).
(Figure 2-10 and 2-11).
(Figure 2-10 and 2-11).(Figure 2-10 and 2-11).
© 1998 Maytag Corporation
Figure 2-10Figure 2-10
Figure 2-10
Figure 2-10Figure 2-10
2-102-10
2-10
2-102-10
Page 31
The following table indicates voltage checks of the tachometer harness between the mo­tor and motor control board.
Figure 2-11Figure 2-11
Figure 2-11
Figure 2-11Figure 2-11
The motor control monitors the signals and communicates this information to the ma­chine control. The purpose of this signal is to tell the motor when to energize each winding in the motor and to tell the machine control the actual motor speed.
Note:Note:
If the machine control board does not If the machine control board does not
Note:
If the machine control board does not
Note:Note:
If the machine control board does not If the machine control board does not
receive an input signal from the motor con-receive an input signal from the motor con-
receive an input signal from the motor con-
receive an input signal from the motor con-receive an input signal from the motor con­trol/tachometer circuit (JP4 connector), thetrol/tachometer circuit (JP4 connector), the
trol/tachometer circuit (JP4 connector), the
trol/tachometer circuit (JP4 connector), thetrol/tachometer circuit (JP4 connector), the motor speed will rapidly accelerate for 5 sec-motor speed will rapidly accelerate for 5 sec-
motor speed will rapidly accelerate for 5 sec-
motor speed will rapidly accelerate for 5 sec-motor speed will rapidly accelerate for 5 sec­onds then shut down. The machine controlonds then shut down. The machine control
onds then shut down. The machine control
onds then shut down. The machine controlonds then shut down. The machine control will sense a "locked rotor" condition and thewill sense a "locked rotor" condition and the
will sense a "locked rotor" condition and the
will sense a "locked rotor" condition and thewill sense a "locked rotor" condition and the motor will stop. If the motor control doesmotor will stop. If the motor control does
motor will stop. If the motor control does
motor will stop. If the motor control doesmotor will stop. If the motor control does not rnot r
eceive an input signal freceive an input signal fr
not r
eceive an input signal fr
not rnot r
eceive an input signal freceive an input signal fr
the motor will "jerk" for 5 seconds then shutthe motor will "jerk" for 5 seconds then shut
the motor will "jerk" for 5 seconds then shut
the motor will "jerk" for 5 seconds then shutthe motor will "jerk" for 5 seconds then shut down.down.
down.
down.down.
om the motorom the motor
om the motor
om the motorom the motor
,,
,
,,
1 . Inspect the motor control wire harness for
integrity of the connections on both ends. The harness is comprised of a White, Blue and Black wire.
Tachometer Wire Checks
White to Black (From Motor Control)
White To Black (From Motor Control)
White To Black (From Motor Control)
Blue to Black (From Drive Motor)
Blue to Black (From Drive Motor)
UNBALANCE CONTROL SYSTEMUNBALANCE CONTROL SYSTEM
UNBALANCE CONTROL SYSTEM
UNBALANCE CONTROL SYSTEMUNBALANCE CONTROL SYSTEM
Voltage Found
11 VDC (± 2.5 VDC)
0 VDC
+ 13 VDC or <9 VDC
No change in DC volts as motor is turned slowly
Voltage changes from 0
- 5 VDC volts as motor is turned slowly.
Condition Of Component
Good Motor Control Board
Bad Motor Control Board
Bad Motor
Bad Motor
Good Motor
The unbalance control system is comprised of the inertial switch, outer tub displacement switch, strut displacement switch and a cabi­net vibration sensor mounted to the machine control board. The three switches are wired in series on a 24 VDC circuit, monitored by the machine control board. The sensor is mounted on the machine control board.
2 . Set the washer into the Delay Wash cycle
and press the start/off button. The unit will start without activating the motor. Leave the tachometer harness on the motor con­trol and insert the meter probes into the back side of the tachommeter harness.
Software in the machine control board will begin monitoring the switches when the spin speed reaches 90 rpm. The inertial unbalance switch monitors outer tub vibrations above 150 rpm. Inside the door is a cabinet vibra­tion absorber designed to counter the vibra­tion of the tub and serve as a tuned absorber for the whole washer .
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
© 1998 Maytag Corporation
2-112-11
2-11
2-112-11
Page 32
Whenever a displacement switch is tripped, the machine stops and redistributes the clothes load. This involves a three (3) second pause, followed by a five (5) second reverse tumble (47-49 rpm) to redistribute the clothes load. The washer will pause again for three (3) seconds, then start the distribution profile again. To redistribute the load, the machine tumbles the load (50-90 rpm) and again at­tempts to pass through critical (about 150 rpm). The machine will try to redistribute twice as the washer attempts to spin at 800 rpm.
Tub Displacement Switch
The tub displacement switch is located on the upper right hand side of the outer tub, below the top concrete weight, between the outer tub and the cabinet. The switch senses the outer tub touching the cabinet side as the machine passes through critical. When this switch is tripped, the machine stops and re­distributes the load.
Testing the Tub Displacement Switch:
Once the load is properly redistributed and the speed reaches above 500 rpm, the inertial switch and cabinet vibration sensor are used. If the inertial switch or sensor is activated, the washer will drop in spin speed. This is based upon the speed at which switch activation takes place. See Figure 2-12 outlining the spin speed categories and the corresponding re­duced speeds. If the switches are not acti­vated, the final spin speed will reach a maxi­mum of 850 rpm and then drop to find the optimum performance level, based upon readings taken by the cabinet vibration sen­sor. Consumers may be confused by the up­and-down cycling of the motor. However, the machine is searching for the optimal speed performance.
RPM FUNCTION
47 ...........................Tumble
47-85 .......................Distribution
90-250 .....................Accelerate Through
Critical
250-499..................Accelerate Through
Critical
500-575..................High Speed Acceleration
- WILL DROP TO 450 RPM
600-675..................High Speed Acceleration
- WILL DROP TO 555 RPM
>675.......................High Speed Acceleration
- WILL DROP TO 650 RPM
750-800 .............TOP SPIN SPEED
1. Disconnect power to the unit.
2. Place ohm meter leads across the two ter­minals of the switch. Depress the button on the switch. If the contacts open, the switch is good. If not, replace the switch.
Strut Displacement Switch
The strut displacement switch is clipped to the top of the left rear strut. The switch senses the outer tub bottoming out on the strut as the machine accelerates above 90 rpm. This is caused by the twisting motion of the outer tub. This additional switch is required because the twisting motion may not trip the outer tub displacement switch. The primary cause for activation would be an unbalance at the front and rear of the spinner on opposite sides.
The strut displacement switch is wired in se­ries with the tub displacement switch and causes the same type of redistribution.
Testing the Strut Displacement Switch:
1. Disconnect power to the unit.
2. Place ohm meter leads across the two ter­minals of the switch. Depress the button on the switch. If the contacts close, the switch is good. If not, replace the switch.
Figure 2-12
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
© 1998 Maytag Corporation
2-12
Page 33
Inertial Unbalance Switch
The inertial unbalance switch is located on the upper right hand side of the outer tub, in front of the top concrete weight. The switch con­sists of a moving weight in the switch body which presses against the switch contacts. If the unbalance of the outer tub becomes too erratic, the moving weight will open the con­tacts in the switch. When the machine con­troller senses the switch opening, the machine controller will reduce the spin speed to 650, 550, or 450 rpm depending on the current speed closest to the level spin speed (i.e. 625 rpm trip would drop to 550 rpm) (See Figure
2-12).
Testing the Inertial Unbalance Switch:
Testing of the switch may prove difficult. The switch will not open unless the switch is moved side to side creating a "G" force of 8 - 9 Ft. lbs.
spring rate of the absorber; and changes in the pulley-belt ratio. It can also change from run to run due to the size of the clothes load and type of floor. The sensor finds the opti­mum speed on every run. The optimum speed is between 750 and 850 rpm.
Cabinet Vibration Absorber
This is a tuned absorber mounted in the door. The tuned absorber consists of a mass sus­pended by springs tuned to vibrate at approxi­mately 800 rpm. The mass vibrates 180 de­grees out of phase with the vibration of the cabinet. This cancels out much of the vibra­tion caused by the clothes load at 800 rpm (See
Section 5: Cabinet Assembly).
1. Disconnect power to the unit.
2. Place ohm meter leads across the two ter­minals of the inertial switch. Move the switch side to side. If the contacts do not open easily, the switch is good. If the switch contacts are open or easily tripped, replace the switch.
Cabinet Vibration Sensor
The cabinet vibration sensor is mounted to the lower left corner of the machine control board. This is a piezo-electric strip mounted to the machine control board. With a mass attached to the end of the strip, the machine controller monitors the cabinet vibration as the machine reaches top speed. The machine controller uses the vibration sensor to attempt to spin the washer at the optimum speed with the least amount of vibration. Optimum speed changes from machine to machine due to: changes in mass of the absorber; changes in
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
© 1998 Maytag Corporation
2-13
Page 34
16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING
© 1998 Maytag Corporation
2-14
Page 35
SECTION 3. TROUBLESHOOTINGSECTION 3. TROUBLESHOOTING
SECTION 3. TROUBLESHOOTING
SECTION 3. TROUBLESHOOTINGSECTION 3. TROUBLESHOOTING
Washer Runs Five Minutes Then Shuts OFFWasher Runs Five Minutes Then Shuts OFF
Washer Runs Five Minutes Then Shuts OFF
Warning Warning
Warning
Warning Warning
electrical power to theelectrical power to the
electrical power to the
electrical power to theelectrical power to the unit before beginning anyunit before beginning any
unit before beginning any
unit before beginning anyunit before beginning any service repair procedures.service repair procedures.
service repair procedures.
service repair procedures.service repair procedures.
Shuts OFF When Push-To-Start Button Re-Shuts OFF When Push-To-Start Button Re-
Shuts OFF When Push-To-Start Button Re-
Shuts OFF When Push-To-Start Button Re-Shuts OFF When Push-To-Start Button Re­leasedleased
leased
leasedleased
Check for proper wiring of BK 27 to COMM and GY 26 to NO. If reversed, the washer will shut off when button is released. If wiring is proper, replace machine control board. Line relay may be bad
Start Line Relay Operation).Start Line Relay Operation).
Start Line Relay Operation).
Start Line Relay Operation).Start Line Relay Operation).
Runs For Five Seconds Then Shuts OFF:Runs For Five Seconds Then Shuts OFF:
Runs For Five Seconds Then Shuts OFF:
Runs For Five Seconds Then Shuts OFF:Runs For Five Seconds Then Shuts OFF:
Suspect a communication problem between motor, the motor control board and the ma­chine control board. Check the motor and motor control system by removing the JP4 connector on the motor control board. Set the timer dial into the delay cycle and then press the push to start switch. If the motor operates and the washer goes into a 50 rpm tumble, then the source of the problem is the RD 30 wire leading from the motor control to the P4(2)/RD30 connector on the machine control board. When the machine control tells the motor control to run the motor, it monitors the red wire to determine if the mo­tor is actually running. If the board does not see a return signal, the washer will shut down.
If RD30 wire is making contact, then suspect possible problems with timer input circuits.
(See the following section on Machine Op-(See the following section on Machine Op-
(See the following section on Machine Op-
(See the following section on Machine Op-(See the following section on Machine Op­eration Does Not Match Cycle Description):eration Does Not Match Cycle Description):
eration Does Not Match Cycle Description):
eration Does Not Match Cycle Description):eration Does Not Match Cycle Description):
16008373-01 SECTION 3. TROUBLESHOOTING
::
:
::
- Always shut off- Always shut off
- Always shut off
- Always shut off- Always shut off
(See Section 1: Push-To-(See Section 1: Push-To-
(See Section 1: Push-To-
(See Section 1: Push-To-(See Section 1: Push-To-
© 1998 Maytag Corporation
Washer Runs Five Minutes Then Shuts OFFWasher Runs Five Minutes Then Shuts OFF
During the wash cycle, the machine control communicates with the timer, via the timer in­put circuits. If the machine control board does not see a change in timer inputs over a period of 5 minutes, it will open the line relay and shut the washer off. Check the timer input circuits for poor connections at the timer and the ma­chine control board. Replace timer if neces-
(See Section 2: Timer Input Circuits).(See Section 2: Timer Input Circuits).
sary
(See Section 2: Timer Input Circuits).
(See Section 2: Timer Input Circuits).(See Section 2: Timer Input Circuits).
Shuts OFF In The Middle Of The Spin Cycle:Shuts OFF In The Middle Of The Spin Cycle:
Shuts OFF In The Middle Of The Spin Cycle:
Shuts OFF In The Middle Of The Spin Cycle:Shuts OFF In The Middle Of The Spin Cycle:
During the spin cycle, the machine control monitors the door lock mechanism to ensure the door is locked. This is done through the door lock enable switch. During "lock mode," the shaft of the door lock mechanism is pressed forward by the door lock wax motor, and the shaft presses in the button of the door lock enable switch. If the machine control board sees the switch OPEN during the spin cycle, the machine control board will auto­matically shut the washer OFF. This is caused by a weak spring in the door lock wax motor. Replace the complete door lock mechanism.
Shuts OFF During Final Rinses:Shuts OFF During Final Rinses:
Shuts OFF During Final Rinses:
Shuts OFF During Final Rinses:Shuts OFF During Final Rinses:
The machine control board is programmed to allow a maximum continous fill time of six minutes or an accumulated fill time of 8 min­utes for each full wash cycle. If the required fill time exceeds the time limit, the washer will shut down. This is to prevent flooding in the event there is a loose hose clamp or damaged air dome hose. Check the incoming water lines for a minimum pressure of 20 psi. If lower, the customer can use smaller clothes loads and reduce the pressure to 10 psi. An alterna­tive solution would be to change the plastic inlet screens to metal screened washers and remove the nozzle extender found in the wa­ter valve inlet hose near the dispener inlet.
3-13-1
3-1
3-13-1
::
:
::
Page 36
Tumbles Only:
Excessive Vibration:Excessive Vibration:
Excessive Vibration:
Excessive Vibration:Excessive Vibration:
When the door lock mechanism is in the "locked" mode, the wax motor has extended, forcing the latch axle to engage the door lock enable switch. This ensures the door is fully locked and the switch can then complete the signal back to the machine control board in­dicating the door is locked. Check connector P3(7)/YL 36 wire to verify if the terminal is making good contact to the board terminal. Check the door lock enable switch for conti­nuity when the button is depressed. Replace door lock mechanism if necessary.
ContinuesTo Tumble After The Wash Cycle Is Finished:
Check for a stuck button on the door lock en­able switch in the door lock mechanism. You can verify this at the machine control board by checking for continuity across P3(7)/YL 36 to P3(1)/RD23. If the door is unlocked and there is continuity, the switch button is stuck. At the end of the wash cycle, the machine con­trol monitors the door lock enable switch for disengagement. If the switch is stuck, the washer will continue to tumble till the door unlocks, even though the door is actually un­locked. Replace the door lock mechanism.
Third Rinse Cycle Is Always Cold:Third Rinse Cycle Is Always Cold:
Third Rinse Cycle Is Always Cold:
Third Rinse Cycle Is Always Cold:Third Rinse Cycle Is Always Cold:
If the user rotates the timer dial to the third or fourth rinse, the water will always be cold re­gardless of temperature selection. The ma­chine control board counts the number of rinses through the wash cycle. When the third and fourth rinse are reached, the board will check the rinse temperature selection for proper fill temperature
Temperature Inputs).Temperature Inputs).
Temperature Inputs).
Temperature Inputs).Temperature Inputs).
(See Section 1:Water (See Section 1:Water
(See Section 1:Water
(See Section 1:Water (See Section 1:Water
Ensure that shipping bolts and straps have been removed from the washer. Check the levelness of the washer and ensure the level­ing leg nuts are tightened up against the cabi­net. Check the tightness of the upper and lower weights on the outer tub. Check for loose cabinet screws. Place hand on side of cabinet to determine if vibration noise due to cabinet flex. Apply sound dampening pad to inner cabinet wall if necessary. Check the un­balance circuit and wiring for continuity at the machine control (P2(4) to P3(1). Continuity should be present. If not, check the wiring connections at the strut, outer tub and interial unbalance switches. If a switch is bad or a wire off, the machine control will not know when an unbalance occurs. The machine con­trol board checks the state of the circuit prior to beginning the spin cycle, then monitors the circuit throughout the cycle. If the circuit is OPEN, the board will not see “a change in state” whenever one of the normally-closed switches is activated during an unbalanced load condition.
Machine Operation Does Not Match CycleMachine Operation Does Not Match Cycle
Machine Operation Does Not Match Cycle
Machine Operation Does Not Match CycleMachine Operation Does Not Match Cycle Description:Description:
Description:
Description:Description:
The machine control board monitors where the timer is in the cycle and then uses this in­formation to start different operations, such as drain, fill, tumble and spin. Four input wires from the timer to the machine control board inform the machine control board where the timer is in the wash cycle. However, if one or more of these wires are making an intermittant contact with the machine control board, the board can be “misinformed” and will not re­spond properly.
Check the connections of the timer input wires leading from the timer to the machine con­trol board
Charts). Charts).
Charts). Also, check wiring of all console
Charts). Charts).
switches to ensure no cross-wiring of 24 VDC and 120 VAC circuits.
(See Section 2: Timer Input(See Section 2: Timer Input
(See Section 2: Timer Input
(See Section 2: Timer Input(See Section 2: Timer Input
16008373-01 SECTION 3. TROUBLESHOOTING
© 1998 Maytag Corporation
3-23-2
3-2
3-23-2
Page 37
Door Leaks:Door Leaks:
Door Leaks:
Door Leaks:Door Leaks:
Dispenser Does Not DispenseDispenser Does Not Dispense
Dispenser Does Not Dispense
Dispenser Does Not DispenseDispenser Does Not Dispense
::
:
::
Usually this occurs when the door is re­mounted into the shroud and the technician fully tightens the top hinge screw prior to in­serting the lower screw. The technician should fully seat the door into the shroud evenly prior to tightening the hinge bracket screw into the shroud. Check also for excess plastic flashing in the tab area of the plastic shroud. Care­fully remove the excess flash and remount the boot gasket.
“Thumping” Noise In Spin“Thumping” Noise In Spin
“Thumping” Noise In Spin
“Thumping” Noise In Spin“Thumping” Noise In Spin
The noise could be from loose lower front weight mounting bolts or a loose bolt secur­ing the driven pulley. Check the belt for a weak seam and replace if necessary. Check the motor adjustment bolt for tightness.
"Ticking or Knocking" Noise In Spin"Ticking or Knocking" Noise In Spin
"Ticking or Knocking" Noise In Spin
"Ticking or Knocking" Noise In Spin"Ticking or Knocking" Noise In Spin
The noise could be from a loose wire harness, plastic purse-lock wire harness retainer on upper hose hitting the topcover or a plastic injection mold standoff on the outer tub bear­ing housing may possibly be interfering with the driven pulley.
::
:
::
::
:
::
Examine the siphon cap to see if the cap was twisted, causing the cap to seal the siphon tube against the bottom of the siphon cup. Re­position cap to lift the siphon tube off the bot­tom of the cup. The wax motors are activated a full 30 seconds prior to turning on the water valves. If the timing is not correct, suspect a bad wiring connection. Also, examine the link­age of the acutuator arm and proper location of the spring on the wax motor
6: Water Carrying Components).6: Water Carrying Components).
6: Water Carrying Components).
6: Water Carrying Components).6: Water Carrying Components).
Clothes Wet:Clothes Wet:
Clothes Wet:
Clothes Wet:Clothes Wet:
Possibly due to the washer shutting down too soon or execessive suds present. Did the timer advance to OFF? If yes, then excessive suds may be the cause or the intertial unbalance switch tripped too soon, resulting in lower spin speeds. Change the inertial switch if suds were
Note: Note:
not detected.
ergized for five minutes without the cycle in-ergized for five minutes without the cycle in-
ergized for five minutes without the cycle in-
ergized for five minutes without the cycle in-ergized for five minutes without the cycle in­puts changing, the machine control board willputs changing, the machine control board will
puts changing, the machine control board will
puts changing, the machine control board willputs changing, the machine control board will drop the line voltage relay.drop the line voltage relay.
drop the line voltage relay.
drop the line voltage relay.drop the line voltage relay.
If the timer motor is en-If the timer motor is en-
Note:
If the timer motor is en-
Note: Note:
If the timer motor is en-If the timer motor is en-
(See Section(See Section
(See Section
(See Section(See Section
Also, check the drive belt for a weak spot on the belt. Ussually felt on the backside of the belt as a "flat" spot. Replace the belt.
RF (Radio Frequency) Interference:RF (Radio Frequency) Interference:
RF (Radio Frequency) Interference:
RF (Radio Frequency) Interference:RF (Radio Frequency) Interference:
The interference could occur if the RPT shut­ter on the motor was misaligned or a motor terminal has been pushed inward slightly when the motor harness connector was placed on the motor. Remove the motor phase harness connector and check the motor ter­minals. Replace the motor if the motor teminals are loose.
16008373-01 SECTION 3. TROUBLESHOOTING
© 1998 Maytag Corporation
3-33-3
3-3
3-33-3
Page 38
TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTINGTROUBLESHOOTING
16008373-01 SECTION 3. TROUBLESHOOTING
© 1998 Maytag Corporation
3-43-4
3-4
3-43-4
Page 39
TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTINGTROUBLESHOOTING
16008373-01 SECTION 3. TROUBLESHOOTING
© 1998 Maytag Corporation
3-53-5
3-5
3-53-5
Page 40
TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTINGTROUBLESHOOTING
16008373-01 SECTION 3. TROUBLESHOOTING
© 1998 Maytag Corporation
3-63-6
3-6
3-63-6
Page 41
TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTINGTROUBLESHOOTING
16008373-01 SECTION 3. TROUBLESHOOTING
© 1998 Maytag Corporation
3-73-7
3-7
3-73-7
Page 42
TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTINGTROUBLESHOOTING
16008373-01 SECTION 3. TROUBLESHOOTING
© 1998 Maytag Corporation
3-83-8
3-8
3-83-8
Page 43
TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTINGTROUBLESHOOTING
16008373-01 SECTION 3. TROUBLESHOOTING
© 1998 Maytag Corporation
3-93-9
3-9
3-93-9
Page 44
TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTINGTROUBLESHOOTING
16008373-01 SECTION 3. TROUBLESHOOTING
© 1998 Maytag Corporation
3-103-10
3-10
3-103-10
Page 45
TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTINGTROUBLESHOOTING
16008373-01 SECTION 3. TROUBLESHOOTING
© 1998 Maytag Corporation
3-113-11
3-11
3-113-11
Page 46
TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTINGTROUBLESHOOTING
16008373-01 SECTION 3. TROUBLESHOOTING
© 1998 Maytag Corporation
3-123-12
3-12
3-123-12
Page 47
TROUBLESHOOTINGTROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTINGTROUBLESHOOTING
Use a knife or scissors to cut across the + in the center of the dial and press the template over the timer shaft. Align the template with the OFF indicators of the Quick Wash and Regular wash on the facia. Press the timer knob onto the timer shaft.
16008373-01 SECTION 3. TROUBLESHOOTING
© 1998 Maytag Corporation
3-133-13
3-13
3-133-13
Page 48
MISCELLANEOUS INFORMATIONMISCELLANEOUS INFORMATION
MISCELLANEOUS INFORMATION
MISCELLANEOUS INFORMATIONMISCELLANEOUS INFORMATION
Energy UsageEnergy Usage
Energy Usage
Energy UsageEnergy Usage
The energy usage averages up to 0.10 Kwh per cycle, when using the Regular cycle with Nor­mal wash. Peak amperage is 7.5 amps during acceleration to high speed spin, with nominal running amperage at a maximum of 5.0 amps.
Washer WattagesWasher Wattages
Washer Wattages
Washer WattagesWasher Wattages
The following wattages are approximate and without clothes:
Function:Function:
Function:
Function:Function:
Delay 10-15 Tumbling (empty) & water fill 50-70 Tumbling (Full-Wash level) 110-120 Tumbling (Full-Rinse Level) 140-150 Draining (No tumble) with water 45-50 Draining (No tumble) no water 30-35 Spinning (100 rpm) 85-90 Spin Acceleration (100-200 rpm) 130-150 Spinning (400 rpm) 160-170 Spinning (850 rpm) 400-410
::
:
::
::
:
::
Wattages:Wattages:
Wattages:
Wattages:Wattages:
16008373-01 SECTION 3. TROUBLESHOOTING
© 1998 Maytag Corporation
3-143-14
3-14
3-143-14
Page 49
SECTION 4. CONSOLESECTION 4. CONSOLE
SECTION 4. CONSOLE
SECTION 4. CONSOLESECTION 4. CONSOLE
Warning Warning
Warning
Warning Warning
electrical power to the unitelectrical power to the unit
electrical power to the unit
electrical power to the unitelectrical power to the unit before beginning any servicebefore beginning any service
before beginning any service
before beginning any servicebefore beginning any service procedure.procedure.
procedure.
procedure.procedure.
REMOVALREMOVAL
REMOVAL
REMOVALREMOVAL
Disconnect power to the unit.Disconnect power to the unit.
1.
Disconnect power to the unit.
Disconnect power to the unit.Disconnect power to the unit.
- Always shut off- Always shut off
- Always shut off
- Always shut off- Always shut off
2 . Remove the three screws securing the con-
sole rear cover plate across the rear top edge of the console
ConsoleConsole
Console
ConsoleConsole
MountingMounting
Mounting
MountingMounting
ScrewsScrews
Screws
ScrewsScrews
(Figure 4-1)(Figure 4-1)
(Figure 4-1)
(Figure 4-1)(Figure 4-1)
..
.
..
5 . Push the bottom of the console toward
the back panel to disengage the six lock­ing feet from the top cover
Figure 4-3Figure 4-3
Figure 4-3
Figure 4-3Figure 4-3
(Figure 4-3)(Figure 4-3)
(Figure 4-3).
(Figure 4-3)(Figure 4-3)
6 . Carefully lift and roll the console forward
onto the top cover. You now have access to the console components and wiring
(Figure 4-4).(Figure 4-4).
(Figure 4-4).
(Figure 4-4).(Figure 4-4).
Figure 4-1Figure 4-1
Figure 4-1
Figure 4-1Figure 4-1
3 . Lay a drop cloth across the top cover of the
washer.
4. Grasp the top of the console and gently rock the top forward (
Figure 4-2Figure 4-2
Figure 4-2
Figure 4-2Figure 4-2
Figure 4-2Figure 4-2
Figure 4-2).
Figure 4-2Figure 4-2
Figure 4-4Figure 4-4
Figure 4-4
Figure 4-4Figure 4-4
To Reinstall: To Reinstall:
7.
To Reinstall: Roll the console back into
To Reinstall: To Reinstall: an upright position, engaging the locking feet into the slots in the top cover. Re­place the three screws to attach console back to rear panel.
16008373-01 SECTION 4. CONSOLE
© 1998 Maytag Corporation
4-14-1
4-1
4-14-1
Page 50
VERTICAL SWITCHESVERTICAL SWITCHES
VERTICAL SWITCHES
VERTICAL SWITCHESVERTICAL SWITCHES (Push Button)(Push Button)
(Push Button)
(Push Button)(Push Button)
REMOVALREMOVAL
REMOVAL
REMOVALREMOVAL
HORIZONTAL SWITCHESHORIZONTAL SWITCHES
HORIZONTAL SWITCHES
HORIZONTAL SWITCHESHORIZONTAL SWITCHES (Push-to-Start)(Push-to-Start)
(Push-to-Start)
(Push-to-Start)(Push-to-Start)
REMOVALREMOVAL
REMOVAL
REMOVALREMOVAL
Depress the tab at the top of the switch with a screwdriver to disengage the tab from the console. Pivot the switch away from the console to remove
REPLACEMENTREPLACEMENT
REPLACEMENT
REPLACEMENTREPLACEMENT
(Figure 4-5)(Figure 4-5)
(Figure 4-5).
(Figure 4-5)(Figure 4-5)
Align the rib on the bottom of the switch with the slot in the console. Pivot the switch up into the console until the tab engages the console securely. Check that the locating tabs on either side of the switch's lower alignment rib are in position to properly center and lock the switch into the lower part of the switch opening.
Align the Center RibAlign the Center Rib
Align the Center Rib
Align the Center RibAlign the Center Rib on the bottom of theon the bottom of the
on the bottom of the
on the bottom of theon the bottom of the Switch with the Slot inSwitch with the Slot in
Switch with the Slot in
Switch with the Slot inSwitch with the Slot in the Cup on the Bottomthe Cup on the Bottom
the Cup on the Bottom
the Cup on the Bottomthe Cup on the Bottom of the Switch Openingof the Switch Opening
of the Switch Opening
of the Switch Openingof the Switch Opening on the Consoleon the Console
on the Console
on the Consoleon the Console
Depress the locking tab on the switch to disengage it from the locking tab on the console. Pivot the switch from the console
(Figure 4-6).(Figure 4-6).
(Figure 4-6).
(Figure 4-6).(Figure 4-6).
REPLACEMENTREPLACEMENT
REPLACEMENT
REPLACEMENTREPLACEMENT
Position one side into the console and pivot the other tab into the console and apply enough pressure to engage the tab into the console.
Locking Tab
Locking Tab
Screwdriver
Figure 4-5Figure 4-5
Figure 4-5
Figure 4-5Figure 4-5
Pivoting thePivoting the
Pivoting the
Pivoting thePivoting the Switch Body, LockSwitch Body, Lock
Switch Body, Lock
Switch Body, LockSwitch Body, Lock it in at the Top ofit in at the Top of
it in at the Top of
it in at the Top ofit in at the Top of the Openingthe Opening
the Opening
the Openingthe Opening on the Console.on the Console.
on the Console.
on the Console.on the Console.
Locking Tab
Figure 4-6Figure 4-6
Figure 4-6
Figure 4-6Figure 4-6
Locking Tab
Carefully DepressCarefully Depress
Carefully Depress
Carefully DepressCarefully Depress
Locking Tab onLocking Tab on
Locking Tab on
Locking Tab onLocking Tab on
Switch to DisengageSwitch to Disengage
Switch to Disengage
Switch to DisengageSwitch to Disengage
From ConsoleFrom Console
From Console
From ConsoleFrom Console
16008373-01 SECTION 4. CONSOLE
© 1998 Maytag Corporation
4-24-2
4-2
4-24-2
Page 51
TIMER REMOVALTIMER REMOVAL
TIMER REMOVAL
TIMER REMOVALTIMER REMOVAL
Disconnect power to the unit.Disconnect power to the unit.
1.
Disconnect power to the unit.
Disconnect power to the unit.Disconnect power to the unit.
REPLACEMENTREPLACEMENT
REPLACEMENT
REPLACEMENTREPLACEMENT
2 . Carefully lift the timer knob and dial off
the timer shaft by pulling the knob away from the face of the control console
(Figure 4-7).(Figure 4-7).
(Figure 4-7).
(Figure 4-7).(Figure 4-7).
Figure 4-7Figure 4-7
Figure 4-7
Figure 4-7Figure 4-7
3. Disengage the console assembly from the top cover and roll forward
Console Removal)Console Removal)
Console Removal).
Console Removal)Console Removal)
(See(See
(See
(See(See
1 . Align the three tabs of the timer into the
slots of the console.
2 . Insert the timer into the slots and
slightly lift the locking tab of the timer. Slide the timer away from the endcap until the locking tab can engage with the square hole in the console.
3. Replace mounting screw.
4. Remove timer mounting screw on back of timer in the console.
5 . Slightly lift the locking tab on the back of
the timer
6 . With the locking tab lifted, slide the timer
body toward the end cap of the console. This will disengage the retaining tabs of the timer from the slots in the console.
7 . Lift the timer away from the console.
(Figure 4-8).(Figure 4-8).
(Figure 4-8).
(Figure 4-8).(Figure 4-8).
Figure 4-8Figure 4-8
Figure 4-8
Figure 4-8Figure 4-8
16008373-01 SECTION 4. CONSOLE
© 1998 Maytag Corporation
4-34-3
4-3
4-34-3
Page 52
16008373-01 SECTION 4. CONSOLE
© 1998 Maytag Corporation
4-44-4
4-4
4-44-4
Page 53
SECTION 5. CABINET ASSEMBLY
Warning
- Always shut off electrical power to the unit before beginning any ser­vice repair procedures.
DOOR ASSEMBLY & HINGES
The door assembly is reversible. It contains an inertial vibration damper comprised of a steel plate suspended with springs. The damper is designed to tune out excessive vi­brations generated by the machine during the spin cycle. Replacement inner door liners are shipped with the vibration damper in place.
REMOVAL
1. Open the door and remove the center screw of each hinge secured to the inner flange of the front panel in the door opening.
Figure 5-1
REVERSAL
1. Repeat the above steps and, remove the corresponding sheet metal spacers on the opposite side.
2. Remove the hinges from the door and re­locate them to the other side of the door.
3. Remount the door into the new slots and secure with one screw into each hinge.
2. Grasp the door with both hands and lift the hinge area slightly. Draw the door as­sembly away from the machine. This will disengage the hinges from the slots in the front shroud bind, press out on the plastic shroud near the hinge toward the cabinet.
16008373-01 SECTION 5. CABINET ASSEMBLY
(Figure 5-1).
If the hinges
4. Mount the sheet metal spacers onto the side where the hinges were previously to cover the hinge slots in the front shroud.
DISASSEMBLY
1. Remove ten screws located across the bot­tom and along either side of the door panel. The top edge of the outer panel is folded over the inner door plug.
2. With the outer door panel removed, the stabilizer is exposed and is attached to the inner door plug.
5-1
Page 54
Cabinet Vibration Absorber
The purpose of the cabinet vibration absorber is to provide a dampening effect to the washer during the spin cycle. By dampening the machine vibration, the washer is able to main­tain and achieve optimum spin performance. The stabilizer is attached to the inner door plug with two screws.
Door Latch Hoop
Inner Door Liner
2. Open the door and remove the four screws along the inside lip of the door opening. The two that are located vertically, on ei­ther side of the door opening, secure the front panel to the front shroud assembly
(Figure 5-3)
. Care should be taken when
opening and closing the door with the screws removed.
3. Remove the door.
Cabinet Vibration Absorber
Figure 5-2
Door Latch Hoop
The door latch hoop is snapped into the door liner. A spring retains the hoop in the proper position to align with the door lock mecha­nism when the door is closed. A plastic sup­port is snapped into place over the latch hoop at add strength
(Figure 5-2).
FRONT PANEL
Figure 5-3
4. To remove the front panel, open the door, twist the upper right and left panel exten­sions inward by pressing in on the outer upper edges of the front panel posts. This will disengage the front panel posts from clips located on the face of the cabinet flange
(Figure 5-4)
.
5. Tilt the top of the front panel away from the washer. Then, remove the front panel
(Figure 5-4)
.
REMOVAL
Figure 5-4
1. Disconnect power to the unit.
16008373-01 SECTION 5. CABINET ASSEMBLY
5-2
Page 55
TOP COVER
DOOR LOCK MECHANISM
REMOVAL
1. Remove the front panel
Removal)
.
(See Front Panel
2. Remove the four screws fastening the dis­penser bezel to the top of the top cover
(See Dispenser Assembly)
.
3. Remove two 5/16" hex head screws secur­ing the two hold down brackets on the top cover
(Figure 5-5)
.
4. To remove the hold down brackets, swing the bracket to the outside to unhook the bracket from the slot in the top cover lip
(Figure 5-6)
.
5. If the door is still positioned on the front shroud, open the door prior to lifting the front of the top cover and tilt the top cover toward the rear of the machine.
The purpose of the door lock mechanism is to secure the door during the spin cycle. When the door is shut, the wire loop on the door engages the rotating gear in the door lock mechanism
(Figure 5-7)
. When the proper water level is reached and the pres­sure switch is satisfied, 120 VAC is applied to the wax motor. The piston in the wax motor will extend, pushing the latch axle and sliding gear from left to right. Teeth on the face of the sliding gear will intermesh with the teeth on the side of the rotating gear (normally takes about 45-60 seconds). This interlocking of teeth provides the locking action of the lock mechanism.
At the end of the spin cycle, when tumbler speed drops below 90 RPM, voltage is no longer applied to the wax motor. The wax motor will cool and relax the piston on the wax motor. The latch axle and sliding gear are then pulled from right to left, disengaging the teeth of the sliding gear from the rotating gear (normally takes 1 - 1½ minutes). This al­lows the rotating gear to be in a position to rotate if necessary, should the door be opened.
Rotating
Wax Motor
Accessory Cable
Latch Axle
Axle Spring
Figure 5-5
16008373-01 SECTION 5. CABINET ASSEMBLY
Figure 5-6
Sliding Gear
Door Switch
Ramp
Cover
Figure 5-7
Gear
Spring
Gear Return Spring
Door Lock Switch
Lamp Holder
Latch Switch Holder
Bulb
5-3
Page 56
Two switches in the door lock mechanism in­form the machine microprocessor control when the door is latched shut and when the door is securely locked. For more informa­tion, refer to section on
Electrical-Mechanical
Troubleshooting.
An emergency access cord (filament) is at­tached to the sliding gear, should the wax motor fail in the extended position and entry into the washer is necessary. To gain access to the cable, removal of the dispenser bezel is necessary. Once removed, the cable is ex­posed. By carefully applying both a steady pull of the access cord and opening force to the door, the wax motor is overridden and the sliding gear is pulled from right to left away from engagement with the rotating gear. Thus, allowing the rotating gear to release the wire loop of the door.
NOTE:
When the cord is released, the lock
will return to a locked position (Figure 5-8).
REMOVAL
1. Remove the front panel and raise the top cover to expose the door lock mechanism
(See Front Panel & Top Cover).
Emergency Access Cord
Mounting Screws
Figure 5-8
FRONT SHROUD ASSEMBLY
The shroud assembly ties the sides of the cabinet together across the front for stabil­ity and provides support for mounting of the door assembly, front panel and door lock mechanism. To gain access to components behind the front shroud, the assembly can be removed as a whole assembly and lifted onto the top of the washer. This will allow access to the tub cover, spin basket, sump area and etc..
REMOVAL
2. Remove the wires from the lock switches, wax motor and light fixture.
3. Remove light.
4. Remove two 5/16" hex-head screws secur­ing the switch support to the metal shroud support
16008373-01 SECTION 5. CABINET ASSEMBLY
(Figure 5-8).
1. Remove the front panel and raise the top cover to expose the front shroud assem­bly
(See Front Panel & Top Cover).
2. With the door open, unsnap the boot gas­ket from around the inside perimeter of the door opening by pulling out on the sealing lip of the gasket
(Figure 5-9).
5-4
Page 57
Figure 5-9
CABINET ASSEMBLY w/REAR ACCESS PANEL
Removal of the access panel gains access to the rear components of the washer
(Figure 5-11)
.
3. Remove the door
(See Door Assembly and
Hinge Removal).
4. Removal and replacement of the screws in the following order, as illustrated, is nec­essary to provide proper alignment of the parts. Failure to do so will hinder removal and replacement of the shroud onto the cabinet
(Figure 5-10)
.
Figure 5-11
REMOVAL
Remove the four hex-head screws surround­ing the access panel
Spacer
(Figure 5-12)
.
Figure 5-10
Screws
5. Place a soft cloth over the top of the con­crete weight. Carefully lift and stand the
Access Panel
shroud assembly on top of the tub. The assembly can lean back against the top
Figure 5-12
cover. The wire harness on the left side of the upper cabinet is long enough to do this. When replacing the shroud, be sure to tuck the harness inside the upper flange of the top cover to keep the wires from being pinched and damaged.
16008373-01 SECTION 5. CABINET ASSEMBLY
5-5
Page 58
16008373-01 SECTION 5. CABINET ASSEMBLY
5-6
Page 59
SECTION 6. WATER-CARRYING COMPONENTS
5. While pulling the bracket away from the
Warning
- Always shut off electrical power to the unit before beginning any ser­vice repair procedures.
cabinet, rotate the left side of the bracket away from the washer.
6. Remove the wire harness from the water valve coils (Blue & White wires - Cold; Or­ange & White wires - Hot) and remove the clamp from the injector hose.
WATER VALVE
The water valve is accessible from the front or rear of the machine.
REAR REMOVAL
1. Disconnect power to the unit.
2. Shut off the water to the inlet hoses and remove the hoses from the water valve connections of the washer.
3. Remove the two ¼" hex head screws se­curing the water valve bracket to the cabi­net
(Figure 6-1).
Injector Hose
Mounting Screws
7. Remove two 5/16" hex head screws secur­ing the valve to the mounting bracket.
FRONT REMOVAL
1. Disconnect power to the unit.
2. Shut off the water supply to the inlet hoses.
3. Remove the front panel.
4. Remove dispenser bezel and raise the top cover to expose the upper rear cabinet area
(See Front Panel & Top Cover Removal).
5. Remove the wire harness from the water valve coils (blue & white wires - cold; or­ange & white wires - hot) and remove the clamp from the injector hose. When the
valve is replaced, the hot water valve coil is on the left.
6. Remove the two 5/16" hex head screws se-
Water Valve
Mounting Bracket
Mounting Screws
curing the water valve bracket to the cabinet.
7. Carefully lift the valve and direct the inlet hoses through the openings in the rear mounting bracket.
Figure 6-1
8. Remove the inlet hoses from the water
4. While pulling the lower end of the bracket down slightly, slide the bracket to the left. This will allow the injector hose to clear the rear cabinet opening.
16008373-01 SECTION 6. WATER CARRYING COMPONENTS
valve connections. If possible, clamp the
hoses shut and/or have a towel handy in case of overspray when water pressure is relieved.
6-1
Page 60
WATER LEVEL PRESSURE SWITCH
The water pressure switch is located in the console area and mounted to a galvanized bracket secured to the rear panel of the con­sole. The air dome hose is inserted into the lower end of the mounting bracket
6-2)
. The nipple of the pressure switch is in­serted into the end of the air dome hose which is secured by the lower mounting bracket.
Bracket
Pressure Switch
A) Slide Switch Off
(Figure
7. To replace, insert air dome hose into the bracket. Insert the pressure switch nipple into the air dome hose. Press the pres­sure switch into the bracket until it "snaps" into place.
AIR DOME HOSE
The air dome hose connects the pressure switch to the air dome located in the sump area of the outer tub. Routing of the air dome hose passes from the console down the rear wall of the cabinet to the rear sump area of the outer tub. Two holding clips retain the air dome hose to the cabinet away from the belt and pulley.
B) Rotate Switch
Air Dome Hose
Figure 6-2
REMOVAL
1. Disconnect power to the unit.
2. Remove the console
Removal)
.
(See Console
3. Slide the pressure switch up, away from the air dome hose.
4. Remove wire harness from the pressure switch.
5. Rotate the pressure switch 90 degrees to disengage locking tabs on the back of the switch from the mounting bracket.
REMOVAL FROM CONSOLE
1. Disconnect power to the unit.
2. Remove the console
(See Console
Removal).
3. Slide the pressure switch up on the mount­ing bracket, away from the air dome hose. The mounting bracket for the pressure switch is secured to the rear panel of the console
(See Figure 6-2).
4. Pull the air dome hose down through the top cover opening.
REMOVAL FROM OUTER TUB
1. Disconnect power to the unit.
2. From behind the outer tub, slide off the retainer clip securing the air dome hose to the rear spout of the outer tub.
6. The mounting bracket for the pressure switch is secured to the rear console panel with one screw.
16008373-01 SECTION 6. WATER CARRYING COMPONENTS
3. Remove one of the rear baffles.
4. Grasp and lift the airdome hose from the sump area
(See Figure 6-3).
6-2
Page 61
5. Pull the air dome and hose out through the sump opening in the spin basket
(Figure
6-3).
5. Remove all slack in the hose between the upper and lower clips holding the air dome hose. This reduces the potential for noise.
REPLACEMENT/ROUTING
1. Thread the narrow end of the hose through the air dome outlet in the rear of the outer
(Figure 6-3).
tub cate the hose to ease insertion into the outer tub air dome outlet.
NOTE:
Using soap and water may lead to a
potential leak.
Sump Opening Exposed
Air Dome Outlet
Apply alcohol to lubri-
Spin Basket
Rear Baffle Removed
6. Route the air dome hose into the center rear hole in the top cover. Route toward the pressure switch and secure the hose to the pressure switch.
DISPENSER ASSEMBLY
The dispenser assembly is located in the left hand side of the top cover. Three bays dis­pense the fabric softener, bleach and deter­gent into the wash load. A double wax motor mechanism directs the flow of water into each specific bay when required for disbursement into the wash load. When a specific fluid is required, the water is directed into that bay. As water fills the bay, the fluid level rises. When the fluid reaches a specific height, it is siphoned out into the dispenser injector hose to the wash load.
Figure 6-3
2. Secure the retainer clip on the outside ridge of the air dome hose.
3. Push the bent end of the air dome down into the sump area, below the spin basket, making sure the flat rubber tab on the air dome is down inside the drain sump opening.
4. The air dome hose is retained to the rear wall of the cabinet with two clips.
NOTE:
A silver indicator mark is located approximately 20 inches away from the air dome. The indicator mark must be located under the lower clip to allow the correct amount of slack in the hose.
Wax Motors
Siphon Cap
Siphon Cup
Linkage
Dispenser Top
Rotary Nozzle
Dispenser Bottom
Figure 6-4
REMOVAL
1. Disconnect power to the unit.
2. Remove the siphon cup and cap.
3. Remove the four screws securing the dis­penser bezel and assembly to the top cover.
16008373-01 SECTION 6. WATER CARRYING COMPONENTS
6-3
Page 62
4. Remove the front panel and top cover
(See
Front Panel & Top Cover Removal).
5. Disconnect the hoses attached to the dis­penser assembly.
6. While lifting, rotate the dispenser assem­bly 90 degrees in a counterclockwise direction.
The two tabs on the side wall of the
NOTE:
dispenser bottom may break off if the above procedure is not followed properly.
5. Remove the hose clamp and injector hose from the spout on the front upper area of the outer tub.
6.In order to provide sufficient space to re­move the injector, place a 5/8" - 3/4" wedge between the spinner and the outer tub.
7. Pinch the two tabs exposed on the outer edge of the outer tub spout and press the injector into the tub. Reverse the previ­ous steps to replace the injector.
PUMP ASSEMBLY
FRONT WATER FLUME INJECTOR
As water is filling the dispenser assembly, water is also diverted to a hose leading to the front of the outer tub. As the water enters the top of the outer tub through the hose, it passes through a water flume. The flume directs the wa­ter toward the front of the tub to saturate the clothes load.
Figure 6-5
REMOVAL
1. Disconnect power to the unit.
2. Remove the front panel and raise the top cover to expose the upper front cabinet area
Removal).
(See Front Panel & Top Cover
The pump assembly is mounted to the right rear area of the base.
REMOVAL
1. Disconnect power to the unit.
2. Spread a towel below the drain hoses prior to loosening the hose clamps. This will catch any residual water left in the hoses and sump area.
3. Remove the hose clamps and hoses from the pump.
4. Remove the wiring harness from the pump motor terminals.
5. Rotate the pump assembly in a counter­clockwise direction. The support legs of the pump are slotted to engage in keyed slots in the base. Reverse the steps to re­mount the pump.
3. Remove the front shroud assembly
Front Shroud Assembly Removal)
4. Remove the outer tub cover
(See Outer
(See
.
Tub Cover Removal).
16008373-01 SECTION 6. WATER CARRYING COMPONENTS
6-4
Page 63
Figure 6-6
CLEANING THE PUMP
Figure 6-7
The pump assembly can also be disassembled without removing the hoses from the pump
(See Figure 6-6).
1. Depress the locking tab on the face of the pump housing.
2. Rotate the block portion of the pump con­taining the motor windings toward the front of the washer. This will disengage the locking tabs of the pump housing from the pump face.
3. Carefully remove the pump body away from the housing. The drain impeller is exposed for cleaning.
Pump Accessory Kit
1. Disconnect power to the unit.
4. Position the second pump near the first pump and connect the accessory connec­tor to the sump intake of the second pump. Secure with the clamp in the kit.
5. Connect the drain hose to the drain outlet of the second pump. Secure with a clamp.
6. The second pump assembly is not secured to the washer's base frame.
7. Installation is complete.
2. Disconnect the drain hose from the exist­ing pump in the washer.
3. Attach the accessory connector to the pump drain outlet and secure with the clamp found in the kit.
Figure 6-8
16008373-01 SECTION 6. WATER CARRYING COMPONENTS
6-5
Page 64
DRAIN HOSE
The drain hose attaches to the pump and is routed through the lower rear wall of the cabi­net. The drain hose is protected externally by a shield.
REMOVAL
1. Disconnect power to the unit.
Drain Hose Access Cover
2. Remove the four ¼" hex head screws se­curing the access panel to the rear wall of the cabinet.
3. Remove the ¼" hex head screw securing the drain hose shield. Remove shield.
4. With access into the machine compart­ment, spread a towel under the connec­tion of the drain hose to the pump. Loosen the clamp and remove the drain hose
(Fig-
ure 6-10).
5. Reverse the previous steps for replacement.
Figure 6-9
Clamp
Drain Hose
Figure 6-10
16008373-01 SECTION 6. WATER CARRYING COMPONENTS
6-6
Page 65
16008373-01 SECTION 6. WATER CARRYING COMPONENTS
6-7
Page 66
SECTION 7. OUTER TUB & SPINNER ASSEMBLY
Warning
- Always shut off electrical power to the unit before beginning any ser­vice repair procedures.
BAFFLES
The baffles in the spin basket distribute and redistribute the clothes during the tumbling action of the washer.
REMOVAL
1. Disconnect power to the unit.
2. The three rear baffles within the spin bas­ket are removed by removing the two crosshead screws securing each baffle from inside the spin basket.
3. The three front baffles within the spin bas­ket are removed by removing the two ¼" hex head screws from outside of the spin basket. To gain access, remove the outer tub cover. The front baffle mounting screws can now be reached through the sump area, using a flat ratchet with a ¼" drive socket.
REMOVAL
1. Disconnect power to the unit.
2. Remove the front panel, top cover and front shroud
(See Front Panel, Top and
Front Shroud Removal).
3. Using one of the two hold down brackets
(See Figure 5-6)
support springs, grasp the hook of the boot clamp spring. With the other hand, press the wire loop into the door boot. This will brake the wire into the door boot and not allow the wire to slip.
NOTE:
Be careful not to bend or crease the
or one of the two front
wire loop. If the wire loop becomes bent, the result will be a potential leak upon replace­ment of the boot seal onto the outer tub cover.
4. Pull the boot clamp spring hook toward the wire loop and disengage the spring from the wire loop.
5. Carefully remove the wire loop from the lip of the outer tub cover.
NOTE:
Note the orientation ribs on the outer tub cover and the locating notches in the door boot seal lip.
DOOR BOOT
Locking
The door boot rubber gasket provides a seal between the outer tub assembly and the front shroud. The boot seal is secured to the front shroud by locking tabs on the boot seal, which engage with slots in the shroud. Attachment to the outer tub is by a wire loop stretched around the perimeter of the opening in the outer tub cover and secured with a spring.
16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY
Tabs
Boot Gasket
Door Shroud
Figure 7-1
7-1
Page 67
16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY
7-2
6. Unsnap the locking tabs of the door boot around the inside perimeter of the door shroud
(Figure 7-1).
REPLACEMENT
1. Align the door boot with the D-shape to­ward the front, with the flat of the D to­ward the bottom. Also, locate the large tab toward the top center of the shroud.
2. Stretch the rear lip of the door boot onto the tub cover.
3. Move the rear door boot lip along the face of the tub cover until the locator notches in the door boot align with the locator ribs in the tub cover. Check alignment of the six rib marks and reposition if necessary. This is necessary in order to have the lock­ing tabs on the inside perimeter of the door boot align with the corresponding tabs on the front shroud.
4. Carefully loop the wire loop with spring around the lip of the outer tub cover and place the spring at the 11:00 o'clock posi­tion, just left of the top rib of the outer tub cover. Hook the end of the spring over the nearest tub cover clip to hold the spring and wire in position for final hookup to the other end of the wire loop.
5. Using either the hold down bracket or the outer tub spring, grasp the hook end of the spring and apply pressure on the clamp wire into the door boot.
6. Pull the spring hook toward the wire loop to engage the spring with the wire loop.
NOTE:
Be careful not to bend or crease the wire loop. If the wire loop becomes bent, the result will be a potential leak upon replace­ment of the boot seal onto the outer tub cover.
OUTER TUB COVER
The outer tub cover has a gasket seal em­bedded in the outer flange of the cover to seal the cover to the outer tub. The cover is secured to the outer tub by means of twelve (12) locking clips evenly spaced around the perimeter of the cover. When the outer tub cover is removed, access to the sump area and the front injector flume is possible.
REMOVAL
1. Disconnect power to the unit.
2. Remove the front panel, top cover and front shroud
(See Front Panel, Top
Cover, and Front Shroud Removal).
3. Using a flathead screwdriver, slide un­der the clip and pry to remove. Remove the remaining clips from the outer tub cover.
4. Remove the cover from the outer tub. This exposes the sump area on the floor of the outer tub and the water injector flume on top of the outer tub.
7. Reposition the front shroud on the front of the washer and secure
(See Front
Shroud).
8. Pull the front edge of the door boot and locate the widest locking tabs, located at the 12, 4 & 8 o'clock positions. Insert the locking tabs into the large interlock­ing slots in the shroud. (Spraying the surface with window cleaner or a soap solution aids reinsertion of the tabs into the plastic front shroud.) Press the thick rubber section of the door boot into the groove in the shroud so the locking tabs engage in the slots.
9. Press the remaining locking tabs into the perimeter of the shroud.
Page 68
REMOVAL
1. Disconnect power to the unit.
2. Remove the front panel, top cover, front shroud, outer tub cover and rear baffles
(See Front Panel, Top cover, Front Shroud, Outer Tub Cover and Rear Baffle Removal).
Figure 7-2
SPIN BASKET ASSEMBLY w/BALANCE RING
The balance ring is securely fastened to the spin basket and cannot be obtained as a sepa­rate repair part. To obtain, order complete spin basket assembly. The balance ring is filled with a calcium chloride solution and baffles.
3. To separate the spinner tub support from the spinner, remove the three rear baffles within the spin basket by removing the two screws securing each baffle
Removal)
4. Remove the three locking type nuts (½" socket) securing the spin basket to the spi­der assembly
.
(Figure 7-5).
(See Baffle
Figure 7-4
Figure 7-3
within the ring allow the fluid to disperse within the ring evenly. By rotating the spin basket, you can hear the fluid dispersing within the baffles of the balance ring. This sound is normal.
The spin basket is mounted to the spinner sup­port by means of threaded studs on the sup­port extending through the spin basket and secured with nuts. The mounting nuts are concealed under the rear baffles
16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY
(Figure 7-4).
7-3
Page 69
Spinner Support Washer
Profile Washer
Locking Nut
Figure 7-5
5. Remove the spin basket by lifting it off the threaded bolts of the spinner support.
6. When replacing the spin basket onto the spinner support, replace the washers un­der the three locking type nuts. Secure the ½" nuts firmly (18 in. lbs. torque).
DRIVE PULLEY
The drive pulley can be accessed via the rear access panel of the washer. The pulley is se­cured to the shaft of the spider assembly by a bolt. The direction of pulley rotation controls the spin action of the spin basket.
1. Disconnect power to the unit.
Figure 7-6
REPLACEMENT
1. Slide pulley on shaft.
2. Insert new tabbed washer and secure the bolt with a 9/16" socketed ratchet wrench (30 in. lbs. torque).
NOTE:
If the washer is cupped, flip the washer on the pulley so the cupped portion extends away from the shaft. Failure to do so can result in a binding of the spinner sup­port shaft and seals
.
2. Remove the rear access panel from the washer to access the pulley area.
3. Remove the bolt and the spider shaft will be exposed. Carefully slide the pulley off the spider shaft, using a "rocking/side-to­side" motion. If the pulley has a snug fit, use your Spanner Wrench to apply enough leverage to pry the pulley off the shaft
(Figure 7-6).
16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY
7-4
Page 70
SPINNER TUB SUPPORT
The spinner tub support attaches to the spin basket and the shaft of the spider extends through a seal system to the exterior of the outer tub with a pulley attached to the end of the shaft
(Figure 7-7)
pulley directly to the rotation of the spin basket.
NOTE:
When the spinner tub support is removed, the shaft seal system should be replaced.
. This assembly supports the spin basket and transfers the rotation of the drive
Plastic Washer
Seal
Spacer Sleeve
Spin Basket
(See Figure 7-5)
Spinner Support
Figure 7-7
REMOVAL
1. Disconnect power to the unit.
2. Remove the front panel, top cover, front shroud and outer tub cover
(See Front Panel, Top
Cover, Front Shroud and Outer Tub Cover Removal).
3. Remove the drive pulley
(See Pulley Removal).
4. With the pulley removed, the spin basket with the spider shaft can be pulled from the front
of the outer tub assembly.
5. To separate the spinner tub support from the spinner, remove the three rear baffles within
the spin basket by removing the two screws securing each baffle
(See Baffle Removal).
6. Remove the three locking nuts (½" socket) securing the spin basket to the spider assembly.
7. Remove the shaft seal
(Figure 7-8).
REPLACEMENT
1. Reverse the previous steps.
2. IMPORTANT:
Secure the three locking nuts (½" socket) on the spinner tub support studs
(18 in. lbs. torque).
16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY
7-5
Page 71
16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY
7-6
SEAL SYSTEM
A multi-lipped water seal is positioned on the tub support shaft leading to the outer tub bear­ing. This prevents water inside the tub from reaching the bearings. The water seal is ac­cessed by removing the tub support shaft. It is comprised of a stainless steel seal face po­sitioned on the tub support shaft, which mates with a rubber gasket. Grease on the face of the rubber gasket provides lubricant for the steel seal face. The steel seal face provides the rotating seal surface against the circular rubber ribs in the face of the rubber seal. This makes for three rib contacts at various diam­eters, providing three seals.
REMOVAL
1. Disconnect power to the unit.
2. Remove the spinner tub support with spin­ner
(See Spinner Tub Support Removal).
3. With a flathead screwdriver, pry the seal carefully off the tub support shaft
(Figure
7-8).
4. Reach inside the outer tub bearing area and remove the rubber seal. Discard both the steel seal washer and the rubber seal
(Figure 7-9).
5. Position the spacer, replacement rubber seal and steel seal washer into the outer tub bearing area.
6. Position the spinner with spinner support shaft into the outer tub and insert the shaft through the seal in the rear of the outer tub until the spinner support shaft seats into place.
7. Reposition the drive pulley with tabbed washer onto the spinner support shaft. Insert the retaining bolt and tighten se­curely (30 in. lbs. torque). This will draw the shaft and seals into proper alignment.
Figure 7-9
Figure 7-8
Page 72
OUTER TUB ASSEMBLY
The outer tub assembly is suspended from two springs positioned toward the upper front of the cabinet and supported in the rear by two struts which are secured to the base frame. Two counter weights are mounted to the outer tub from above and below the tub. The alu­minum bearing housing retains both inner and outer bearings for the spinner tub support shafts.
Front Water Flume
Upper Weight
REMOVAL OF UPPER WEIGHT
1. Disconnect power to the unit.
2. Lift top cover
(See Top Cover).
3. Remove the two ½" counter balance bolts
securing the weight to the top of the outer tub assembly.
NOTE:
The bolts screw into two nuts below the weight, under the tub mounting pad (Fig­ure 7-11).
Counter Balance Bolt
Upper Weight
Nut
Displacement Switch
Figure 7-10
BEARINGS
The bearings are not repairable or replaceable. Replacement of the complete outer tub as­sembly is required.
COUNTER WEIGHTS
Two counter weights are secured to the outer tub assembly. One is secured to the top of the tub assembly and the other is secured to the bottom of the tub assembly.
Figure 7-11
REMOVAL OF LOWER FRONT WEIGHT
1. Remove the front panel
(See Front Panel).
2. Remove the two bolts securing the weight
to the outer tub assembly. Use a 9/16" socket
(Figure 7-12)
.
3. Lower the front weight and guard against
hitting the motor control microprocessor board mounted to the base assembly.
Front Weight
Strap
Counter Balance Bolt
Figure 7-12
16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY
7-7
Page 73
STRUT ASSEMBLY
Two struts are mounted to the base and in­serted into rubber isolators in the rear of the outer tub assembly. The struts provide sus­pension support to the outer tub assembly.
REMOVAL
Isolator Strut
Push Rod
1. Disconnect power to the unit.
2. Remove the front panel, top cover and front shroud
(See Front Panel, Top Cover
and Front Shroud Removal).
3. Disconnect dispenser hoses and injector hose connections to the outer tub.
4. Lean the cabinet forward to access the two locking nuts that secure the struts to the bottom of the base frame assembly. Use an 8mm or ½" socket. Remove the lock­ing nuts and lower strut washers.
5. With the washer standing upright, roll the washer forward and off the struts, which mount into the rubber isolators inserted into the rear of the outer tub.
6. To Reinstall: Reverse the previous steps.
Rear Strut
Isolator
Lower Strut Washer Locking Nut
Figure 7-13
4. Release the small locking tab on top of the switch and rotate the switch to disengage the switch from the strut.
5. To Reinstall: Reverse the aforementioned steps.
INERTIAL UNBALANCE SWITCH
The purpose of the switch is to monitor the lateral horizontal movement of the outer tub
Strut Displacement Switch
during spin (above 500 RPM), versus the ver­tical movement. When a severe amount of
1. Disconnect power to the unit.
motion is detected, the machine control will implement a reduction in speed or start a re-
2. Remove the rear access panel for imme­diate access or remove the front panel.
distribution of the clothes load. This is done by gradually stopping the motor. After the motor stops, the tumbler will alternately
3. Remove the wires to the switch.
tumble, first in one direction then another. Af­ter a brief time, the machine will again work up to a full spin. Should the machine detect another unbalance, the control will implement another redistribution of the load.
16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY
7-8
Page 74
REMOVAL
REMOVAL
1. Disconnect power to the unit.
2. Remove the front panel and lift the top
cover
Removal)
(See Front Panel & Top Cover
.
3. The switch is located on the upper right
hand side of the outer tub assembly
(Fig-
ure 7-14).
4. Remove the two screws securing the
switch to the outer tub assembly.
1. Disconnect power to the unit.
2. Remove the front panel and lift the top cover
(See Front Panel & Top Cover Re-
moval).
3. The switch is located on the upper right hand side of the outer tub assembly, di­rectly behind the right upper front suspen­sion spring
(Figure 7-15).
4. Remove the screw and flat washer secur­ing the switch in place.
5. Using a flathead screwdriver, pry the switch body from the outer tub assembly.
Outer Tub
Figure 7-14
TUB DISPLACEMENT SWITCH
The displacement switch is located on the right hand side of the outer tub assembly, be­low the upper weight. The location of the switch on the outer tub will activate the switch whenever the outer tub assembly makes con­tact with the wall of the cabinet. Should con­tact with the cabinet occur before the machine reaches 500 rpm, the machine control is alerted and will reduce speed to implement a redistribution program.
Switch
Figure 7-15
16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY
7-9
Page 75
16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY
7-10
Page 76
SECTION 8. MOTOR DRIVE SYSTEMSECTION 8. MOTOR DRIVE SYSTEM
SECTION 8. MOTOR DRIVE SYSTEM
SECTION 8. MOTOR DRIVE SYSTEMSECTION 8. MOTOR DRIVE SYSTEM
Warning Warning
Warning
Warning Warning
electrical power to theelectrical power to the
electrical power to the
electrical power to theelectrical power to the unit before beginning anyunit before beginning any
unit before beginning any
unit before beginning anyunit before beginning any service procedures.service procedures.
service procedures.
service procedures.service procedures.
The motor drive system tear-down procedure covers all components related to the drive system, such as the drive motor, drive belt, motor control, machine control and acceler­ometer switch.
DRIVE BELTDRIVE BELT
DRIVE BELT
DRIVE BELTDRIVE BELT
The drive belt has six (6) ribs which mate with the face of the motor pulley. The belt encircles the motor pulley and the drive pulley of the spinner.
REMOVALREMOVAL
REMOVAL
REMOVALREMOVAL
- Always shut off- Always shut off
- Always shut off
- Always shut off- Always shut off
Figure 8-1Figure 8-1
Figure 8-1
Figure 8-1Figure 8-1
DRIVE MOTORDRIVE MOTOR
DRIVE MOTOR
DRIVE MOTORDRIVE MOTOR
The drive motor is hinged into the left bottom area of the outer tub and secured to the outer tub by the bolt on the belt adjustment wheel. A slot in the mounting bracket of the outer tub allows the motor to pivot and allows adjustment of the drive belt tension.
Disconnect power to the unit. Disconnect power to the unit.
1.
Disconnect power to the unit.
Disconnect power to the unit. Disconnect power to the unit.
2 . Roll the belt off the drive pulley and re-
move from the motor pulley.
ADJUSTMENTADJUSTMENT
ADJUSTMENT
ADJUSTMENTADJUSTMENT
Check belt tension. If loose, remove the belt, loosen the belt adjustment wheel bolt and rotate the wheel one notch in a clockwise rotation. Check belt tension again. The belt should experience no more than 1" deflection when depressed toward the inside
(Figure 8-1).(Figure 8-1).
(Figure 8-1).
(Figure 8-1).(Figure 8-1).
REMOVALREMOVAL
REMOVAL
REMOVALREMOVAL
Disconnect power to the unit.Disconnect power to the unit.
1.
Disconnect power to the unit.
Disconnect power to the unit.Disconnect power to the unit.
2 . Remove the front panel, rear access panel
and the front weight
Rear Access Removal).Rear Access Removal).
Rear Access Removal).
Rear Access Removal).Rear Access Removal).
3 . From the rear, locate the belt adjustment
wheel and note the adjustment number aligned with the rib of the outer tub. This will help later when the belt adjustment wheel is placed back onto the outer tub and the belt is remounted on the motor and drive pulley. Remove the bolt secur­ing the belt adjustment wheel
(Figure 8-2).(Figure 8-2).
(Figure 8-2).
(Figure 8-2).(Figure 8-2).
(See Front Panel &(See Front Panel &
(See Front Panel &
(See Front Panel &(See Front Panel &
16008373-01 SECTION 8. MOTOR DRIVE SYSTEM
© 1998 Maytag Corporation
8-18-1
8-1
8-18-1
Page 77
4. Lift the motor slightly to disengage the belt from the motor pulley. Place motor on the base frame.
Figure 8-2Figure 8-2
Figure 8-2
Figure 8-2Figure 8-2
Figure 8-3Figure 8-3
Figure 8-3
Figure 8-3Figure 8-3
5 . From the front, remove the wire harnesses
from the back of the motor.
6 . Grasp the motor and slide it carefully from
the pivot hang holes in the outer tub.
REPLACEMENTREPLACEMENT
REPLACEMENT
REPLACEMENTREPLACEMENT
1 . Reverse the previous procedures to re-
mount the motor.
NOTE:NOTE:
Prior to hanging the motor, recon- Prior to hanging the motor, recon-
NOTE:
Prior to hanging the motor, recon-
NOTE:NOTE:
Prior to hanging the motor, recon- Prior to hanging the motor, recon-
nect motor wire harnesses and ground wire.nect motor wire harnesses and ground wire.
nect motor wire harnesses and ground wire.
nect motor wire harnesses and ground wire.nect motor wire harnesses and ground wire.
2 . Prior to hanging the motor on the outer
tub, check the positioning of the rubber motor mounts.
3 . Check belt tension. If loose, loosen the belt
adjustment wheel bolt and rotate the wheel one notch in a clockwise rotation. Check belt tension again. The belt should experience no more than a 1" deflection when depressed to the inside.
MACHINE CONTROLMACHINE CONTROL
MACHINE CONTROL
MACHINE CONTROLMACHINE CONTROL
The machine control is located in the control console and is secured to the rear cover.
REMOVALREMOVAL
REMOVAL
REMOVALREMOVAL
Disconnect power to the unit.Disconnect power to the unit.
1.
Disconnect power to the unit.
Disconnect power to the unit.Disconnect power to the unit.
2 . Remove the control console
Console Removal).Console Removal).
Console Removal).
Console Removal).Console Removal).
3 . Remove the wiring from the machine con-
trol, paying close attention to the wire har­ness hookup to the control board.
4. Remove the two 5/16" nuts securing the board to the rear console panel.
5. Reverse the previous procedures to re­mount the board.
(See Control(See Control
(See Control
(See Control(See Control
16008373-01 SECTION 8. MOTOR DRIVE SYSYTEM
© 1998 Maytag Corporation
8-28-2
8-2
8-28-2
Page 78
MOTOR CONTROLMOTOR CONTROL
MOTOR CONTROL
MOTOR CONTROLMOTOR CONTROL
The motor control is located behind the front panel in the lower right hand side of the cabinet. The assembly comprises of the circuit board, control cover, mounting plate and motor wire harness.
REMOVALREMOVAL
REMOVAL
REMOVALREMOVAL
Disconnect power to the unit.Disconnect power to the unit.
1.
Disconnect power to the unit.
Disconnect power to the unit.Disconnect power to the unit.
2 . Remove the front panel (
RemovalRemoval
Removal).
RemovalRemoval
3 . Remove the shield/cover from the motor
control board by depressing the locking tab found along the lower left side of the motor control base plate.
4. Remove the wire harness leading to the control console
(Figure 8-4).(Figure 8-4).
(Figure 8-4).
(Figure 8-4).(Figure 8-4).
See Front PanelSee Front Panel
See Front Panel
See Front PanelSee Front Panel
Figure 8-4Figure 8-4
Figure 8-4
Figure 8-4Figure 8-4
5 . Remove the wire harness from the motor.
6 . Remove two mounting screws in front of
the motor securing the assembly to the base. A rear locating tab on the motor control base engages with a slot in the base frame.
7 . To replace, reverse the previous steps.
16008373-01 SECTION 8. MOTOR DRIVE SYSTEM
© 1998 Maytag Corporation
8-38-3
8-3
8-38-3
Page 79
16008373-01 SECTION 8. MOTOR DRIVE SYSYTEM
© 1998 Maytag Corporation
8-48-4
8-4
8-48-4
Page 80
SECTION 9. ELECTRICAL SCHEMATICS & TIMERSECTION 9. ELECTRICAL SCHEMATICS & TIMER
SECTION 9. ELECTRICAL SCHEMATICS & TIMER
SECTION 9. ELECTRICAL SCHEMATICS & TIMERSECTION 9. ELECTRICAL SCHEMATICS & TIMER INFORMATIONINFORMATION
INFORMATION
INFORMATIONINFORMATION
Prior to Series 17
16008373-01 SECTION 9. ELECTRICAL SCHEMATICS
© 1998 Maytag Corporation
9-19-1
9-1
9-19-1
Page 81
TIMER CHART - Prior to Series 17TIMER CHART - Prior to Series 17
TIMER CHART - Prior to Series 17
TIMER CHART - Prior to Series 17TIMER CHART - Prior to Series 17
16008373-01 SECTION 9. ELECTRICAL SCHEMATICS
© 1998 Maytag Corporation
9-29-2
9-2
9-29-2
Page 82
ELECTRICAL SCHEMATIC - Series 17ELECTRICAL SCHEMATIC - Series 17
ELECTRICAL SCHEMATIC - Series 17
ELECTRICAL SCHEMATIC - Series 17ELECTRICAL SCHEMATIC - Series 17
16008373-01 SECTION 9. ELECTRICAL SCHEMATICS
© 1998 Maytag Corporation
9-39-3
9-3
9-39-3
Page 83
TIMER CHART - Series 17TIMER CHART - Series 17
TIMER CHART - Series 17
TIMER CHART - Series 17TIMER CHART - Series 17
16008373-01 SECTION 9. ELECTRICAL SCHEMATICS
© 1998 Maytag Corporation
9-49-4
9-4
9-49-4
Page 84
ELECTRICAL SCHEMATIC - Series 18ELECTRICAL SCHEMATIC - Series 18
ELECTRICAL SCHEMATIC - Series 18
ELECTRICAL SCHEMATIC - Series 18ELECTRICAL SCHEMATIC - Series 18
16008373-01 SECTION 9. ELECTRICAL SCHEMATICS
© 1998 Maytag Corporation
9-59-5
9-5
9-59-5
Page 85
TIMER CHART - Series 18TIMER CHART - Series 18
TIMER CHART - Series 18
TIMER CHART - Series 18TIMER CHART - Series 18
16008373-01 SECTION 9. ELECTRICAL SCHEMATICS
© 1998 Maytag Corporation
9-69-6
9-6
9-69-6
Page 86
ELECTRICAL SCHEMATIC - Series 19ELECTRICAL SCHEMATIC - Series 19
ELECTRICAL SCHEMATIC - Series 19
ELECTRICAL SCHEMATIC - Series 19ELECTRICAL SCHEMATIC - Series 19
16008373-01 SECTION 9. ELECTRICAL SCHEMATICS
© 1998 Maytag Corporation
9-79-7
9-7
9-79-7
Page 87
NOTESNOTES
NOTES
NOTESNOTES
::
:
::
16008373-01 SECTION 9. ELECTRICAL SCHEMATICS
© 1998 Maytag Corporation
9-89-8
9-8
9-89-8
Page 88
INTRODUCTION
Attached is supplement three (16008373-03) for service manual 16008373, which replaces supplement two (16008373-02). This Maytag Washer Service Manual supplement covers Models MAH4000 & MAH5500A. We suggest you file this with your 16008373 Manual for reference.
Models covered in this manual supplement:
MAH4000 MAH5500A
CONTENTS
SECTION 1. MAH4000/MAH5500A CONTROL FACIA ........................................ 1
SECTION 2. SPECIFICATIONS ............................................................................. 2
SECTION 3. BASIC MACHINE OPERATION ........................................................ 3
SECTION 4. WASHER CONTROLS OVERVIEW .................................................. 3
SECTION 5. CYCLE REVIEW ................................................................................ 4
Stain Cycle ........................................................................................ 4
Cycle Times ...................................................................................... 6
SECTION 6. GENERAL COMPONENT - EXPLODED VIEW ................................ 7
SECTION 7. ELECTRICAL INFORMATION .......................................................... 8
SECTION 8. WATER CARRYING COMPONENTS ............................................... 9
WATER VALVE.................................................................................. 9
DISPENSER ASSEMBLY................................................................ 9
RECIRCULATION PUMP .................................................................. 10
DETERGENT HOSE .......................................................................... 11
SECTION 9. WIRING INFORMATION .................................................................. 14
For additional information on material covered in this manual, including safety issues, contact:
16010199 (16008373-03) Revised 7/00
Maytag Appliances Sales Company
240 Edwards Street, S.E.
Cleveland, TN 37311
Phone: 423-472-3333
1
©2000 Maytag Appliances Sales Company
Page 89
(The following information is supplemental to the information found in the basic manual part number 16008373.)
SECTION 1. MAH4000/MAH5500A CONTROL FACIA
SECTION 2. SPECIFICATIONS
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2
©2000 Maytag Appliances Sales Company
Page 90
©2000 Maytag Appliances Sales Company
16010199 (16008373-03) Revised 7/00
3
SECTION 3. BASIC MACHINE OPERATION
The model MAH4000 and MAH5500A are similar to the MAH3000 washer, with the exception being the MAH4000 and MAH5500A have a recirculation pump in series between the outer tub outlet and the drain pump. When the water pressure switch becomes satisfied (Series 11 and later on the MAH4000 and all the MAH5500A), power is then applied to the recirculation pump. The recirculation pump draws water from the bottom of the outer tub and circulates the water up through the detergent hose, then into the top of the outer tub. By doing this, the washer is able to provide a more even distribution of detergent throughout the wash load.
The software of the MAH4000 and MAH5500A models is slightly different than the software used in the MAH3000 washer. Fabric Selections on the control console were changed from Cotton/Sturdy to Whites, Easy Care/Perm Press to Colors, Delicates remained the same. Series 10 of the MAH4000 washer allowed the recirculating pump to be directly controlled by the timer. (Figure 4-1)
SECTION 4. WASHER CONTROLS OVERVIEW
Series 11 & Later
Figure 4-2
Figure 4-1
Series 10
(MAH4000 only)
(MAH4000 & MAH5500A)
Page 91
A new Stain Cycle and revised tumble patterns were introduced and will be described in the following pages.
At series 11 the timer was changed, wire harness revised and the schematic was changed. The timer cams were changed in the timer, the wire harness changed to pull wires out of the timer connector and the pump is now in series with the pressure switch, also an extra wire was jumpered across the pressure switch. Now the recircu­lating pump is controlled through the pressure switch (Figure 4-2). This was done to force the washer to fill with water prior to starting the recirculation pump.
SECTION 5. CYCLE REVIEW
Figure 5-1
Cycles on the Fabrics switch now list the cycles according to how clothes are sorted. This simiplifies how to select the cycles in doing the wash. A new Stain Cycle was added to the Option Switch which adds cycle wash time, vari­ous tumble patterns and an additional rinse with longer tumble times during the rinse. (See Figure 5-1)
16010199 (16008373-03) Revised 7/00
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Page 92
Cycle Times:
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Notes:
1. The main wash times listed include 2 minutes of bleach fill and tumble time.
2. The total cycle times are approximate and will vary based on water fill times, due to types of clothing loads and the time for the door lock system to retract at the end of the cycle.
3. The main wash time is affected significantly if the machine control detects an exces­sive amount of suds via a loss of motor torque. The washer will go into a suds reduction routine, consisting of a series of additional rinse and partial drain cycles to reduce the suds present. (See Troubleshooting & Diagnosis - Clothes Wet at End
of Spin)
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16010199 (16008373-03) Revised 7/00
©2000 Maytag Appliances Sales Company
5
Page 93
Stain Cycle:
General overview of Stain Cycle:
1) Tumble in the normal tumble pattern until it has completed filling plus 3 minutes.
2) Tumble for an additional 15 minutes with a 6T/24P tumble pattern.
3) Return to selected tumble pattern and proceed with remainder of the wash time preselected.
4) Bleach fill and first rinse fill temperature will be the same as the wash fill
temperature.
5) Rinse times (including fills) are now 5-1/2 minutes, 4 minutes, 4
minutes and 4-1/2 minutes.
6) The fourth rinse is forced, which would be warm if warm rinse selected.
(Colors will not default to cold on the 4th rinse.)
The following is an example of a Stain Cycle:
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Suds detection during stain cycle:
1. Torque baseline is set during the first 3 minutes of Wash cycle after the washer is filled.
2. Suds detection is frozen during 15 minutes of the 6/24 tumble action during Wash/ Fill cycle.
3. Suds detection begins when cycle resumes the initial selected tumble pattern .
16010199 (16008373-03) Revised 7/00
©2000 Maytag Appliances Sales Company
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Page 94
SECTION 6. GENERAL COMPONENT - EXPLODED VIEW
Component Identification & Location:
16010199 (16008373-03) Revised 7/00
©2000 Maytag Appliances Sales Company
7
Page 95
SECTION 7. ELECTRICAL INFORMATION
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8
©2000 Maytag Appliances Sales Company
Page 96
SECTION 8. WATER CARRYING COMPONENTS
Warning - Always shut off electrical power to the unit before beginning any ser­vice repair procedures.
WATER VALVE
The water valve is accessible from the front of the machine. The flow rate of the dispenser 3 gpm.
Removal
1. Discontinue power and water to the machine.
2. Remove the front panel and lift the top cover.
3. Remove the wire harness connections to the water valve solenoids.
4. Loosen and remove the hose clamps on the inlet hoses leading away from the water valve.
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6. Carefully lift the valve with the inlet hoses attached and direct the inlet hoses through the openings in the valve mounting bracket.
7. The hoses can be crimped or the water shut off at the faucets. Place a towel below the valve and remove the inlet hoses from the water valve.
8. To reinstall, reverse the aforemen­tioned procedure.
DISPENSER ASSEMBLY
5. Locate and loosen the valve mounting screw by turning the screw at least three full turns.
NOTE: The mounting screw serves as a locating pin to hold the valve in position on the mounting bracket. By partially removing the screw, the water valve can now be slid to the left and removed from the bracket (Figure 8-1).
16010199 (16008373-03) Revised 7/00
©2000 Maytag Appliances Sales Company
The wax motor and linkage system de­signed for proper dispersing of the water into the bleach and fabric softener dis­pensing cups has been eliminated. The new system uses a 4 coil water valve with designated inlet hoses leading to each dispensing cup. The 4 coil water valve operates like a 2 coil water valve. The two water valve coils are individually dedicated to dispensing water through the bleach and fabric softener dispensing cups. When either of these valves is open, part of the flow will be routed through the dispenser cup. A portion of the flow will still be routed through the detergent wash area.
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DISPENSER
DISPENSER
FLUME
FABRIC
SOFTENER
INLET HOSE
INLET HOSE
BOTTOM
DETERGENT
WASH INLET
HOSE
BLEACH
Figure 8-2
As a result of this revision, a new dis­penser bottom, water valve and hoses were introduced. (See Figure 8-2)
OPERATION:
When Bleach or Fabric Softener is re­quired to dispense, the dedicated sole­noid on the water valve is activated the same as the previously used wax motor. Water is directed to dedicated spouts on the dispenser bottom. (See Figure 8-3)
RECIRCULATION PUMP
The Recirculation Pump is accessible from the front or the rear of the machine. The pump is connected in series with the outer tub pump hose and the drain hose.
(See Figure 8-4)
Figure 8-4
1. Disconnect power and water to the machine.
Inside the dispenser bottom, water is directed into the designated channels leading to the siphon cup assembly.
FABRIC
SOFTENER
BLEACH
DISPENSER
BOTTOM
(TOP VIEW)
NOZZLE WAS
REMOVED
Figure 8-3
2. Remove the front panel.
3. Lay a towel under the tub to pump hose and loosen the clamp on the pump connection to the hose.
4. Loosen the clamp on the detergent hose connected to the side of the recirculation pump.
5. Lift the recirculation pump at an angle to disengage the locating tab of the mounting bracket from the baseframe.
(See Figure 8-5)
16010199 (16008373-03) Revised 7/00
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DETERGENT HOSE
The detergent hose leads from the recir­culation pump up the rear of the washer cabinet and leads to the top of the outer tub assembly. The hose provides a path for the water to recirculate from the lower part of the outer tub assembly to the enter on top of the outer tub assembly.
Note: Small indicator marks are painted on the hose to locate and properly posi­tion the metal mounting clips onto the hose.
Figure 8-5
6. To remove the pump from the mount­ing bracket, pull down on the mount­ing tabs and slide the pump off the mounting bracket. (See Figure 8-6)
DETERGENT HOSE
INDICATOR
MARK
RECIRCULATION PUMP
Figure 8-7
Removal
Figure 8-6
16010199 (16008373-03) Revised 7/00
1. Disconnect power and water to the washer.
2. Remove the detergent hose from the recirculation pump.
NOTE: Indicator mark on hose for reinstallation.
11
©2000 Maytag Appliances Sales Company
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3. Locate the rear mounting clip on the detergent hose in the access panel opening and slide the clip off the cabinet flange. (See Figure 8-8)
Note: When reinstalling clip to cabinet ensure the clip is approxi­mately 1 inch up from the inside corner of the access opening to prevent kinking of the hose.
5. The detergent hose then goes verti­cally to the upper right rear flange of the cabinet and is retained by two metal clips. Indicators are on the hose showing the proper positioning of the clips on the hose.
NOTE: The upper left clip should be positioned directly above the top air dome hose retainer. (See Figure 8-11 & 8-12)
Figure 8-8
4. Follow the detergent hose vertically up to the air dome hose mounting bracket. The detergent hose is tucked behind the air dome hose. (See Figure 8-9)
Figure 8-9
Figure 8-10
Figure 8-11
6. The detergent hose turns 90 degrees toward the front of the washer and passes through the saddle horn on the top of the outer tub. Unsnap the hose from the saddle horn.
(See Figure 8-12)
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Figure 8-12
7. The saddle horn is secured to the top of the outer tub with a screw.
NOTE: The upper wire harness for the unbalance circuit is snapped into the saddle horn with the detergent hose.
8. Loosen the clamp on the detergent hose on the outer tub and remove the hose.
9. To reinstall, reverse the removal steps taking note of the indicators on the hose in reference to the mounting clips, making sure the hose does not kink above the recirculation pump.
16010199 (16008373-03) Revised 7/00
©2000 Maytag Appliances Sales Company
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