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Maytag MAT12CSA, Service Manual

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Maytag MAT12CSA Service Manual Download Page 1

Commercial
Top Load
Washer

This Base Manual covers general information

Refer to individual Technical Sheet

for information on specific models

This manual includes, but is

not limited to the following:

Service

This manual is to be used by qualified appliance
technicians only. Maytag does not assume any
responsibility for property damage or personal
injury for improper service procedures done by
an unqualified person.

16022842

Revision 0

December 2003

MAT12PDA
MAT12PDB
MAT12PDC
MAT12PDD
MAT12PDS
MAT12PRA
MAT12PRB
MAT12PRD
MAT12PRS
MAT12PSA
MAT12PSB
MAT12PSD
MAT12CSA
MAT12CSD
MAT13MNA
MAT13MND
MAT13PNA
MAT13PND

Summary of Contents for MAT12CSA

Page 1: ...e This manual is to be used by qualified appliance technicians only Maytag does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person 16022842 Revision 0 December 2003 MAT12PDA MAT12PDB MAT12PDC MAT12PDD MAT12PDS MAT12PRA MAT12PRB MAT12PRD MAT12PRS MAT12PSA MAT12PSB MAT12PSD MAT12CSA MAT12CSD MAT13MNA MAT13MND MAT13PNA MA...

Page 2: ...ESPONSIBILITY TO REVIEW ALL APPROPRIATE SERVICE INFORMATION BEFORE BEGINNING REPAIRS WARNING To avoid risk of severe personal injury or death disconnect power before working servicing on appliance to avoid electrical shock To locate an authorized servicer please consult your telephone book or the distributor from whom you purchased this product For further assistance Contact your local commercial ...

Page 3: ...e Selector Switch 17 Transformer 17 Motor Run Relay 17 Reversing Motor Relay 18 Indicator Light 18 Lid Switch Assembly Prior series 15 18 Lid Switch Assembly After series 15 18 Unbalance Lever and Plunger Assembly 19 Table of Contents Disassembly Procedures continued Pressure Switch 19 Air Dome 19 Water Valve 20 Meter Case 20 Coin Slide 20 Coin Drop Acceptor 20 Coin Sensor 21 Service Door Switch 2...

Page 4: ...d by grasping the plug not the cord Install the washer according to the Installation Instructions All connections for water drain electrical power and grounding must comply with local codes and be made by licensed personnel when required Do not do it yourself unless you know how To reduce the risk of fire clothes which have traces of any flammable substances such as vegetable oil cooking oil machi...

Page 5: ... conjunction with the Parts Manual and Technical Sheet covering the specific model being serviced WARNING To avoid risk of personal injury or death due to electrical shock Observe all local codes and ordinances Disconnect electrical power to unit before servicing Ground appliance properly Check with a qualified electrician if you are not sure this appliance is properly grounded DO NOT ground to ga...

Page 6: ...f the consumer to contact a qualified electrician and have properly grounded three prong wall receptacle installed in accordance with appropriate electrical codes To avoid the risk of electrical shock or death this equipment must be grounded This equipment MUST be grounded In the event of an electrical short circuit grounding reduces the risk of electric shock by providing an escape wire for the e...

Page 7: ...llaundry com Service should be performed by qualified service technicians We also recommend contacting an authorized distributor if service is required Parts and Accessories Purchase replacement parts and accessories over the phone To order accessories for your product call or Maytag product call your distributor or visit the Web Site at www maytagcommerciallaundry com Only factory approved replac...

Page 8: ...s at atmospheric pressure so the valve remains closed It is important to understand that water pressure is the operation force in the water valve When the valve operating solenoid is energized a magnetic field is produced that lifts the plunger away from the pressure release hole in the center of the diaphragm The pressure in the guide tube area is released through the hole allowing the inlet pres...

Page 9: ... helical drive shaft As it rotates down the shaft a lug on the pulley comes against a drive lug which is splined to the helical drive shaft At this point the drive shaft turns with the pulley The pulley bearing which merely resting on top of the pulley also rotates with the pulley drive lug and helical drive shaft At the top of the drive shaft is a spined gear As it rotates it drives a series of g...

Page 10: ...ath Part Number Description Test Meters Appliance Test Meter AC DC voltage and Ohmmeter Clamp On Ammeter 038138 Motor Test Cord 20000021 Lip Seal Tool 22038313 Tub Nut spanner Wrench 038315 Brake Package Wrench 038323 Agitator Puller 038327 Motor Pulley Puller 038555 Center Shaft Installation Tool 20001028 T 15 Torx bit 038227 T20H Torx bit 20001052 T25H Torx bit 20001025 3 Pozi Drive bit 038184 W...

Page 11: ...ore develops Oil under base wipe off and wait to see if more develops It is probably excess oil from brake package Excess oil on helical shaft and in rubber dust cap Replace lip seal in transmission 5 Failure To Agitate Or Spin Belt broken or off pulley Motor pulley off or loose Transmission Brake package loose 6 Poor Spin Out Belt off or broken Dry or dirty motor base Kinked drain hose Clothing a...

Page 12: ... the drive pulley from dragging on the drive lug forcing it off the shaft Pulley Lug 3 8 Drive Lug 1 4 Pump Belt Adjustment 1 Disconnect power supply to unit 2 Pull motor forward so drive belt is tight 3 With washer in an upright position grasp the pump belt in the middle and flex With the belt flexed it should be tightened so that there is approximately 1 4 between the inside surfaces of the pump...

Page 13: ...e between a closed Continuity reading and an open No continuity reading One note when you get and open reading try a higher resistance range setting A very high resistance appears as an open on the lower ranges For best accuracy always rezero meter when changing ranges and or the physical position of the meter Continuity testing as related to an electrical component is the check of a part for an o...

Page 14: ...spin is accomplished by reversing the test cord wires B and C COMPONENT TESTING Illustration Component Test Procedure Results Pressure Switch Disconnect wire terminals from switch Measure resistance across the following terminals Empty Filling 20 to 15 Full Run 20 to 15 Resistance above 2 Ω indicates dirty switch contacts Closed circuit Open circuit Water Valve Measure resistance across the termin...

Page 15: ...onal injury or death disconnect power to unit before servicing unless testing requires power Agitation Spin Windings Wiring Harness Connections Readings Run Winding Red to White or Black 1 5Ω Start Winding Yellow to Blue 3Ω Over load White to Black 0 Ω Note Export Motors run windings 4 9Ω start windings 20 5Ω over load 0 Ω ...

Page 16: ...he control panel forwards Note Use a protective cloth to minimize the chance of scratching the panel on the control console Control Board Microprocessor 1 Disconnect power supply to unit 2 Remove Control Panel 3 Remove four 5 16 nuts from backup plate mounting studs 4 Lift board from studs and tilt forward Don t lose the spacers 5 Disconnect touch pad ribbon Grasp touch pad tail between your thumb...

Page 17: ...ransformer and disconnect wire harness 5 Lay control panel forward 6 Remove wires from switch note switch position and remove switch Note When replacing switch note the position of top on the switch 3 Pull selector switch knob off switch shaft 4 Remove two screws holding switch to control panel Cycle Selector Switch 1 Disconnect power supply to unit 2 Remove all four T 20H Torx screws securing con...

Page 18: ... Remove all four T 20H Torx screws securing control panel facia 3 Disconnect all wires attached to Reversing Motor Relay 4 Remove single screw securing relay Note Notice the positioning tab for ease in mounting and locating relay onto the Control Panel Indicator Light Timer models 1 Disconnect power supply to unit 2 Remove Control Panel 3 Compress tab on the end of the Indicator Light and remove f...

Page 19: ...g the plunger assembly to the Top Cover Front Of Machine Front Of Machine Top Cover Top Cover RIGHT WRONG Unbalance Lever PlungerAssembly Pressure Switch 1 Disconnect power supply to unit 2 Remove Control Panel 3 Disconnect wires attached to the switch 4 Remove clamp securing Air Dome Hose 5 Remove two screws securing Pressure Switch to the Top Cover Air Dome 1 Disconnect power supply to unit 2 Re...

Page 20: ...il flange clears back and lift up to disengage the bracket from the slot on the back panel 4 Remove two screws holding Water Valve to mounting bracket 5 Disconnect wires from terminals 6 Remove injector hose 5 Remove Control Panel 6 Remove screws securing console to meter case 7 Remove two nuts one inside coin box area and inside service access door compartment Coin Slide 1 Disconnect power supply...

Page 21: ...lid down against the hinge ball on the right side and with the right thumb Press down sharply to engaged the lid with the hinge ball on the right side Lid 1 Disconnect power supply to unit 2 Raise the lid where it is at a 45 degree angle 3 With the left hand grasp the left side of the lid toward the back With the right hand grasp the right side of the lid at the front right corner 4 Taking care to...

Page 22: ...nel 3 Pull front panel up and away from the bottom Top Cover 1 Disconnect power supply to unit 2 Remove Front Panel 3 Remove two top cover bolts and tilt Top Cover back Note Hold lid closed or tape lid to the Top Cover to prevent it from striking the Control Panel Tub Cover 1 Disconnect power supply to unit 2 Secure Lid to the Top cover 3 Remove Front Panel 4 Remove screw securing Top cover to the...

Page 23: ... up 4 Remove Tub Cover 5 RemoveAgitator 6 Use spanner wrench to remove clamping nut Note This is a left hand thread so it must be turned clockwise A mallet will be required to loosen the nut Use care when striking wrench to prevent chipping the tub 7 Remove clamping nut washer Note When reinstalling Inner Tub Rock Inner Tub back and forth on the mounting stem to make sure it is seated properly Use...

Page 24: ...not practical to drive the tub bearing from the tub To remove the bearing from the tub elevate the tub so that the porcelain drain tube clear the floor This could be done by placing 2 X 4 under the tub 4 Apply pressure on the bearing pushing it from the tub This can be done by standing on the bearing 4 If the proper amount of the tub cover is not visible at the back or the tub is off center on eit...

Page 25: ...l catch pan Motor Cover will do under the center hub of the Transmission take used oil to your local oil recycling center for proper disposal 7 Remove the 7 16 bolts from the transmission cover Note Be sure the bolts heads are facing up This will insure that you will not get oil all over the back of the washer should the cover come loose Cut around the cover to separate silicon sealer used as a ga...

Page 26: ... be removed as can the Bevel Gear Underneath the Bevel Gear is a spacer Washer Lip Seal 1 Disconnect power supply to unit 2 Tip washer to gain access to bottom of pulley Remove 2 Phillips screw and lock washer from bottom of Drive Shaft 3 Pry drive Lug off Drive Shaft 4 Spin drive Pulley off shaft counterclockwise from bottom 5 Use the Lip Seal Tool to remove the Lip Seal from Center Tube Note Thi...

Page 27: ...re the brake package Damper Assembly 1 Disconnect power supply to unit 2 Remove two bolts holding Top Cover and raise Note Tape Lid to prevent it from striking the Control Panel 3 Remove nut from three eyebolts The position of the nuts on the eyebolts can be marked by placing strips of electrical tape around bolts above nuts before loosening 4 Remove Drive Belts 5 Tip washer back and lay 4 X 4 woo...

Page 28: ... drive pulley Note There is a top and bottom to the rotor bearing When it is positioned correctly the top of the Bearing and the Pulley hub will be about even the concave side against Pulley hub 6 After Brake Package has been removed the Radial Bearing may be removed from top of Brake package 5 Use a hammer to remove the Brake Package 4 Use the Brake Tool to unscrew the Brake Package assembly from...

Page 29: ...e general position of pump before removing 5 Remove Belts 6 Remove three screws holding motor base to base frame 7 Remove Motor and Motor Base 8 Remove Pulley from Motor 9 Disengage tension springs and remove mounting nuts Note To remove two of the nuts align upper and lower sections and insert wrench through the slots into lower section 10 Lift Motor Base off Motor Note With Motor removed carriag...

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