Maytag WU100 User manual

INDEX
SUBJECT
SECTION
1
. ELECTRICAL
TESTEQUIPMENT PAGE
1-1
ElectricalComponentTesting ......1-1
38559
Maytag
Appliance
TestMeter ...... 1-2
38519Volt-Wattmeter.. .....1-6
SECTION
2 . ELECTRICAL
- MECHANICAL
TROUBLESHOOTING
(See
Sectton2lor
DetatledIndex)
SECTION
3 . SERVICE
PROCEDURES
O Control
Panel
Assembly
.
Timer
Timer
Motor
RapidAdvance
Motor
Knoband
Dial.. .
ControlSwitches
IndicatorLights
MicroprocessorBoard ..3-5
TouchPad.. .... 3-6
38186
Clamp-On
Ammeter
38133
Motor
Test
Cord
Water
ValveTest ... 1-11
RinseDispenserTest. .....1-12
38206
Circuit
TestBoard ... 1-13
1-9
2-1
3-1
3-1
3-2
3-3
3-3
3-3
3-4
3-4
Transformer
....
Varistor
Relavs
@ ruuAssembly
Tub..
Tublnsulation...
BaseFrame
TubSupport
Front
& RearL
HingePins eveling
Legs
Terminal
Box.. 3-14
Drip
Flange
andShield ... ... 3-14
HeatingElement
Heater
Hook .
Thermostat
DoorStrike
TopFlange
andChannel
(9 Front, Access
and
ToePanels
Front
and
AccessPanel
3-7
3-8
3-9
3-10
3-1
1
3-11
3-12
3-12
3-13
3-13
3-15
3-16
3-16
3-17
3-17
3-18
@ tnnerDoor . .. 3-22
DoorAdjustmeni
.:..::..:. ......s-2s
DoorSprings.... .....3-23
DoorHinge ....3-24
Door
VentAssembly .. 3'24
DoorPlug ....^ 3-25
DoorGasket.... .....3-25
@ OoorLatchMechanismandDoor
Switch .. 3-27
Door
Switch .
... 3-28
@ OetergentCup
Assembly ... 3-29

SUBJECT PAGE
/=\
!JRinseConditionerDispenser ......3-32
fil fittSvstem ... 3-34
v WaterValve ...3-35
24VDCWaterValve
(Diode) .. 3-36
FloatAssembly... ....3-37
Vent
Cover .... 3-39
(f WashSystem ......3-40
WaterCirculation .....3-41
UpperWashArm. ....3-42
UpperWashArmHose ......3-42
LowerWashArm
andCenter
Spray
Nozzle . 3-42
Strainer . 3-43
Filter. ...3-43
BackFlushArm
andSealRings ..... 3-44
LowerWashArmBearing
.... ......3-44
LowerWashArmSupport 3-44
PowerModule ..3-45
PumpOover .....3-47
Circulatinglmpeller .....3-47
Baffle ... .. 3-47
Drainlmpeller
and
"0"
Ring ..
.
. 3-48
Boot
Seal 3-48
BearingAssembly
andPulley .
.. 3-48
(p Drive
Motor .. 3-50
Belt.. ...3-52
@AtowerAssembly ....3-53
AirlnletAssembly ....3-55
@ nacts andUpperRackTrackAssembly .. 3-56
LowerDishRack .....3-56
UpperDishRack .....3-56
Rack
TrackRemoval .. 3-56
Rack
Track
Shaftand
Roller .. 3-57
DishRackRoller ......3-57
CupRack ......3-57
AdjustableUpperRack
. .....3-57
(p Cabinet,
Woodtop
and
BaseFrame ...... 3-59
WoodTop. ....3-60
Cabinet 3-60
Casters 3-60
Front
CasterSupport .. 3-60
BaseFrame ....3-60
RetainerforFaucet
Coupler .. 3-61
[! Faucet
CouplerandPower
Cord
(WC) .... 3-62
Faucet
Coupler
Disconnect
Lever
an
Fill
andDrainHoses
Nipple
for
Coupler
d ThumbRelease 3-62
3-63
3-63
3-64
Faucet
Coupler . 3-64
GasketforCouplerlnlet .....3-64
PowerCord. ...3-64
SECTION4-SCHEMATICS .......4-1
"OO"Models ........4-2
"O1"Models ...4-24
"02"
Models ...4-36
WU1000Model ......4-48

SUBJECT PAGE
SECTION5.GENERALINFORMATION ......5-1
Specifications "....' 5'2
UndercounterModels '..5-2
Convertible
Models ' ' .. 5-4
WaterOonsumption
.... ...' 5-4
CycleCharts ..5-7
Special
WashCycles ......5-15
lnstallation
Installation
Reouirements
...
Built-in
Models
Convertible
Models
50HzOperatton
Installation
- Built-in
Models
Installation
- Convertible
Models
Installation
Accessories
....
Dishwasher
Warranty
Loading
Procedures
Common
Washability
Problems .. .. 5-33
WhatToDolf
. .....5-38
DoorSpring
Adjustment
Odor
from
NewDishwasher
Oversudsing
WinterizingDishwasher ......5-38
RustStains-Racks&Tub ...5-39
Dish
RackDamaged .. 5-39
WoodTop-Warpage.. ......5-39
5-18
5-18
5-18
5-19
5-20
5-21
5-24
5-25
5-28
5-30
5-38
5-38
5-38

COMPONENT
INDEX
SUBJECT PAGE
AdjustableUpperRack ...3-57
AirInletAssembly .
. 3-55
BackFlushArmandSeal
Rings .. 3-44
Baffle ......3-47
Base
Frame
(WC) .. 3-60
BaseFrame
(WU) .. 3-12
BearingAssemblyandPulley ....3-48
Belt.. ......3-52
BlowerAssembly ..3-53
BootSeal ... 3-48
Cabinet ....3-60
Cabinet,
WoodTop
and
Base
Frame .. .. 3-59
Casters ....3-60
Circulatinglmpeller ......3-47
Control
PanelAssembly ...3-1
ControlSwitches ....3-4
CupRack ...3-57
DetergentCupAssembly... .....3-29
Disconnect
Lever
and
ThumbRelease .
. 3-63
DishRackRoller ...3-57
DoorAdjustment ...3-23
DoorGasket
.... ..3-25
DoorHinge . 3-24
DoorLatch
Mechanism
andDoor Switch ... 3-27,3-28
DoorPlug ..3-25
DoorSprings.... ..3-23
Door
Strike . 3-17
DoorVentAssembly ......3-24
Drainlmpellerand"O"Ring .....3-48
DripFlange
and
Shield ... 3-14
DriveMotor.... ...3-50
Faucet
CouplerandPower Cord
(WC) ... 3-62,3-64
Fill
and
DrainHoses
(WC) 3-63
Fill
System ..3-34
Filter. ......3-43
FloatAssembly.. 3-37
Front,AccessandToePanels .....3-18,3-19
FronlCasterSupport .....3-60
Front
and
RearLevelingLegs .... 3-13
Gasket
for
Coupler
Inlet.. 3-64
HeaterHook. ..... 3-16
HeatingElement ... 3-15
HingePins. 3-13
fndicatorlights .....3-4
fnnerDoor .. 3-22
KnobandDial.. ....3-3
LowerDish
Rack .. 3-56
LowerWashArmBearing.... ...3-44
LowerWashArm
andCenterSpray
Nozzle .... 3-42
LowerWashArmSupport.... ...3-44
MicroprocessorBoard .....3-5
Nipplefor
Coupler 3-64
PowerCord. ......3-64
PowerModule .....3-45
Pumo
Cover ..... . 3-47

SUBJECT PAGE
RackTrackRemoval .....3-56
RackTrackShaftandRoller .....3-57
RacksandUpperRackTrackAssembly ......3-56
Rapid
AdvanceTimerMotor ... ... 3-3
Relays ......3-9
RetainerforFaucetCoupler .....3-61
Rinse
ConditionerDispenser ... .. 3-32
Strainer .. .. 3-43
Terminal
Box.. ....3-14
Thermostat 3-16
Timer ....... 3-2
TimerMotor ..3-3
TopFlangeandChannel
... .....3-17
TouchPad .. 3-6
Transformer..... ...3-7
Tub.. ......3-11
TubAssembly
... .. 3-10
Tublnsulation.. ...3-11
TubSupport ......3-12
Upper
DishRack
Upper
WashArm 3-56
3-42
UpperWashArmHose ... 3-42
Varistor .....3-8
Vent
Cover 3-39
WashSystem .....3-40
WaterCirculation ..3-41
Water
Valve .. 3-35.3-36
WoodTop
. .3-60

This service manual is intended fo assisf you in diagnosing inoperative conditions which may
develop in the "00", "0l"and "02" Jetclean model dishwasher.Electricalcomponenttesting is,
for themostpart, made withan appliance testmeter and consistsof checkingforopenor closed
circuits. Mechanical checks are made through sight and sound, along with the use of a volt-
wattmeter
andclamp-onammeter.
This manual is designed for the
construction of Maytag products. technician who is familiar with the operation and
The first and most importantstep of any
service
callis to accuratelydetermine
what
thecomplaint
is.Thisis best accomplished
by questioning
the customer,
findingout
what
the product
is or isn'tdoingand why
they feel a problem exists. Once the
complaint
is understood,using thismanual
becomes
relativelyeasy.
,;o
id.
..itt.
,t tY f-
rA\
til'l'l
ll
Thismanualcoversservice
procedures
andtroubleshooting
checks
for
the
following
models.
Many
of
theservice
procedures
andtroubleshooting
theydiffer,
itwillbe
noted.
"Microprocessor"
wu1000
thesameonall
models.
When
"00"
WUlOO
wu-wc300
WU5OO
WU-WC70O
WU9OO
"01"
WU1O1
wu-wc301
WU501
wu-wc701
WU901
"02"
wu202
WU-WC3O2
WU5O2
WU-WC702
WU9O2
checksare

Section1
covers
Electrical
TestEquipmentwhichis
available
fromThe
Maytag
Company
for
use
onthedishwasher.This
sectionalsocovers
general
useofthe
equipment,
in
addition
to
providing
specific
information
onamperage,
wattage
andresistancereadings
which
shouldbeseen.
Section 2 covers Electrical-Mechanical
Troubleshooting
and provides a list of possible
complaints.Find
thecomplaintwhich
you
feel
bestmatches
that
provided
bythecustomerand
turntotheappropriate
page(s).
You
willfind
alist
of
possible
electricalandmechanical
problems
for
thecomplaint,whichhave
been
listedin
their
orderof:
1. Easein
checking.
2. Probability.
Systematicallyeliminating
these
possibilities
will
allow
you
to
find
andcorrect
the
problem.
Section 3 coversService Procedures.
This sectionwill provide
information
on location of
components,
disassembly
and/or
reassembly
procedures,
the
purpose
and/orfunction
ofthe
part
and
in
some
instances
specific
checksto
be
made.
Section4
covers
Electrical
Schematics
and
Electrical
Flow
Charts.
Section5 coversGenerallnformation
suchasspecifications,
installationrequirements,
cycle
charts,
etc.

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Subject Page
OControl
PanelAssembly ...3-1
@fuUAsembly ..3-10
@Front
Access
and
ToePanels...3-18
@lnnerDoor ....3-22
@Door
Latch
and
Door
Switch
....3-27
@Detergent
Cup
Assembly ..3-29
ORinse
ConditionerDispenser...3-32
@rill
system ....3-34
@Wastr
System .
3-40
@Drive
Motor ...3.50
@BlowerAssembly ...3-53
@Racks
and
RackTrack ....3-56
-OCaOinet,
Wood
TopandBase Frame
...3-59
GD
Faucet
Coupler
and
Power
Cord
.
3-62
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