Download Danby DDW1802 Service manual

DEPT.73IA
TECHNICAL FLASH
ServiceBranchManager
Assistant ServiceBranch Manager
Call CentreManager
QualityEducationLeader
T.F. 22-172
ocroBER 2004
CLAUDE BABINEAU_ S/73IA
DIVISION 22
461
DANBY
DISHWASHER
DDW18o2- 14352
- 17352
DDW1805
SERVICE
MANUAL
CLAUDEBABINEAU-DEPARTMENT
731A
CHRISBURNELL-DEPARTMENT
731A
INDEX
1. PRODUGT SPEGIFIGATIONS
2. SCHEMATIC DIAGRAM
3. WIRING DIAGRAM
4. TIMER CYCLE GHART
5. COMPONENT OPERAilON AND REPAIR
6. TROUBLE SHOOTING
7. PARTS LIST AND DIAGRAM
SPECIFICATION
M O DE L
Ratinq
Motor (HP)
Motor(Amos)
HeaterWattaqe
Wash
TotalAmre (Load Rated)
DDW1802 and
ELECTRICAL
120V60Hz
1t5
1000w
9.24
127"F!5"F
58nt3l
WATERSUPPLY
Suggested Min. Incoming Water 120,r to 150.r
Temperature
49, to 66.
Pressure(PSl)Minimum/Maxim
um
15/120PSI
Connection(NPT)
318"
Consumption(ToilGallons)
3.5r5%
WaterValveFlow Rate(GPM)
1.08GPMt10%
ThermostatContacts
Closeat
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COMPOruEruT
OPERATION
ANDREPAIR
SAFETYPRECATIONS
Always turn off the electric power supply before servicing any electrical
component,makingohmmeterchecks,or replacingany parts.
All voltagechecksshouldbe made with a voltmeterhavinga full scale range of
130voltsor higher.
After serviceis completed,be sure all safety-grounding
circuitsare complete,all
electricalconnections
are secure,and all accesspanelsare in place.
T I M ER
With the timer,user selectsthe variouscleaningcyclesof the dishwasher.The
timer controlsall the electricalfunctionsof the dishwasherin all stagesof each
cycle.All functionscan be tracedon the chart.Diagramprovidedin this service
m a n ua l .
To Test The Timer
lf the timer is suspectedof faultyoperation,referencetimer chart and electrical
schematicdiagramand proceedas follows:
1. lndex the timer to the first incrementof the normalcycle,which is a drain
period.
2. lf the pump motorfails to operateduringthe first cycle increment,check for
powerat the pump motorconnectorblock,if there is no powercheckthe door
latch switch,if there is power,check the pump motor as describedin this
section.
3. lf the pumpmotordoes operate,let the timermotoradvancethe timerthrough
the drain incrementto determineif the timer motor and drive train are fully
operative.
4. Let the timer advance,or index it forwardto the portion of the cycle in
question.
5. lf a componentcontrolledby the timerfailsto functionas the timeradvances
throughthe cycle,checkfor voltageat the timerterminals.lf the checkvoltage
is suppliedto the component,check the componentas describedin this
section.
Continuitythrough timer contacts,other controls,and wires can also be
checkedwith an ohmmeterwith electricalpowerdisconnected.
lf the timerscontactsfail to close in the sequenceshownon the timer chart
are burned(have resistancemeasurablewith an ohmmeter),or if timer does
not advanceautomatically,
replacethe timer.
To ReplaceTimer
1. Disconnect
dishwasher
fromelectrical
supply.
2. Remove
thetimerknob.
Figure1
Figure2
Removethe screwswhich lockingthe controlpanel{Seefigr.rre't).Rernovethe knob and
unscrewthe two screwswhichiockingthe timer on the controlpane!"{SeeFigure2.)
Takedownthe darnagedtimer and insbll a new tirner,revers6proceduresto cornplete
Figure 3
Figure 4
DOOR LATCHAND SWITCI.IA$SEIIilBLY
Tire latch and switch are located in the docr assembly behind the control panel. The
dishwasherwill notoperateuntiltlre door is closed;tfre latchengagesthe door catch.
I'o lresf Or ReplaceDoor Switch.
1. Disconnectdishwasherfrom electricalsupply.
2- Renroves€re$/ssecu*rg thecontralpaneito the innerdaor {see Figure1}.
3. Removewire leadsfrorn latch switcfi.
4, Useohrnrneterand checkswitchfor ccntinuitu
5. lf the $/vitchtests is goodCheckdishwashereiectricalpowef.
Citeck lo see if tirner ls defective"
lf switchis defectiveremovedoor svrkchfrom latch assennbly.
6. lnstall new switcirand reyerceproceduresto cornpleterepairs.
To ReplaceDoor LatcttAssembly
1. Disconnectdishwasfrerfrorndectricalsupply.
2. Rernovescr€wssecuri*gtjhecon rol panelto the irrnerdoor.
3. Rernovewire bads from dsor lakh and rernovescrewssecuringdoor latchassemblyto
innerdoor.{$ee Figure5.)
Figure 5
4. lns(allnew door latch assemblyand reverseproceduresto cornpleterepairs.
FLOATSWITCHASSEMBLY
The water fioat assemblyis locatedin the nightlower side of the dishwasher{the
portablelocatedbehind the lower front crosspiece).When too much water enter
the dishwasher, the water will enter the float supportthroughthe overflowplpe,
the float will make the floatingswitchacts,the electricalsupplyto the water vatue
willdisconnectedand the drain purnpkeep on working.
lf the switchfails to operate.check the following:
. Looseconnectionat the switchterminal.
. Switch not installedproperly.
. Warpedstem on float, not contactingthe actuatorblade.
. Floatsupport restrictsfree float movernent.
. Checkif the float supportis cracked.
. Food or foreign material restrictinEfree float rnovernent.
.lf the rubber
Figure 7
To Remove Or Rrylace Floaf Swfch
1. Dlsconnectdishwasherfrom ebctrical supply.
2. Rernoveelectrical leads to float switch.
3" Take down the switch ftorn float support4^ Insbllnewfloat$vitchandreverseprocedures
repairs{$eefigure6}
ts co'mp{ete
TROUBLESHOOTING
The troubleshootingcheek list is common for all dishwashermodels.
They use differentpartsto accomplishthe samething and diagnosis will
remainsimilar.
When a problem arises,and a possible cause is listed, follow the test,
remove or replace proceduresas outline in this service manual. The
wiring diagram, shematic and timer cycle chat is a necessity when
makingelectricalchecks.In most casesan ohmmeterwill handleall the
tests necessary.
For checking any particularcycle of operation,it absolutely necessary
that the cycle be set up as outlinedin the productowner'sguide.
SYMPTOM
CHECKTHE
FOLLOWNG
Dishwasher will
not efuse(blow nor tripped)
rSupply line receptacle,wiring
operationwhen tum on
harness.
oTimer(contactsopen or burnt).
.Motor
(inoperative, check
resistances).
oDoorsuritch(open contacts)
oDoor latch not making contact
with door switch.
Dishwasherstop washing o Overflowoccur.
but draining
Water can't pour out from
float support when pull
out the rubber cao.
Dishwasherruns but not
heat
Dishwasherwill not stop.
o Hole in the float supply is
jammed.
.heater elernent(open).
oTimercontacts(open or burnt).
oWiring or terminal (bumt or
broken).
. Thermostatis closed.
rTimer motor (inoperative).
rWiring or terminal (burnt or
broken).
oTimer(open or burnt contact).
oDefectivedoor safety suritch.
Dishwasher runs with
door ooen
Motor hums but will not .start winding(open).
.Motor (bad bearings or locked
start or run.
rotorlMotor trips out on in .Start relay not dropping out.
terminal thermal overload .lmproper voltage.
protector.
oSealfaces binding.
rMotor shaft binding.
oMotorwindingsshorted.
rGlass or foreaonitems in oumo.
REMENDY
Replacefuse or reset breaker.
Repairor replace.
Replacetimer.
Replacemotor.
Replacedoor switch.
Replace or adiust to make
contact.
Check the reason of overflow
pull out the rubber cap wait for
a minutelet water oour out.
Suckwith dust cleaneror other
let water pour out.
Replaceheaterelement.
Replacetimer.
Repairor replace.
Reolace.
Replacetimer.
Repairor replace.
Replacetimer.
Replacedoor safety switch.
Replac€motor.
Replacemotor.
Replacestart relay.
Checkvoltage.
Repairor replace.
Repairor replace.
Repairmotor.
Cleanand cleararea.
Repeated
cycles
dishwasher eTimer(contactsopenor burnt)
rMotor
(inoperative, check
resistances).
Timer does not advance .Timer motor (stalledor open).
automatically.
rCheck timer for power to timer
motor.
oTimer shaft binding or knob
interferenceto escutcheon.
Dishwasher will not fill oWatersupply turns off.
with water.
rDefective inlet valve.
rCheck
valve screen for
obstructions.
rDefective fl oat switch.
rTimer contacB (openor burnt).
eWirinq(brokenor burntl.
lncompletewaterfill.
oLow water pressure.
oClogged water inlet valve
screen.
rTimer advanced past start of fill
cycle.
.Heavy water supply usage
elsewherein home,
rKinked or restricted fill hose,
water inlet valveto fill tunnel.
Too much waterfill.
.Water inlet fill valve defective.
oTimercontacB(openor burnt).
.Float arm binding or out of
adjustment.
oPossibilitycustomer/user
tumed
timer pastdrain cycle.
Dishwasherwill not pump oDrain pump is restricted.
out.
oDamagedimpeller.
oWiring or terminal (contacts
open or burnt).
Water siphons out.
.Drain hose loopto low.
oDrain line connectedto a floor
drain not vented.
Water leaks.
.Spray arm not rotatingor split.
Poor wash ability.
Replacetimer.
Replacetimer.
Replacetimer.
Replacetimer.
Repairor adjust.
Turnwatersupplyon.
Replaceinletvalve.
Disassemble
and cleanscreen.
Replaceswitch.
Replacetimer.
Repairor replace.
Minimum water pressure of
1sP.S.r
Cleanwater inletvalvescreen.
Instruct customer/userto turn
timer dial to start indicator
mark.
Use dishwasher when water
usageis at a minimum.
Correctas needed.
Replacewater inletfill valve.
Replacetimer.
Repair,adjust or replace.
Instruct customer/user.
Clear restrictions.
Replacedrain pump.
Replacetimer.
Moveto properheight.
Install vent air gap at counter
top.
Check for proper rotation or
replacespray arm.
O Overchargeof water.
Check and correct for proper
fill.
oTubseal (torn,worn or loose).
Replacetub seal.
oDishwasher door not sealing Adjust door latch assembly
properly.
and/or strike.
oDishwasheris not level_
Level dishwasherproperly.
oOverburden (wrong type of Instructs customer/user.
detergent).
oHoseclamps loose.
Tightenall clampssecurely.
.Heater element mounting nuts Tightenthe nut.
loose.
oWaterseal leaking.
Use a new water seal.
oO-ringis not in position.
Adjust the ring or replace a
oMotor and pump assembly not new.
seated proper in tub liner bottom. Replaceseal.
.Spray arm not rotating.
Checkfor proper rotation.
olmproper loading of dishes, Instructs customer/user on
pans and other.
proper loading per owner's
guide.
.Detergent dispenserinoperative. Repairor replacedispenser.
rlnsufficientamountof detergent. On proper amount of fresh
Orthe detergentis old.
deter gent to use.
rDamaged or the impeller is Replacepumpassembly.
broken.
Incomingwater temperature of
.Detergent not dissolve.
140"F is required to proper
dissolve deteroent.
Poordryingof dishes
olmproperloadingof dishes,pots
and other.
.Heatingelement(open).
olncomingwater temperaturetoo
low,
rWiring or terminal (broken or
burnt).
Detergent cup will not
open.
oCup binding
oRoll pin retainer or shaft broken.
oDefective bi-metal.
rTimer contact (ooen or broken).
Door latch damaqed.
Door will not lath.
Rinseagentliguidwill not
eject.
.Electromagneticvalve defective.
rRinse agent dispenser not
mountedcorrectly.
.Plunger stuck or held in closed
oosition^
Rinseagentliquid leaks.
ocontainercrackeror broken.
oDefectiveseal on plunger.
oOverfilling container.
Noisypumpassembly.
.lmpellers not properly shimmed
or rubbing.
Dishwashercontinues to
fill or continues to till
even though in case of
there is no voltageto fill
valve.
Detergent
left
in
dispenser.
Softener leaking
Leakingform air inlet.
lnstruct
customer/usr
on
proper loading per owner' s
guide.
Replaceheatingelement.
lncoming water temperature of
140"Ffor best drying results.
Replaceor repair.
Repairor replace.
Replacepin, retaineror shaft.
Repairor replace.
Reolacetimer.
Replacedoor latch.
Replacevalve.
Mount securelyto rear of inner
door panel.
Free plunger or adjust plunger
release.
ReplaceGonEilner.
Replaceplunger.
Follow instructions in owner's
manual.
Use shim gauge furnished in
impeller and seal kit, when
sealsare properlyshimmedthe
impellers will be in correct
operating position.
Inspect and correct.
Cleanout sump area.
Replacemotor.
oPump perts not properly
installed.
rDebris in bottom of tub sump
area.
oDefectivemotor bearinqs.
oSomething (dart or foreign Clean water inlet valve or
material) under diaphragm in replace.
water inlet valve.
rDefectivewater inlet fill valve.
Replacewater inlet valve.
oDetergentcup held or blocked
by largedishes.
.Disp€nser wet when detergent
was added.
oSoftenerbroken.
oSoftenernut loosen.
.Air inlet nut loose.
oAir inlet installuo side down.
On proper loadingdishes.
Instructs customer/user.
Faeplace
sonener.
Screw down softenercao.
Screwdown air inlet nut.
Reinstallair inlet orooerlv.