DEPT.73IA TECHNICAL FLASH ServiceBranchManager Assistant ServiceBranch Manager Call CentreManager QualityEducationLeader T.F.
INDEX 1. PRODUGT SPEGIFIGATIONS 2. SCHEMATIC DIAGRAM 3. WIRING DIAGRAM 4. TIMER CYCLE GHART 5. COMPONENT OPERAilON AND REPAIR 6. TROUBLE SHOOTING 7.
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.
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TIMER CYCLECHART eo g U' E b o o a g o I t = r() o @ rF: E ? = N o @ E rf 6 1 9 6 ; F . r ( ) L # H fE o O i - 5 o I 2 frae o r E b tr betr ^< \., tL - gtbb .I g,p x .-.
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.
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.
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.
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.
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.
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. .