Electrolux W475 - Page 75

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Door and door lock
Thedoorlockunlocksthedoor
Theprogrammeunitrequestsdoorunlockingbyapplying0VoninputX92
ofthedoorlockcontroller.
Thefollowingcheckismadepriortounlockingofthedoor:
• No water in drum-input"Level"fromlevelguardB2isclosed=0V
• Drum not turning-pulsefrequencyoninput"Tacho"fromrotation
sensorB3islessthan0.4Hz.
Whentheaboveconditionsaremet,thedoorlockcontrolleroutputsan
openingpulseonoutputD0tothedoorlockactuator/coil,whichthen
unlocksthedoor.MicroswitchesS4aandS4bnowinterrupttheactuator/
doorlockandtheI/Ocard1relaysloseallvoltagetopreventthemotor
fromstarting(interlocksignalonmotorcontrollerinputX302).Thedrain
andwatervalvesofthemachinearenowdisabledandtheheaterandmo-
tor cannot be switched on.
 1. ProgramunitA1
 2. TemperaturesensorB1
 3, LevelswitchB2
 4, LevelswitchB4
 5. DisplayA2
 6. HeaterelementE1-3
 7. MotorcontrolU1
 8. RotationsensorB3
 9. DoorlockmoduleA41
 10. VoltageunitA5,PSU
 11. I/Oboard
 12. Watervalves
 13. Drainvalve
 14. Powersupply
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