Library Imaging System
COMPONENT OPERATION AND REPAIR
SAFETY PRECATIONS
Always turn off the electric power supply before servicing any electrical
component,makingohmmeterchecks,or replacingany parts.,
All voltage checks should be made with a voltmeter having a full scale range of 130 volts or higher.
After service is completed, be sure all
TIMER
With the timer, user selects the various cleaning cycles of the dishwasher. The timer controls all the electrical functions of the dishwasher in all stages of each cycle.. All functions can be traced on the chart.. Diagram provided in this service manual..
To Tegt Tt_eTinier
If the timer is suspected of faulty operation, reference timer chart and electrical schematic diagram and proceed as follows:
1.Index the timer to the first increment of the normal cycle, which is a drain period.
2.If the pump motor fails to operate during the first cycle increment, check for power at the pump motor connector block, if there is no power check the door latch switch, if there is power, check the pump motor as described in this section.
3o If the pump motor does operate, let the timer motor advance the timer through the drain increment to determine if the timer motor and drive train are fully
operative.
4.Let the timer advance, or index it forward to the portion of the cycle in question..
5.If a component controlled by the timer fails to function as the timer advances through the cycle, check for voltage at the timer terminals, tf the check voltage is supplied to the component, check the component as described in this section
Continuity through timer contacts, other controls, and wires can also be checked with an ohmmeter with electrical power disconnected.
If the timers contacts fail to close in the sequence shown on the timer chart are burned (have resistance measurable with an ohmmeter), or if timer does not advance automatically, replace the timer.
To Replace Timer
I Disconnect dishwasher from electrical supply 2.. Remove the timer knob..
