CHECKOUT
(INTERLOCK SYSTEM)
Note: All electrical checks should be made by qualified service personnel.
If it is determined that the proper power is being applied to the machine's incoming terminal
blocks, then further check of the interlock system should be made.
Note: This checkout would only be performed if none of the systems of the machine
operate. This would mean that none of the switches, when depressed, will perform
the function noted for that switch.
Example: Drain, fill, start switches.
Proceed with checkout.
1. Remove power to the machine by turning circuit breaker that protects the machine to OFF position.
Note: It may be necessary to disconnect the door springs to prevent door from closing when inner
door is removed.
2. Open the front door and remove screws holding inner panel of door.
3. Disconnect one wire from the switch closest to the door latch and using an ohmmeter, depress the lever of the
switch and check that there is continuity across that switch. If there is no continuity, replace switch.
4. Check second safety switch located in top right hand corner of door, viewed with inner door off. Remove wire
from one side of the switch and check for continuity with ohmmeter when switch is depressed. If there is no
continuity, replace switch.
5. Replace inner door panel.
6. Apply power and check operation.
