Safety-Kleen Systems, Inc.
Models 90, 91, and 94 Manual Aqueous Parts Washers
Support Manual
Page
10
of
14
3. Ensure the pump cord is connected to the control
box (top rear)
4. With the unit plugged in, push the GFCI “Reset”
button and check for the red indicator light. If there
is no light, return the SK #2387 for GFCI
replacement.
5. Make sure that the pump circuit breaker “on/off”
switch is on. Check for pump operation again by
pressing the black push button or lamp switch.
•
If the GFCI or pump circuit breaker trips unplug the pump cord from the control
box, press the GFCI “Reset” button, and switch the pump circuit breaker to the
“on” position.
•
If the GFCI or pump circuit breaker trips again, the control box or GFCI is faulty.
Replace the unit.
6. Plug the pump electrical cord back into the control box (disconnected in step 5). If
the GFCI or pump circuit breaker trips, replace the pump.
Pump is running, but there is no solution flow, or pump is surging
1. If the pump is running, but no fluid is passing or pump is surging, check to make
sure that there is enough fluid in the drum.
•
Add 5 gallons of water, if necessary
•
Press the GFCI Test button, wait 5 seconds and then press the GFCI Reset
button
2. Check hoses for a blockage or crimp.
Level One Repairs
Freeing the Impeller:
1. Remove the sink assembly so that the HPM can be removed from the drum. Place it
on an absorbent wipe and on a flat hard surface.
NOTE: BE CAREFUL, HEATER
MAY BE HOT.
2. Loosen the pump retaining screw and pump bracket, if
present.
3. Slide the pump from the main bracket.
