The pump motor runs the pump for the 45-second wash cycle, then pumps the water out
through the drain, turns off for about 8 seconds (allowing the machine to refill with
clean rinse water) and then runs the pump for the 30-second rinse cycle.
3. Cam switch 3 controls the drain function. At the end of the 45-second wash cycle, cam
switch 3 energizes the drain solenoid allowing the wash water out of the machine. Cam
switch 3 also increments the rack counter by one each cycle.
4. Cam switch 4 controls the water solenoid valve on the water supply to flush and fill the
machine. At the end of the wash cycle the drain solenoid valve is open and drain
begins, the pump motor continues to run. About the middle of the drain cycle, Cam 4
opens the fill solenoid valve and the flush function begins flushing residual detergent.
At the end of drain cycle, drain solenoid valve closes and the pump motor is stopped—
the machine begins to fill for the rinse cycle. Once the machine has refilled
sufficiently, the pump motor restarts carrying out the rinse portion of the cycle as the
filling of the wash tank completes. This can be adjusted as necessary for water pressure
situation.
5. Cam switch 5 controls the detergent pump and turns ON about 5 seconds after the
operational cycle is started and runs for a few seconds to provide sufficient detergent
for the wash cycle. This cam can be adjusted as necessary for proper detergent dosage.
6. Cam switches 6 and 7 control the sanitizer and rinse pumps respectively. They turn ON
at the beginning of the rinse cycle and run for a few seconds to provide sufficient
sanitizer and rinse aid for the rinse cycle. These cams can be adjusted as necessary for
proper chemical dosage.
7. At the end of the cycle cam switches 1 and 2 open (de-energize) stopping the cycle.
The Start/Stop relay is held energized by its normally open contact until the doors are
opened. Opening the doors de-energizes the Start/Stop Relay, which will then cause a
new cycle to start when the doors are once again closed.
Note:
Holding the START switch on for a couple of seconds will start a cycle without
opening and closing the doors.
MODEL AH, B & C INSTALLATION & OPERATION MANUAL Rev. 1.00A
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