PKD24B INSTALLATION & OPERATION MANUAL Rev. 11.09
Page
4
2.
Cam switch 7 controls the pump motor. The pump motor comes ON at the beginning
of the operational cycle and continues to run until the end of the drain function
(controlled by cam switch 3), at which time it turns off for about eight seconds
allowing time for the machine to refill enough to avoid running the pump dry before
the pump motor restarts and runs to the completion of the operational cycle.
The pump motor runs the pump for the 57-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 48-second rinse cycle.
3.
Cam switch 3 controls the drain function. At the end of the 57-second wash cycle,
cam switch 3 energizes the drain valve solenoid allowing the pump motor to drain 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 valve solenoid on the water supply to flush and fill
the machine. At the end of the wash cycle the drain valve is opened, the pump motor
continues to run (to pump the wash water out through the drain), and the Flush
function begins. At first, flushing the machine because the drain valve is still open,
then—with the drain valve closed and the pump motor 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.
5.
Cam switch 2 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.
See section
4.1.1
Cam Adjustment
6.
Cam switches 5 and 6 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. See section
4.1.1
Cam Adjustment
7.
Cam switch 8 operates the optional sustainer heater. This cam assures that the
sustainer heater only turns on when the glasswasher is
not
in a cycle. This prevents
the machine from drawing too much electrical current at any one time.