Fill/Drain Timer -Theory Of Operation - CMA Dishmachines UC65e Installation & Operation Manual

Fill/Drain Timer -Theory of Operation
Fill/Drain Timer Board - Theory of Operation
The new fill/drain timer board has built-in diagnostics.
LED's (1, 2, 3, and 4) illuminate under the following conditions:
a) LED 1 illuminates when power from circuit breaker is ON and booster/fill
switch (service switch) is ON.
b) LED 2 illuminates when machine ON/OFF switch is ON and circuit breaker in ON.
c) LED 3 (Door switch LED) illuminates when door is closed, machine ON/OFF switch is
ON and circuit breaker in ON. LED 3 goes out when door is open.
d) LED 4 only illuminates momentarily when the drain switch is pressed and the machine
ON/OFF switch is OFF.
e) LED 5 (Drain LED) illuminates when the Power from the circuit breaker is ON, the
machine ON/OFF switch is OFF, and the momentary drain switch has been pressed to
start the 50 second drain cycle. The door can be opened during the drain cycle,
closing the door resumes the drain cycle where it left off.
NOTE: LED 5 will illuminate during the fill cycle because the drain pump also runs during
the fill cycle.
f) LED 6 (Fill Valve LED) illuminates when the circuit breaker is ON, the machine
ON/OFF switch is ON (3 second delay), and the door is closed.
NOTE: LED 5 will illuminate during the fill cycle because the drain pump also runs during
every 70 second fill cycle.
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LED's 1, 2, and 3 are illuminated
during a normal wash/rinse cycle.