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07610-003-78-18-N
PLC TROUBLESHOOTING: Green LED lights are
illuminated on the PLC when in operation. The POWER,
OK, and RUN lights indicate that 24VDC power is available
to the PLC and that it is functioning properly. If the RUN
light is out, rst check that the RUN toggle switch located
behind the snap cover panel of the PLC is in the RUN
position.
If the switch is in the RUN position, it is possible that the
operational program of the PLC is corrupted or lost.
Temporary power surges might have occurred. Secure
all power to the machine, wait for 30 seconds, and re-
store power. Verify that the green light is illuminated to the
24VDC power supply immediately to the left of the PLC.
If the RUN light is still off, replace the PLC.
Refer to the illustration below for the designation of each
LED. PLC1 is used for the 44” Electric and Steam units.
An expansion PLC (PLC2) is used in conjunction with
PLC1 for 66” Electric and Steam units. Inputs correspond
to the connections behind the top ip-up panel of the PLC
and are marked I1 through I8. Outputs correspond to the
connections behind the bottom ip-up panel of the PLC and
are marked Q1 through Q8.
NOTE: All outputs are
fused. Q1 and Q2 outputs
for both PLCs utilize 1.0 A
fuses and Q3-Q8 outputs
utilize 0.75 A fuses. When
illuminated, the LED
lights on the front of each
PLC will show the input
from, and the outputs to,
various components as
illustrated here. LEDs that
illuminate on PLC2 that
are marked “NOT USED”
have no bearing on the
operation of the current
warewashers.
UTILIZE THESE SCREWS
FOR PLC REPLACEMENT
UTILIZE THESE SCREWS
FOR PLC REPLACEMENT
STATUS
INDICATING
LIGHTS
INPUTS
OUTPUTS
RUN TOGGLE
SWITCH
TROUBLESHOOTING
MAINTENANCE
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