User Instructions
Section 7
Troubleshooting ______________________________________________
Troubleshooting Guide—For qualifi ed personnel only
Symptom Probable Cause Correction
Unit will not start, control 1. Unit not wired correctly. 1. Check wiring.
display does not light.
2. Disconnect switch OFF. 2. Turn disconnect ON.
3. Blown fuse. 3. Check disconnect fuses and
120V fuse on terminal block
(blown fuse indicator will light
if fuse is blown).
4. Wrong voltage. 4. Check supply voltage and
unit’s rated voltage.
Control display lights, 1. Cooling water off, or below 20 psi. 1. Open cooling water valve,
unit will not start. (CMX-250 models only) check to assure pressure is
above 30 psi.
2. Pump motor overload. 2. Determine problem and press
pump reset.
3. System above temperature 3. Allow unit to cool below 260°F
limit of 260°F. (190°F on
and press .
CMX-180 models)
Unit stops while running. 1. Cooling water drops below 20 psi. 1. Check cooling water valve,
check to assure above 30 psi.
2. Pump motor overload. 2. Determine problem, press
pump reset, and restart.
3. System exceeds temperature 3. Allow unit to cool below 260°F,
limit of 260°F. (190°F on
press , and restart.
CMX-180 models)
Low Water Pressure Indicator 1. Cooling water below 20 psi. 1. Check that pressure is above
illuminated. (CMX-250 models only) 30 psi.
continued ➔
31
RESET
RESET
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