Service manual

HEC-Series Service Manual
TROUBLESHOOTING
10/21/01
8-7
Symptom: Motor overload protectors stop machine. (Cont.)
One of the 2.5 amp fuses in the switch box
stops machine.
Check compressor crankcase heater, coil of fan
contactor and PLC for a ground. Repair or
replace defective part. Replace fuse. Make sure
the compressor crankcase heater is energized for
at least two hours and there is no liquid
refrigerant in the crankcase prior to running the
machine.
A machine fault #16 has occurred.
NOTE: If cutter motor circuit breaker, pump
motor circuit breaker, compressor motor
overload, or thermal protection shuts the
machine off (HEC-30 and HEC-40 only), the
PLC will lose power and a power failure, fault
#16, will be indicated.
Enter the troubleshoot mode and identify the last
occurring fault. See Fault Identity, Section 6.