Troubleshooting
Hydraulic Drive System
Before pe rforming any troubleshooting procedures:
1. Follow Pressure Relief Procedure, page 49.
2. Turn main power O FF.
3. A ll ow equipme nt to cool .
Try the recommended solutions in the order given for
each problem, to avoi d unnecess ary repairs. Also,
determine that all circuit breakers, switches, and
controls are properly set and wiring is correct before
assuming there is a problem.
Note
Motor startup is delayed a maximum of 5
seconds from the last time the motor was
turned off to reduce the chance of the motor
overheating.
PROBLEM CAUSE SOLUTION
Loose connections and/or contactor
(CT01) is not closing.
Check wiring between the foll owing
components:
• HCM and contactor CT01
• HCM and fuses F11/F12
Damaged HCM. Replace HCM.
Loose connections and/or contactor
(CT01) is closing.
Check wiring between the foll owing
components:
• motor junction box and CB12
•CB12
• contact CT01 and main
disconnect switch (or terminal
blocks TB06 and TB09)
Electric motor will not s tart or stops
during operation.
Circuit breaker tripped. Reset CB12 within the electrical
enclosure after confirming wiring is
correct and its insulation is intact.
38 334946A
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