Inhoudsopgave
Advertenties
Problem
Pump will not start
Pendant does not function
Motor stops under load
Pump fails to build pressure or
less than full pressure
Pump builds full pressure, but load
does not move
Cylinder drifts back on its own
Single-acting cylinder will
not return
Double-acting cylinder will not
return
Pump runs hot
Troubleshooting Guide
Possible Cause
No power
Circuit breaker tripped
Low voltage
Motor brushes worn to end of life
Power switch not in "remote" position
Pendant damage
Low voltage
Low oil level
Relief valve set too low
External system leak
Internal leak in pump
Internal leak in valve
Internal leak in system component
Load greater than cylinder capacity at full pressure
Flow to cylinder blocked
External system leak
Internal leak in a system component
Non-load holding valve used
No load on a "load return" cylinder
Return fl ow restricted or blocked
Locking valve used
Valve malfunction
Cylinder return spring broken
Return fl ow restricted or blocked
Locking valve used
Valve malfunction
Advance or retract fl ow restricted
High ambient temperature
Action
Connect power
Push circuit breaker button
Turn off other electric loads
Use heavier gauge extension cord
See Section 6.4, Motor Brush Replacement
Move switch to "remote" position
Repair pendant
See authorized service center
Turn off other electric loads
Use heavier gauge extension cord
Add oil per section 4.4
Adjust per section 5.4
Inspect and repair or replace
See authorized service center
See authorized service center
See authorized service center
Reduce load or add cylinder capacity
Check hydraulic couplers for full engagement
Inspect all hydraulic connections and replace or repair
See authorized service center
See authorized service center
Add load
Check couplers for full engagement
Run motor while retracting
See authorized service center
See authorized service center
Check couplers for full engagement
Run motor while retracting
See authorized service center
Check couplers for full engagement
Install heat exchanger for hydraulic oil
7
Advertenties
Inhoudsopgave
