Troubleshooting Guide - Enerpac ZE3 Serie Hoja De Instrucciones

Problem
Pump will not start Fault condition
Pendant does not function Pump in local mode
Pendant damage
Motor stops under load Low voltage
Electric valve will not No power or wrong voltage
operate Solenoid cable disconnected or damaged
Valve out of adjustment
Pump fails to build Low oil level
pressure or less than full Relief valve set too low
pressure External system leak
Internal leak in pump
Internal leak in valve
Internal leak in system component
Pump builds full pressure, Load greater than cylinder capacity at full pressure
but load does not move Flow to cylinder blocked
Cylinder drifts back on its External system leak
own Internal leak in a system component
Non-load holding valve used
Single-acting cylinder will No load on a "load return" cylinder
not return Return flow restricted or blocked
Locking valve used
Valve malfunction
Cylinder return spring broken
Double-acting cylinder will Return flow restricted or blocked
not return Locking valve used
Valve malfunction
Pump runs hot Advance or retract flow restricted
High ambient temperature
Pump pressure goes Cylinder comes to a sudden stop (i.e., strokes out)
above "HI PRESS" value
AUTOMODE does not Pressure transducer installed in pressure port other
work correctly with VE33 than GA
or VE43 valves
After boot-up LCD shows Pressure switch circuit is open and press transducer
"P switch open" is installed
LCD display shows Loose jumper on power board
"FILTER"
* For LCD versions, also see sections 6.2 Fault Conditions, 6.3 Warning Conditions and 6.4 LCD Menus.
Trouble-shooting Guide
Possible Cause
13
Action*
See section 5.0 Operation and 6.2 Fault Conditions for details
See Section 6.4G, Local Menu
See Section 6.4I, Diagnose Menu
See authorized service center
See Section 6.2B and 6.3A
Turn off other electric loads
Use heavier gauge extension cord
Connect to correct power source per pump name plate
Connect, repair, or replace cable
See authorized service center
Add oil per section 4.4
Adjust per section 5.7
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
Set user adjustable relief valve 200 psi above "HI PRESS" valve
to redirect excess oil flow.
Move pressure transducer to "GA" (see section 8.1). Change
microprocessor setting to "GB" (see Authorized Service
Center).
Check power board pressure switch jumper for being lose or
missing (see Fig. 11).
Remove pressure switch or pressure transducer from pump.
Check power board for lose or missing jumper at filter (see fig.
11).