Enerpac GPE Series User Manual

6
1. Unscrew the 10 bolts holding the coverplate to the reservoir
and lift the pump unit out of the reservoir. Be careful not to
damage the filter screen.
2. Pour all oil out of the reservoir.
3. Thoroughly clean the reservoir with a suitable cleaning agent.
4. Remove the pick-up filter for cleaning. Clean the screen with
solvent and a soft brush. Reinstall the filter.
5. Reassemble the pump and reservoir, installing a new
reservoir gasket.
6. Fill the reservoir with clean Enerpac hydraulic oil. The
reservoir is full when oil level is at the top mark (full mark) of
the sight gauge.
6.3 Changing the (optional) Filter Element
A return line filter may be ordered as an accessory to the pump.
The filter element should be replaced every 250 hours, or more
frequently in dirty environments. The filter manifold is equipped
with a 25 psi (1,7 bar) bypass to prevent over pressure rupture if
filter plugging occurs. Filter element replacement part number is
PF-25.
7.0 TROUBLESHOOTING (see Trouble-shooting
Guide)
Only qualified hydraulic technicians should service the pump or
system components. A system failure may or may not be the result
of a pump malfunction. To determine the cause of the problem, the
complete system must be included in any diagnostic procedure.
The following information is intended to be used only as an aid in
determining if a problem exists. For repair service, contact your
local Authorized Enerpac Service Center.
Trouble-shooting Guide
Problem Possible Cause
Pump will not start No power or wrong voltage
Motor stalls under load Low voltage
Electric valve will not operate No power or wrong voltage
Valve out of adjustment
Pump fails to build pressure External system leak
Internal leak in pump
Internal leak in valve
Internal leak in system component
Pump builds less than full pressure Relief valve set too low
External system leak
Internal leak in pump
Internal leak in valve
Internal leak in system component
Pump builds full pressure, but load does not move Load greater than cylinder capacity at full pressure
Flow to cylinder blocked
Cylinder drifts back on its own External system leak
Internal leak in a system component
Single-acting cylinder will not return Valve malfunction
Cylinder return spring broken
Return flow restricted or blocked
No load on a "load return" cylinder
Double-acting cylinder will not return Valve malfunction
Return flow restricted or blocked

Enerpac GPE Series Specifications

General

Brand	Enerpac
Model	GPE Series
Category	Water Pump
Language	English