Instruction Manual
PEM3024 Power Unit - V1.0
www.durapac.com
Page 8 of 9
7.0
Troubleshooting
Problem
Cause
Solution
Motor will not start
Inadequate or faulty
electrical supply
Check the condition of the power unit’s
power cord.
Check the condition of extension cords
Check for tripped circuit breaker. Be sure
breaker is of adequate size
Contact a qualified electrician for any
necessary repairs
Noisy operation
Air trapped in system
Check all points where air may leak into
the system
Refer to 6.2 – Bleeding Air from the
System
Power unit reservoir too
full
Drain fluid to correct level
Low fluid level in power
unit reservoir
Refer to 6.1 – Adding Hydraulic Fluid
Fill and bleed the system
Power unit oil is over-
heating
Oil viscosity is too high
Refer to 6.3 – Changing Hydraulic Fluid
Refill with a good quality hydraulic oil
High pressure leakage on
upper pressure plate
Tighten plug
Low fluid level in power
unit reservoir
Refer to 6.1 – Adding Hydraulic Fluid
Fill and bleed the system
Power unit runs but
will not pump oil
Power unit is not primed
Run power unit a few minutes tipping
from side to side
Externally adjustable
relief valve is not
correctly set
Reset the relief valve to appropriate level
Damaged o-ring
Send to a Durapac authorised service
centre for repair
Defective control valve
Send to a Durapac authorised service
centre for repair
Power unit does not
reach rated capacity
Low fluid level in
reservoir
Secure load by other means.
Depressurise power unit and hose,
remove application, then fill and bleed the
system
Leaking system
components
Repair or replace as necessary
Poor performance
Fluid level in power unit
is low
Secure load by other means.
Depressurise power unit and hose,
remove application, then fill and bleed the
system
Application does not
extend, move or
respond to
pressurised fluid
Overload condition
Remedy overload condition
Loose couplers
Tighten couplers
Faulty couplers
Replace couplers
Malfunctioning power
unit
Contact a Durapac authorised service
centre for repair
