WARN
15
TROUBLESHOOTING
ALWAYS disconnect power supply before removing any guards or covers and
before servicing this pump. Failure to do so many result in serious injury or death.
WARNING
Problem
Cause
Cure
Motor does not start or
motor stops under load
No power being supplied to
motor
Check voltage at power
supply
Voltage supplied to motor is
too low
Check voltage at power
supply
Improper extension cord
used
Replace extension cord with
a properly rated extension
cord
Damage to pendant,
transformer or relay
Inspect and replace as
necessary
Cylinder will
not advance or
advances slowly
Reservoir fill plug is blocked
or incorrect
Remove the unvented fill
plug and replace with vented
fill plug or clean the vented
fill plug
Insufficient oil level
Add oil according to the
“adding approved hydraulic
oil’ section in this manual
Improper oil used or oil is
dirty
Replace oil with an approved
type as listed in the “adding
approved hydraulic oil’
section this manual
Pump valve lever is not fully
in the closed position
Rotate the pump valve lever
to the fully closed position
Pump filter screen is clogged Clean the filter screen
according to the “draining
and flushing” section in this
manual
Hydraulic couplers are not
properly engaged
Check all couplers and
ensure they are fully seated
and secure
Hydraulic oil leak – external
Replace hose or couplers
Hydraulic oil leak – internal
Return to factory for repair
External relief valve set too
low
Tighten relief valve as
needed
Erratic cylinder movement
Air trapped in the hydraulic
system
Bleed air from the system
according to the “removing
air from the system” section
in this manual
