Lukas ZPH 3/4 - Manual (Page 22)

22
Troubleshooting 11.
Problem Cause Remedy
Connected device
does not move, moves
only slowly or moves
intermittently.
Fluid level in the hydraulic
tank too low
Add hydraulic fluid up to
max. fill level.
Discharge valve open Close discharge valve.
Hose line not properly
connected or damaged
Check connection of the
hose line and reconnect it
if necessary.
Load on the device
too high
Use a different device.
Air in the hydraulic system Bleed system as described
in the chapter “Bleeding
the pump”.
Defect on the device Heed the specifications
of the separate operating
instructions of the
device.
Connected device moves,
but does not hold pressure
or does not render the
specified performance.
Hose line not properly
connected or damaged
Check connection of the
hose line and reconnect it
if necessary.
Leaking seal Locate the leak and have
the hand pump serviced by
an authorised dealer, by
personnel specially trained
by LUKAS or by LUKAS
directly.
Internal leakage of the
pump
Have the hand pump
serviced by an authorised
dealer, by personnel
specially trained by LUKAS
or by LUKAS directly.
Device does not move
back into the starting
position, moves
incompletely back toward
the starting position or
moves more slowly into
the starting position than
normal.
Discharge valve closed Open discharge valve.
Fluid level in the hydraulic
tank too high
Reduce hydraulic fluid
down to max. fill level.
Loose hydraulic coupling Check all couplings and
retighten them.
Enclosed air in the system Bleed pump as described
in the chapter “Bleeding
the pump”.
Line length too long Use shorter lines.
Use hydraulic fluid with
a different, more suitable
viscosity.
Defect on the device Heed the specifications
of the separate operating
instructions of the
device.