Instruction Manual

38
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.
Hand relief valve closed Open hand relief valve.
Fluid level in the hydraulic
tank too high
Reduce hydraulic uid
down to max. ll 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 uid with
a different, more suitable
viscosity.
Valve block defective Replace valve block
Repair by an authorised
dealer or by LUKAS itself
Defect on the device Heed the specications
of the separate operating
instructions of the
device.
Connected device not
reaching its limit position
Fluid level in the hydraulic
tank too low
Add hydraulic uid up to
max. ll level.
Attention: move the
device back into the
base position before
adding uid!
Usable hydraulic uid
quantity of the pump is
insufcient
Use a different device with
a usable quantity below
the maximum usable
quantity of the pump.
Connected rescue device
does not achieve its
power-related performance
data
Max. permissible operating
pressure of the pump is
not reached
Replace pressure
control valve or have
it recalibrated by an
authorised dealer or
directly by LUKAS.
Fluid leaks on the
hydraulic uid reservoir
(especially at the rell tap)
Due to return ow of the
hydraulic uid from the
device, the maximum ll
quantity of the reservoir is
exceeded
Reduce hydraulic uid
down to max. ll level.
Seals defective Replace seal.
Hydraulic uid with milky
cloudiness
Water or condensation
water in the system
Perform hydraulic uid
change immediately.
In the case of a quick-
disconnect coupling
system: Hose lines cannot
be coupled
System is under pressure Open discharge valve and
bleed device.
Coupling defective Coupling should be
replaced immediately.
Problem Cause Remedy