19
13 Troubleshooting
If the defects cannot be repaired, contact an authorised LUKAS dealer or the
LUKAS service department.
The address of the LUKAS service department is:
LUKAS Hydraulik GmbH,
Weinstraße 39, D-91058 Erlangen; PF 2560, D-91013
Erlangen Kundendienst Tel 09131/698 348; Fax 09131/698 353.
Trouble
Check
Cause
Remedy
Hoses cannot be
coupled
Pressurized
Relieve pump
pressure
Blades move slowly
or by jerks when
actuated
Hoses correctly
connected, power
pack operating
Air in the hydrallic
system
Thorougly vent
pump unit
No pressure build-up
Insufficient oitl in
the hand or motor
pump. Pump not
ventilated after oil
change
Refill oil an
ventilate the
system
Star grip does not
return to the middle
position when
released
Damage of the
return spring for
resetting, fouling
Repair by an
authorized dealer
or directly by
LUKAS
Oil leakage out of
hoses or hose fittings
Untightness,
possible
damages
Replace hoses
Surface of the
hydraulic hoses is
dissolved
Contact wirh
aggressive media
Replace hoses
Blades spread up at
tips to a gab of more
than 3 mm (LSI511
and LSI55) and more
than 5 mm (LSI501
and LSI530)
respectively
Torque of the
central bolt nut is
insufficient
Retighten, see
chapter 12.2.1
Leakages: leaks at
the piston rod
Defective piston
rod seal
Changing the
seals by an
authorized dealer
or directly by
LUKAS
