User guide

14 Troubleshooting
If the defects cannot be repaired, please contact an authorised LUKAS dealer or the
LUKAS service department under following address:
LUKAS Hydraulik GmbH,
Weinstraße 39, D-91058 Erlangen, PO Box 2560, D-91013 Erlangen,
Service phone [phone],
FAX [phone].
16
Trouble Check Cause Remedy
Hoses cannot be Pressurized Relieve pump
coupled pressure
On actuating blades Hoses correctly Air in the hydraulic Thoroughly vent
move slowly or by connected power system pump unit: see 9.1.1
jerks pack operating
No pressure build-up Not enough oil in hand Refi ll oil and vent
or motor pump. system (see opera
ting instruction
9.1.1)
Star grip doesn‘t return Return spring is Ask authorized
to middle position damaged or return dealer or LUKAS
when released mechanism is dirty themselves for
repair
Oil leakage out of Untightness, eventually Replace hoses
hoses or hose fi ttings damages
Surface of hydraulic Contact with Change hoses
hoses is dissolved agressive fl uids
Blades spread up at Torque of the center For retightening,
tips to a gap of more bolt nut is unsuffi sient see 13.2.1
than 3 mm even if not
fully loaded
Leakages on the Seal defective piston Replacement of
piston rod rod seals by authorized
dealer or LUKAS
themselves