Lukas LS 330 Fi - Manual (Page 21)

21
10.3 Repairs
Since repairs to the electrically insulated rescue tools must always be concluded by testing
and confirmation of the minimum electrical arcing resistance, repairs may only be carried out
by authorised specialised dealers or by LUKAS directly.
Troubleshooting 11.
Trouble Control Cause Solution
Blade arms move
slowly or jerkily when
activated
Are the hoses
connected
properly?
Air in the hydraulic
system
Deaerate pump
system
Does the pump
unit work?
Device doesn’t
perform at its given
power
Check the
hydraulic fluid level
in the supplying
pump
Insufficient
hydraulic fluid in
the pump
Top up hydraulic fluid,
deaerate
Following release,
the star grip doesn’t
return to the central
position
Cover damaged
or star grip hard to
move?
Damage to the
torsion spring for
reset
Repair by an
authorised dealer, by
personnel specially
trained by LUKAS, or
by LUKAS itself
Soiled valve or
star grip
Defective valve
Other mechanical
damage (e. g. star
grip)
with mono-coupling-
system: Hoses
cannot be coupled
Pressure too high
(e.g. caused by
too-high ambient
temperature)
Set hydraulic pump
to pressureless
circulation
Coupling defective Coupling needs to be
replaced immediately
with mono-
coupling-system:
It is frequently not
possible to couple
hose assemblies
Control the
degree of viscosity
and application
temperature of
the used hydraulic
fluid
Hydraulic fluid
not adapted to
the application
situation
Hydraulic fluid
must be replaced
(see chapter
“Recommended
Hydraulic fluids”)
Coupling defective Coupling needs to be
replaced immediately
with quick-
disconnect-coupling-
system: Hoses
cannot be coupled
Is the pump
working?
Pressurized Relieve pump
Coupling defective Coupling needs to be
replaced immediately
Hydraulic fluid leak
on the hoses or the
fixing-ins
Are the hoses
defective?
Leak, possible
damage
Replace hoses