Lukas SP 512 - Manual (Page 35)

35
11. Troubleshooting
Trouble Control Cause Solution
Spreader 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 fl uid level
in the supplying
pump Insuffi cient
hydraulic fl uid in
the pump Top up hydraulic fl uid,
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
fl uid Hydraulic fl uid
not adapted to
the application
situation Hydraulic fl uid
must be replaced
(see chapter
“Recommended
Hydraulic fl uids”)
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 fl uid leak
on the hoses or the
fi xing-ins Are the hoses
defective? Leak, possible
damage Replace hoses