Lukas HP Cylinders - Manual (Page 25)

25
12. Troubleshooting
Trouble Check Cause Solution
Cylinder piston
moves slowly or
jerkily when activated
Are the hoses
connected
properly?
Air in the hydraulic
system
Deaerate pump
system
Does the pump
unit work?
Cylinder defective Remove the cylinder
from service and
repair it (have it
repaired)
Piston on the cylinder
is not retracting
Quick-stop
function on the
cylinder effective
Let the cylinder piston
extend a little, then
let it retract slowly.
Cylinder defective Remove the cylinder
from service and
repair it (have it
repaired)
Cylinder does not
apply the specified
force
Hydraulic fluid
level in the
supplying pump?
Insufficient
hydraulic fluid in
the pump
Top up hydraulic fluid,
deaerate
Check operating
pressure of driving
hydraulic unit
Pressure supply
has too low
pressure
If possible, increase
max. operating
pressure on the
hydraulic unit to max.
operating pressure
of the cylinder or use
another hydraulic unit
with sufficient max.
operating pressure.
Cylinder defective Remove the cylinder
from service and
repair it (have it
repaired)
Hose lines cannot be
coupled
Pressurised Set hydraulic pump
to pressureless
circulation
Coupling
defective.
Coupling must be
replaced immediately.
Hydraulic fluid leak
on the hoses or the
connections
Are the hoses
defective?
Leak, possible
damage
Replace hoses