Lukas CU 4DVV - Manual (Page 19)

19
8. Troubleshooting
Fault Check Cause Solution
Connected
working equipment
moves slowly
or jerkily when
activated Are the hoses
connected
properly? Air in the hydraulic
system Vent the hydraulic
system
Does the pump
unit work?
Working unit
defective. Consult the
separate operating
instructions for the
working equipment.
The connected
working equipment
does not move
when actuated
and no pressure
indication on
the control table
pressure gauge. Are the hoses
connected
properly? Hose connection
to hydraulic power
pack not made, or
made incorrectly. Connecting hose
assemblies properly.
Does the pump
unit work? Pump unit not
switched on or
defective. Consult the
separate operating
instructions for the
pump unit.
The connected
working equipment
does not move
when actuated
but pressure
indication on
the control table
pressure gauge. Control table
defective Have it repaired
by an authorised
dealer or directly by
LUKAS.
Problem with
the working
equipment. Consult the
separate operating
instructions for the
working equipment.
Connected
working equipment
does not apply the
specifi ed force. Hydraulic fl uid
level in the
supplying pump? Insuffi cient
hydraulic fl uid in
the pump Top up hydraulic
fl uid and bleed the
air
Check the
operating pressure
on the control
table pressure
gauge Pressure supply
has too low
pressure If possible, increase
the max. operating
pressure on the
hydraulic unit to
max. operating
pressure of the
cylinder or use
another hydraulic
unit with a suffi cient
max. operating
pressure.
Check working
equipment Working
equipment
defective Consult the
operating
instructions for the
working equipment.