Lukas PC 650 User Manual
Page 36

36
Fault
Check
Cause
Solution
The engine is
running, but
the connected
equipment does
not move upon
activation of the
valve.
Check hose
Hose assembly not
connected properly or
damaged
Check connection of
hose and reconnect if
necessary.
Check the switch
position of the
valve lever on the
pump block of the
hydraulic unit
Valve not switched
to supply line
pressurisation.
Switch valve to
pressure load of the
supply line.
Defective pump unit
Have it repaired by
authorised dealer or
directly by LUKAS
Connect a
different unit and
check whether
it works when
actuated
The previously
connected unit is
defective.
Rectifi cation see
operating instructions
of the connected unit
Plug-in coupling
(female) defective
Replace plug-in
coupling (female)
The connected
rescue equipment
does not move on
activation of the
valve, or moves
only very slowly or
unevenly.
Connect a
different unit and
check whether
it works when
actuated
The previously
connected unit is
defective.
Rectifi cation see
operating instructions
of the connected unit
Check the switch
position of the
valve lever on the
pump block of the
hydraulic unit
Pressure relief on
the unit is still active
(circulation at static
pressure)
Check the switching
positions of the
valve lever(s) and, if
necessary, reset (as
far as the end position)
Defective pump unit
Have it repaired by
authorised dealer or
directly by LUKAS
Air in hydraulic system Vent the hydraulic
system
Female coupling
defective
Replace the coupling
sleeve