Lukas SHR 20 - Manual (Page 25)

25
10. Troubleshooting
Trouble Control Cause Solution
Equipment doesn’t
move when activated
Hose assemblies
connected
properly?
Hose assemblies
not connected
Reaffi x hose
assemblies or re-
couple them
Does the pump
unit work?
Equipment or
hydraulic unit
defective
See separate
operating instructions
for hydraulic unit or
equipment.
Equipment
moves slowly or
jerkily when activated
Are the hoses
connected
correctly?
Air in the hydraulic
system
Deaerete hydraulic
system
Does the pump
unit work?
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
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
Damages of the
surface of the
hydraulic hoses
Mechanical
damages or
contact with
aggressive agents
Replace hoses
Leak in the couplings Is the coupling
damaged?
coupling damaged Coupling must be
replaced immediately
Hydraulic fl uid leaking
from the hoses or
connections
Hoses defective? Leak, possible
damage
Replace hoses