F
AULTS
,
CAUSES AND REMEDIES
9. Faults, causes and remedies
LIFTING NOT POSSIBLE OR ONLY POSSIBLE VERY SLOWLY
Possible cause
Remedy
Insufficient inlet pressure
Increase inlet pressure to the required value.
Input volume too low
Increase input volume to the required value.
Overload protection has caused
Lower hook briefly, limit load to permissible load capacity,
deactivation
then lift again. If loads within the load capacity range are not lifted, the
overload protection must be adjusted.
Set the pressure correctly. Pressures that are too high can cause
deactivations within the load capacity range.
Hand control is faulty
Have hand control repaired.
Supply hoses leaking or loose
Check connections
Cross section of the line too small
Use line with sufficient cross-section.
Brake does not release fully
Bring the inlet pressure to the required value, check the brake piston seal
and replace the seal if necessary.
Check the setting of the brake piston (see spare parts list).
Brake lining worn
Replace brake lining.
Motor cover bolts loose
Tighten the bolts.
Motor vanes worn
Replace motor vanes.
Motor has run dry.
Lubricate motor, check oiler.
Silencer is clogged
Replace or clean silencer elements, improve air quality if necessary.
Doc.-No.: VA049318-10-OM-EN-0319-64-2
Page
61
of 64
