Trouble Shooting; Repairs - probst JWK Serie Betriebsanleitung

Maintenance and care
8.2

Trouble shooting

ERROR
The clamping-power is not big enough,
the load is slipping out
(optional)
(optional)
(Adjustment of the opening width)
(optional)
(Pneumatics / Hydraulics)
(optional)
(Electrics) (optional)
(Property of material)
The clamping-power is fading
(Pneumatics / Hydraulics)
(optional)
Unbalanced load
(Adjustment of the gripping range)
(optional)
The gripping arms are not working
synchronous
(Rack gear adjustment) (optional)
(Pneumatics / Hydraulics) (optional)
8.3

Repairs

Only persons with the appropriate knowledge and ability are allowed to repair the device.
Before the device is used again, it has to be checked by an expert.
5280.0021
CAUSE
The grippers are worn
The maximum load is exceed
The actual opening width is not correct
The working pressure is not big enough Adjust the working pressure (see
The electric motor is faulty.
The surface of the material is dirty or
the material is not suitable / allowed for
this device.
The system is not tight
The cylinder can not control the
pressure.
The valves are faulty.
The device is not loaded symmetrically
The adjustment of the gripping rangeh
is not symmetrical.
The rack gear adjustment is faulty
The dividing valve is faulty
V3
REPAIR
Replace the grippers
Reduce the weight of. the load
Adjust the opening width according to
the load you want to transport
technical data)
Check the electric motor
Check the surface of the material or ask
the manufacturer, if you the material is
allowed for this device.
Check all Connections , fittings, pipes
and hoses.
Check the seal kits of the cylinders
Check the valves
Adjust the position of the load
Correct the adjustment of the gripping
range
Check the rack gear adjustment and
repair it
Check the dividing valve
26 / 28
GB