Troubleshooting
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08.00 | PRG | Assembly and Operating Manual | en | 389325
5 Troubleshooting
5.1 Product is not moving
Possible cause
Corrective action
Base jaws jam in housing, e.g. mounting
surface is not sufficiently even.
Check the evenness of the mounting surface.
Loosen the mounting screws of the product
and actuate the product again.
Pressure drops below minimum.
Check air supply.
Compressed air lines switched.
Check compressed air lines.
Proximity switch defective or set incorrect.
Readjust or change sensor.
Unused air connections open.
Close unused air connections.
Flow control valve closed.
Open the flow control valve.
Component part defective.
Replace component or send it to SCHUNK
for repair.
5.2 Product does not travel the entire stroke
Possible cause
Corrective action
Dirt deposits between cover and piston.
Clean and if necessary re-lubricate.
Pressure drops below minimum.
Check air supply.,
Mounting surface is not sufficiently flat.
Check the evenness of the mounting surface.
Component part defective.
Send product with a SCHUNK repair order or
dismantle product.
5.3 Product opens or closes abruptly
Possible cause
Corrective action
Too little grease in the mechanical guiding
areas.
Clean and lubricate product.
Compressed air lines blocked.
Check compressed air lines of damage.
Mounting surface is not sufficiently flat.
Check the evenness of the mounting surface.
Loading too large.
Check permissible weight and length of the
gripper fingers.
5.4 Product opens with heavy impacts in the end position
Possible cause
Corrective action
Mass moment of inertia of the top jaw too
great.
Use lighter gripper finger and attach the
flow control couplings.
