SCHUNK PWG-plus 100, Assembly And Operating Manual

Page: 34 / 52

Troubleshooting
34
09.00 | PWG-plus | Assembly and operating manual | en | 389495
6.4 Gripping force is dropping
Possible cause Corrective action
Compressed air can escape. Check seals, if necessary, disassemble the
product and replace seals.
Too much grease in the mechanical
movement space. Clean and lubricate product.
Pressure drops below minimum. Check air supply.
Pneumatic connection [
}
19]
Component part defective. Replace component or send it to SCHUNK
for repair.
6.5 Gripper 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 fingers.
Reduce gripper to opening and closing times
Air connection according to the catalog.,
Pneumatic connection [
}
19]
Flow control couplings not attached. Attach flow control couplings.
6.6 Product does not achieve the opening and closing times
Possible cause Corrective action
Compressed air lines are not installed
optimally. If present: Open the flow control couplings
on the product to the maximum that the
movement of the jaws occurs without
bouncing and hitting.
Check compressed air lines.
Inner diameters of compressed air lines are
of sufficient size in relation to compressed
air consumption.
Flow rate of valve is sufficiently large
relative to the compressed air consumption.
If, despite optimum air connections, the
opening and closing times specified in the
catalogue are not achieved, SCHUNK
recommends the use of quick-air-vent-
valves directly at the product.
Compressed air can escape. Check seals, if necessary, disassemble the
product and replace seals.
Component part defective. Replace component or send it to SCHUNK
for repair.
Too much grease in the mechanical
movement space. Clean and lubricate product.
Maintenance [
}
35]
Loading too large. Check permissible weight and length of the
gripper fingers.