Troubleshooting
38
06.00 | GSM-Z | Assembly and Operating Manual | en | 389110
7 Troubleshooting
7.1 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.
Keep compressed air lines between the
product and directional control valve as
short as possible.
Flow rate of valve is sufficiently large
relative to the compressed air consumption.
IMPORTANT! The throttle check valve must
not be removed, even if the product has
not reached the opening and closing times.
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.
Loading too large.
Check permissible weight and length of the
gripper fingers.
7.2 Swivel movement is not executed immediately
Possible cause
Corrective action
Product was at a standstill for a long time.
• Vent the piston chamber.
• Swivel once to end and starting positions.
• Depressurize the product.
• Carry out several depressurized swivel
movements.
•
IMPORTANT! Do not spray Teflon spray
or penetrating oil into the air
connections!
This only leads to a short-
term improvement, but the grease
lubrication will be washed out as a result.
If the product has already been treated
with Teflon spray or penetrating oil, it
should be serviced or completely
relubricated.
