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11
10.
TROUBLESHOOTING
T 9.1
FAULT
POSSIBLE CAUSE
FAULT CLEARANCE
Leak in the valve body.
Wear of the body o’ring.
Change the o’ring.
Loosening of the seal carrier.
Adjust the seal carrier.
Presence of solids or strange elements.
Remove the valve and replace damaged parts.
Leak in the valve shaft
Wear of the shaft o’rings.
Change the o’rings.
The torque is too strong or the
valve is blocked.
The seal carrier is over-tight
Adjust the seal carrier.
The valve does not open or
close.
Lack of pressured air.
Check air supply to actuator
The valve does not close
completely.
The actuator stroke is not properly adjusted to the
valve.
Check adjustment limits according to the actuator manual.
The torque of the valve has increased above the
calculated value.
Check the valve: obstructions in the disc or malfunction
of the valve.
The valve does not change the
position.
The solenoid valve does not operate properly due to
the use of unfiltered air.
Add filtration equipment to the air supply input.
The solenoid does not work properly due to impurities
or oxidation by a corrosive environment.
Change the solenoid valve and ask the technical
department about the most appropriate solenoid valve.
ENGLISH
EXTREME PNEUMATIC BALL VALVE