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Series 111
14/27
Edition 09.07.2019
984132EA
6
Trouble shooting
Failure
Check
Action
See
Valve does not
close / open
Air pressure
Connect
compressed air
«4.3 Compressed air
connection»
Operating pressure
Adjust operating
pressure
Product data sheet
Voltage at solenoid
valve
Connect voltage
Leak at gate
Gate seal all right?
Replace Gate seal
«7.3 Replacement of valve
gate / mechanism unit»
Gate damaged or
contaminated?
Replace valve gate
«7.3 Replacement of valve
gate / mechanism unit»
Operating pressure
Adjust operating
pressure
Product data sheet
Leak at body
Bonnet seal and
sealing surface all
right?
Clean sealing
surface
– if necessary,
replace bonnet seal
«7.3 Replacement of valve
gate / mechanism unit»,
steps 1 to 6
Bellows all right?
Contact VAT
Table 6-1
If you need any further information, please contact one of our service centers. You will find the
addresses on our website www.vatvalve.com.