
Series 140
OPERATION
875067EA
Edition 14.07.2020
21/43
6
Trouble shooting
Failure
Check
Action
See
Valve does not
close / open
Compressed air
supply
Connect
compressed air
supply
«4.3 Compressed air
connection»
Operating
pressure
Adjust operating
pressure
Product data sheet
Power supply at
solenoid valve
Connect power
supply
«4.4 Electrical connection»
Leak at gate
Gate seal
Clean or replace
gate seal
«7.3 Removing valve gate»
Operating
pressure
Adjust operating
pressure
Product data sheet
Leak at body
Bonnet seal and
sealing surface
•
Clean sealing
surface
•
Clean or
replace bonnet
seal
«7.3 Removing valve gate»,
steps 1 to 7
Rotary feed
through
Check leak
tightness via
integrated leak
port
Position referenced on
dimensional drawing.
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.