VAT 48 Series, Инструкции по установке, эксплуатации и обслуживанию

Страница: 19 / 27

Series 48 OPERATION
288914ED Edition 2013-05-24 19/27
5.6 Trouble shooting
Failure Check Action See
Valve
mechanism does
not move
Air pressure
Connect
compressed air «4.3 Compressed air
connection»
Electrical power
Connect electrical
power «4.4 Electrical
connection»
Operating
pressure Adjust operating
pressure «4.3 Compressed air
connection»
Position of
slotted screw Turn slotted screw to
the correct position «5.5.1 Manual emergency
operation»
Leak at gate Condition of gate
seal
Please contact VAT www.vatvalve.com
Condition of
valve gate
Please contact VAT www.vatvalve.com
Operating
pressure Adjust operating
pressure «4.3 Compressed air
connection»
Leak at body Condition of
bonnet seal and
sealing surface
Please contact VAT www.vatvalve.com
Condition of
bellows
Please contact VAT www.vatvalve.com
Whistling sound
during opening
or closing
–
No action required
when valve is actu-
ated at atmosphere
–
–
No action required
when valve is actu-
ated in vacuum as
long as the sound is
not excessive
–
Table 5-4
If you need any further information, please contact one of our service centers. You will find
the addresses on our website www.vatvalve.com.