Flowserve 5801 Notice De Montage Et Mode D'emploi page 21

4.1 Trouble shooting
EN
Defect
Spindle does not move
Jolting spindle movement
Spindle travel less than full
stroke
(O to 100% stroke)
Excessive valve seat leakage
Leaking stuffing box system
Leaking top or lid seal
Leaking housing
Leaking membrane actuator
If the problem is not solved by taking the above measures, contact the customer services
department or contract partner.
Service hotline Austria:
+43 (0)664 341 8 616
4
No. Possible cause
1.1
• no aux. energy supply to
membrane actuator
1.2
• valve trim worn, stuck
2.1 • damaged spindle
3.1 • foreign particles in valve seat,
damaged trim
4.1 • damaged sealing edges at valve
seat or plug
4.2 • foreign particles in seat area
5.1 • bellows defective
6.1 • seal defective
7.1
• medium- or flow-related damage
8.1 • actuator membrane defective
Remedy
• check supply line for leaks
check pressure
• contact customer services department or
contract partner
• contact customer services department or
contract partner
• contact customer services department or
contract partner
• contact customer services department or
contract partner
• contact customer services department or
contract partner
• contact customer services department or
contract partner
• contact customer services department or
contract partner
• contact customer services department or
contract partner
• contact customer services department or
contract partner
Service hotline Germany:
+49 (0)2157-8176-29 or +49 (0)163-8176-014