Flowserve IOM Control Valves - Manual (Page 24)

4
EN
Trouble shooting - continued
Defect No. Possible causes Remedy
Excessive valve-seat leakage 4.1
4.2
4.3
• damaged sealing edges at valve
seat or plug
• foreign particles in seat area
• plug does not close fully
• contact customer services department or
contract partner
• contact customer services department or
contract partner
• refer to 3.1 to 3.5
Leaking stuffing box system 5.1
5.2
5.3
5.4
• compression force on packing too
low
• worn packing
• dirty spindle
• damaged spindle
• slightly re-tighten stuffing box packing
Caution: make sure the valve spindle
can still move!
• slightly re-tighten stuffing box packing
Caution: make sure the valve spindle
can still move!
if the packing does not stop leaking, contact
customer services department or contract
partner
• clean spindle with suitable cleaning agent
• contact customer services department or
contract partner
Leaking top or lid seal 6.1
6.2
• pressing force on seal(s) too low
• seals(s) defective
• properly re-tighten top or lid nuts crosswise
• contact customer services department or
contract partner
Leaking housing 7.1 • medium- or flow-related damage • contact customer services department or
contract partner
No limit switch signal 8.1
8.2
• power supply to limit switch
interrupted
• limit switch misadjusted
• check power supply (connections, circuit
breakers, voltage)
• readjust limit switch; operating distance see
limit switch data sheet
Vibrating positioner 9.1 • defective positioner • see maintenance and operating instructions of
positioner manufacturer
If the problem is not solved by taking the above measures, contact the customer services
department or contract partner.
Service hotline Austria: Service hotline Germany:
+43 (0)664 341 8 616 +49 (0)2157-8176-29 or +49 (0)163-8176-014