Flowserve V901 VariCool Desuperheater - Manual (Page 8)

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Defect No. Possible cause 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 spindles
can still move !
• slightly re-tighten stuffing box packing
Caution: make sure the valve spindles
can still move !
• if the packing does not stop leaking,
contact customer service 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
• seal(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 service department
or
contract partner
No limit switch signal
8.1
8.2
• power supply to limit switch
interrupted
• limit switch misadjusted
• check power supply ( voltage, circuit
breakers, connections )
• readjust limit switch; operating
distance see limit switch data sheet
Vibrating positioner
9.1 • defective positioner • see maintenance and operating in
structions of positioner manufacturer
If the problem is not solved by taking the above measures, contact the customer services
department or contract partner.