Flow control division, Kammer control valves, 8 troubleshooting chart – Flowserve 3 Series P7 Type User Manual
Page 8
8
Flow Control Division
Kammer Control Valves
8 Troubleshooting chart
Problem
Possible cause
Corrective Action
Stem pulsates
1. Unstable air supply
2. Adjust air supply
2. Vent or passage blocked
3. Clean vent or passage
Actuator slow
1. Air supply too low
1. Adjust air supply
2. Diaphram case leaks air
2. Seal diaphram case
3. Spring case vent blocked
3. Renew vent
Actuator will not
1. Air supply too low
1. Adjust air supply
return to end
2. Broken actuator spring
2. Renew all actuator springs
position
3. Actuator movement blocked
3. Dissassemble actuator and check
Actuator will not
1. Actuator not vented
1. Vent actuator
return to the
2. Broken actuator spring
2. Renew all actuator springs
failsafe position
3. Actuator movement blocked
3. Dissassemble actuator and check
All data subject to change without notice
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