17
Kämmer Series 341000 FCD KMENIM4104-01 03/18
8
TROUBLE SHOOTING
Problem
Possible cause
Remedy
Actuator or
stem moves
stiffly
1 Operating temperature too high for selected
fittings
1 Note the operating data and contact Flowserve
2 Inadequate air supply
2 Check system for leaks in air supply or signal lines, re
tighten connections or replace lines if necessary
3 Positioner defect
3 See operating instructions for positioner
Excessive
leakage
1 Bonnet is loose
1 See step 3.2.3 for re-tightening the bonnet correctly
2 Worn or damaged plug
2 Rework or replace plug
3 Gaskets damaged
3 Renew gaskets
4 Inadequate actuator thrust
4 Check air feed. If air feed is OK, contact Flowserve
5 Plug incorrectly adjusted
5 Correctly adjust plug according to step 3.3.1
6 Incorrect direction of flow
6 Check specification. Contact Flowserve
7 Handwheel incorrectly adjusted (acts as an
end-stop)
7 Adjust handwheel
Inadequate flow
1 Plug incorrectly adjusted (short stroke
1 Correctly adjust plug according to step 3.3.1
2 Positioner defect
2 See operating instructions for positioner
3 Operating requirements too high
3 Check operating data. Contact Flowserve
Plug slams
1 Plug adjustment incorrect
1 Correctly adjust plug according to step 3.3.1
2 Inadequate supply pressure
2 Check air supply, seal leaks, remove blockages
3 Trim too large for flow rate
3 Replace trim
