Maintenance Instructions
Control Valve Series 35 000
KÄMMER VENTILE GMBH • MANDERSCHEIDTSTRASSE 19 • D - 45141 ESSEN • TEL.: ( 0201) 89 19 – 5 • FAX: ( 0201) 89 19 – 600
Trouble-shooting Chart
Fault
Possible Cause
Remedy
Stem motion
1. Packing excessively tightened
1. Tighten gland nut slightly more than „finger-tight“
impeded
2. Operating temperature too
2. Note operating data and contact dealer
high for selected trim
3. Supply pressure inadiquate
3. Check system for leaks in the supply pressure or signal lines. Re-
tighten the connections, if necessary replace leaky lines
4. Positioner defective
4. See operating instructions for positioner
Excessive
1. Bonnet loose
1. See step 4.2.5 for correct tightening of bonnet.
leakage
2. Worn or damaged
2. Re-machine or replace seat ring/plug.
seat ring/plug
3. Gaskets damaged
3. Replace gaskets
4. Inadiquate actuator thrust
4. Check air feed. If air feed is OK, contact dealer.
5. Plug incorrectly adjusted
5. Correctly adjust plug according to step 3.2.4
6. Incorrect direction of flow
6. Check specification. Contact dealer
7. Handwheel incorrectly
7. Adjust handwheel
adjusted (acts like end stop)
Inadiquate flow
1. Plug incorrectly adjusted
1. Correctly adjust plug according to step 3.2.4
(short stroke)
2. Positioner defective
2. See operating instructions for positioner
3. Operating requirements
3. Check operating data. Contact dealer
too high
Plug slams
1. Plug adjustment incorrect
1. Correctly adjust plug according to step 3.2.4
2. Inadiquate supply pressure
2. Check supply pressure, seal leaks, remove blockage
3. Trim too large for
3. Replace trim
flow rate
