A B C D E F G H I
J K L M Possible causes
Remedy
22)
✘
-
-
✘
-
✘ ✘
-
-
-
-
-
- Air intake at the shaft seal
▪
Clean barrier fluid line, supply
external barrier fluid, if
necessary, or increase barrier
fluid pressure.
▪
Check liquid supply system.
▪
Fit new shaft seal.
▪
Replace shaft protecting
sleeve.
✘
-
-
✘ ✘
-
-
✘
-
-
-
✘
- Wrong direction of rotation
▪
Interchange two of the phases
of the power cable.
▪
Check electrical connections.
▪
Check impeller position;
correct if necessary.
✘
-
-
✘
-
-
-
✘
-
-
-
-
- Speed is too low.
▪
Increase speed.
▪
Check switchgear.
▪
Fit larger impeller.
✘
-
-
✘
-
✘ ✘
-
-
-
-
-
- Wear of internal components
▪
Check duty point/pump
selection.
▪
Increase back pressure by
throttling.
▪
Check fluid handled for
contamination by chemicals;
check solids content.
▪
Replace worn components by
new ones.
-
-
-
-
✘
-
-
-
-
-
-
✘
- Pump pressure lower than
specified in the purchase order
▪
Re-adjust to duty point.
▪
Increase back pressure by
throttling.
-
-
-
-
✘
-
-
-
-
-
-
✘
- Density or viscosity of fluid
handled higher than stated in
purchase order
▪
Reduce speed.
▪
In the case of persistent
overloading, turn down
impeller, if possible.
-
✘ ✘
-
✘
-
-
✘
-
-
-
✘
- Speed is too high.
▪
Reduce speed.
▪
In the case of persistent
overloading, turn down
impeller, if possible.
-
-
-
-
-
-
-
-
-
-
-
-
✘
Assembly bolts/sealing elements
▪
Check.
▪
Re-tighten the bolts.
▪
Fit new sealing elements.
▪
Check pipeline connections
and secure fixing of pump;
improve fixing of pipelines, if
necessary.
22)
Pump pressure must be released before attempting to remedy faults on parts which are subjected to pressure.
8 Trouble-shooting
70 of 94
Omega / Omega V
Summary of Contents for Omega
Page 93: ......
