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
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