A B C D E F G H I J K L M Possible causes
Remedy
22)
- - - - - - - - - - ✘ - - Worn shaft seal ▪ Check flushing liquid/barrier
fluid pressure.
▪ Clean barrier fluid line, supply
external barrier fluid, if
necessary, or increase barrier
fluid pressure.
▪ Fit new shaft seal.
▪ Replace worn components by
new ones.
▪ Replace shaft protecting
sleeve.
✘ - - ✘ - - - ✘ - ✘ - - - Unfavourable flow to pump
suction nozzle
▪ Alter piping layout.
▪ Alter suction/inlet line, if
piping losses are too high.
▪ Check whether pipe routing
results in swirling or irregular
flow (e.g. downstream of
elbow) and correct, if
necessary.
- - - - - - - - ✘ - ✘ - - Gland follower or seal cover
tightened incorrectly; wrong
packing material.
▪ Adjust.
▪ Replace.
▪ Correct.
▪ Replace gland packing.
▪ Replace worn components by
new ones.
- - - - - - - - ✘ - ✘ - - Lack of cooling liquid or dirty
cooling chamber
▪ Check flushing liquid/barrier
fluid pressure.
▪ Clean barrier fluid line, supply
external barrier fluid, if
necessary, or increase barrier
fluid pressure.
▪ Increase cooling liquid
quantity.
▪ Purify/clean cooling liquid.
- - - - - - - ✘ - ✘ - - - Pump is warped or sympathetic
vibrations in the piping.
▪ Re-align pump/drive.
▪ Check pipeline connections
and secure fixing of pump;
improve fixing of pipelines, if
necessary.
▪ Fix pipelines using anti-
vibration material.
- - - - - - - - - ✘ - - - Increased axial thrust ▪ Check duty point/pump
selection.
▪ Check operating mode.
▪ Check suction-side flow
conditions.
- - - - - - - - - ✘ - - - Insufficient or excessive quantity of
lubricant or unsuitable lubricant
▪ Clean the bearings.
▪ Top up, reduce or change
lubricant.
▪ Check oil lubrication system
23)
.
▪ Check oil supply
23)
.
22)
Pump pressure must be released before attempting to remedy faults on parts which are subjected to pressure.
23)
If any
8 Trouble-shooting
Omega / Omega V
71 of 94
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