WIK USER INSTRUCTIONS ENGLISH BO2662 5/09
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FAULT SYMPTOM
Pu m p o v e rh e a ts a n d s e i z e s
B e a ri n g s h a v e s h o rt l i f e
Pu m p v i b ra t e s o r i s n o i s y
M e c h a n i c a l s e a l h a s s h o rt l i f e
M e c h a n i c a l s e a l l e a k s e x c e s s i v e l y
Pu m p r e q u i re s e x c e s s i v e p o w e r
Pu m p l o s e s p ri m e a ft e r s ta rt i n g
I n s u f f i c i e n t p r e s s u r e d e v e l o p e d
I n s u f f i c i e n t c a pa c i t y d e l i v e r e d
Pu m p d o e s n o t d e l i v e r l i q u i d
PROBABLE CAUSES
POSSIBLE REMEDIES
Impeller damaged or eroded.
Replace or CONSULT FLOWSERVE for
improved material selection.
Leakage under sleeve due to joint
failure.
Replace joint and check for damage.
Shaft sleeve worn or scored or running
off center.
Check and renew defective parts.
Mechanical seal improperly installed.
Check alignment of faces or damaged
parts and assembly method used.
Incorrect type of mechanical seal for
operating conditions.
CONSULT FLOWSERVE.
Shaft running off center because of worn
bearings or misalignment.
Check misalignment and correct if
necessary. If alignment satisfactory
check bearings for excessive wear.
Impeller out of balance resulting in
vibration.
Check and CONSULT FLOWSERVE.
Abrasive solids in liquid pumped.
Internal misalignment of parts
preventing seal ring and seat from
mating properly.
Mechanical seal was run dry.
Check mechanical seal condition and
source of dry running and repair.
Internal misalignment due to improper
repairs causing impeller to rub.
Check method of assembly, possible
damage or state of cleanliness during
assembly.
Remedy or CONSULT FLOWSERVE, if
necessary.
Excessive thrust caused by a
mechanical failure inside the pump.
Check wear condition of impeller, its
clearances and liquid passages.
Excessive grease in ball bearings.
Check method of regreasing.
Lack of lubrication for bearings.
Check hours run since last change of
lubricant, the schedule and its basis.