Flowserve BP - Manual (Page 39)

BP USER INSTRUCTIONS ENGLISH 85392725 10-09 (E)
Page 39 of 44 flowserve.com
FAULT SYMPTOM
P u m p o ve r h e a ts a n d s e i z e s
B e a r i n g s h a v e s h o r t l i f e o r a r e d a m a g e d
P u m p vi b r a 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 r t 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 ve l y
P u m p r e q u i r e s e x c e s s i ve p ow e r
P u m p l o s e s p r i m e a ft e r s ta r t 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
P u m p d o e s n o t d e l i ve r l i q u i d
PROBABLE CAUSES PROBABLE REMEDIES
● ●
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.
●
Oil has deteriorated. Change to new oil.
●
Kind of oil is not suitable. Change to suitable oil.
● ●
Lack of lubrication for bearings.
Check hours run since last charge of lubricant,
the schedule and its basis.
● ●
Lubricating oil supply pressure is too low.
Check oil unit and lubricating orifice.
CONSULT FLOWSERVE.
● ●
Improper installation of bearings (damage
during assembly, incorrect assembly, wrong
type of bearing etc).
Check method of assembly, possible damage or
state of cleanliness during assembly and type of
bearing used. Remedy or CONSULT
FLOWSERVE, if necessary.
● ●
Damaged bearings due to contamination.
Check contamination source and replace
damaged bearings.
C. MOTOR ELECTRICAL PROBLEMS
● ● ● ●
Wrong direction of rotation. Reverse 2 phases at motor terminal box.
● ●
Motor running on 2 phases only. Check supply and fuses.
● ● ●
Motor running too slow.
Check motor terminal box connections and
voltage.