Flowserve FRBH - Manual (Page 44)

FRBH, FRBHX AND FRBHS USER INSTRUCTIONS ENGLISH 71569178 10-04
Page 44 of 54
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FAULT SYMPTOM
P u m p o v e r h e a t s 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
⇓ ⇓ P u m p v i 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 v e l y
⇓ ⇓ P u m p r e q u i r e s e x c e s s i v e p o w e r
⇓ ⇓ P u m p l o s e s p r i m e a f t e r s t a 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 p a 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 v e r l i q u i d
⇓ ⇓
PROBABLE CAUSES POSSIBLE REMEDIES
l l
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.
l l
Damaged bearings due to contamination. Check contamination source and replace damaged
bearings.
C. MOTOR ELECTRICAL PROBLEMS
l l l l Wrong direction of rotation. Reverse 2 phases at motor terminal box.
l l Motor running on 2 phases only. Check supply and fuses.
l l l Motor running too slow. Check motor terminal box connections and voltage.