Flowserve LNGT - Manual (Page 39)

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08
Page 39 of 48
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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
⇓ ⇓ 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 POSSIBLE REMEDIES
z z Motor running on 2 phases only. Check supply and fuses.
z z z Motor running too slow. Check motor terminal box connections and voltage.