Flowserve WIK Series User Instructions page 72

FAULT SYMPTOM
Pu mp ov e rh eats and se iz es
 Be a rin gs h av e s ho rt l if e

 Pu mp v ib rat e s o r i s n ois y

 M echan ic a l se a l h a s sho rt li f e

 M echan ic a l se a l le a k s e xc e ss iv e l y

 Pu mp r equ i re s e xc e s siv e p ow er

 Pu mp lo se s p ri me aft er sta rt i ng

 Ins uf fi ci en t p r es su r e dev el ope d 
 Ins uf fi ci en t capa cit y del iv e r ed 
  Pu mp doe s not d el iv er l iqu id
 PROBABLE CAUSES 
 
 
   
 
  
Improper installation of bearings
(damage during assembly, incorrect
assembly, wrong type of bearing etc).
Damaged bearings due to
contamination.
C. MOTOR ELECTRICAL PROBLEMS
Wrong direction of rotation.
Motor running on 2 phases only.
Motor running too slow.
Page 72 of 76
WIK USER INSTRUCTIONS ENGLISH BO2662 5/09
POSSIBLE REMEDIES
Check method of assembly, possible
damage or state of cleanliness during
assembly and type of bearing used.
Remedy or CONSULT FLOWSERVE, if
necessary.
Check contamination source and replace
damaged bearings.
Reverse 2 phases at motor terminal box.
Check supply and fuses.
Check motor terminal box connections
and voltage.