Flowserve MP1 Sier-Bath - Manual (Page 37)

MP1 USER INSTRUCTIONS ENGLISH 26999958 – 10-12
Page 37 of 48 flowserve.com
FAULT SYMPTOM
P u mp o v er h e at s an d s ei z es
 B e ar i n g s h av e s h o r t l i f e
 P u mp v i b r at e s o r i s n o i sy
 M ech an i c al s e al h a s sh o r t l i f e
 M ech an i c al s e al l e ak s e xc e s si v e l y
 P u mp r eq u i r e s ex c es s i v e p o w er
 P u mp l o s e s p r i m e af t er s t ar t i n g
 I n su f f i ci en t p r es su r e d ev e l o p ed
 I n su f f i ci en t c ap a ci t y d el i v er ed
 P u mp d o e s n o t d el i v er l i q u i d

PROBABLE CAUSES POSSIBLE REMEDIES
     Bearings worn Replace bearings.
   Wearing surfaces worn. Replace screw tip and body bore coatings
   Screws 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 centre. 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(s] running off centre because of worn
bearings or misalignment.
Check misalignment and correct if necessary. If
alignment satisfactory check bearings for excessive
wear.
     Shafts 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
Check method of assembly, possible damage or
state
of cleanliness during assembly.
Remedy or CONSULT FLOWSERVE, if necessary.
   Worn bearings or timing gears
Check condition of bearings and gears. Check oil
levels and condition of lubricant
   Excessive lubricant in housings (external pump] Check oil levels.
   Lack of lubrication for bearings.
Check hours run since last change of lubricant, the
schedule and its basis.
   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.