Flowserve TB-MAG INNOMAG - Manual (Page 38)

INNOMAG® TB- MAG™ ASME and ISO SEALLESS ENGLISH 26999988 06-14
Page 38 of 44
FAULT SYMPTOM
P u m p o v e r h e a t s a n d s e i z e s
 P u m p v i b r a t e s o r i s n o i s 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 ft 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

POSSIBLE CAUSES POSSIBLE REMEDIES
   Air or vapor pocket in suction line. Check suction line design for vapor pockets.
  Air leaks into suction line. Check suction pipe is airtight.
    Inlet of suction pipe insufficiently submerged. Check system design.
   Speed too low. CONSULT FLOWSERVE.
 Speed too high. CONSULT FLOWSERVE.
  
Total head of system higher than differential head
of pump. Check system losses. Increase impeller size or motor speed.
Remedy or CONSULT FLOWSERVE.
 Total head of system lower than pump design head.
Check system losses. Decrease impeller size or motor
speed.
Remedy or CONSULT FLOWSERVE.
 Specific gravity of liquid different from design.
Check and CONSULT FLOWSERVE.
  
Viscosity of liquid differs from that for which
designed.
  Operation at very low capacity.
Measure value and check minimum permitted.
Remedy or CONSULT FLOWSERVE.
  Operation at high capacity.
Verify flow with instrumentation or batch cycle time and
adjust as needed. Measure value and check maximum
permitted.
Remedy or CONSULT FLOWSERVE.
B. Mechanical troubles
   Misalignment due to pipe strain.
Check the flange connections and eliminate strains using
elastic couplings or a method permitted.
 Piping or pump not properly anchored.
Tighten mounting bolts on pump feet and baseplate.
Confirm that the suction and discharge pipes are properly
supported per Hydraulic Institute recommendations.
 Improperly designed foundation.
Check setting of baseplate: tighten, adjust, grout base as
required.
   Partially clogged impeller is unbalanced. Open pump and clear blockage from the impeller.
   Rotating part rubbing on stationary part internally.
If burning smell coming from back of pump, the outer
magnet is installed incorrectly. Confirm that the groove on
the outer magnet assembly lines up with the edge of the
adapter. Re-align and replace components as necessary.
Check and CONSULT FLOWSERVE, if necessary.
  Bearings worn Replace bearings.
   Wearing ring surfaces worn. Replace worn wear ring/surfaces.
   Impeller damaged or eroded. Replace or CONSULT FLOWSERVE.
 Abrasive solids in liquid pumped. Check and CONSULT FLOWSERVE.

Excessive thrust caused by a mechanical failure
inside the pump. Check wear condition of impeller, its clearances and liquid
passages.
 Pump maximum temperature exceeded.
Open the pump. Replace parts as needed.
CONSULT FLOWSERVE.