Flowserve M-series PolyChem - Manual (Page 54)

USER INSTRUCTIONS PolyChem M-SERIES ENGLISH 71569218 07-11
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Page 54 of 60
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Pump not reaching design flow rate
  Pump not reaching design head (TDH)
  No discharge or flow with pump running
  Pump operates for short period, then loses prime
 
Excessive noise from wet end
 
Excessive noise from power end
 
Pump exhibits increased or higher than anticipated power consumption
 
Pump exhibits decreased or lower than anticipated power consumption
  PROBABLE CAUSES POSSIBLE REMEDIES
 
Bearing damage due to improper
lubrication, identified by one or more
of the following:
1. Abnormal bearing temperature
rise.
2. A stiff cracked grease
appearance.
3. A brown or bluish discoloration of
the bearing races. 1. Be sure the lubricant is clean.
2. Be sure proper amount of lubricant is used. The constant level oiler
supplied with Flowserve pumps will maintain the proper oil level if it is
installed and operating properly. In the case of greased lubricated
bearings, be sure that there is space adjacent to the bearing into which it
can rid itself of excessive lubricant, otherwise the bearing may overheat
and fail prematurely.
3. Be sure the proper grade of lubricant is used.
 
Outer magnet assembly rubbing
bearing housing or containment
shell. 1. Check integrity of ball bearings.
2. Make sure drive shaft is not bent.
3. Make sure outer magnet assembly has not come unscrewed due to
incorrect motor rotation.