Flowserve Guardian Sealless Metallic - Manual (Page 58)

GUARDIAN USER INSTRUCTIONS ENGLISH 71569212 08-11
Page 58 of 68 flowserve.com
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
⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓
⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓
⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ ⇓ POSSIBLE CAUSES POSSIBLE REMEDIES
rise.
2. A stiff cracked grease appearance.
3. A brown or bluish discoloration of
the bearing races. 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.
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.