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Troubleshooting
General Notes
•
Liquids containing ferrous metal fines should not be pumped.
•
If magnets decouple, stop the pump. Running the pump with the magnets decoupled will weaken
the magnets.
Lack of Flow/Head
•
Check for air leaks in suction piping.
•
Make sure that the pump is primed and not running dry.
•
System head higher than anticipated.
•
Make sure all valves are open.
•
Viscosity or specific gravity is too high.
•
Suction lift too high or insufficient NPSH
•
System may be clogged.
•
Motor rotation incorrect.
•
Air in liquid.
Loss of Prime
•
Leaks in piping or air in liquid.
•
Foot valve problems.
•
Foreign objects in liquid.
•
Suction lift too high or insufficient NPSHa.
Excessive Power Consumption
•
Head lower than rating.
•
Too much flow.
•
Specific gravity too high.
•
Viscosity too high.
Vibration/Noise
•
Motor not properly secured.
•
Piping not properly secured.
•
Pump cavitation from improper suction.
•
Drive magnet rubbing against rear housing.
Please see Warranty Page on March Website.
www.marchpump.com/warranty-registration
0750-0984-1000 R2 (Revised 05/11/2017)
