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Dixon Sanitary 2014
800.789.1718
Pump
Troubleshooting
Dixon Sanitary BC-Series pumps are manufactured and inspected to meet sanitary standards. Occasional problems may arise.
The following guide will help determine the possible cause and offer suggestions on corrections to maximize the performance of
your pump. In case of any electric motors issues, contact the motor manufacturer directly. If you have any questions or concerns
in regards to your BC-Series pump, we encourage you to contact Dixon Sanitary.
Problem
Possible Cause
Suggested Action
Not enough or no discharge
No fluid reaching pump.
Need to prime pump. Installation of a
priming system is recommended.
Suction or discharge closed or blocked.
Open suction. If plugged, shutdown
pump and remove blockage. If closed,
check all valves for proper positions.
Motor rotation incorrect.
Adjust motor electrical wiring to correct
rotation.
Speed too slow (low voltage, wrong
frequency, wrong motor).
Adjust voltage and frequency. Change
motor if necessary.
Impeller damaged.
Replace impeller.
Seal area or supply area has an air leak. Replace seal if needed. Check all other
areas for air leaks and repair.
Excessive air in material.
Make any adjustments in system to
insure excess air is removed before
material reaches the pump.
Discharge head too high.
Adjust system to lower discharge head.
Suction lift too high.
Adjust system to lower suction lift.
Insufficient NPSH (Net Positive Suction
Head) available.
Adjust system to provide correct NPSHa.
Impeller diameter not correct for
application.
Contact: Dixon Sanitary 800-789-1718
Not Enough Pressure
Seal area or supply area has an air leak. Replace seal if needed. Check all other
areas for air leaks and repair.
Motor rotation incorrect.
Adjust motor electrical wiring to correct
rotation.
Speed too slow (low voltage, wrong
frequency, wrong motor).
Adjust voltage and frequency. Change
motor if necessary.
Excessive air in material.
Make any adjustments in system to
insure excess air is removed before
material reaches the pump.
Impeller diameter not correct for
application.
Contact: Dixon Sanitary 800-789-1718
Motor Overload/Excessive Power
Consumption
Discharge is too high.
Restrict discharge to lower flow rate.
Impeller is binding.
Inspect pump and check for any damage,
misalignment or interference. Replace
any damaged or worn parts.
Seal binding.
Inspect pump and replace any damaged
or worn parts.
Discharge is too low.
Increase discharge head.
Liquid is heavier or more viscous than
rating.
Contact: Dixon Sanitary 800-789-1718
Electrical supply, voltage or frequency
incorrect.
Make any adjustments needed up to
replacing the motor.
Faulty electrical connections.
Check wiring and repair/replace as
necessary.
Overload heaters too small.
Inspect and replace as necessary.
Defective motor.
Contact motor manufacturer for possible
warranty or repair. Replace if needed.
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