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Startup, Operation, and Shutdown Of Submersible Sewage Pump

- May 21, 2018 -

Startup, Operation, and Shutdown Of Submersible Sewage Pump

Start the pump 

The most important concern is the prevention of motor overloading. 

  1. Refer to the motor nameplate for full load ampere rating of the motor.

  2. Install an ammeter on the motor leads and check the motor draw immediately after the unit is started.

    NOTICE: A lower than expected current draw with a 3-phase motor may be an indication of incorrect rotation. If the amps are lower than expected, check rotation.

    a) Observe the discharge for flow rate. If it is lower than expected change two of the three motor leads to reverse the direction of rotation. NOTICE: Single-phase motors are internally wired for correct rotation.

    b) Check the motor overload at some other condition from that encountered at start-up The ammeter on the motor leads should be checked for overload at all sump level heights with the liquid that will be normally pumped. The horsepower will tend to increase as the level in the sump rises, due to increased flow.

Maintenance Of Submersible Sewage Pump 

Whenever the pump is removed from the sump using the slide rail system, the pump flange to slide rail base flange O-ring should be inspected for wear. If it does not appear to be in good condition, a replacement O-ring should be installed after the groove has been cleaned and dried so the adhesive will bond to the metal and rubber. 

NOTICE: Cleaning the guide bracket around the hinge pin 9868 will help ensure proper operation when the pump is lowered back into place.

Disassembly Of The Submersible Sewage Pump 

  1. Disconnect all electrical service. Mark leads for reassembly.

  2. Remove fasteners which secure casing to motor adapter and separate the parts.

  3. Remove impeller cap screw and impeller washer. Impeller is keyed to shaft. Carefully slide impeller off shaft.

  4. Remove fasteners attaching motor adapter to motor and separate parts.

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