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Trouble Shooting Of Drainage Pump
Aug 27, 2018

1, after the start of the water: the pump has air or intake pipe gas, or the bottom valve closed not strict irrigation diversion dissatisfaction, vacuum pump filler serious air leakage, gate valve or clap door closed lax.

Exclusion: Remove sundries, replace damaged rubber pads, changing the direction of the valve, pressing or replacing the new filler, closing the gate valve or patting the door, increasing the injection volume until the discharge screw is not bubbling, replacing the cracked pipe, reducing the head, and pressing the nozzle of the pump into the water for 0.5 meters.

2, start the pump does not turn: The filler is too tight or between the impeller and the pump body is jammed with debris, or pump shaft, bearings, leakage ring rust, or the pump shaft severely curved.

Remove: Loosen the filler, dredge the water diversion trough, disassemble the pump body to remove the sundries and rust, and remove the pump shaft to correct or replace the new pump shaft.

3, water pump heating bearing damage: rolling bearing or bracket cover clearance is too small, pump shaft bending or two axes different heart, tape is too tight, oil or oily not good, impeller on the balance hole plug, impeller out of balance, increased to the side of the thrust.

To remove: Replace the bearing, remove the rear cover, install the gasket between the bracket and the housing, adjust the pump shaft or adjust the concentricity of the two axes, properly adjust the tightness of the tape, add the clean butter, the butter takes up 60% of the void in the bearing, and remove the blockage in the balance hole.

4, after the start of the flow is insufficient: speed does not match or belt skid, the speed is low, axial flow pump blade installation angle is too small, head is insufficient, suction process is high, bottom valve, pipe and impeller local blockage or impeller defect;

Elimination: Restore the rated speed, remove the belt grease, adjust the belt tightness, adjust the blade angle, reduce the pump installation position, seal the pump leakage, squeeze the filler, remove the blockage, replace the impeller, replace the leakage ring, plug the leaking place.


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