Submersible sewage pump repair and maintenance

Submersible sewage pump has a lot of advantages, so now the demand for submersible pump products also increased year by year, how to carry out the maintenance of submersible sewage pump?
1, the sewage pump should be managed and used by hand, and regularly check the insulation resistance between the electric pump winding and casing is normal.
2, each use, especially for thick sticky medium, the electric pump should be put into the water for a few minutes to prevent the pump from leaving the sediment, to ensure the clean water submersible sewage pump.
3 in the conventional state of sewage pump every 300-500 hours after the filling or replacement of oil room in the oil (10-30 oil), so that the mechanical seal to maintain a good state of lubrication, improve the service life of mechanical seals.
4 non clogging submersible sewage pump such as long time should not be removed from the water pump, not long soak in the water, in order to reduce the moisture of stator winding opportunities, increase the pump life, to paint the paint off place, to avoid corrosion.
5 replace the sealing ring: long-term use in water media, the gap between the impeller and the sealing ring can be increased, resulting in decreased pump flow and efficiency, should turn off the switch, lift the pump, remove the bottom cover, remove the sealing ring, according to the actual size of the impeller mouth ring with sealing ring, the gap in general about 0.5mm.
6 submersible non clogging sewage pump disassembly, maintenance, chassis components must be approved by the 0.2MPa air tightness test inspection, to ensure that the motor reliable seal, pump test should adopt the click way to ensure that products normally and then start the motor.
7, small sewage pump can be used to move the way, the diameter of more than 100mm submersible sewage pump is recommended to use coupling type installation, so that after the maintenance and detection.