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How to maintain the sewage pump

In the process of using the sewage pump at ordinary times, the service life of the sewage pump is often reduced due to improper use and lack of maintenance. How should we repair and maintain the sewage pump?
(1) Check whether the sewage pump pipeline and joint are loose. Turn the sewage pump by hand to see if it is flexible.
(2) Add bearing lubricating oil into the bearing body, observe that the oil level should be at the center line of the oil pointer, and the lubricating oil should be replaced or replenished in time.
(3) Pour water (or slurry) into the water diversion plug of the sewage pump body in the lower part of the tank. Self priming sewage pump.
(4) Close the gate valve, outlet pressure gauge and inlet vacuum gauge of the water outlet pipeline.
(5) Inch the motor to see if the motor rotates correctly.
(6) Start the motor. When the sewage pump operates normally, open the outlet pressure gauge and the inlet vacuum pump. Open the gate valve gradually and check the motor load.
(7) The flow and lift of the sewage pump shall be controlled within the range indicated on the label as far as possible to ensure that the sewage pump operates at the high efficiency point, so as to obtain large energy saving effect.
(8) During the operation of sewage pump, the bearing temperature shall not exceed the ambient temperature by 35 ℃, and the high temperature shall not exceed 80 ℃.
(9) If any abnormal noise is found in the sewage pump, stop the pump immediately to check the cause.
(10) When the sewage pump is to be stopped, first close the gate valve and pressure gauge, and then stop the motor.
(11) The lubricating oil of the sewage pump of the intermediate pump shall be changed after 100 hours of operation within one month, and then every 500 hours.
(12) Regularly adjust the packing gland to ensure that the leakage in the packing chamber is normal (it is better to leak out in drops).
(13) Regularly check the wear of the shaft sleeve, and replace it in time if it is worn seriously.
(14) When the sewage pump is used in cold winter, the drain plug at the lower part of the pump body shall be opened after shutdown to drain the medium completely to prevent frost cracking.
(15) If the sewage pump is out of service for a long time, it is necessary to disassemble all the pumps, wipe off the water, and coat the rotating parts and joints with grease.

The pump should be divided into two aspects: electrical and mechanical. For the mechanical aspect, the main thing is to call out the previous maintenance records and compare them. The second is about electricity. We should know the power of each pump motor and have a certain understanding of its control system.
It is suitable for pumping liquid containing fiber or other suspended solids below 80 ℃ for cities, industrial mines, enterprises, sewage and feces discharge, as well as some aquatic products. If the delivery of acidic and alkaline liquids and liquids containing other chemical mixtures that can cause corrosion, the manufacturer can supply pumps assembled with anti-corrosion materials. PW type is horizontal pump and PWL type is vertical pump.