How to do routine maintenance of long shaft deep well pump?

long shaft deep well pump electrical routine maintenance, electrical inspection is the focus of the cable insulation and prevent leakage
(1) regular inspection of the long shaft deep well pump insulation resistance, check the cable for damage; if damaged should be replaced in time to prevent leakage;
(2) often check the long shaft pump operating voltage and current, with a voltmeter to measure three-phase voltage should be basically the same;
(3) pump operation, you must observe the instrument readings and pump vibration and sound is normal, such as abnormal circumstances to deal with in a timely manner.
Mechanical maintenance of long shaft deep well pump
(1) often check the long shaft deep well pump mechanical seal, the mechanical aspects of maintenance is focused on sealing and preventing corrosion on a variety of seals.
(2) to prevent the occurrence of long-axis deep well pump corrosion, such as damage to the surface of the pump paint stripping, rust should be promptly removed, painted anti-rust paint to be protected.
(3) regular inspection of the long axis of the deep shaft pump bearings, bearing to see whether the wear and tear, whether the lack of oil, whether to run the inner ring or run the outer ring of the situation, whether to replace.
(4) the long shaft deep well pump every two years to conduct a comprehensive inspection and maintenance, mechanical operation can be issued by the sound of the initial inspection of the long axis of deep well pump components are normal. Check whether the impeller wear or cavitation, the shaft is rusty deformation or wear, whether the loose inside and outside the motor tightening screws, pump mouth and the surrounding sediment deposition or blockage.