1. Check the cable is broken, broken phenomenon. It is necessary to observe the appearance of the cable before use, but also with a multimeter or megohmmeter check whether cable channel. There shall be no oil leakage at the outlet of the cable.
2. Before the new pump is started, the stator is used to measure the insulation of the stator to the outer shell of the 1MQ, otherwise the motor winding should do to improve the insulation level. The insulation resistance value of submersible electric pump in cold state measurement is more than 50Mr2.
3. To check whether the oil leakage of submersible electric pump. Submersible electric pump may leak the way there are cable junction, sealing chamber gas screw at the sealing and sealing of the 0 seal ring. Check to determine whether the oil spills. The cause of oil leakage of gas screw is screwed or no screws, screw the oil resistant rubber liner damage. If the O shaped sealing ring is determined to leak oil, then it is because of the failure of O seal ring seal, this time need to open the electric pump to replace the seal ring.
4.Submersible electric pump long-term disabled again before use, should open the on a stage pump shell, disc impeller after the start to prevent parts rust start no water and burnt motor windings. This is more important for the water filled submersible electric pump.
