Causes of Common Problems in Deep Well Submersible Pumps

When we use the submersible pump, it may encounter some problems, so how should we operate? What are the causes of the problem? The following by our Shanghai Submersible Pump factory and we say, to give you a reference.

The first may encounter problems with nerve submersible pumps starting or running with large currents and sometimes even tripping

The reasons for this are:
1, power failure, power shortage.
2, the power cord is too long too small, the pressure drop is too large or the supply voltage is too low.
3, contactor damage or thermal relay trip. (Fault red light)
4, the power cord into the motor line, automatic box within a break or loose into the line phase.
5, the motor has been damaged.
6, the pump has a foreign body card machine.

Let me talk about the exclusion method:
1, check the power supply, excluding phase.
2, increase the cable, improve the supply voltage.
3, check or replace the contactor, thermal relay to be manually reset after cooling.
4, check the line is good.
5, check the motor or replacement.
6, clean up foreign body.

The second problem is the deep well submersible pump pumping is not the water or the water current is too large or too small

cause:
1, pump reversal.
2, the pump head is too high, the actual head low.
3, pumped into the water is blocked.
4, the motor windings on the thermal insulation resistance of less than 0.5 megohm.
5, the aging of electromagnetic wire insulation or damage.
6, rubber cable damage.
7, sealing joint failure.

Solution:
1, open the winding, with self-adhesive tape bandage or re-wound around the new coil.
2, to find the damaged place, with self-adhesive tape re-bandaged.
3, split, good, re-bandaged.

The third problem is the deep well submersible pump no water or intermittent effluent or water less failure

cause:
1, the motor does not start (such as voltage, wire too small too long, the cable pressure drop too large or stuck pump start is not up)
2, pipe plugging or drainage network blocked.
3, pipe rupture or gasket damage.
4, suction surface exposed.
5, submersible pump steering the opposite.
6, Impeller ring and seal ring wear.

Let me talk about the exclusion method:
1, remove the circuit fault, find out the cause of stuck and ruled out.
2, clear the blockage.
3, repair rupture Department.
4, decentralization submersible pump, if still no water, may be more than submersible pump lift range, the proposed change pump.
5, the exchange of any two cable connector.
6, replace the new impeller, seal ring.