Deep well pump use and maintenance

Use and maintenance of deep well pump
1. Start:
(1) 11 kilowatts of electric pump to allow direct start, more than 13 kilowatts of electric pumps should be equipped with step-down starter cabinet to protect the safe operation of the pump.
(2) In order to avoid the electric pump rotor instantaneous upwelling and reduce the starting load, the pump start should be off the valve stroke to 3/4 (leaving 1/4 air gap to deflate) to start the water slowly Open, to control the pump operating point in the appropriate location.
(3) after the start of the start operation, should strengthen the monitoring and observation of water level changes to ensure that the pump operating within the operating range, to be smooth running after the pump can be put into operation.
(4) deep well submersible pump for the first time put into operation 5 hours later, stop the rapid measurement of thermal insulation resistance, the value of not less than 0.5MΩ, to continue to use.
2. Stop the pump:
Deep well submersible pump stop before, in order to prevent water backflow, turn off the power at the same time to close the valve, restart time interval of more than 20 minutes.
3. Deep well submersible pump operation and maintenance:
(1) deep well submersible pump should work in the design work point, this time the axial force is moderate, pump efficiency is highest, the most economical and reliable.
(2) deep well submersible pump every 8 hours to fully check once, each instrument with or without changes, whether the circuit node fever, the sound is normal.