Use and maintenance of deep well submersible pump

Use and maintenance of deep well submersible pump

1. Start:

(1) the following 11 kw pumps allow direct start, 13 kw or more pumps should be equipped with step-down starting cabinet, to protect the safe operation of electric pump.

(2) in order to avoid the electric pump rotor moment and reduce the starting load, electric pump should be locked outlet valve stroke when starting to 3/4 (leave a quarter of the air gap. In order to put gas) to start after the water slowly open, to pump under control in the appropriate position.

(3) started running after the start, should strengthen the supervision and the observed water level change, ensure pumps within the scope of the condition of operation, can be put into operation after pumps running smoothly.

(4) deep well submersible pump put into operation for the first time after five hours, stop quickly measuring thermal insulation resistance, its value is not less than 0.5 M Ω, can continue to use.

2. Stop the pump: Stop before the deep well submersible pump, to prevent the backflow of water, at the same time of cut off the power to close the valve, restart time every 20 minutes.3. The deep well submersible pump operation and maintenance:

(1) deep well submersible pump should be to work in the design point, the axial force is moderate, pump efficiency is highest, the most economical and reliable.

(2) submersible deep-well every work 8 hours to full check, each instrument for change, whether the circuit nodes fever, voice is normal. Deep well submersible pump normal working current is greater than the motor rated capacity of the famous brand.

3. One of the following circumstances, should immediately stop the pump:

(1) of the deep well submersible pump working current suddenly above the motor rated current

(2) the water yield is not normal, gap water, sediment concentration increased

(3) the motor insulation resistance is lower than 0.5 ohms

(4) has obvious noise vibration of unit

(5) power grid voltage is not enough, less than 5% of the rated voltage

(6) the fuse burned a phase

(7) delivery road damage

4. Matters needing attention in operation and maintenance:

(1) check that the current voltage and discharge pressure every day, every 2 weeks testing dynamic water level, and make records.

(2) every four weeks to check the insulation resistance of motor and make records.

(3) use of start times to reduce as far as possible.

(4) under the deep well submersible pump if well discontinuous after use, should boot up once a week, and run the 5-10 minutes, to prevent pumps for corrosion can't start.

5. Deep well submersible pump storage and handling: Storage of deep well water to put a net electric submersible pump cavity, the surface dry, shaft head shafts to besmear antirust oil, should be erected.(in case of rotor deformation) in a dry, no chemical corrosive articles, normal temperature, winter storage of not less than 3 ℃ temperature.