To ensure the normal operation of the pump should be the correct use of electric pump

Submersible pump used well mainly two kinds of flooding and oil immersion, both by the pump and motor composed of two parts. In order to ensure the normal operation of the pump, it must be carried out as follows.

1. Pump before use, the application of megger to check the motor insulation resistance, the minimum value of not less than 5MΩ. Check the method is to connect a megohmmeter on the electric pump cable terminal block, the other terminal connected to the motor housing, the megger, shake, observe the insulation resistance.

2. Check the cable for cracking, scratches and other phenomena, if damaged should be promptly replaced to prevent leakage.

3. Water immersion motor should open the irrigation bolts, filled with clean water, tighten the bolts, and then dive into the water. Oil immersed motor, such as the discovery of oil spills, seal components should be replaced before diving into the water.

4. Pump into the water before the submersible pump should be filled with water, idling 1 to 2 minutes, and start 2 times, check idling and start is normal. If you turn the opposite, the two-phase wiring can be exchanged.

5. Check whether the crack Yang pipes, the connection is solid.

6. Do not pull the pump when diving into the water or lifting, in order to avoid damage to the cable or the joint at the disconnect.

7. The supply voltage should be controlled within 5% of the rated voltage. If the voltage is too high or too low, the motor will be damaged.

8. Electric pump into the water should be vertical, not diagonal.

9. Pumps shall not be transported more water or mud sediment. Flooding motor should always clean the motor cavity sand, replace the motor cavity of water.

10. The actual pump lift should be 0.8 to 1.1 times the rated head. This can improve the efficiency of electric pump, saving, to avoid motor overload operation, extend the service life.

11. After the electric pump, it should be cleaned, coated with anti-rust oil on the metal surface and stored in a dry place vertical. Flooding motor should also be placed within the clean water motor.

Vessel Production Cutting Machine

The CNC cutting machine has the characteristics of fast cutting speed and small slit in the cutting process, which may lead to limited actual cutting speed, excessive kerf and uneven cutting surface, and eliminate the mechanical failure of the plasma CNC cutting machine. Failure to properly set the plasma CNC cutter related parameters during operation will also affect the actual cutting effect.