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.

The difference between ASME/ANSI and API is the fabrication material and a higher rated API operating pressure.

ASME/ANSI flanges are commonly used in industrial process systems handling water, steam, air and gas. API flanges are manufactured for high strength operating refinery systems with products such as oil and explosive gases.

The flange standards API 6A and ASME/ANSI B16.5 have the same dimensions – but the API 6A flanges are rated for higher pressures as indicated below:

API vs. ASME/ANSI Flanges with ratings

         Pressure Class Rating 


600 2000



900 3000
1500 5000

600 2000
900 3000
1500 5000

API 6A Flange

Api Flange,Api 6A Flange Factory,Api 6A Normalized Flange,Api 6A Std Flange

New Century Machinery Co., Ltd ,