Installation instruction from deep well submersible pump manufacturers

These are the notes for operation many deep well submersible pump manufacturers usually offer.

Notes for test run

After installation and adjustment, the pumping unit can take a test run. Before the test run, you should do the following work.

1) After confirming that the pump head and the pump motor are coaxial, turn the coupling with hand to feel its force and hear its sound. Normally, there should be no abnormal sound and the force should be even. Check if everything is normal with the pump head and the pump motor. For example, some rotary parts may become loose and fall off; something may clog some parts of the pump; the pump freezes inside; the packing or mechanical seal is too tight or too loose; the shaft bearing is short of lubricating oil or the shaft bends, etc.

2) Check if the power supply system, power source switch, meters, circuits and other relative equipment are intact and normal.

3) Open the sluice valve, if there is a sluice valve, for water inlet completely. At the same time, close the sluice valve for water outlet and the pressure meter. Fill the pump with water. If the pump has no bottom valve, we can create vacuum inside for the sake of filling water.

4) Loosen the screw for air bleeding on the pump gland to exhaust all the air possibly remaining inside, and then tighten the screw again.

5) Check again if all bolts on the pumping unit are ok.

6) Check if the conditions for water inflow have been met, such as the height of inflow water surface, the pressure at pump inlet, etc.

7) When all relative facilities have been confirmed normal, you can start the motor. The working stuff shall not stay too close to the motor when it is starting. The motor should not run for a time longer than 2 to 3 minutes when the sluice valve for water outflow is closed. Otherwise, if it runs for too long, the liquid inside the pump will become hot, which is easy to cause an accident. Switch on the pressure meter, and gradually open the sluice valve for water outflow. By then, the reading on pressure meter at pump outlet should gradually goes down while the flow quantity and working electric current gradually rises up.

WEL pump is one of the deep well submersible pump manufacturers. We feel glad if the knowledge we share can be helpful to you. For more information, please contact info@welpump.com.