How to do preventive maintenance of a Submersible Pump ?

Preventive maintenance is an important aspect of ensuring the continued operation and longevity of submersible pumps. Here are the steps for performing basic preventive maintenance on a submersible pump: 

1. Clean the pump: Clean the pump and its surrounding area, removing any debris or foreign objects that could clog the pump or cause damage. Use a soft brush and mild detergent to clean the pump’s exterior. 
2. Check the wiring and connections: Inspect the wiring and connections for any signs of corrosion, loose connections, or damaged wires. Replace or repair any damaged components, and tighten any loose connections. 
3. Check the control panel: Inspect the control panel, including the switch, timer, and control box, for proper operation. If any components are not working correctly, repair or replace them. 
4. Check the motor: Inspect the motor for signs of wear or damage, and replace it if necessary. Also, check the motor’s voltage and amperage to make sure it is within the manufacturer’s specifications. 
5. Inspect the impeller: Inspect the impeller for any signs of damage, such as cracks, missing vanes, or excessive wear. If the impeller is damaged, it should be replaced. 
6. Check the discharge pipe: Check the discharge pipe for any signs of corrosion, blockages, or damage, and repair or replace it if necessary. Also, make sure the discharge pipe is securely attached to the pump and the discharge valve. 
7. Check the check valve: Inspect the check valve for proper operation, and replace it if necessary. Also, make sure the check valve is properly positioned in the discharge pipe. 
8. Check the discharge valve: Inspect the discharge valve for proper operation, and replace it if necessary. Also, make sure the discharge valve is properly attached to the discharge pipe. 
9. Check the pump casing: Inspect the pump casing for any signs of corrosion, cracks, or damage, and repair or replace it if necessary. Also, make sure that the casing is securely attached to the pump, and tighten any loose bolts if necessary. 
10. Test the pump: After completing the preventive maintenance, test the pump to make sure it is operating correctly, and make any necessary adjustments. 

In summary, performing preventive maintenance on a submersible pump can help ensure its continued operation and longevity. The steps for performing basic preventive maintenance include cleaning the pump, checking the wiring and connections, checking the control panel, checking the motor, inspecting the impeller, checking the discharge pipe, checking the check valve, checking the discharge valve, checking the pump casing, and testing the pump.