Master the Art: How to Extract Submersible Pumps from Borewells Like a Pro

Submersible pumps play a crucial role in extracting water from borewells, ensuring a steady supply for households, industries, and agriculture. However, over time, these pumps may require maintenance or replacement. One essential aspect of submersible pump maintenance is knowing how to remove it from the borewell. This blog post provides a step-by-step guide to assist you in this task effectively.

Safety Precautions

Before embarking on the removal process, it is imperative to prioritize safety. Ensure you have the necessary protective gear, including gloves, safety glasses, and a hard hat. Additionally, verify that the power supply to the pump is disconnected and locked out to prevent any electrical hazards.

Tools and Materials

To remove a submersible pump from a borewell, you will need the following tools and materials:

• Lifting equipment: A winch or hoist with a capacity sufficient to lift the weight of the pump and its components.
• Safety harness: To secure yourself while working over the borewell.
• Lifting slings: Durable slings designed to support the weight of the pump.
• Wrench: A large wrench or socket set to loosen and remove the pump’s bolts.
• Electrical tape: To insulate exposed wires.
• Flashlight: To illuminate the borewell during the removal process.

Step-by-Step Removal Process

1. Prepare the Borewell

• Remove the well cap or cover.
• Lower a flashlight into the borewell to assess the depth and condition of the pump.

2. Disconnect the Power Supply

• Ensure that the power supply to the pump is disconnected and locked out.
• Cut and tape any exposed wires to prevent electrical hazards.

3. Attach the Lifting Slings

• Secure the lifting slings around the pump’s discharge head or base.
• Ensure the slings are properly attached and can withstand the weight of the pump.

4. Hook up the Lifting Equipment

• Connect the lifting equipment to the lifting slings.
• Test the lifting equipment to ensure it is functioning correctly.

5. Loosen the Pump Bolts

• Lower the lifting equipment into the borewell until it reaches the pump.
• Use the wrench to loosen the bolts that secure the pump to the drop pipe.

6. Lift the Pump

• Carefully lift the pump out of the borewell using the lifting equipment.
• Guide the pump as it rises to prevent any damage to the pump or the borewell.

7. Disconnect the Drop Pipe

• Once the pump is clear of the borewell, disconnect the drop pipe from the pump’s discharge head.
• Cap or plug the drop pipe to prevent debris from entering the borewell.

8. Inspect and Clean the Pump

• Inspect the pump for any damage or wear.
• Clean the pump using a water hose or a mild detergent solution.
• Lubricate any moving parts as per the manufacturer’s instructions.

Reinstallation of the Submersible Pump

Once the pump has been removed and serviced, you can reinstall it by following the steps in reverse order. Ensure that all connections are secure and that the pump is properly aligned before lowering it back into the borewell.

Troubleshooting Common Issues

During the removal or reinstallation process, you may encounter some common issues. Here are some troubleshooting tips:

• Pump is stuck: If the pump is stuck in the borewell, try gently rocking it back and forth while pulling it up.
• Bolts are rusted: If the pump bolts are rusted, apply a penetrating oil and let it sit for a while before attempting to loosen them.
• Lifting equipment is inadequate: Ensure that the lifting equipment you are using has sufficient capacity to lift the weight of the pump.
• Pump is damaged: If the pump is damaged during the removal process, do not attempt to repair it yourself. Contact a qualified technician.

Final Thoughts

Removing a submersible pump from a borewell requires careful planning, safety precautions, and proper execution. By following the steps outlined in this guide, you can safely and effectively remove your pump for maintenance or replacement. Remember to inspect and clean the pump regularly to ensure its optimal performance and longevity.

Frequently Discussed Topics

1. What is the recommended frequency for removing a submersible pump for inspection?

The frequency of pump removal for inspection depends on several factors, such as the usage patterns, water quality, and borewell conditions. Generally, it is recommended to inspect the pump every 2-3 years.

2. Can I remove a submersible pump without using lifting equipment?

It is not advisable to remove a submersible pump without using lifting equipment. The pump can be heavy and difficult to lift manually, which could lead to injury or damage to the pump or the borewell.

3. What should I do if I encounter water leakage during the removal process?

If you notice water leakage during the removal process, stop immediately and check for any loose connections or damage to the pump or the drop pipe. Tighten any loose connections and replace damaged components if necessary.