How to Install a Deep Well Jet Pump: A Step-by-Step Guide

Is your well water supply unreliable? Perhaps your old pump has failed, or you’re setting up a new water system? Installing a deep well jet pump might seem like a complex task, but with the proper guidance, it’s a very manageable DIY project. This comprehensive guide will walk you through the entire process, from preparing the pump to restoring your water flow. We’ll cover everything from converting the pump for deep well use to troubleshooting common issues. Let’s get started!

• Understanding Deep Well Jet Pumps
  • Converting Your Jet Pump for Deep Well Use
• Preparing for Your Deep Well Jet Pump Installation
  • Prioritizing Safety
  • Removing Your Old Pump
• Installing Your New Deep Well Jet Pump
  • Preparing the Well Pipe
  • Connecting the Discharge Piping
  • Installing the Pump
  • Installing the Pressure Switch and Regulator
  • Connecting to the Pressure Tank
  • Wiring the New Pump
• Priming and Testing Your Deep Well Jet Pump
• Troubleshooting Common Issues
• Conclusion
• Call to Action
• FAQ Section

Understanding Deep Well Jet Pumps

Before we begin, it’s essential to understand that a deep well jet pump operates differently from a shallow well pump. Deep wells, typically ranging from 25 to 100 feet, require the pump’s ejector to be positioned inside the well itself. This ejector helps push water up to the pump, making it efficient at these greater depths. Shallow well pumps, in contrast, rely on suction to draw water up the well. This key difference is crucial for ensuring your new pump functions correctly.

Converting Your Jet Pump for Deep Well Use

Most convertible jet pumps, like the one in our example, come pre-configured for shallow well operation. Here’s how to convert it for a deep well application:

1. Identify the Ejector: The ejector is the component that will be submerged in the well. It’s attached to the front of the pump.
2. Remove the Shallow Well Ejector: Using an adjustable wrench, carefully loosen and remove the two screws holding the shallow well ejector in place. Gently pull the ejector straight out, noting the gasket. Set this aside, as it will not be needed.
3. Remove the Venturi: Inside the old ejector, you’ll find a venturi designed for shallow wells. Unscrew and remove this venturi.
4. Install the Deep Well Venturi: Insert the new, longer deep-well venturi into the ejector housing. Tighten it securely with your wrench. This step is critical, as this venturi will be submerged and will draw water to the pump.

With this conversion complete, your pump is ready for deep well operation. Always consult your pump’s user manual for specific instructions and safety guidelines, as models and brands can differ.

Preparing for Your Deep Well Jet Pump Installation

Before dismantling your old system, let’s ensure we’re properly prepared for a smooth installation.

Prioritizing Safety

• Adhere to Local Codes: Always comply with all local and state plumbing and electrical codes. This is non-negotiable for safety and compliance.
• Cut the Power: Shut off all electrical power to the pump at the breaker or disconnect. Double-check with a non-contact voltage tester to ensure no power is flowing to the pump.
• Turn Off the Water Supply: Turn off the water supply to the pump. There should be a shutoff valve before the pump.

Removing Your Old Pump

1. Release Trapped Pressure: Remove the plugs on the pump housing to release any trapped pressure. Use a pipe wrench for this.
2. Drain the Pump: Locate the drain plug at the bottom of the pump housing. Place a container underneath and remove the plug to drain any remaining water.
3. Disconnect the Piping: Using a pipe wrench, disconnect the piping from the pump. This includes the line to the pressure tank and the lines to the well.
4. Disconnect Pressure Switch Wiring: Disconnect the wires from the pressure switch. Note the wire connections for reassembly. Remove the ground wire first, then the live wires.
5. Remove the Old Pump: Once everything is disconnected, carefully remove the old pump from the area.

Installing Your New Deep Well Jet Pump

With the old pump removed, it’s time to install the new one.

Preparing the Well Pipe

1. Apply Teflon Tape: Wrap all threaded pipe ends with Teflon tape to ensure a watertight seal.
2. Assemble the Ejector: Thread the ejector into the deep well pipe. Make sure it’s nice and tight.
3. Install the Foot Valve: Attach the foot valve to the bottom of the pipe. This valve prevents water from flowing back into the well. Tighten it securely with a pipe wrench.

Connecting the Discharge Piping

1. Attach Fittings: Attach the appropriate fittings to the top of the ejector, including the 1 1/4" fitting and the 1" fitting. Ensure they’re tight.
2. Lower the Assembly: Carefully lower the assembled ejector and piping into the well. Use clamps or ropes to secure the pipe and prevent it from falling into the well. Note: a well can be 100 feet deep, so a secure mount is needed.

Installing the Pump

1. Attach Piping: Attach the 1-inch pipe to the inlet of the pump. Follow this by attaching the 1 1/4" pipe to the pump’s intake. Use Teflon tape on all connections to ensure no air leaks.
2. Connect to Well Assembly: Carefully align and connect the pump to the well pipe assembly. Tighten all fittings securely.

Installing the Pressure Switch and Regulator

1. Remove Vent Plug: Locate the vent plug on the pressure switch and remove it.
2. Install Pressure Regulator: Thread the pressure regulator into the top of the pump. Use Teflon tape for a good seal.
3. Connect the Tube: Attach the vent tube from the pressure switch to the pressure regulator. Make sure the tubing is free of kinks or bends.

Connecting to the Pressure Tank

1. Attach Tank Piping: Connect the tank piping to the pump, using the existing piping as a guide. Ensure all connections are tight and secure.
2. Test the Tank Piping: Check all connections for tightness and ensure there are no leaks.

Wiring the New Pump

1. Remove Pressure Switch Cap: Remove the cap to expose the wiring terminals inside the pressure switch.
2. Install Grommet: Install the grommet to provide a watertight seal for the electrical wiring.
3. Connect Ground Wire: Connect the ground wire to the ground pin in the pressure switch.
4. Connect Live Wires: Connect the two live wires from the electrical supply to the appropriate terminals in the pressure switch. Always consult your local electrical codes and consider the assistance of a professional electrician if you are not comfortable with electrical work.
5. Install Cap: Secure the cap on the pressure switch.

Priming and Testing Your Deep Well Jet Pump

1. Fill the Pump Housing: Fill the pump housing completely with water. This is crucial for proper priming.
2. Fill the Deep Well Piping: Fill the deep well piping with water.
3. Check for Bubbles: Watch the water in the pump housing. If you see bubbles, there might be air in the piping. Tighten all connections and check again.
4. Install the Regulator: Thread the regulator into the top of the pump.
5. Connect the tubing: Connect the tubing to the bottom of the regulator.
6. Open a Faucet: Open a faucet slightly to let air escape from the system.
7. Turn on the Pump: Turn on the electrical power to the pump. The pump should start running and begin pumping water.

Troubleshooting Common Issues

If your deep well jet pump doesn’t work as expected:

• Check for Air Leaks: Ensure all fittings are tight and that there are no leaks.
• Check Electrical Connections: Double-check all electrical connections and ensure the correct voltage is being supplied to the pump.
• Check the Foot Valve: Make sure the foot valve is working properly and is not blocked.
• Re-prime the Pump: If the pump fails to prime, repeat the priming process, making sure to remove all air from the system.

Conclusion

Installing a deep well jet pump is a challenging but rewarding DIY project. By carefully following these steps and referring to your pump’s manual, you can successfully replace your old pump and restore your water flow. Remember to prioritize safety and take your time. Proper installation will ensure years of reliable service from your new deep well jet pump.

Call to Action

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FAQ Section

1. What is the difference between a shallow well and a deep well pump?

2. Shallow well pumps use suction, while deep well pumps use an ejector inside the well to push water up.

3. Can I convert a shallow well pump to a deep well pump?

4. Yes, many convertible jet pumps can be converted by installing a deep well ejector and venturi.

5. What is a foot valve and why is it necessary?

6. A foot valve is a one-way valve at the bottom of the well pipe that prevents water from flowing back into the well.

7. What should I do if my pump is not priming?

8. Make sure all connections are tight, and that the pump and pipes are completely filled with water.

9. Do I need Teflon tape on every connection?

10. Yes, Teflon tape is essential for creating a watertight seal on all threaded connections to prevent leaks and ensure proper operation of the deep well jet pump.

11. What should I do if I see bubbles in the pump housing after priming?

12. Bubbles indicate air in the system. Tighten all connections and re-prime the pump.

13. How do I know if my pump is wired correctly?

14. Consult your pump’s manual and local electrical codes. If unsure, seek professional help from a qualified electrician.

15. What should I do if the pump runs but no water is coming out?

16. Check for air leaks, a blocked foot valve, or a faulty pressure switch.

17. How often should I maintain my well pump?

18. Regularly check for leaks and pressure issues. Consult your manual for specific maintenance recommendations.

19. What tools do I need for a deep well jet pump installation?

    • Adjustable wrenches, pipe wrenches, Teflon tape, a non-contact voltage tester, wire strippers, and safety gear, along with a secure way to suspend the well pipe during installation.