How to Replace a Well Pump

If you live outside city limits, you may get your water supply from a well. The heart of your well system is the well pump. If the water is close to the surface, you may have a shallow well driven by a jet pump, and if your water is over 25 feet (7.63 m) deep, you may have a submersible pump system. If the pump breaks, you may have to install a new pump. Follow these guidelines to replace your well pump.

EditMethod 1 of 6: Preparation

1. 
   1
   Obtain a new pump.
   • Determine what type of pump you need. Submersible pumps are used in deeper wells and will be beneath the ground in a well casing, while a jet pump is used in shallow wells that are less than 25 feet (7.63 m) deep and will be above ground.
   • Find out the power ratings, the gallons (l) per minute pumped and the well size before you install a new pump.
   • Locate well pumps at a water supply retail store, hardware store or online. When replacing well pumps, be sure to purchase the correct type of pump.
2. 
   2
   Turn off the power to your pump at the main circuit breaker. A circuit breaker controls the flow of electricity to your house, and the well should be on a separate switch.
3. 
   3
   Turn on a hose or faucet to release all the pressure from holding tanks or pressure tanks by letting the water drain out. When you install a new pump, you need to drain the water from the pumping system.

EditMethod 2 of 6: Replace a Jet Pump

1. 
   1
   Use a plumber's wrench to take off the inlet and outlet ports on the old well pump.
2. 
   2
   Unscrew the wires on the old jet pump with a screwdriver.
3. 
   3
   Remove the old pump.
4. 
   4
   Apply Teflon piping tape on the threads of the outlet and inlet pipes, wrapping tape around each pipe at least 5 times to get a proper seal. When replacing well pumps, you need a good seal to prevent water leaks.
5. 
   5
   Install the new pump, following manufacturer's instructions.
   • Screw the pipe from the well, or inlet pipe, to the inlet pipe on the jet pump with a plumber's wrench.
   • Screw the pipe that brings water to the house, or outlet pipe, to the outlet pipe on the jet pump with a plumber's wrench.
6. 
   6
   Connect the wires to the new pump, matching the wire colors. Tighten the wires to the electrical terminal with a screwdriver.
7. 
   7
   Turn the circuit breaker back on and test your new pump.

EditMethod 3 of 6: Replace a Submersible Pump

1. 
   1
   Open the well cap. The well cap is on the round piece of metal sticking out from the deep well, and will give you access to the submersible pump.
   • Take off the hex nuts that hold the cap in place with a socket wrench.
   • Lift the well cap off the well housing.
2. 
   2
   Pull the old pump out of the well casing with a winch. A winch has the strength to pull the submersible pump out without damaging the casing or yourself.
3. 
   3
   Take the discharge line off the top of the pump with your plumber's wrench.When replacing well pumps, you need to reuse the discharge line, which connects the pump to the main water tank in your water system.
4. 
   4
   Follow manufacturer's directions to attach your new pump.
5. 
   5
   Apply sanitation liquid to clean the well casing. When installing well pumps, debris may fall into the casing, which can cause problems.
6. 
   6
   Lower the submersible pump into the well casing with the winch after you have attached the discharge line.
7. 
   7
   Replace the well cap and tighten the hex nuts to secure it.
8. 
   8
   Turn the power back on and test your new pump.

EditMethod 4 of 6: Preparation

1. 1
   Obtain a new pump.
   
   
   • Determine what type of pump you need. Submersible pumps are used in deeper wells and will be beneath the ground in a well casing, while a jet pump is used in shallow wells that are less than 25 feet (7.63 m) deep and will be above ground.
   • Find out the power ratings, the gallons (l) per minute pumped and the well size before you install a new pump.
   • Locate well pumps at a water supply retail store, hardware store or online. When replacing well pumps, be sure to purchase the correct type of pump.
2. 2
   Turn off the power to your pump at the main circuit breaker. A circuit breaker controls the flow of electricity to your house, and the well should be on a separate switch.
   
   
3. 3
   Turn on a hose or faucet to release all the pressure from holding tanks or pressure tanks by letting the water drain out. When you install a new pump, you need to drain the water from the pumping system.

EditMethod 5 of 6: Replace a Jet Pump

1. 1
   Use a plumber's wrench to take off the inlet and outlet ports on the old well pump.
2. 2
   Unscrew the wires on the old jet pump with a screwdriver.
   
   
3. 3
   Remove the old pump.
4. 4
   Apply Teflon piping tape on the threads of the outlet and inlet pipes, wrapping tape around each pipe at least 5 times to get a proper seal. When replacing well pumps, you need a good seal to prevent water leaks.
5. 5
   Install the new pump, following manufacturer's instructions.
   • Screw the pipe from the well, or inlet pipe, to the inlet pipe on the jet pump with a plumber's wrench.
   • Screw the pipe that brings water to the house, or outlet pipe, to the outlet pipe on the jet pump with a plumber's wrench.
6. 6
   Connect the wires to the new pump, matching the wire colors. Tighten the wires to the electrical terminal with a screwdriver.
7. 7
   Turn the circuit breaker back on and test your new pump.

Edit

1. 1
   Open the well cap. The well cap is on the round piece of metal sticking out from the deep well, and will give you access to the submersible pump.
   • Take off the hex nuts that hold the cap in place with a socket wrench.
   • Lift the well cap off the well housing.
2. 2
   Pull the old pump out of the well casing with a winch. A winch has the strength to pull the submersible pump out without damaging the casing or yourself.
3. 3
   Take the discharge line off the top of the pump with your plumber's wrench.When replacing well pumps, you need to reuse the discharge line, which connects the pump to the main water tank in your water system.
4. 4
   Follow manufacturer's directions to attach your new pump.
5. 5
   Apply sanitation liquid to clean the well casing. When installing well pumps, debris may fall into the casing, which can cause problems.
6. 6
   Lower the submersible pump into the well casing with the winch after you have attached the discharge line.
7. 7
   Replace the well cap and tighten the hex nuts to secure it.
8. 8
   Turn the power back on and test your new pump.

EditTips

• Check the discharge line attached to your submersible pump for blockage periodically to avoid flooding or damage to your pump.
• Not all jet pumps have a 1-way valve. When you purchase a jet pump, find a pump that has the 1-way valve included, or buy the 1-way valve and plumb it into your water system.
• 
  
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