Replacing a 100ft (submersible 30 meters) submersible borehole pump can be daunting. This article will guide you through the process step by step.
Step 1. First of all, you must turn off the pump switch
Make sure the pump is off while checking the water supply. Remember that your chamber may still be under water pressure. If the water supply ends after 5 minutes, the pump is turned off.
Step 2. Locate and remove the top (cover)
The cover will be secured with 3 - 1/4 "bolts, use a 7/16" wrench to remove them.
Step 3. Shine a flashlight at the wellhead
You can draw some early conclusions on how to replace your pump. The first thing to look at is the connection to the house. It will be either a pitless adapter or some other connection. You also need to check if you have PVC or flexible pipes for the main water pipeline. Water connections can be difficult, white PVC pipes are immediately visible, black flex is faintly visible. We'll look at a pitless adapter and black flexible pipes.
Step 4. Now that we know how to approach this removal, we can put together the necessary tools
You will need to make a "long" T "tool, 1" 40 sch 5 '(approximately 1.5m) long, threaded at both ends, T at one end and 26 "nipples. 2lb hammer and at least one other person to help you Two people will be better as the flex can be 200 '(61m) long and difficult to handle.
Step 5. Place the "T" screw on the top of the pitless adapter and disconnect the electrical connections
You are ready to be deleted.
Step 6. When you are ready, have one person pull on the small cable that is blocked by the pitless adapter, and the other person pulls up on the "T" piece
After the pitless adapter has been removed, the person handling the interlock cable can grab the pitless adapter. Then you can detach the "T" piece from the pitless adapter. The 3/4 "HP pump, which is currently in the hole, weighs about 60 kg when in the water, that is, still deep in the pipe well.
Step 7. Now that the "T" piece has been removed, you can begin to pull the flexible tube upward
The second person should hold the coiled tubing in a straight line. You will need a 100 '(approximately 30 m) area if you have a 100' (30 m) deep well. If you have a third person, they can help the first person to take the pump out, which can be exhausting for some people.
NOTE, the flexible pipe will become slippery when you reach the water level. Use rubber gloves with a non-slip grip, but this is not necessary
Step 8. After you have prepared the pump, you can start removing the old pump
The new pump must match the specifications of the old pump. There are 2 different models, one with a control box and one without. In addition, you must consider line voltage (115 or 230 volts), Hz (50 or 60), HP, and flow in GPM (gallons per minute) or LPM (liters per minute). When purchasing a new submersible pump, please remember to purchase the most reliable one, consider it well. Losing water from a cheaper pump can cost you more in the long run.
Step 9. When connecting a new pump, make sure you have an electrician knowledgeable person or a contractor making the connections
For example, for a 230 volt pump with 2 black wires and 1 green wire (ground). When you are ready to make the electrical connections, be sure to put some heat shrinkable plastic on each wire before accepting the crimp connections. Remember that you will not want to remove the pump just because of a bad connection. After you finish crimping, place the heat shrink tubing behind the crimp connectors. You must add a good amount of heat to make the pipes shrink, there will not be enough heat from a match or lighter. A small propane burner can be used. After shrinking, attach the tape of wire to the pipe. Add 1/8 "stainless steel cable to the pump to make removal easier next time. To do this, you will need the amount of water pipe (100 'in this example), plus an extra 10' to secure the loops and connect to the lift in next time you also need 6 stainless steel clamps, use 3 on each end.
Step 10. You are now ready to install the new pump
Place the pump close to the bore and move the coiled tubing in a straight line to the wellhead.
Step 11. As before, 2 people are needed at the wellhead and a third person to run the coiled tubing at the wellhead
Insert the pump into the hole and slowly start lowering. When the pump reaches the water level, it can lead to weight loss. This is completely normal, as the elements weigh less in water than in air.
Step 12. To install the pitless adapter, you need to install the "T" piece again
One person should install the pitless adapter and the other should hold the screw. You can finish installing the pitless adapter in place.
Step 13. When the pitless adapter is secured, you can remove the "T" piece
Please be sure that it is installed correctly, as this may damage the case.
Step 14. Now you can connect the connectors at the top of the well, if you do not feel confident doing this, consult a specialist
Step 15. Before installing the cover, it is best to check if you have water
Connect the hose to the hose connection to the tank chamber, turn on and off the water going to the house. Move the switch to the pump. Your water should gurgle, this sound is generated when there is air pressure pushing. If you have no water after 5 minutes; turn off the pump switch. This is not a problem, you need to wait 5 minutes and let the water that is being pumped into the pipe and you will hear the bubbling of air bubbles. Then after 5 minutes or so, turn on the breaker and you will have a good flow of water.