How to replace the pump in the well

From trouble with interruptions in water supply, no one is insured. They can arise for a variety of reasons, and one of them is very sad and costly - a failed pump. Besides the fact that the device itself is rather expensive, replacing a pump in a well is a rather complicated operation, during which many problems can arise.

Of course, this is not about a surface pump, which will not be difficult to replace, but about a deep well located inside the well. Next, we will look at how to overcome these difficulties, if you are going to do the work without the help of specialists.

What is the reason why the pump can fail

There are quite a few reasons for the failure of the mechanism; hereinafter, we give the most common ones:

• Incorrectly selected automatic power;
• Substandard brand product.
• The device worked for wear due to low power. Unskilled selection of the device leads to a rapid failure of the system. For example, if the device is designed for a depth of 50 meters, but was immersed at 80 meters.
• Flaws of operation or installation.
• Power outages occurred. As a rule, cheap models suffer from this.
• There were drops in the water level, as a result of which the device worked in the air. This reason also applies only to low-cost models, since expensive products have protection that turns off the device.

All these reasons must be prevented immediately after installation of the equipment. However, if you didn’t have time to do this and the equipment still failed, then there is nothing left to do but buy a new one and install it.

Pump replacement

Necessary tools and materials

Once you have verified that replacing the ECW pump in the well is really necessary, you can proceed to work.

To do this you will need the following elements:

• Electric soldering iron;
• Construction dryer;
• Locksmith tools;
• Scissors;
• A complete set of consumables to replace the device;
• Shrink sleeve.

In addition, of course, it is desirable to have experience with plumbing.

Note! To replace the device, several people will need help, since it is quite difficult to lift the device from a great depth.

Preparatory work

At the second stage, it is necessary to prepare the equipment for replacing the device.

The procedure is as follows:

• Pipeline tip must be disconnected from the well line, which goes into the house.
• Then you need to turn off the power to the device.
• After that, you can unscrew the tightening nut of the wellhead.

Lift pump

After doing this work, you should proceed to the most difficult work - lifting the pump to the surface. Pull the cable evenly, without jerking. To facilitate the work, you can use a winch.

Note! It is necessary to lift the device with a safety cable, otherwise you risk missing it to the bottom of the well. This is due to the fact that over time, the protracted system becomes unreliable.

If the operation was successful, and the unit was on the surface, it must be disconnected from the line and a new set of connecting elements should be prepared. After that, the well pump is replaced. It should be noted that when replacing, it is necessary to use a new coupling and non-return valve, since the old elements are not suitable for reuse.

Loading a new pump

Further installation instructions for the device are as follows:

• The device must be connected to the pipeline.
• Then the power supply cable of the device is soldered. It should not forget about the shrink sleeve, which will ensure the tightness of the connection.
• Next you need to securely secure the cable and check its tension.
• It is necessary to lower the cable in the same way as to lift it - gently and smoothly to prevent strikes against the walls of the well.
• Next, you should tighten the wellhead, connect all the fittings and configure the automation relay according to the specified parameters.

This work on the replacement is completed, you can now begin to check the system.

Possible problems and solutions

It is not always possible to replace the pump as described above, because of its jamming in the well. Next, consider the reasons for such trouble and how to eliminate it.

Pump jammed with electrical cable

The most common problem when lifting a device is its jamming due to an electrical cable that forms a loop and falls between the device and the wall of the well.

Tip! To avoid this situation, you need to tighten the cable, cable and hose clamps even during installation of the device.

To solve this problem, push the device down a little. In some cases it is enough to simply slide the hose down. If the pump is not stuck too deep, then it can be pushed through with any available material — pipe or fittings.

Casing pipe stuck

Sometimes the device is wedged due to the deformation of the casing as a result of ground movements or the influx of slag from welding. In this case, you can try to raise the pump, rotating it around its axis. If the device has a non-perfectly symmetrical shape, then it is quite possible that it will be possible to pull it out.

Pump silted

This problem may occur if the well has not been used for a long time. The sludge level can exceed the pump even by a meter or two. In this case, you should get the machine in sway - slowly pulling it and loosening it.

Tip! It is advisable to pull the cable and the cable at the same time, avoiding dangerous tension, so that a breakage does not occur. Otherwise, you will have to use the services of specialists, the price of which can be very substantial.

Conclusion

Despite the complexity of the operation, to replace the pump, in most cases, you can do it yourself. However, for this it is necessary to adhere to the recommendations given above, and to carry out the work very carefully. Otherwise, the situation can only get worse (see also the article Device well under water: the main elements and tips on the selection of components).

Additional information on this topic can be obtained from the video in this article.