Do-it-yourself installation, connection and first start-up of a pumping station


Autonomous water supply is a priority engineering structure in a private house, especially if there is no centralized water supply nearby. To ensure a constant supply of water to the house, you will need to install and connect a pumping station. Although this equipment is not cheap, you can still save a significant amount if you install and connect the station yourself.

Options for the installation site of the pumping station

When planning to assemble and connect the pumping station to the water supply in the house, the following points should be considered.

  1. The unit must be located near a water source. This will ensure stable suction of liquid from the source and smooth operation of the station. If the equipment is placed far from the well (well), then it will not be able to pump water and will fail.
  2. To install the equipment, you need to choose a dry, well-ventilated and warm place.
  3. The device must not touch any objects or walls.
  4. Access to the equipment for routine inspection and repair work should be free.

Important! When installing a station with a surface pump, the high noise level that it creates during operation should be taken into account.

Based on the foregoing, there may be several options for installing the unit.

In the house

For the correct operation of the station, the most ideal option is a heated room. Well, if a private house has boiler room with good sound insulation.

The scheme of the pumping station in the house

In extreme cases, water supply equipment can be installed in the hallway, bathroom, hallway or closet. But these rooms should be located as far as possible from the rest rooms (bedroom, living room). The device is placed in a cabinet or covered with a special casing that provides sound insulation.

In the basement

Most often, pumping equipment is installed in the basement of the house or in the basement. Sometimes the unit is installed under the floor, providing access to it through the hatch. In any case, the place where the device is installed must be with good sound and waterproofing. Also, it should be warm enough so that the temperature in it does not fall below 0 ° C in winter.

The scheme of the pumping station in the basement

in the well

To place the station in the well, they install small platform. It is fixed below the freezing line of the soil.

The scheme of the pumping station in the well

Advice! The well is recommended to be well insulated from above. But with such an installation of equipment, access to it for maintenance and repair will be difficult.

In a caisson

In this case, in order to properly install the pump, a small room (caisson) is arranged around the water source, of sufficient width and depth (below the freezing line).

From above the caisson covered with a hatchthrough which the unit is serviced. The cover is well insulated for the winter.

Diagram of a pumping station in a caisson

Thanks to the pit, it becomes possible to provide autonomous water supply with a surface pump, even if the water level from the surface of the earth is at a depth of 9-11 meters.

In case of station assembly with submersible pump you should not worry about sound insulation, since the unit is located deep underground, and its operation is almost inaudible. All elements of the station are installed in any heated room, and the pump itself is installed in a well or well. This option for assembling a pumping station is well suited for a summer residence.

Pump station piping options

Under the piping of the pumping station, it is customary to mean the connection of pumping equipment to the piping system and other elements.

Connecting the station to the well

For the installation of a pumping station in a caisson or in a house, the same scheme is used. The beginning of the diagram is supply pipeline, which is laid underground, at a depth below the freezing level of the soil. At the end of the pipeline, a coarse filter is installed, consisting of a fine mesh. After the filter is set check valve, preventing the backflow of water when the pump is turned off. Below is a flow diagram (drawing) of a pumping station.

Scheme of connecting the station to the well

Important! This scheme for connecting a pumping station implies the location of the supply pipe inside the foundation of the house. It should be well insulated in this place.

Further, the supply pipe is connected to the pump using a coupling. The following figure shows a simple pump station piping scheme.

A simple pumping station piping scheme

The assembly diagram above can be improved (see figure below) if it is required to connect to the unit multiple water points.

Assembly diagram

Well connection

To connect a station with a surface pump to a well in which the dynamic water level is below 8 meters, it will be necessary to install it in a caisson with a depth of about 2 m. If a submersible pump is used, a hydraulic accumulator and various electrical equipment, such as a voltage stabilizer, an automation system, etc., can also be placed in the caisson.

Well Connection Diagram

Automation of the process of taking water into the pressure tank is implemented via pressure switch, which turns the pump on and off at certain pressure indicators in the system. Also, to automate the operation of the pump, you can independently make a control unit. Below is a circuit diagram of such a unit.

Wiring diagram

The control unit works according to the following principle:

  • relay Koneturns the unit on and off;
  • S switchoneis responsible for the mode of operation (water rise-drainage);
  • the control of the water level in the storage tank is monitored by sensors F1 and F2;
  • power is turned on by switch Sone provided that the water level is below sensor F1 — in this case, the unit is switched on through contacts Kone;
  • when the water reaches sensor F1, transistor VT will openoneafter which the relay K will turn onone.

This circuit uses a low power transformer from a conventional broadcast receiver. The voltage supplied to the capacitor must be at least 24 V. Any diodes can be used, with a reverse voltage of more than 100 V and a current of 1 A.

The assembly of the station with a submersible borehole pump is carried out according to the scheme below.

Assembly of a station with a submersible borehole pump

Connecting the station to the water supply system

Sometimes it becomes necessary to use a pumping station, even when a centralized water supply is connected to the house. A station with a storage tank is usually installed if low pressure in the water supply system. Also, this equipment will be indispensable if the water supply through the main is carried out at certain hours.

The pumping station is connected to the centralized water supply as follows:

  • bring a pipe from the centralized line to the storage tank;
  • connect the pump intake pipe to the tank;
  • the outlet pipe from the pump should be connected to the house’s plumbing system;
  • lay and connect electrical wiring to the unit;
  • test run the device, then adjust the equipment for the desired performance.

Rules for launching and configuring equipment

Before starting the pumping equipment for the first time, it is first necessary to prepare the accumulator, since the stability of the entire water supply system depends on the correctly selected pressure in it.. A high pressure in the tank will provoke frequent turning on and off of the unit, which will not have the best effect on its durability. If there is an underpressure in the air chamber of the tank, this will lead to excessive stretching of the rubber bulb with water, and it will fail.

The hydraulic tank is prepared as follows. Before pumping air into the tank, make sure that the pear inside it is empty. Next, check the pressure in the tank with a car pressure gauge. As a rule, new tanks are filled with air at the factory. Hydraulic tanks up to 25 liters should have a pressure in the range of 1.4-1.7 bar. In containers of 50-100 liters, the air pressure should be in the range from 1.7 to 1.9 bar.

Hydraulic tank for pumping station

Advice! If the pressure gauge readings are lower than recommended, then you should pump air into the tank using a car pump and adjust it, referring to the pressure gauge readings.

First launch of the station

To correctly start the pumping station for the first time, perform the following steps in stages.

  1. Unscrew the plug that closes the water hole located on the unit body. On some devices, instead of a cork, there may be a valve. It should be opened.
  2. Next, fill the suction pipe and pump with water. Stop pouring liquid when it starts to flow out of the fill hole.
  3. When the suction pipe is full, close the hole with a plug (close the valve)
  4. Connect the station to the mains and turn it on.
  5. To remove the remaining air from the equipment, slightly open the tap at the water intake point closest to the pump.
  6. Let the unit run for 2-3 minutes. During this time, water should flow from the tap. If this does not happen, then turn off the pump and refill the water, and then start the pumping station.

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Automation setting

After a successful launch, you need to check and configure the operation of automation. The new pressure switch has factory settings for upper and lower pressure thresholds, upon reaching which it turns on or off the pump. Sometimes it becomes necessary to change these values ​​by setting them to the desired on-off pressure.

Automation adjustment is as follows.

  1. Turn off the unit and drain the water from the accumulator.
  2. Remove the cover from the pressure switch.
  3. Next, you should start the pump to start collecting water in the hydraulic tank.
  4. When turning off the device, write down the pressure gauge readings — this will be the value upper shutdown threshold.
  5. After that, open the tap at the farthest or highest point of the water intake. As water flows out of it, the pressure in the system will begin to decrease, and the relay will turn on the pump. The pressure gauge reading at this point will mean lower switching threshold. Record this value and find the difference between the upper and lower threshold.

Normally, the cut-in pressure should be 2.7 bar, and the cut-out pressure should be 1.3 bar. Accordingly, the pressure difference is 1.4 bar. If the resulting figure is 1.4 bar, then nothing needs to be changed. At low pressure the unit will often turn on, which will provoke premature wear of its components. When overestimated, the pump will work in a more gentle mode, but the difference in pressure will be obvious: it will be unstable.

Advice! To increase the pressure difference, tighten the nut on the small spring. To reduce the difference, the nut is released.

When checking the operation of the relay, pay attention to How much water flows out of a faucet. If the pressure is weak, then a pressure adjustment will be required. In this case, the pressure in the system should be higher. To raise it, turn off the device and slightly tighten the nut that presses the large pressure switch spring. To reduce the pressure, the nut must be loosened.

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