🚿 Water pressure pump: types, destination, order assembly

To ensure stable operation is possible by setting the aqueduct water pressure switch for the pump. This device allows adjust the parameters of the system operationAnd to increase its service life. To help you make a choice in favor of either option, we suggest to get acquainted with the existing varieties.

Application area

The main purpose of this device is the optimization of the water supply system. Because of its presence, there is a periodic switching on and off the pump. As the controlled parameter the pressure in the system.

Attention! Setting the relays, you will increase the life of water supply service system as a whole.

How to construct and operate relays of various types

The design of such devices may differ. Manufacturers offer mechanical and electronic models with different range of monitored parameters. We offer to get acquainted with the peculiarities of each species and their distinctive features.

mechanical

The plastic body of the device comprises a spring block and contacts, the position of which is controlled by a membrane (thin plate) separating compressed air and water in hydraulic tank. The structure of the spring assembly comprises two elements:

• a small spring, which controls the minimum pressure in the system. To change the value of the controlled parameter uses special screws;
• great spring, which allows to change the maximum pressure value. Adjustment is made by means of a nut.

In operation, the mechanical relayThe membrane, responding to pressure changes in the system, closes and opens the contacts. The larger the value, the greater the bending of the plate. As soon as the maximum threshold is reached, there will be opening of the contact. By reducing the parameter is below the set value, pump again turns to the work.

electronic

Electronic devices are more expensive than mechanical. They are easier to set up and provide higher accuracy control. Their structure includes a flow controller to instantly shut off the pump when the water supply termination. Because of this manages to avoid a "dry run" mode. Most of the models has its own hydraulic reservoir of small volume, which makes it possible to protect the system from water hammer.

Hypersensitivity devices to the presence of impurities in the feed water, can cause their failure. To increase the operating costs to install filtersThrough which the working fluid of the time will be removed all unnecessary.

Advantages and disadvantages of water pressure switch

The main advantages of the device is attributed:

The disadvantage is the complexity of the adjustment of mechanical devices.

Choosing a water pressure switch for the pump: the main criteria

To select a suitable model, it is necessary to focus on a number of criteria. The wrong choice can lead to the fact that the system will not work properly. We offer to find out what to look for when choosing the right model for private homes water system.

by design

To get started is to determine the structural features of the relay. It depends on the desired accuracy. In electronic models varied parameters can be changed in a narrow range. However, compared with mechanical counterparts, they have a higher cost, make high demands on the quality of water and voltage stability in the power supply system.

Tip! If you have purchased an expensive pump, increase its life by opting for an electronic model, instead of mechanical.

It should also be borne in mind that the relay for the pump can be:

• power, via which the switching on and off the pump unit;
• control. Such devices signal supplied to the power control unit, charge pump operation.

Specifications

Pump and accumulator acquired to purchase the relay. In addition, for the selection of the controller, it is necessary to know the operating parameters of the water supply system. In particular:

• the maximum allowable pressure in the system;
• minimum pressure;
• Air pressure in the accumulator chamber.

These two values ​​are linked. The minimum pressure in the system must be higher than those measured in air accumulator chamber of 0.2 atm. Otherwise, the membrane will begin to wear out rapidly.

You should also check the maximum power for which the particular model is designed. It should be correlated with the characteristics of the pump.

by manufacturer

To purchase a quality model whose characteristics are fully consistent with the stated, we advise you to pay attention to the production:

• "Yunipamp". In the catalog of the Russian manufacturer presented high-quality models at a reasonable price. The proposed relay oriented interaction with pumps whose power is less than 1.5 kW. Built-in pressure gauges for easy installation;
• Grundfos. Danish company proposed devices are of high quality. Have a level of protection IP52, which does not limit the place of their installation. Some devices can be operated at a voltage less than 220 V. According to the manufacturer parameters, you can pick up water pressure switch for connection to the pump with a certain capacity;
• Condor. Quality relay from the German manufacturer are universal. The company offers two-pole model. They have a relatively high cost;
• Italtecnica. Italian manufacturer was able to combine high quality and reasonable price. The system pressure can be controlled within 1 - 5 bar;
• «JEELEX ". Quality models with optimum functionality.

Water quality pressure switches offer other manufacturers' Presskontrol "," Akvarobot "," VISTAA 3 "Alco," The Kid "and Espa.

Review of ACR pressure switch PM / 5:

Installation of water pressure switch for the pump

If your water system is still working without a relay, we offer to fix the flaw. All work can be done by hand. We only need to choose the right model and deal with the order of the installation work.

Electrical connection

To connect to the water pressure switch powerShould first carefully study the instructions drawn up by the manufacturer. This will help to find out which wires which terminals should be connected. After that, remove the cover. Terminals, through which water pressure switch is connected to the power supply system, referred to as the «Line».

connection to the pipeline

The connection is made as follows:

Illustration	Description of the action
	Connect the water pressure switch to the pump. For that purpose the terminal designated as a rule, «Motor». Third wire is connected to grounding. Install cover.
	To a nozzle at the rear of the water pressure switch pyativyvodnoy fasten fitting, via which the device is connected to pipeline.
	Connected to the outputs connect fitting line through which water is fed into the house, the hose supplying the water from the pump and accumulator. It is also possible to connect a pressure gauge.

How to adjust

adjustment mechanical pressure switch by means of nuts around the large and small spring arranged inside the housing. Large allows you to set a lower threshold relay. Less - to establish the difference between the minimum and maximum pressure. The settings are made as follows:

• connect the accumulator with the previously exposed to the air pressure;
• to monitor the accuracy of the settings, set the pressure gauge;
• We turn on the pump and wait until the gauge is not the maximum pressure will be recorded;
• We begin to empty, waiting for the relay operates. This point will correspond to a minimum value;
• If the value obtained is required, rotate the large nut, changing the value of the lower level.

Adjustment process in more detail can be seen in the following video:

Anti-idling

If there is a possibility of water off, it is necessary to protect the equipment from idling, which can significantly reduce battery life. Especially when it comes to wet rotor pump is used as the coolant water. Installation relay provides a contact opening in the absence of water, will protect the system from unauthorized operation.

Attention! Reclosing will only be possible if a sufficient amount of water.

For the control of idling can be used:

• Water level value;
• pressure generated at the outlet port;
• flow characteristic passing through the device.

We offer watch the following video to understand the intricacies of the connection protection from idle:

Troubleshooting

In the process, any water pressure switch may malfunction, which in some cases can be solved with their own hands:

malfunction	Electronic model	mechanical relays
The motor does not work	Check your network connection and the availability of power. To do this, open the lid and carefully inspect the device, check the quality of the contacts. Faulty contacts, the other defective components should be replaced.	Check the contacts and ensure their integrity. If a contact group from the accumulated dirt stuck in a certain position, it is necessary to clean the moving parts.
Unstable operation of the pump	Nagar on the contacts. It is necessary to clean them.	Dirt on the membrane and the fitting hole, rust on springs. Clean the movable elements, lubricate and adjust.

Share in the comments, what the water pressure switch is connected to the pump in your water pipe, and why do you prefer this particular model.