Countercurrent for a swimming pool is a great solution!
In order to get the most out of your time in the water and not just swim in the pool, a variety of water attractions are used. One of the most common and accessible of these is, of course, the counter-current mentioned above. It is also known as a 'reverse current' or 'artificial wave'. If the pool is small and a person wants to swim well, but not in circles from wall to wall, but simply in a straight line, then it is recommended to install a counter-current in the pool.
The countercurrent is a powerful pump with a high capacity (40-80 m3/h) and a front part with a control panel. It can not only perform the function of a counterflow, but can also be a good hydromassage. Countercurrents can be made of plastic, bronze or stainless steel. They can be installed in any type of pool - concrete with mosaic, lined, fibreglass, polypropylene.
With counter-current you can swim like a pro even in a small pool!
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Buying a counterflow for your pool is not the end of the story. You also need to install it correctly.
Firstly, before pouring concrete and installing the formwork for the counterflow embedded section, it is necessary to prepare a box and install it in a reinforced frame. The size of the box is usually 300x400 mm and the depth is equal to the thickness of the wall (25 cm for a standard wall). The upper part of the box must be 20 cm below the planned zero point of the side. The distance from the counterflow to the nearest side wall must be at least 150 cm.
The counterflow is installed after the bowl has been plastered, taking into account the following conditions:
— the feed nozzle is placed at a depth of 200-250 mm from the water surface,
— the mortgage cannot touch the reinforced frame,
— in pools with overflow, the embedded part is only installed at an angle of 45 degrees and only rigid pipes may be used,
— when installing a countercurrent system in a technical room, it is necessary to raise the air pipes above the water level where possible.
The counterflow itself is installed in a technical pit, together with the pump. Shut-off valves are always installed directly on the embedded element. The motor is then connected to these valves by means of special pipes which reduce the vibration of the pump during operation and especially during start-up. The pump itself is mounted on a special bracket fixed to the pit wall. In some cases, it is possible to install the pump on a specially cast pedestal, similar to those used to install filter pumps. If it is not possible to install the pump next to the embedded element, it can be extended from the embedded element at a maximum distance of 500 centimetres. In this case, right angles cannot be used when connecting the pump.
The pump is powered by a special control unit containing a pneumatic converter, a contactor and thermal protection for the pump motor. The pump is switched on by means of a pneumatic button mounted on the front panel. It should also be remembered that the pneumatic tube cannot be made shorter than 500 centimetres from the pneumatic button. The maximum permissible distance from the pneumatic pushbutton to the pneumatic converter should be up to 25 m.
For a high quality installation and operation of countercurrent equipment, a technical pit is required with the following characteristics:
— Minimum length size up to 800 mm, width up to 500 mm.
— Height below water level — up to 750 mm.
— Ventilation and drainage are required in the pit.
The power supply must be provided by a five-core cable with a cross-section of 1.5 mm2. Before starting the counterflow, it is necessary to adjust the thermal protection regulator in the control panel and set it to the position corresponding to the given motor (e.g. for a typical 2.6 kW motor this is usually 6-7A). When changing the length of the pneumatic hose for counterflow control, it is necessary to adjust the sensitivity of the pneumatic converter.
In recent years, instead of pneumatic buttons and pneumatic converters, some manufacturers have used so-called "touch buttons". These use an optical pair — a light-emitting diode and a photocell. When you place your finger on the button, the light emitted by the LED is reflected and hits the photocell, which gives the command to switch on the pump. However, sometimes the counterflow can switch itself on if there is too much light or if the power goes out. The best way to choose and buy a countercurrent for a pool is to consult professionals. Contact us and we will be happy to help you.