Batteries are designed to heat the living space in modern houses and apartments. Before each heating season, the systems are checked and cleaned, sometimes the batteries need to be repaired. Upon the arrival of cold weather, residents may find that for some reason certain elements heat only weakly or do not heat at all. This happens, for the most part, due to the formation of air locks in the cavities of the batteries. To make the problem go away, it is often enough to blow out the heating radiator.
Before you start to remove the malfunction, you need to make sure that it is the airlock that is causing the insufficient heat generation. A clear sign of this will be a distinct gurgle, despite the fact that water flows freely into the heating system.
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Work methods
Removal of plugs from heating radiators is carried out according to the following scheme:
- Opening the thermostat control valve, if present. Sometimes this action is able to immediately restore normal temperature control.
- If there is no thermostat, you will have to unscrew the Mayevsky tap - this is a valve located on a special valve.
- With a special key, you need to slightly unscrew the valve until you hear a hiss. Thus, air is released from the system.
You need to bleed the air gradually, several times in small portions. When the air is completely out of the batteries, water will flow from the tap. By stabilizing the pressure in the batteries and making sure that the hiss is gone, the worker can put the valve back in place.
Removing limescale in batteries
With hot water, scale and foreign particles almost always get into the pipes. Just 1 mm of such deposits reduces the heat transfer coefficient by 15%. Therefore, experts without fail recommend blowing out the batteries at the beginning of each heating season.
If it is the appearance of scale that is to blame for the loss of the desired temperature in the house, this will be evidenced by a higher temperature of the riser compared to batteries. Also, in that case, you can feel the uneven heating of the radiator sections and each of its parts separately.
Hydraulic cleaning of radiators
This method of blowing out the batteries is most effective, although it is quite expensive. But with the help of hydraulics, pipes and heating sections will completely get rid of all scale and other plaque.
A specialist with special equipment launches the working mixture into the riser located in the apartment. The process is carried out under high pressure, so it is better to substitute deep dishes at the exit so as not to flood and not to dirty the room too much. Plumbers use a powerful compressor to provide the correct pressure in the duct to be cleaned. This method removes all scale deposits from the walls inside the batteries, freeing up space for the unhindered circulation of hot water.
According to many years of practice, hydraulic blowing is the best and most effective method for cleaning cast iron batteries. When it is impossible to implement work in the apartment, there remains the option of handing over the radiator to the service department. You can take a clogged battery for cleaning to a service housing organization, to a plumbing store, if they have a service center.
