Boiler service

During operation, particles of dirt, sand, scale, and rust accumulate inside the boiler. The filters, if installed, could not clean them. This adversely affects the condition of the heating elements, the internal walls of the boiler, as well as temperature control and water quality. If the boiler is heavily polluted, the water heating time and energy consumption increase. Overheating of the heating elements with their further burnout is possible. Therefore, flushing the boiler is necessary. 

For high-quality functioning of the boiler, service cleaning must be performed once a year.

The anode is a magnesium rod that is located inside the boiler tank. When water is heated, oxygen is actively released from it, which can cause corrosion of the tank walls. The anode actively absorbs oxygen released from the water and prevents damage to the tank walls, gradually dissolving. If the anode is allowed to completely dissolve, the boiler tank will rapidly become unusable and may leak.

The anode should be replaced once a year. The cost of the anode is not included in the cost of service and is paid separately.

Boiler tubular heating elements are compelling and consume a lot of electricity, creating a load on electrical connections. With use, connections may loosen. This causes them to heat up and can lead to melting, and even a short circuit. Therefore, when servicing the boiler, it is necessary to check, tighten, and, if necessary, replace the electrical connections to ensure the safe operation of the equipment.

It is also necessary to check the integrity of the insulation of the heating elements, to avoid leakage of electricity to the boiler body. In case of leakage, the heating element must be replaced.

* The cost of heating elements depends on the brand and model of the boiler, and is paid separately.

Boilers are equipped with thermistors (temperature sensors), which are installed in a special dry shaft. They work in conditions of constant temperature fluctuations, from which their position can change and oxidation can occur. This leads to improper regulation of the water temperature and can cause overheating and boiling of the boiler. Therefore, when servicing, it is necessary to revise the sensors and their position in the shaft. If necessary, cleaning is carried out.

Boilers are equipped with several safety elements to prevent accidents:

• an explosion relief valve that releases excess water pressure into the drainage system;
• bimetal thermostat protector, which, in case of critical overheating, cuts off the power supply to the heating element.

Excessive pressure can occur due to heating and expansion of water or its boiling (due to failure of the thermostat and safety thermostat). Therefore, a full check of both units is necessary.

The explosion relief valve must be replaced every 3 years, even if it is visually in a good working condition.

Boiler piping service includes:

• checking the pipes supplying and discharging water from the boiler,
• revision of stopcocks (in case of failure - replacement)
• checking and cleaning the drainage system.