Cleaning of ventilation systems from alex's blog

During operation, dust and grease deposits accumulate in the air ducts and equipment of ventilation systems, which makes it difficult to maintain the specified air parameters. Contaminated air ducts of ventilation and air conditioning systems create the possibility of fires. Therefore, chimney sweep cleaning is a must.  Dust and grease deposits accumulated in ventilation equipment and air ducts easily ignite, and with the movement of air inside the air ducts, the fire quickly spreads throughout the building.

If the ventilation system, in addition to transporting air, is designed to heat, cool and humidify it, then the accumulated dust deposits create favorable conditions for the growth of mites, bacteria, fungi and other microorganisms that are dangerous to humans. Over time, microorganisms can break away from the surface of the air ducts and be carried by the air flow into the serviced premises. Diseases such as allergies, flu, and SARS can be transmitted through ventilation from an infected person to a healthy one.

Surveys are conducted  using multimeters (flow, temperature, humidity, dust concentrations by particle fractions), noise meters and video equipment, in order to determine the condition of vertical and horizontal channels, the reasons for ineffective ventilation, and to control the quality of cleaning of ventilation channels.

The methods of the work performed are based on the standards . During the inspection, a high-sensitivity video camera mounted on a self-propelled minitractor is used. The image is sent to the monitor, which allows for prompt assessment of the condition of the air ducts, as well as recording the areas being inspected on a video cassette.

After cleaning, repeated video diagnostics of air ducts is carried out, the record is attached to the work protocol. Based on the results of the examination, a report on the conducted studies and the examination protocol are compiled. If necessary, recommendations are given for the creation of air purification systems in supply and exhaust ventilation systems and for solving technological problems.

After determining the degree of contamination of vertical and horizontal channels, a work plan is drawn up with a list of the equipment used. Cleaning of the supply and exhaust unit of the ventilation system, as well as its individual components, is carried out using compressed air and highly efficient industrial vacuum cleaners.

Cleaning of air ducts is carried out by HVAC cleaning services mechanically and chemically. Cleaning equipment consists of a wide range of installations and tools for solving specific problems:

• - installation with pneumatic drive and turbine for brush rotation,
• - electromechanical cleaning plant,
• - installation of chemical treatment of air ducts,
• - high pressure vacuum and injection unit,
• - filtration unit, etc.

This method of cleaning ventilation ducts is effective and safe. It allows cleaning air ducts without dismantling and not polluting the premises, due to the use of highly efficient filtering units.

Contaminated ventilation and air conditioning systems create the possibility of fires. Dust and grease deposits accumulated in ventilation equipment and air ducts easily ignite, and with the movement of air inside the air ducts, the fire quickly spreads throughout the building.

The most dangerous, from the point of view of fire occurrence, are the air ducts of exhaust systems from the equipment of restaurant, cafe, etc. kitchens. Often the cause of fire is untimely cleaning of kitchen hoods and air ducts from fat deposits accumulated in them.

Many national cuisines have dishes that are cooked in a "live" fire. During the preparation of such dishes, the flame can easily spread from the dish in which the dish is cooked to the grease traps of the kitchen hood and move inside the ventilation system to other rooms. Removing grease from the air duct located behind the kitchen hood is quite a labor-intensive job, so the air duct often remains unserviced.

Every building that has an exhaust system above kitchen equipment has a potential fire risk.