Ventilation
Supply air ventilation installations maintenance. Maintenance of air handling units

Supply air ventilation installations maintenance. Maintenance of air handling units

Air handling unit is the most common and effective method building ventilation systems. Fresh air is supplied to the room by means of a supply system, which purifies it from street pollution, heats or cools it to required temperature.

With the help of an exhaust unit, the exhausted polluted air is removed. Thus, an effective air exchange system is created in the building: the necessary volume of fresh air is constantly supplied to the premises, and the exhaust air is not retained and is quickly removed outside.

The use of a supply and exhaust unit allows you to achieve a balance between incoming and outgoing air. It is important that the performance of the installations is the same. This is necessary so that the pressure outside does not differ from the pressure inside the premises.

If this balance is not achieved in the building, there will be insufficient or excessive pressure. And this, in turn, will negatively affect the well-being of employees and provoke the appearance of drafts.

Regular maintenance of air conditioning equipment contributes to

Savings
The cost of air handling unit owners to use these devices can be significantly lower if the maintenance of the existing air conditioning equipment will become regular. The risk of emergencies will be significantly reduced if at least three to four times a year comprehensive technical inspections used climate system. If we compare the cost of a visit by a specialist who conducts a technical inspection of installations with the cost of repairing failed climate equipment, we will see a tangible difference, and far from being in favor of the latter option. In addition, the service life of a plant that is not regularly maintained is drastically reduced. And the replacement of the air conditioning system in case of its breakdown requires large investments in the dismantling of old equipment and the purchase of new one.

Increasing the capacity of the installation
The power of air conditioning equipment that decreases over time causes malfunctions in the functioning of the climate system. The output or supply of air can be carried out unevenly, which causes the accumulation of carbon dioxide and a lack of oxygen in the room. This affects the well-being of people working in offices: they get headaches, chronic fatigue. However, the quality of the air conditioning systems will be impeccable if comprehensive technical inspections of the installations are carried out in a timely manner, one of the points of the regulations of which is high-quality cleaning of the inside of the ventilation equipment.

Improving the safety of climate systems for human health
Lack of regular maintenance of the air conditioning system leads to a deterioration in the functionality of the equipment. Air filters become dirty, promoting the reproduction and development of bacteria inside the device. From a contaminated plant together with the supply air harmful microorganisms instantly spread throughout the building. Also, through air conditioning systems, flu and cold viruses spread among office workers, developing into epidemics.

Keeping clean and fresh
Over time, debris, grease and dirt accumulate inside the climate control equipment, which can cause unpleasant odors that appear during the operation of the device. With regular cleaning of the interior of the air conditioning system, which is included in the list of maintenance works for installations, the ventilation equipment will have a well-groomed, clean appearance, harmoniously complementing any interior.

Compliance with fire safety rules and regulations
Poplar fluff and leaves get into the external blocks of climate systems, especially in the autumn-summer period, creating a fire hazard. To the regulations complex technical inspection of air conditioning equipment also includes work on cleaning the case of the external unit of the installations, which helps to avoid such accidents.

The list of works carried out during the maintenance of air handling units:

Inspection of the external structure of the installation, including testing the reliability of fences and fasteners.
Monitoring the state of the power supply by phases.
Cleaning the air filters of the exhaust/supply unit.
Inspection of the condition of valve actuators (regulating, shut-off).
Controlling, fixing instrumentation readings, including the state of automation.
Control of vibration isolation supports.
Checking the functionality of the water pump.
Drainage testing.
Checking the installation drive belts.
Inspection of the condition of the heat exchanger.
Inspection of the state of power, control circuits with threaded connections (if necessary).
Control and adjustment of the three-way valve in the water air heater.
Control and adjustment of the three-way valve in the water air cooler.
Lubrication of bearings of installations.
Controlling the alignment of the fan pulleys and the drive pulley of the ventilation equipment, with subsequent adjustment (if necessary).
Perform alignment and cleaning of the impeller.
Testing the position of the belt guard housing in the installation.
Tightening the damping springs in the fan motor.
Testing fasteners for flexibility and strength.
Cleaning the drain with chemical compositions.
Monitoring the condition of steel mesh water filters and cleaning the filters when necessary.
Cleaning the blinds.
Testing the tightness of the air ducts of the device.
Cleaning the heat exchanger of the device by means of chemical compounds.
Cleaning, washing of the internal cavities of the installation.
System duct seal.
Revision of electric motor bearings in fans.
Carrying out an audit of the impeller of exhaust units.
Brief briefing for users on the operation of supply and exhaust ventilation units.

Comprehensive technical inspections of climate equipment are carried out with a certain building code and rules at intervals and depend on the type of room in which the device operates:

For ventilation equipment of restaurants, grocery and flower shops, server rooms, car services maintenance work is carried out monthly.
For the climate systems of business centers, offices, administrative buildings, non-grocery stores and multi-apartment buildings, maintenance work is carried out quarterly.

One-time maintenance cost

Type of equipment	up to 1500 m3/h	up to 5000 m3/h	up to 10000 m3/h	up to 20000 m3/h	up to 40000 m3/h	from 40000 m3/h
Air handling unit	5600	5800	7500	9900	13200	15900

Ventilation maintenance is carried out periodically.

It helps to avoid failures in the system, to prevent possible emergencies.

Maintenance of ventilation systems is an assistant to every entrepreneur in the matter of saving money on building maintenance.

In the process of maintenance, exhaust, supply and supply and exhaust ventilation are inspected externally, fan filters are cleaned, and system operation parameters are measured.

"VentStroyProm" offers to conclude a contract for periodic maintenance of ventilation.

What ventilation and air conditioning systems do we work with:

supply, supply and exhaust and exhaust ventilation systems;
climatic (split systems);
chiller-fan coil systems and separately chillers (cooling units);
air heating and air curtains;
automation responsible for the timely switching on, switching off and switching on, depending on certain conditions.

"VentStroyPom" is always ready to take on the maintenance of the ventilation system at any facility, even the most complex one.

Exhaust ventilation maintenance

The main task of the exhaust ventilation system is to remove the exhaust air in a timely manner, thereby maintaining a good indoor climate.

Exhaust ventilation maintenance helps to make sure that the unit is operating at the desired capacity, air ducts and ventilation shafts and ducts are not clogged with debris.

In the order of scheduled maintenance of exhaust ventilation, the following are carried out:

external inspection of ventilation system devices;
cleaning ventilation grilles blinds;
checking fasteners, supports;
cleaning the blades of exhaust fans from dirt, centering the impeller;
checking voltage, electrical circuits of exhaust equipment.

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Supply ventilation maintenance

Forced ventilation provides forced air flow.

It is injected into the system under pressure, passing through the filters.

Sometimes the supply air is heated to maintain the optimum indoor temperature.

Periodic maintenance of the supply ventilation maintains its performance at the desired level.

During maintenance, the operation of the supply fans is checked, filters are cleaned or replaced.

There is a control of the operation of the supply ventilation system in the context of taking temperature and humidity indicators.

The speed of air movement is measured.

In supply fans, the presence of lubrication is checked.

Bearings and drive belts are checked.

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State Unitary Enterprise Moscow Property

air conditioning and ventilation

The objectives and subject of the Company's activities are: the fulfillment of tasks for the efficient use of movable and immovable property, property complexes owned by the city of Moscow, assigned to the Company on the right of economic management, performance of work and provision of services, including for the implementation of urban socio-economic orders and programs, meeting public needs and making a profit.