Usually, the central air-conditioning we refer to refers to the air-conditioning system composed of central air-conditioning mainframe, cooling tower, air-conditioning water pipes, air ducts and air-conditioning terminal equipment.

Second, the harm of not cleaning the air conditioner

1, breeding bacteria and infectious diseases: Because the air duct forms a relatively closed space with the room through the air outlet and the air return outlet, the dust (generally invisible to the naked eye) and germs in the air duct will blow to every corner of the room with the air conditioning wind and gradually become indoor air pollution sources; At the same time, the germs in one room can easily cross-infect other rooms with the circulating air of the air conditioner.

2. Dust accumulation in the air duct: it will lead to the increase of wind resistance, energy loss, and the cooling and heating effect of air conditioning will decrease.

3. The thicker the dust on the inner surface of the air duct, the greater the air supply resistance, which will increase the fan load, reduce the unit capacity, shorten the service life of the equipment and increase energy consumption.

4. Mould, fungus and bacteria: All kinds of microorganisms and volatile organic compounds will pollute indoor air and induce dizziness, allergic rhinitis, migraine and other diseases.

Three, the central air conditioning water system scaling corrosion hazards

1, scaling will reduce the heat exchange efficiency of heat exchange tubes, lead to poor air conditioning effect and increase energy consumption. Every time the scale of heat exchange tube increases 1mm, the refrigeration capacity decreases by 20 ~ 40%, and the energy consumption of air conditioner increases 15 ~ 30%.

2. Impurities such as scale, rust residue and algae will block the filter and heat exchange tube, resulting in invalid air conditioning and even pump tripping and shutdown. Attached to the inner surface of equipment and pipelines, it hinders the flow of water and heat exchange, consumes a lot of electricity and causes high-voltage operation.

3. The inner walls of the system pipes and heat exchange tubes are corroded or even perforated, which shortens the service life and increases the operation and maintenance cost. According to the investigation of relevant institutions, the service life of untreated equipment is shortened by 30-50%. 4. Fungal reproduction causes diseases (especially "Legionella"), which produces mucus and causes corrosion under scale and microbial corrosion. Fourth, the host cleaning

The purpose of cleaning the main engine is to increase the heat exchange rate; Reduce host load and energy consumption; Prevent corrosion and prolong the service life of equipment. Host cleaning mode:

1. physical cleaning: a cleaning method for cleaning the circulating water system or its equipment by physical or mechanical methods. The common physical cleaning method is ignition of the main engine, that is, tools such as punch, rubber plug, nylon brush or round steel are passed through the heat exchange tube by compressed air or manually to remove deposits or blockages in the tube.

2. Chemical cleaning: A cleaning method that makes the deposits in the equipment to be cleaned dissolve, loosen, fall off or peel off through the action of chemical agents. Commonly used chemical cleaning methods include acid cleaning, alkali cleaning, complexing agent cleaning, sterilization cleaning and so on. Chemical cleaning is usually used to remove hard dirt from equipment and pipelines and deposits at bends and joints.

3, the host gun cleaning:

The inner wall of copper tube should be free of oxide scale and impurities. Pay attention to the anti-rust measures of bolts to avoid water leakage during pressure test.

Cleaning of air-cooled main engine: adjust the water gun of the cleaning machine to the water column, and after cleaning all parts of the air-cooled main engine once, spray it evenly on the condenser fins with professional fin cleaning agent and wait for its reaction. After foaming, rinse with a water gun until there is no residue, and dry.

Air conditioning maintenance free consultation hotline: 400-017-110.

Verb (abbreviation of verb) Cleaning and maintenance of terminal equipment fan coil unit/air cabinet Cleaning process:

1, dust cloth is used for site protection; Turn on the power supply and check whether the fan coil unit works normally.

2. Remove the fan coil reflux box (if any) and the filter screen with tools.

3. Remove the motor and turbine.

4. Clean the dirt on the surface of the filter screen and the air return box.

5. Clean the dirt on the motor surface and turbine blades.

6. Spray the fin cleaner on the surface cooler for reaction.

7. The cleaning agent reacts with the fins fully to foam, and after the dirt in the fins is completely decomposed, clean the fins of the surface cooler group with a portable professional cleaning machine.

8. Clean the condensate pan and dredge the condensate pipe. If the water pipe is blocked, remove the water gun of the portable professional cleaning machine and dredge it with the water pipe of the cleaning machine.

9. Install motor, turbine, bellows and filter; Remove the air return port and scrub it clean; Clean the return air filter. Install air return port and air return port filter; Clean the air supply outlet;

Air-conditioning maintenance free hot 400-017-11/kloc-0.