Maintenance method of air conditioner

Air conditioning maintenance is divided into several daily maintenance. Correct maintenance is conducive to prolonging the service life of air conditioners and reducing maintenance costs. Therefore, the following routine maintenance work must be carried out regularly. Here are some carefully organized air conditioning maintenance methods. I hope it helps you. Welcome to check.

Maintenance method of air conditioner

1, every summer, electricians should conduct a comprehensive inspection of the electrical wiring of air conditioners to ensure the safe use of air conditioners.

2. After the air conditioner is used for half a year, the installation status of the indoor unit and the outdoor unit should be checked to ensure that the air conditioner is firm and reliable.

3. When the air conditioner is put into use again, both the indoor unit and the outdoor unit should be dusted once.

4. The heat preservation and moisture retention materials on the connecting pipes of indoor and outdoor machines are easy to age after a long time, and the heat preservation performance decreases, so new heat preservation materials should be replaced.

5. The air conditioner can only start the compressor after installing the air filter. Otherwise, poor dust removal will not only affect the refrigeration effect, but also be harmful to human health. The filter screen should be removed and cleaned every 2 ~ 3 weeks.

6. Always wipe the outer surface of air conditioner with a clean soft cloth to keep the surface clean and bright. It is forbidden to directly flush the outside of the air conditioner with water or scrub it with kerosene and gasoline.

7. Don't adjust the indoor temperature too low, and generally adjust it within the range of 5 ~ 7℃ according to the indoor and outdoor temperature difference.

8. Don't open the doors and windows of the air conditioner when cooling, so as to avoid direct sunlight on the indoor unit and stabilize the indoor temperature.

9. Always check whether the air inlet and air outlet of the outdoor unit are blocked to ensure smooth ventilation of the outdoor unit.

Common fire causes of air conditioning

According to their functions, air conditioners can be divided into two types: electric prototype and electric heating. One can only be used for cooling, and the other can be used for heating and cooling. Air conditioning is mainly composed of three parts: first, the refrigeration cycle system uses a motor to drive the compressor; Second, the ventilation circulation system includes fan motor, centrifugal fan and exhaust fan; The third is the electrical control system. The main causes of air conditioning fire are:

1, the installation does not meet the requirements.

1 The power cord is in poor contact with the motor and other connectors, and combustible materials such as plastic casing of air conditioner are overheated and ignited; 2. The cross-sectional area of the selected conductor is too small, which leads to overload and fire; 3. The capacity of the selected plug is too small and the withstand voltage is low, which leads to breakdown and short circuit fire; 4. The fuse doesn't match the capacity of the air conditioner, so it can't be blown quickly in case of failure. 5 Connect the wrong power supply and catch fire. For example, window air conditioners usually use a single-phase 220-volt power supply, and the power plug is a single-phase three-wire plug, which is mistaken for a 380-volt three-phase power supply and fires by mistake; 6 Improper installation position. The air conditioner is installed on combustible components, too close to curtains, wood structures and other objects, or installed in wet parts without moisture-proof and rain-proof treatment, or the shielding area is not enough. In summer, the condenser of air conditioner is exposed to sunlight for a long time, and the temperature is as high as 40℃ at noon, which makes the air conditioner run continuously for several hours, the compressor is overheated, and the overload protector acts frequently, burning out the compressor or catching fire.

2. The fan of electric air conditioner stops running. There are two reasons why the fan stops running: one is the failure of the air conditioner itself, such as the bearing wear leading to the deflection of the fan blades and the jamming of the shell, which leads to the fan stopping running; Secondly, the fan and electric heating tube are controlled by different switches, and the power supply of the electric heating part is not cut off when the air conditioner is turned off. If the fan stops running, a large amount of heat will accumulate and the temperature will continue to rise, which can ignite combustible materials near the electric heating tube.

3. The high-temperature spark generated when the oil-immersed capacitor breaks down ignites the inner container of the machine and the shell of the separator. The reasons for capacitor breakdown are: first, the power supply voltage is too high; Second, the leakage caused by moisture leads to poor capacitor quality. After being wetted, the insulation performance decreases and the leakage current increases, leading to breakdown.

4, caused by improper use

1 The user did not operate the electric air conditioner according to the instructions. After the user stopped heating, the ventilation device was not used to cool the electric heating part. Because the heating wire has strong thermal inertia, if the electric heating part of the air conditioner is not cooled by a fan after the power is cut off, the electric heating part will still maintain a high temperature for a long time, baking the surrounding combustible materials, which will lead to decomposition, carbonization and fire for a long time.

Start the air conditioner as soon as it stops. In a short time after the air conditioner stops, the pressure difference between the inlet and exhaust sides of the compressor is relatively large, so before starting, the high and low pressure sides should be balanced by capillary tubes, otherwise the compressor load will probably increase and the current will increase sharply, which will lead to the motor burning.

5, the power supply voltage is too low

The power supply voltage is too low to make the air conditioner and fan motor rotate too slowly to dissipate heat, and the temperature is too high to ignite the separator and gasket or the motor overheating coil for short circuit and fire.

Second, the air conditioning fire prevention measures

1. Choose an air-conditioning brand with good quality and good reputation.

2. Please ask professional air conditioner installers to install air conditioners, and choose wires, plugs and fuses that match the air conditioners.

3. Don't install the air conditioner too close to the curtain, or use flame retardant fabric for curtain cloth.

4. When using the electric air conditioner, after the user stops heating, first cool the electric heating part with the ventilation gear, and then turn it off after 2 minutes.

Five principles of air conditioning maintenance

A, the secret method of switch

Don't switch the air conditioner frequently. Don't turn on and off the air conditioner frequently because the room temperature has reached or exceeded the required value, but let the air conditioner be controlled by the thermostat. When the air conditioner is not in use, turn off the power and unplug it. No matter what causes the air conditioner to shut down (such as sudden power failure, artificial shutdown, etc.). ), because there is no delay device for shutdown (the delay time is about 3 minutes), this air conditioner can be turned on immediately after shutdown, but it will run for 3 minutes. However, the air conditioner without delay cannot be turned on immediately after being turned off, and it must be turned on for about 3 minutes, otherwise the starting current may be too large, which may burn out the fuse or even the compressor motor. Pay special attention to the effective use of timers. When sleeping and going out, please use the timer and run it only during the necessary time to save electricity.

Second, the secret method of temperature

When the air conditioner is running, attention should be paid to carefully adjusting the temperature to avoid overheating or supercooling. If the heating temperature is 2℃ lower, it can save electricity by about 10%. Try to open as few doors and windows as possible when the air conditioner is running. Frequent opening and closing of doors and windows will reduce the cooling and heating effect of air conditioners and waste electricity. The windows of air-conditioned rooms should be covered with curtains. In winter, sunlight enters the room during the day, and curtains are used at night to prevent heat loss. Especially in summer, air conditioning can save about 5% electricity by blocking direct sunlight. In addition, a well-insulated house saves the most electricity. Therefore, it is recommended to use thermal insulation materials when building, adding or decorating houses.

Third, the filter screen secret method

Among all household appliances, the dust pollution of air conditioner is the most serious, and the cleaning of air conditioner is also the most easily overlooked thing. Some users use the air conditioner for many years after installing it, and don't clean it until it breaks down. Due to the lack of cleaning and maintenance, quite a few air conditioners sent for repair are damaged prematurely. Therefore, air conditioners generally need to be cleaned and maintained before use in summer or after use in autumn. Especially the maintenance of filter screen. In recent years, the fresh air quality of air conditioning has been greatly improved due to the adoption of long-term deodorizing air conditioning filter. When cleaning this kind of air filter, be careful not to touch the metal part of the indoor unit when disassembling, because it may be scratched. After removing the air filter, gently bounce it or use an electric vacuum cleaner to clean it. If the filter screen has too much scale, it can be cleaned with water or neutral detergent, but hot water above 50℃ cannot be used to avoid deformation. Do not use sponge to clean, otherwise it will damage the surface of the filter screen. Rinse with clear water, and then air dry in the shade. Never expose or dry in the sun, because it may cause deformation. Put the air-dried air filter back to the original position of the air conditioner, and the whole maintenance process is completed. Air filters are consumables and should be replaced about every four months. If the filter screen is blocked, the filtering capacity will be reduced and the air circulation will be reduced, thus reducing the cooling and heating effect.

Fourth, the secret method of components.

In daily air conditioning operation, attention should be paid to protecting the heat sink of condenser and evaporator. The heat sink of condenser and evaporator is made of 0. 15mm aluminum sheet inserted into copper tube and expanded, which can't stand collision. If the heat sink is damaged, it will affect the cooling effect of the air conditioner and reduce the cooling efficiency. In addition, we must protect the refrigeration system. If the components or connecting pipes of the refrigeration system are damaged, the refrigerant will leak and the air conditioner will not be able to cool. Every six months, the outdoor cooler should be cleaned with a long brush. Dismantle the movement every year and inject proper amount of lubricating oil into the bearing of the fan motor. The refrigeration system does not need to be treated, just remove the dirt on the surface. Use water-cooled air conditioner, and don't turn off the water supply when the refrigeration system is working. For air-cooled condensers installed outdoors, dust should be removed once every 1-2 months. When stopping in winter, the water in the water-cooled condenser should be drained to prevent frost cracking. Also, the air conditioner should choose the fuse correctly. Select the fuse specification according to the rated current indicated in the product manual. If it is too big, it is not safe. Too small often breaks down.

Five, taming the wind solution

Don't block the air outlet of the outdoor unit. When things are placed in the outdoor air outlet for shelter, the cooling and heating effect is reduced and electricity is wasted. Be good at using wind direction to adjust. When heating, the air guide plate is downward, and when cooling, the air guide plate is horizontal, and the effect is better. Tip: Air-conditioned rooms are generally dry. If people stay for a long time, they will feel dry throat and thirst, and human skin will also be affected by the imbalance of pH. The prevention method is to pay attention to the water supplement inside and outside the body. Air conditioning fans can save more electricity when used together. In the hot summer, the temperature remains high, but the electricity bill will rise. How can I save electricity and enjoy the cool? Consumers have come up with the method of air conditioning distribution fan, and experts have also affirmed it.

What are the benefits of air conditioning maintenance?

1, Prevention of air-conditioning diseases

People who work and live in an air-conditioned environment for a long time will feel stuffy and dizzy because the air is not circulating and the environment is not improved. Sneezing, tinnitus, fatigue, memory loss and other symptoms. It may even lead to symptoms related to skin allergy characteristics, such as tight and dry skin, skin allergy, poor skin and so on. This phenomenon is called "air conditioning syndrome" or "air conditioning disease" in modern medicine.

2. Extend the service life of the air conditioner.

After the air conditioner is used for a period of time, due to the repeated circulation of static electricity and air, a large amount of dust and dirt accumulate on the surfaces of filter plates, radiators and evaporator fins, resulting in airflow blockage, which leads to the decline of refrigeration and heating effect. Increase power consumption and noise, even seriously damage the compressor and increase the failure rate. Reduce the service life of air conditioners. But also produce peculiar smell, breed bacteria, mites, etc., and endanger people's health.

3. Save power resources

During the repeated operation of the air conditioner for countless times, a large amount of dust and liquid smoke mixed in the air will wrap the fins layer by layer, which will seriously block the tiny gaps between the fins and affect the heat dissipation of the fins, thus leading to the increase of condenser pressure, the increase of compressor motor current, the doubling of operation time and the significant increase of power consumption. (When the heat sink is in a clean state, the heat dissipation is good, the room temperature drops rapidly to the set temperature, and the compressor automatically stops working; According to the experimental results, when the dirt on the heat sink reaches the thickness of 0.30 mm, the working time of the compressor will double and the power consumption of the air conditioner will increase by about 2.4 times. For example, before cleaning a room, it takes more than ten minutes to drop to the set temperature; It only takes seven minutes to cool to the set temperature after cleaning, so the compressor can work for three minutes less, thus saving 30% electricity. At present, the current situation in China is that a large number of air conditioners have poor refrigeration effect, even extend the compression time and waste electricity. Through cleaning, the air conditioner can restore the normal refrigeration effect, shorten the compression time and save electricity 10-30%.

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