The high-pressure pipe refers to the pipeline between the compressor and the condenser, the condenser to the liquid storage tank, and the liquid storage tank to the expansion valve. The low-pressure pipe refers to the pipe between the expansion valve and the evaporator, and the evaporator to the compressor. road.
The method of distinguishing high and low pressure pipes of automobile air conditioners:
1. The thickness of the pipe.
The air conditioner of the car has a thick tube and a thin tube. Generally, the thick tube is a low-pressure tube. The thin tube is a high pressure tube.
2. Compare the temperature.
Hands feel cooler when the low-pressure pipe is running. The high-pressure pipe is hot and hot when running.
Air conditioner maintenance during general hours:
1. Remove debris from the vents to ensure proper ventilation. Check whether the outdoor rack is loose, and clean the outdoor ventilation net to see if there are any foreign objects. Also, keep the vents clear and unobstructed.
2. Clean the surface of indoor and outdoor heat exchangers to improve the efficiency of heat exchangers. When cleaning the indoor heat exchanger, carefully remove the panel, scrub it with a soft rag, and use a small brush to gently scrub the heat exchanger of the indoor unit, so as to remove dust and harmful accumulations that can breed germs. But note that since the heat sink is a very thin aluminum material, it is easy to deform after being stressed, so be careful v brushing.
3. Clean the dust accumulated on the filter. When cleaning the filter screen, first cut off the power supply, then open the air intake grill; take out the filter screen, clean the filter screen with water or a vacuum cleaner, the water temperature should not exceed 40 degrees, clean it with a hot wet cloth or neutral detergent, and then wipe it with a dry cloth clean, and do not use insecticides or other chemical detergents to clean the filter screen.
4. Clean out the dirt and buildup from the drain section. The drainage part is easy to deposit dirt, so it must be thoroughly disinfected regularly to ensure smooth drainage and prevent bacteria from multiplying.
5. Check other. Including power supply lines, plug boards, switches; check the condition of consumable parts, such as wind deflector plate, sterilization and dehumidification, photocatalyst and other components, to ensure that the air conditioner is in good condition and there is no abnormality.