How to add refrigerant to car air conditioner? How do you add refrigerant to an air conditioner?

Start to test the pressure on the car: first rotate the thimble in the end of the bottle opener of the refill tube counterclockwise to the very top, screw the refrigerant bottle into the bottle opener, and tighten it. Find the low-voltage interface, generally there is a small blue or black hat at the left end of the engine, and there is an L on the top of the hat, and the small hat is screwed down.

Start the car engine and turn on the AC switch of the air conditioner, turn on the blower to the maximum, wait for three minutes, and then connect the DIY pipe interface to the low pressure end of the car air conditioner. After the DIY tube is connected to the low-pressure interface, the DIY tube pressure gauge will have a scale indication instantly. At this time, the DIY pipe is connected with the air conditioning system, look at the pressure scale on the pressure gauge, you can know the pressure in the system, under what pressure to fill it?

At this time, there is a knowledge note! The pressure in an automotive air conditioning system changes according to the change in the temperature of the outside environment. In the figure below, the Fahrenheit temperature and the air conditioning system pressure are compared to confirm that the pressure in the system is high and low, and if the system pressure is high, it means that the refrigerant in the system is more than normal, otherwise the refrigerant should be supplemented.

If the outside temperature is 30 degrees, the pressure in the air conditioning system should be around 45 psi, and less than 45 psi should be supplemented with refrigerant. (Fahrenheit is a commonly used unit of temperature in the United States, thank you!) Ambient temperature (Fahrenheit).

The pressure of the low-pressure gauge is 65 degrees Fahrenheit, which corresponds to degrees Celsius.

System pressure 25-35 psi Fahrenheit 70 corresponds to Celsius system pressure 35-40 psi Fahrenheit 75 corresponds to Celsius system pressure 35-40 psi Fahrenheit 80 corresponds to Celsius system pressure 40-50 psi Fahrenheit 85 corresponds to Celsius system pressure 45-55 psi Fahrenheit 90 corresponds to Celsius system pressure 45-55 psi Fahrenheit 95 corresponds to 35 degrees Celsius System pressure 50-55 psi Fahrenheit 100 corresponds to 50-55 psi Celsius system pressure 105 Fahrenheit corresponds to a system pressure of 50-55 psi at degrees Celsius 110 corresponds to a system pressure of 50-55 psi Celsius If the pressure in the air conditioning system is too low in the above figure, refrigerant needs to be replenished. (Note: If you have an air release valve at the end of your refill tube opener, you need to unscrew the cap on the air release valve, and use the cap to gently press and release the valve center in the air release valve, remember to press and release lightly!)

At this point, the air inside the replenishment tube is sprayed out. Never get the exhaled gas into your eyes and mouth. Remember!

Proceed to the next step after tightening the vent valve cap. Thank you! Rotate the thimble in the bottle opener clockwise, pierce the mouth of the refrigerant bottle, the thimble in the bottle opener immediately rotate counterclockwise to the top, reverse the refrigerant bottle up and down, gently shake the refrigerant bottle, the refrigerant liquid will flow into the system, and at the same time look at the pressure gauge scale, and the temperature and pressure psi unit in the above figure can be one to.

When you observe that the pressure gauge scale is normal, immediately rotate the thimble in the corkscrew clockwise to the lowest end and tighten it to move the low-port connector of the air conditioning system. If one bottle is not enough, please add the second bottle of refrigerant as described above until the outside temperature and system pressure are the same. At this time, the refrigerant replenishment of the car air conditioning system is completed, please tighten the small L-shaped hat.

1. When adding, first add from the high-pressure pipeline, and then add from the low-pressure pipeline, the compressor cannot run when adding from the high-pressure pipeline, and the air-conditioning system must be at the maximum load when adding from the low-pressure pipeline;

2. When looking at the meter, you can see which pressure gauge is added from which pipeline, the low pressure is generally above MPa, and the high pressure is generally above MWPA;

3. When adding, two to three cans are generally added, and the capacity of each can is 300 grams.

4. You can't add more or less, depending on the specific model instruction manual, the pressure will be greater if you add more, and the refrigeration effect is not good if you add less.

The method of adding refrigeration to the air conditioner is as follows: take out the filter screen - open the nut - connect the equipment - adjust the pressure - remove the device.

The specific steps are as follows:

Turn on the air conditioner and turn it to cooling. Open the indoor unit panel and remove the filter.

Open the small nut of the outer machine and connect the pipe triangle valve.

Connect it with a refrigerant hose (use a fluorine-filled hose to connect the refrigerant cylinder, repair table, and fluoride-filled port to remove the air from the hose).

Adjust the pressure of the refrigerant to start the machine.

After adding, you can screw on the nut.

Generally speaking, the air conditioner should be adjusted to refrigeration, and then work normally at the outside unit, observe this time the indoor panel to remove the filter, and find that part of the evaporator frost or record is actually due to insufficient cold refrigeration, at this time you can open the outdoor unit to connect the small nut of the pipe triangle valve, that is to say, his place should be in the lower right corner of the air conditioner, there is an inner hexagon screw on the side of the large and small pipes on its side, which is the first level of the air conditioner. At this time, first remove the air in the hose, and the pressure planted by his family should be in Pa, and the nut can be screwed on after adding.

Use a special filling pipe and a three-way valve to connect the three-way joint of the low-pressure pipe, first drain the air in the pipe, turn on the air conditioner, slowly fill the refrigerant from the three-way joint of the low-pressure pipe, touch the low-pressure pipe and start to cool, stop filling after condensation, run for 10-20 minutes, observe that the low-pressure pipe always maintains the condensation state, and remove the filling device to complete.

Precautions for car air conditioner and refrigerant:

1.A car air conditioner DIY filling supplement tube.

2.A bottle of R134A refrigerant 250 grams is fine.

3.Now let's start to test the pressure on the car: first rotate the thimble in the end of the DIY refill bottle opener counterclockwise to the very top, screw the refrigerant bottle into the bottle opener, and screw it tight.

4.To find the low-voltage interface, there is generally a small blue or black hat on the left end of the hood, and there is an L on the top of the hat, and the small hat is screwed down.

The special filling pipe and three-way valve for automobile air conditioning are connected to the three-way joint of the low-pressure pipe, the air in the pipe is drained first, the air conditioner is turned on, the refrigerant is slowly filled from the three-way joint of the low-pressure pipe, the low-pressure pipe begins to cool down when touched, the filling is stopped after condensation, and the operation is 10-20 minutes, and the low-pressure pipe is always kept in a condensation state, and the filling device is removed.

The specific steps of car air conditioning and refrigeration are as follows:

1. High-pressure pressure leak detection (250psi 20kg cm2), pay attention to the low-pressure gauge should not be connected to the low-pressure pipe to prevent the low-pressure gauge from being damaged during pressure;

2. Confirm that there is no leakage and low-pressure pumping, observe the pointer of the watch again for ten minutes or more after evacuation, and pay attention to whether it will be **, such as when the low-pressure gauge needle remains still, properly fill the refrigerant oil (30ml-50ml low-pressure inhalation), and then you can add 134A environmentally friendly refrigerant;

3. Before filling the refrigerant, please connect the low-pressure high-pressure gauge with the pipeline, and then fill the refrigerant, at this time, you should pay attention to the high pressure and low pressure, the normal pressure is, high pressure (150--200psi or 12--15kg cm2), low pressure (25--40psi or 2--3kg cm2).

Photo by Brother Choosing a Car) @2019

Cars are already a must-have tool for everyone to get around. Of course, automotive knowledge is essential. In order to facilitate everyone to understand this knowledge, today Bian Xiao will introduce to you what is the method of adding snow to the car air conditioner.

If you are interested, it may be helpful to you. Connect the snow gauge to the air conditioning system (the high and low pressure pipes are basically connected), vacuum, and select low pressure vacuuming (turn the switch corresponding to the low pressure gauge counterclockwise, indicating that the switch of the high pressure gauge should be turned off). Most vacuum pumps do not need to look at the negative pressure value, and only need 3 minutes to evacuate.

When the time is up, tighten the switch of the low-pressure gauge, and you can connect the refrigerant tank for filling. Before adding snow seeds, they need to be pressurized with a pressurized vacuum machine to detect leaks. If there is a leak, then it is the air conditioning pipe joints, as well as a series of accessories of the air conditioning system, such as condensers, evaporation tanks, drying bottles, compressors, etc.

Basically, it should be tested by spraying foam water, and leaks should be found for treatment or replacement. After replacement, the leak detection is re-pressurized, and when it is confirmed that there is no leakage, the snow is evacuated. If you are not sure how many kilograms to add (the amount will vary depending on the model), you don't need to worry about this when adding refrigerant.

We can just look at the pressure values shown in the refrigerant table. The high voltage of most automotive air conditioning systems is around 150; The low pressure is around 30 (these two values are on the refrigerant chart). This is the optimal pressure state for most air conditioning systems.

Note: If there are too many types of snow, please extinguish the excess snow through the snow table, otherwise it will affect the refrigeration, increase the load of the compressor, and disrupt the normal service cycle.

Automobile air conditioning refrigerant needs to be carried out by a special instrument, and the specific operation steps are as follows:

1. Connect the blue low-pressure pipeline of the instrument to the vehicle's air conditioning system.

2. Connect the refrigerant tank to the instrument.

3. Turn the wind speed switch of the vehicle.

4. Press the AC button to make the air conditioner run.

5. At this time, open the rotary valve on the blue low-pressure side and start to add refrigerant.

Notes:1. It's okay if the pressure reaches about it.

2. The connection should be sealed, otherwise it will leak.

What are the steps and methods of adding refrigerant to car air conditioner? What are the steps and methods of adding refrigerant to car air conditioner? The steps and methods of adding refrigerant to the car air conditioner are as follows:

1. Connect the blue low-pressure pipeline of the instrument to the vehicle's air conditioning system. 2. Connect the refrigerant tank to the instrument. 3. Turn the wind speed switch of the vehicle.

4. Press the AC button to make the air conditioner run. 5. At this time, open the rotary valve on the blue low-pressure side and start to add refrigerant. The following is an extended resource on the precautions for refrigeration in car air conditioners:

1. The pressure can reach about it. 2. The connection should be sealed, otherwise it will leak. 3. When adding, first add from the high-pressure pipeline, and then add from the low-pressure pipeline, the compressor cannot run when adding from the high-pressure pipeline, and the air-conditioning system must be at the maximum load when adding from the low-pressure pipeline.

4. The low pressure is above MPa, and the high pressure is above MPa. 5. When adding, two to three cans are added, and the capacity of each can is about 300 grams. @2019

Say, can the car start empty immediately after adding snow seeds, this is a good way to add snow seeds to the car? Do your friends understand? Let the car side Xiao give friends a brief introduction to whether you can start the empty immediately after adding snow seeds, and the car empty is a good way to add snow seeds.

A good way to add snow seeds to the car?

Before adding snow seeds, pressure needs to be applied with a pressure vacuum empty machine to detect leaks. If there is a leak, then a series of accessories such as the air conditioning pipe joint, condenser, evaporation tank, drying bottle, compressor and so on of the air conditioning system basically need to be tested for foam water, and the leak should be treated or replaced. After replacement, re-pressurize the leak detection, and then add the snow seeds without leaking.

A good way to add snow seeds to the car?

Snow sowing process: connect the snow sowing instrument to the air adjustment system (the high and low pressure pipes are basically connected), the vacuum air is completed, and the low pressure vacuum air is selected (turn the corresponding switch of the low pressure gauge counterclockwise, and the switch of the silver gauge should be closed). Most vacuum pumps do not need to look at the negative pressure value.

Pump into the air for 3 minutes. When the time is up, tighten the switch of the low-pressure gauge, and then connect the refrigerant tank for filling (also bury the feast, do not move the high-voltage switch, only turn on the low-voltage switch).

If we are not sure how many kilograms to add (the amount of filling will vary depending on the model), we can just look at the pressure values shown in the snow seed table and not pay attention to this. The high pressure of most automotive air conditioning systems is around 150; Low pressure of around 30 (these two values are on the snow seed table). This is the optimal state of pressure for most air conditioning systems.

It should be noted that if there are more refrigerants, please release the excess refrigerants through the refrigerant table, otherwise it will affect the poor refrigeration, increase the load of the compressor, and damage the normal service life.