AC air conditioner pressure measurement, the master generally measures after a few minutes??

As soon as the system is up and running, the system has been circulating, and the measured data is real. + g& g: b) Y8 L is not changing while adding pressure to see the pressure, if it is adding liquid, isn't it a matter of a few minutes?!

There is a question of when to measure?! View the original post

Trouble, thanks!

z+ c: q5 j, c7 e. j" ^1 s1 g4 u- |q- %n( |c) v.

The X- T8 L V8 L moderator seems to have made a mistake! % k4 q" c' w' p7 |(m;n a) y, h) o4 v% b to measure the system pressure must work for several minutes after the pressure is balanced The measured data is correct1 r% r; m# c- d! s/ h2 _+p$ y' a.

v5 |(g7 q"U9 K We measure a stable high pressure that is typically measured after 3 to 10 minutes of compressor operation. Low pressure is considered as standard pressure! View the original post

Reply 10 - z u: r3 ?1 i7 x% z$ d5 q4 ^!

1 u, p4 i: g k+ y3 o'l$ k a 9th floor should be right, the pressure can be measured at any time, the measured data is real, only the actual data is useful. View the original post

An air conditioner pressure gauge should be used to measure the pressure of the air conditioner.

The pressure gauge is generally used in conjunction with the three-way repair valve, and the way to use it is:

1. Turn on the switch of the pressure gauge and connect the hoses to the maintenance valve joints on the air conditioner.

Note that the blue hose is connected to the air conditioner's low-pressure pipe, and the red hose is connected to the air-conditioner's high-pressure pipe. The yellow hose is connected to the refrigerant cylinder or vacuum pump.

2. After connection, you can see that there are two rows of circular numbers on the dial, which are divided into red and blue. Plus a pointer.

3. The red is the high pressure degree, and the blue is the low pressure degree. The numbers that are generally referred to are low pressure.

4. When any air conditioner using Freon 22 is running in the refrigerated state, the pressure at the ambient temperature of 25 degrees to 45 degrees should be.

5. The temperature of R22 depends on the innermost red ring, and the corresponding value of the pressure of R22 depends on the value of the outermost black ring (35kg cm = is 10 times the relationship).

6. The four mediums in the red circle and the blue circle are the temperatures of different media corresponding to the same pressure.

7. The scale on the table is the pressure, and the discharge pressure (high pressure) and inlet pressure of the compressor can be known through the pressure display.

In the case of air conditioning and refrigeration, open the small nut at the low pressure pipe (thick pipe), which is the process port. Connect the pressure gauge, and the measured pressure is the return pressure, that is, the low pressure pressure. Generally, the pressure of the high-pressure pipe (thin tube) cannot be measured in between, because there is no process opening.

But the bigger air conditioners will have it. But measuring high pressure is generally meaningless.

Air conditioner is the abbreviation of air conditioner, which is a device that processes the temperature, humidity, purity and airflow speed of the air to meet the needs of people's production and life. Hanging air conditioner is one of the types of air conditioner, which is used to provide a unit to deal with air temperature changes in a space area that saves space (usually closed). Its function is to adjust the parameters such as temperature, humidity, cleanliness and air flow rate of the air in the room (or enclosed space or area) to meet the requirements of human comfort or process, but the size of the air conditioner should be selected according to the size of the space.

Generally, the low-pressure end can be directly connected to the pressure gauge at the shut-off valve, and to measure the high pressure, it is necessary to weld the capillary on the pipeline and then connect it to the pressure gauge.

Weld a capillary tube on the pipeline of the air conditioner, and connect the external pressure measuring equipment.

The air conditioner pressure test takes 24 hours.

After the welding of the air conditioning cold envy excitation tube is completed, the pressure test of the copper pipe must be carried out, and the copper pipe is filled with nitrogen of a certain pressure for pressure maintenance, the general pressure test time is 24 hours, the use of R410 refrigerant, the pressure in the pipe needs to be kept at 40 kg, and the pressure in the tube with R22 refrigerant needs to be kept at 20 kg. If the vacuum pressure can be used to pump the system to -76kpa, observe for 24 hours to see if there is any change in pressure, if the pressure is significantly increased to destroy the vacuum, then the system is leaking. Positive pressure leak detection must be added, and if the vacuum degree is not destroyed, refrigerant can be added directly for debugging.

**Common sense of air conditioning installation:

The machine selection is rather large than small, and the idea that the air conditioner model can be reduced if the population is small and the use of fewer rooms is incorrect.

The location of the outdoor unit must be placed in a well-ventilated place, if the ventilation is not smooth, it will greatly affect the air conditioning capacity.

The position of the indoor unit is generally not placed on the top of the bathroom or kitchen, if it must be placed, it is necessary to formulate a return air plan, do not return air in the bathroom or kitchen.

The indoor unit should leave an access opening to ensure future maintenance.

Select the location of the air supply outlet, so that the air energy in the air-conditioning area can circulate.

The size of the air supply outlet should be guaranteed to be a certain size of the air supply outlet, and the air supply outlet will affect the air conditioning effect.