ルームエアコンが冷えない：ガスチャージを素人が自分でやった方法

It didn't work at all because it didn't have the refrigerant (R410A) for the room air conditioner (home air conditioner), but after redoing the flaring, repairing the piping, vacuuming, and gas charging (gas refilling/gas replacement), it was completely fixed. I recorded how to do it. 🔻In the last scene, it says that R410A cannot be recharged, but it can actually be.    • 冷えないルームエアコン完全復活！電力計によるガスチャージで素人がDIYで冷媒を簡単に...   If you reproduce this, please only do it with a home air conditioner from the perspective of compliance with laws and regulations. From the perspective of environmental protection, do not release refrigerant carelessly. It differs from the official method in the following three points. It is a heretical way, so to speak. However, I am not trying to spread the wrong method to the world. Of course, I have no intention of deceiving the viewers. It actually worked properly, and both my friend and I are satisfied with the results. ① Replaced the charging scale with an inexpensive fishing scale ② Replaced the 2.5-3mm flare union with a 3mm flare union ③ 3-port manifold with low pressure gauge Instead of switching the valve on and off to vacuum and fill with gas, I replaced it with a 2-port manifold with a vacuum gauge (I connected the vacuum gauge from the vacuum pump to a gas cylinder and filled it up to 1 atmosphere) All of these were done with the bare minimum of amateurish ideas to get by somehow. Table of contents 00:00 Air conditioner gas charging 01:20 Checking the remaining refrigerant 02:50 Checking the open status of the high-pressure and low-pressure valves 04:25 Checking for any defects in the piping by vacuuming 06:58 Identifying the defective part as the connection part of the 3-minute pipe for the internal unit 07:19 Connecting the 2.5-minute pipe and the 3-minute pipe with a 3-minute pipe flare union 08:12 What I pay the most attention to when flaring 08:39 Flaring the 2.5-minute pipe for the 3-minute pipe nut 10:04 Cutting and flaring the 3-minute pipe 13:17 Connecting with a flare union (Tightened with a torque wrench) 16:03 Vacuuming the refrigeration cycle and piping tightness test 17:15 Measure the weight of the cylinder with a fishing scale 18:27 Fill the refrigeration cycle to 1 atmosphere with a vacuum gauge 22:14 Fill the refrigerant R410A to the specified amount 28:09 General precautions for test run and gas charging I previously recorded the gas charging of the air conditioner on my blog https://www22.atwiki.jp/irukakiss/pag... and did almost exactly that. However, instead of 1. pumping down, I started from 2. recovery ②. Also, since I was initially unable to vacuum due to a piping defect, I had to repair the piping (flaring). In the video, it says that the fishing scale is locked and difficult to use, but you can unlock it by pressing and holding the TARE button. I found the manual that I translated into Japanese when I bought it and remembered that you can unlock it after I finished filming the video. It's surprisingly accurate. It's impressive that it's made in China. When I bought it, the manual for this product was only in English, so I looked at it and used it to create a Japanese manual, which I'll write down here. ●Portable scale Japanese manual 1. Buttons ①UNIT: Each time you press this button, the units change from kg to Lb (pounds) to oz (ounces) to jin. ②POWER: Power button. ③TARE: Tare cancel function. 2. How to use ①After pressing the POWER button, when the weight display appears, hang the item to be measured on the hook and hold the upper string to hang it, and the weight will be displayed. Alternatively, you can fix the upper string to something to hang the scale, and hang the item to be measured on the hook. If there is no operation or change in the display for 120 seconds, the power will automatically turn off. ②You can adjust the zero by pressing the TARE button. Hang a container, press the TARE button, and place the item you want to measure in the container to measure the weight of the item added to the container. ③ Press the TARE button for 2 seconds and "L_ON" will be displayed, and the device will enter lock mode. In lock mode, the LED will light up when a measurement is successful, and the value will be held until the TARE button is pressed. While the value is being held, the LED will stay on, and a lock icon will be displayed on the LCD. For example, if you hang a package to measure its weight, and the LED lights up, the measured value will be displayed while the LED is on (until the TARE button is pressed or for 120 seconds). In lock mode, press the TARE button for 2 seconds to release the lock mode, and "L_OF" will be displayed. In this case, the weighing weight will be displayed in real time. 3. Caution ① Do not hang anything weighing more than 40 kg. "O_LD" will be displayed. ② When the "LO" display appears, the batteries (two AAA batteries) are low and should be replaced. #Air conditioner #Gas charging