Talking about the maintenance process of high and low temperature test chamber (on)
High and low temperature test chamber maintenance For many beginners, the biggest stumbling block is the "vacuum" and the final "sealing" process. Based on years of maintenance experience, the author found that many of the newcomers have mostly lost in these two steps. The author below describes in detail his own maintenance methods, hoping to give the reader some inspiration.
First, the method of vacuuming
It is well known that the vacuum in the high and low temperature test chambers is not easy to exhaust the high pressure side air, which leaves a hidden danger to the high and low temperature chamber. This is especially true for repairs in humid environments. Therefore, when repairing and replacing the dry filter, the author will incorporate a capillary between the dry filter and the condenser, and the other end of the capillary will be welded with a three-way repair valve. In this way, when vacuuming, the vacuum pump or the maintenance compressor suction port is connected to the three-way meter valve, the maintenance process port of the machine to be repaired is closed, the machine to be repaired and the vacuum pump are started, and vacuum is simultaneously performed. Use a tube at the exhaust port of the vacuum pump to pass into the water and observe the bubble change until no bubbles emerge. At this time, close the three-way repair valve and vacuum pump. Add a small amount of fluorine to the compressor repair process port of the high and low temperature test chamber to be repaired. After a few minutes, the vacuum pump is turned on again, and all the gas in the test chamber to be repaired is taken out.
In the following, the author will explain the sealing process and the method of adding fluoride in the maintenance process of high and low temperature test chambers. Please keep an eye on this site!
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