1. According to the traditional design scheme of the manufacturer of constant temperature and humidity testing machine at home and abroad, the machine with -40 °C to 0 degree is filled with R404 cold coal in a fully enclosed single-group compressor for cooling, and -40 °C is A regular test point, in fact, many of the test requirements of the case require a test requirement of -40 ° C, and most users are set to the -40 ° C standard machine, and many of our manufacturers use a single unit for cooling
2. In such a large machine, many manufacturers often do -40 ° C degrees, or this -40 ° C point a test to hundreds of hours of time, the machine with imported compressors will not be replaced in two years Compressor, what is the original?????
3. The quality of the single-group compressor is not good, the quality of the brand is 404, and the limit temperature of imported R404 cold coal is only -43 degrees, which is only the limit of cold coal, which can be achieved by design and design. The best result? That is to say, you use the single-unit cold coal R404 machine to do the -40 °C test, the cold-moving system has been running at full speed at full speed, this is very unsafe, the cold-moving system may be at any time The ambient temperature is slightly high and alarmed, or damaged at high speed for a long time.
4. Our company has done a long-term test and improvement on this. Now we use a cascade unit for the -40 °C machine, and use the cold coal of R404 and R23 imported from the United States for refrigeration. The cold coal limit of R23 The temperature can reach -83 °C, and the machine with this cold moving system will be more stable and reliable.
5. Since the production is in production, many users are more confident in the speed, stability, and life of the cooling system.