The constant temperature and humidity chamber consumes time, because the test requires the corrosion of some chemicals or some failures during long-term operation, which leads to the failure of the constant temperature and humidity chamber or the possibility of scrapping. In the constant temperature and humidity chamber, the phenomenon that the compressor has too low exhaust pressure or the refrigerant quantity in the working state will affect the test smoothly or get accurate results. Under the occurrence of these faults, solve the problem. The method is what we need to know.
1. As mentioned above, the compressor has a phenomenon that the exhaust pressure is too low, whether it is the shortage of the refrigerant in the system, the compressor exhaust valve or the pipeline has serious leakage causes. The solution to this problem is to remedy the situation by making up the situation, replenishing its refrigerant charge, replacing its compressor or leaking its pipeline.
2. In the constant temperature and humidity chamber, the compressor discharge pressure is too high, check whether it is a non-condensable gas containing a large amount of air in the system, whether the air-cooled condenser is too thick, whether it is There is too much refrigerant in the system or the exhaust valve is not open. For the emergence of these problems, it is necessary to solve the problem, put the air, clear the condenser and release excess refrigerant from its system and open the relevant valves;
3. When the suction pressure of the compressor in the constant temperature and humidity chamber is too low, there is a situation where the drying filter is clogged, the capillary is blocked, the suction method is not opened, the refrigerant amount in the system is insufficient, or the circulating lubricating oil in the system is excessive. The solution is to clean or replace the dry filter, replace its capillaries, and open the inhalation method and add refrigerant;
4. When the suction pressure of the compressor of the constant temperature and humidity chamber is too high, because the refrigerant amount in the system is too much, the heat load is too large, the suction valve piece is broken or leaks, the relative solution is removed in the system. Excessive refrigerant, try to reduce its heat load and overhaul or replace its compressor. Solution analysis is a top priority for any problem with failures. The analysis of the above problems and the explanation of the solutions are all planned for the subsequent experiments. It is well known that routine maintenance treatment is also part of maintaining the life of a constant temperature and humidity chamber for long-term use.
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