In the first two articles, we talked about the adverse effects of moisture and non-condensable gases on the constant damp heat test chamber compressor. Next, we will explain this issue. Fifth, the impact of refrigeration oil In the ammonia system, the lubricating oil from the compressor discharge gas, although separated by the oil separator, still has some oil entering the intercooler, the condenser, the liquid receiver and the evaporator, etc. due to the constant humid heat test chamber refrigeration system. With oil, an oil film is formed on the inner surface of the device to increase the thermal resistance, which deteriorates the heat exchange, affects the performance of the constant damp heat test chamber, and because the specific gravity of the liquid refrigerant and oil is different, the general oil accumulates in the lower part of the device, on the suction pipe. When there are irregularities, the oil collects in the recesses, narrowing the gas passage and increasing the gas flow resistance. Under a certain pressure difference, the oil will suddenly return to the compressor, causing a liquid impact accident. In addition, when the exhaust gas temperature is too high, the oil quality deteriorates, and it is easy to carbonize around the compressor valve, and the carbon deposit may hinder the operation of the gas valve. Therefore, the operator should periodically discharge the oil in the refrigeration equipment, and often clean the row of the compressor. Air valve. Fluorine and oil are generally miscible in the Freon system, and measures are required to bring the lubricant back into the compressor. The foreign matter mentioned above is easy to block the throttle valve or other narrow passages in the system, so that the circulation of the refrigerant is interrupted, and the constant damp heat test chamber is in an idling state; when the foreign matter is inhaled by the machine, the lubricating oil is contaminated, and the wear of the machine is intensified, and the foreign matter is intensified. If it falls on the sealing surface, it will damage the seal of the machine or system. If it is light, it will leak oil and leak, and it will not work when it is serious. 6. Therefore, when installing in a constant damp heat test chamber, the following should be noted: 1. All iron filings, dust, sand, oxides, etc. in equipment and pipelines should be removed; 2. Remove accumulated water from various equipment; 3. Remove grease and other foreign matter from the inside of the constant damp heat test chamber for rust prevention; 4. For newly installed equipment, the ammonia filter, ammonia filter, and suction filter, oil filter, crankcase, etc. of the compressor should be cleaned frequently. Foshan Qiaotai Furniture Products Co., Ltd. , https://www.qiaotaifurniture.com