【 Weak current College 】 refrigeration oil in the refrigeration applications

Refrigeration equipment for copper-plating is made with freon refrigerant in the refrigeration system, its iron and steel components used in the process often form a layer on the surface of copper atom deposition, this is the so-called phenomenon of copper plating.

Refrigeration equipment for copper is because refrigeration oil and freon in high temperature and moisture of chemical reactions in the presence of the following:
R1CH2CH2R2＋CCl2F2——R1CH＝＝CNR2＋CHClF2＋HCL
2NCl＋2Cu＋〔O〕——2CuCl＋H2O
Fe＋2CuCl2——FeCl2＋2Cu

Refrigeration equipment for copper-plated brass will cause parts (such as connecting small head steel bearings, shaft and so on) of corrosion, causing the gap increases, seal the bad, and the copper capillary tube diameter of parts, impede the flow of the refrigerant, affect the efficiency of the adverse consequences such as refrigerant.

Refrigeration equipment for copper phenomenon are two ways to prevent:
1. use of freon refrigerants have good thermal chemical stability of L-DRB-level wholly sealed refrigeration oil.
2. as far as possible the removal of oil and water cooling system.
Refrigeration equipment: fridge Gallery ice barrier causes and solutions:

1. lack of refrigerants: refrigeration refrigeration system operating normally. Refrigerating effect. Normal high pressure exhaust pressure ratio, low-voltage low back to the gas pressure than normal low or negative. Condenser than normal without ironing or tepid. Add refrigerant is in the process of opening and refrigerant cylinder connection pipe valve inline between a great cubic freezers with filters. Used to filter out impurities in the refrigerant and residual moisture. To prevent blockage. This filter by 75 ¡æ ~ 100 ¡æ drying or replace the blue silica gel after repeated use.

2. replace the oil: refrigeration cycle, in the maintenance and replacement of refrigeration oil, you can first refrigeration oil heating with electric oven to 100 degreescentigrade and maintain a constant temperature asked Ben? make refrigeration oil residual moisture within were evaporate after replacement. To prevent blockage. On refrigeration oil heating thermostat, prohibit the open fire and the workplace to be well ventilated. Attention to environmental protection. Crippled oil not arbitrary.

3. replace the compressor refrigeration cycle, in maintenance replacement compressor unit. Within the compressor refrigeration oil down or release. Follow step 2 on the refrigeration oil for dry processing. In the refrigeration oil 75 ℃. Inhalation compressor unit. The amount required by the standard. Closed back-port and technology. Opening party-port. Starting compressor operation for a period of time. Use compressor heat generated from running under high temperature and pressure within the compressor was not completely discharged from the residual moisture evaporation. And fast Assembly is complete.

4, cooling circulation system piping problems: firstly to replace the damaged spot welding of pipe segments and or leakage. Thread connection loose connection head redo and fastening. To ensure that the pipeline pressure pressure detection without leakage. The refrigeration cycle pipeline pressure and low pressure stage four recorded rinse of carbon and nitrogen blow NET hold ready. There is also a method that is on the leak spot repair leak-circulatory system piping via 75 ¡æ ~ 100 ¡æ vacuum drying and also to allow residual moisture evaporation. Compressor unit must strictly according to step 3. Replace the new filter. And then blowing hold ready refrigeration cycle pipe breaks and compressor quick Assembly is complete. Then follow the steps 1 to quantitative filling of refrigerant. Wait for five minutes (wait for the refrigeration cycle pipe of high pressure and low pressure area pressure static balance) power on the machine.

5, maintenance measures: refrigeration cycle in open maintenance work for a long time. On non-is maintenance department to seal or seal against moisture. Is maintenance department to quick Assembly and disassembly. And do not choose in rainy weather maintenance.

6. maintenance, minor blockage of refrigeration equipment: recyclable refrigerant, replacement filter, and a high pressure exhaust-side in-line high cube refrigerated cabinets with filters. Quantitative filling refrigerant again. For freezer cabinets with 1000W tungsten iodine lamp baking (Note: the temperature is lower than 70 ° c). Power on the machine for an hour. Recycle refrigerants, remove and at high pressure exhaust-side in-line a great cubic freezers with filter, replacement filter, the quantitative filling refrigerant. When recovering refrigerant in a pipe-line cubic filters for freezers for filter out impurities in the refrigerant and residual moisture. To guarantee the quality of the refrigerant.