Weak current College】 【screw refrigerant compressors for refrigeration oil maintenance instructions --- Power By】 【China power house network.

<br> 1. the role of lubricating oil: 1) in the screw and compression, as well as the yin and Yang between dynamic sealing screw, reduction of refrigerant in the compresses by high pressure side of the low voltage side. 2) cooling .compressed refrigerant, oil is injected into the compressor, gas absorption in the compresses the refrigerant during heat, reduce the exhaust temperature. 3) in the bearing between the screw for the supported rotor oil film and lubricated. 4) delivery pressure forces that drive capacity .control system, loading and unloading through the compressor of the solenoid valve action, regulation volume adjustment slider position, achieve compressor capacity regulation control. 5) reduce running noise Description: compressor lubricating oil system to maintain within the normal operation of the compressor, the key .issues of General lubricants: 1) mixed with foreign, lubricating oil pollution, congestion oil filter. 2 high temperature effects induced lubricants) deterioration, loss of lubrication features. 3) system of water pollution, acidification, erosion machines. 2. compressor refrigeration oil .detection and replacement: for system manufacturers, the compressor refrigeration oil detection and replacement cycle and its production process control of the manufacturing process. If the system of the evaporator and condenser and the cleanliness control system piping is better then the other pollutants entering the compressor is .relatively small, testing and maintenance cycle can be relatively long. 1. the main monitoring indicators: 1) Ph indicators: lubricants for acidification, will directly affect the compressor motor life, they should periodically check the oil of acidity is qualified. General lubricating oil .acidity below PH6 following shall replace. If unable to check the pH should be periodically replaced the system of drying filter so that the system maintains the aridity in a normal state. 2) contamination indicator: If 100 over frozen oil pollutants, it is recommended that .you replace the frozen 5mg oil. Water content: more than 3), you need to replace the frozen 100ppm oil. 2. replacement cycle: every operation 10000 hours in General shall be the inspection or replacement of a lubricating oil, and after the first .operation, 2500 hours recommended replacement of a lubricating oil and cleaning oil filter. Because system assembled residues after the formal operation will accumulate to compressor. So 2500 hours (or 3 months) should replace a lubricating oil, then follow the system cleanliness State scheduled replacement ., if system cleanliness good, each 10000 hours (or annual) replaced once. Compressor discharge temperature to long-term sustainability at high temperatures, the lubricants deterioration progress quickly, on a regular basis (every 2 months) to check the oil chemical properties, .unqualified is replaced. If unable to regularly check the recommendations can be made according to the following table. Operation of the exhaust gas temperature (℃) 65-75 ° c 75 ~ 85 ° c 85 ~ 95 ° c 95 ~ 105 ℃ 105 ℃ .above replace the time (hour) 10000800040001500500 replacement time (running months) during the operation: 2016831 to daily operation 16 hours calculated 3. refrigerating oil replacement operation method: 1. replace the frozen oil does not do do internal cleanup: compressor, pump sets .action to system recovery to refrigerant condenser side (note the pump set actions not below the minimum suction pressure 0.5Kg/cm2G), will be excluded in the refrigerant compressor, retained little of its internal pressure as a power source, the frozen oil from the .oil angle valve compressor discharge. Compressor oil angle as shown in (a). Refrigeration oil excluded clean, you can set this ※ note: liquidation hole flange (Cap) and the oil level switch flange (cover) is the same as the installation location ., the oil level switch for matching symbols. flange ※ Angle valve is closed, you can use the vacuum pump's suction force the new refrigeration oil by catheter valve from dropping into the compressor, pumping up standard after fueling, will put the valve closed, continue .to the vacuum to standard requirement, ie the complete oil change. So you can prevent the system air leakage caused by subsequent action of difficulties. Vacuum contact recommendations to select high (low) pressure side angle valve (such as shown in diagram 2), .or other relative of high point, preventing damage to frozen oil vacuum pump. 2. replace the refrigeration oil and for internal cleanup: drop oil movements as mentioned above, excluding frozen oil clean and compressor after the internal and external pressure balanced, with Hexagon socket .wrench will loose flange bolts, remove the oil filter connectors and liquidation hole flange (flange or the oil level switch), the compressor spool of pollutant removal clean and check the oil filters are damage hole mesh and on clay, pollutants, blowing, or replacement .of the oil filter, note when filter change in the new interface do you want to tighten the nut, seal, prevent internal leakage; oil filter connector within the liner must be replaced to prevent the leakage; other flange gasket also recommended updates. 4. .Note: 1. different brands of frozen oil must not mix, particularly mineral oil and synthetic ester oil must not mix. 2. If you replace the different brands of refrigeration oil, attention to system within the remnants of the original frozen oil excluded. 3 .. some oil due to moisture, so don't be frozen oil long-term exposure to air. When you install the exposure time as short as possible, and do a vacuum operation. 4. If the system had a compressor motor burned down, .replacing the new machine to pay particular attention to the system to the remnants of acidic material removal, and after 72 hours the debugging operation check frozen oil acidity, it is recommended that you replace the refrigeration oil and dry filter and reduce erosion. After running for .a month or so, once again, testing or replace a refrigeration oil. 5. If there has been a water system, special attention should be paid to clean the water removal, except replace frozen oil, we should pay special attention to detect oil acidity .and timely replacement of the new oil and dry filter..