The main factors affecting the life of the motor for the compressor: in the refrigeration system, if a certain contamination will adversely affect the normal operation, and even shorten the life of the compressor motor, as well as damage. The refrigeration system to produce pollution sources into two categories:
One is residual moisture, one is rust and other impurities. In addition, dirty frozen oil (bad) will cause pollution to the system.
In the several factors, the most damaging of water to the system, copper effect prone valve plate, piston pins, cylinder walls, bearings and other parts of the surface. When the refrigerant in the water decomposition reaction and produce a corrosive effect will form copper atoms deposited layer, this phenomenon can copper parts and shorten the life of a defect will cause a gap between the moving parts of the friction surface is too large, causing damage parts, often adverse seal.
Water can also promote Lubricant - reaction of the refrigerant, the acid value is increased, decreased motor insulation performance, and on a polyester film since the role of water decomposition, embrittlement and cause the film to lose insulating properties.
When various impurities and residual refrigerant coexist and circulation, due to the power supply voltage, and other conditions caused by temperature, produce acid, the acid is a refrigerant, the refrigerant - lubricant decomposition product, there has been sour, not only refrigerator parts to rust, and insulation materials for the motor reaction, so the possibility of an increase in the motor burned, this phenomenon is particularly evident R22 circulatory system. After the compressor motor burn, the acid content will rise, but the acid is present in almost all of the lubricant.