A) lubricating properties: viscosity compressor oil lubricated with compressor oil performance quality related. Generally speaking, there is no viscosity or viscosity reduction means lower after oil lubricated compressor performance deteriorated compressor oil of lubricating properties. This can not form a sufficient film strength, adhesion or adhesion deteriorates accordingly. Will not achieve good lubrication. Compressor oil performance advantages and disadvantages of test: the compressor oil stained friction between thumb and forefinger, if feeling sticky. It can be concluded that there is good air compressor oil lubrication properties. If astringent feeling compressor manufacturers supply, it can be concluded that compressor oil has been lost due to the lubricating properties. B) Moisture: The compressor oil into the test tube. It appears cloudy, it was observed transparency. If it is not crystal clear. You can determine the initial compressor oil contains water in the end in order to determine whether the oil contains water, there are two reliable methods: 1. Anhydrous sulfuric acid steel (red powder) into a test tube containing the compressor oil. This also proves that the oil in the presence of moisture contained in the two methods do not give much moisture, such as copper sulfate from white to blue. Depending on how much and how much can be empirically applied copper sulfate compressor oil during heating bubbling to estimate. 2. The oil poured into the tube to be tested. On alcohol lamp heating. If bubbles appear, fuel two-thirds of the tube volume. The tubes with cork and wax sealed after opening. At the same time issued a "pop" pop "sound, and in the wall of the tube above the oil water droplets condense, can explain the presence of moisture in the oil in the compressor must be checked before the start of the insulation resistance is qualified, check the secondary circuit wiring is correct, and motor interior should be dry, clean air compressor manufacturer leasing, no debris. fastening bolt is loose observe the motor bearings is oil, the stator and the rotor gap is reasonable. fuses, contactors , circuit breakers, thermal relay protection setting value is reasonable, wiring and gear meets the requirements of the motor starter. Check for abnormal situations, such as the motor does not start, start slow, abnormal sound, etc. to start the process air compressor manufacturers, as long as the abnormal phenomenon, immediately cut off the power supply down to check. In the vicinity of both sides can not be part of the motor drive or drag devices, there are others who stand to avoid damage to the rotation was flying accidents. Motor number should not be more than three consecutive starts -5 times, to avoid starting equipment and motor overheating compressor running pay attention to check the motor rotation is flexible oil-free compressor manufacturer, without noise, rotation direction is correct; power supply voltage is normal, there is no current exceed the rated current; examine the electrical pen with the motor housing check to see if there is leakage and poor grounding phenomenon; check motor driven devices work without exception; any unusual circumstances to stop immediately, check and then operate oil-free air. press manufacturer, Qiang lake air compressor manufacturer, Qin Wei Qin Wei compressed air provided by the Xianyang Compressor Co., Ltd. Xianyang Qin Wei Compressor Co. (www.xykyj.cn/) strong, credible, compression in Shaanxi Xianyang, separation equipment industry has accumulated a large number of loyal customers. The company better work attitude and continuously improve innovative ideas will lead Qinwei Air into the brilliant and you work for a better future!