Troubleshooting industrial chiller compressor What a bad one poor compression compression phenomenon, the suction pressure is too high, too low, two compressor discharge pressure causes of the current two compressor overheating too low a voltage high power two electric 3 Refrigerant inadequate (suction pressure is low) 4 5 lubricant discharge pressure is too high, less than 6 valves damaged tube obstruction 7 8 9 expansion valve blockage compression ratio is too high a mechanical failure three light load operation of air compressor manufacturers Which is good, ON-OFF roundtrip start-stop operation, resulting in rings spring breakage. 2 expansion valve action or temperature probe placement is bad, causing the reflux liquid refrigerant in the compressor, causing damage to the hydraulic valves. 1 compression noise four tones - discharge pressure is too high, the refrigerant superheat great. 2 interior noise - rings spring compressor manufacturers impairment due to contact with the rotor and stator of the motor. 3 motor sound - low voltage, compressor coil burning smell, because the bearing is damaged, the rotor and stator. 4 metal sound - valve damage, discharge pipe breakage. General use of AC motor drive. 150Kw less power when powered by squirrel-cage induction motor, because of its simple structure, reliable, easy to start, easy maintenance, low prices. However, a small squirrel cage motor starting torque, starting current, due to start compressor is unloaded, full torque starting torque of only about 25 to 30 percent of air compressor factory outlets, so little of the motor torque not much impact compressor, and the starting current is too large will cause a voltage drop and volatility of the grid. Of the grid voltage fluctuation demanding area, you can use a wound rotor induction motor, in order to prevent excessive startup current, but the winding starter complex, higher prices, management is not easy, so when the drive power is less than (40 ~ 50) kw compressor to use more squirrel-cage, you have enough power reserves in the grid is still using squirrel cage. Synchronous motors use more common drawback of both asynchronous motor power factor cosa <1, line losses consume a large part of that is no big power, which is very detrimental to the power grid, so when power is greater than 150kw (also some data suggested 400kw) when . Synchronous motor a little something to make invalid current output back to the grid, improve power factor cosa, so cosa = 1, and even become ineffective interest rate generator (current lead, with compensation cosa). Disadvantages synchronous motor is complex and expensive, requiring a higher level of management. Motor driven, for small and medium sized compressor through V-belt drive or direct drive through semi-flexible coupling. Advantages of using a belt drive is higher than the compressor can choose the number of revolutions of the motor, the motor in order to cheap and light weight, the disadvantage is that the belt drive to consume part of the power transmission process. Medium-sized compressor with direct drive motor rigidly connected, or the electric motor mounted directly on the motor compressor crankshaft become suspended. A little something rigid rotor compressor connected doubles as flywheel, the disadvantage is the time required for the assembly of high professional air compressor manufacturers, semi elastic connection to neutral though very strict requirements, but only from the moment of inertia of the motor rotor left and right portions of the flywheel, the compressor must be installed in a separate dedicated flywheel. Professional air compressor manufacturers | Qin Wei Air (certified) | Langfang Compressor Co., Ltd. is provided by the manufacturer Xianyang Qin Wei air compressor. Xianyang Qin Wei Compressor Co. (www.xykyj.cn/) is Xianyang, compression, separation equipment leader, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Qin Wei Air leadership with the staff warmly welcome all inquiries negotiations to create Qin Wei Air a better future.