Piston compressors, screw compressors collectively referred to as positive displacement compressors, and centrifugal compressor is driven by the motor running at high speed impeller centrifugal force generated, so that the low-pressure gaseous refrigerant is sucked from the side of the inlet, due to centrifugal force generated by high speed rotation of the gas so obtained great kinetic energy from the impeller flows out to reduce the flow rate through the diffuser, with the cross-section increases, conversion of energy, the gas pressure energy and a larger pressure rise until discharge. Due to the high rotational speed of the compressor, so that the displacement increases. Suitable for large refrigeration systems. Compact centrifugal compressor structure, cooling capacity, light weight, smooth running, low noise, not mixed refrigerant lubricants during operation. 1. When the cylinder pressure compressor shut insufficient pressure pneumatic cylinder, the compressed air pressure and temperature is mainly the result of fuel injected fuel is slow and can not take advantage of the air compressor manufacturer, air compressor can cause black smoke and lack of pressure. Severe shortage pressure compressor will not start. To ensure there is enough pressure cylinder piston in the cylinder liner with the gap, piston rings backlash, opening gap must meet the requirements. Valve and valve seat seal better, injector seals and the front cylinder head gasket to be intact, and thickness to meet the requirements. 2. combustion chamber volume repaired after the compressor off, tend to make the combustion chamber volume changes, changed the original compression ratio, directly affect the normal operation of the air compressor. The main factors contributing to the combustion chamber volume changes are: anti-loaded piston position, improper cylinder head gasket thickness, worn or bent crank rod air compressor manufacturers, wholesale, swirl chamber inserts dislocation, such as excessive valve subsidence. 3. gasket fabrication and installation off in maintenance operations, often need to replace gaskets, gasket fabrication and installation should pay attention to the following points: (1) be familiar with the various holes on the pads work, not simply percussion produced by the joint surface. (2) a reasonable selection. If large discontinuity, where only its sealing function can be cork, such as valve chamber cover gasket; To play a role in the adjustment and require frequent disassembly should be used in the Green Paper shell. (3) to maintain a predetermined thickness. Various gasket thickness can not be altered arbitrarily, it may change the original machine performance. The charge shim thickness compressor oil pump cover and the pump casing between the compressor oil pressure will be greatly reduced. (4) a reasonable production. Depending on the complexity of the size and shape of the joint surface, and after first cutting punching some compressor manufacturers Which is good, after some first punching cutting, proper use of round hammer, scissors and hollow punches, etc. tools, in order to prevent breakage gasket. (5) to distinguish the direction. Some positive and negative can be installed gasket screw compressor manufacturers, but the hole is not completely symmetrical, if installed backwards, may cover some hole, causing the accident. Which is good air compressor manufacturers _ Qin Wei Air (certified) _ Baoji, Xianyang compressor manufacturers to provide by Qin Wei Compressor Limited. 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.