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工業制冷機組是在溫度、壓力變化范圍較大、轉速較大的情況下運行的。
Industrial refrigeration unit is big changes in temperature and pressure range, running speed of the larger situation.
機器在運轉中會有機械摩擦、氣流沖擊、溫度和壓力突變的情況，因此機械零件、組件、設備好壞，以及整個制冷系統的內部清潔，都會直接影響到制冷機的工作能力及使用壽命。食品冷庫
Machine will be in the running of mechanical friction, flow, temperature and pressure mutations, so the mechanical parts, components, equipment, good or bad, and the entire refrigeration system internal cleaning, will directly affect the machine's working ability and service life.
計劃預防性的檢修分為檢查、修理時兩部分。
Plan of preventive maintenance is divided into two parts inspection, repair.
通過這種檢查、修理相結合的定期檢修工作，以期達到以下三個目的：
Through this inspection, repairs and preventive maintenance work, in order to achieve the following three:
1、延長機器使用期限。
1, extending service life of the machine.
2、避免機器零件過早磨損，經常保持制冷機的良好性能。
2, avoid premature the machine parts wear, often maintain the good performance of the chiller.
3、預防機器的故障，消除發生意外事故的隱患，避免造成不必要的損失。

3, prevention of machine fault, eliminate accident hidden trouble, avoid to cause unnecessary loss.

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