求翻译：先接好管道，用制冷剂赶走管内的空气，其方法为： 关闭高压手动阀，拆开高压端检修阀和胶管的连接，打开高压手动阀，再打开制冷剂的开关，在胶管口听到制冷剂蒸汽出来的嘶嘶声后，赶快再接管子和高压检修阀，关闭高压手动阀， 用同样的方法赶出低压端的空气，然后关好低压手动阀。是什么意思？

First connected piping, refrigerant rid of the air tube, and its methods: Close the high pressure manual valve, open the high pressure side service valve and hose connections, open the high-pressure manual valve, then open the switch of the refrigerant in the hose mouth to hear the hiss of steam out

The pipe, the refrigerant drove them off the air, and its methods are: Turn off the manual valve, high pressure high opening access to valve and tubing connections manually, open the high-pressure valve, open the switch, refrigerant in plastic pipe heard refrigerant vapors out of the hiss, so hurry

Meets the pipeline first, expels in the tube with the refrigerant the air, its method is: The shutting down high pressure hand operated valve, disassembles the high-pressured end overhaul valve and the rubber tube connection, turns on the high-pressured hand operated valve, again opens the refrigera

First received good pipeline, with refrigeration agent drove tube of air, its method for: close high pressure manual valve, apart high pressure end maintenance valve and rubber tube of connection, open high pressure manual valve, then open refrigeration agent of switch, in rubber tube mouth heard re

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