严禁凭经验确定拆室外机或移机回收冷媒，回收时间受整机运行频率、运行风速、气候等影响较大，凭经验很难判断冷媒恰好全部回收完毕的时间点，当系统负压后，如此时低压侧有泄漏，将吸入空气，存在较大安全隐患。

Is determined by experience or remove the outdoor machine machine refrigerant recovery, recovery time by the operating frequency, wind speed and climate influenced by experience, it is difficult to judge the refrigerant just recovered all time points when the system pressure, so when the low voltage side leakage, sucked into the air, there is a big security risk.

正确操作方法：接压力表，根据压力确定关闭大阀门时间。

Correct operation: connect the pressure gauge to determine the closing time of the large valve according to the pressure.

回收冷媒（避免系统进入空气）正确操作方法：

Recovery of refrigerant (avoid system entering air) correct operation method:

1、断开电源

1. Disconnect the power supply

2、拧紧压力表旋钮

2, tighten the pressure gauge knob

3、逆时针稍拧松接压力表端软管

3, reverse clockwise loosening of the pressure meter end hose

4、压力表一端软管接充注嘴并旋紧

4. The hose at one end of the pressure gauge is filled with the nozzle and tightened.

5、待压力表端软管有气喷出2秒左右拧紧所有软管（排掉软管空气）

5. Tighten all the hose (out of the hose air) at the end of the pressure gauge with a gas ejection of 2 seconds.

6、关闭小阀门，当低压压力降至0.05MPA时，马上关紧大阀门，同时切断压缩机电源。

6, close the small valve, when the pressure drop to 0.05MPA, immediately close the large valve, and cut off the compressor power.

二、气密性检查（确认压力表各软管密封良好）

Two. Air tightness check (confirm that the hose is well sealed)

正确操作方法：

Correct operation method:

1、拧紧各软管后检查各连接点密封性，确保密封良好

1, tighten the hose and check the sealing of each connection point to ensure good sealing.

三、维修环节

Three. Maintenance link

1、安装、维修环节严禁抽烟，两米范围内的操作区域严禁有火源或热源。

1. Smoking is strictly prohibited in installation and maintenance. Fire or heat sources are strictly prohibited in the operating area of two meters.

2、严格执行焊接操作规范。采用符合国家规定的压力容器。遵守化工行业标准《厂区动火作业安全规程》，焊接必须满足氧气、可燃气体之间≥5米，与动火点≥10米的有关动火距离。

2, strictly implement the welding operation specification. Use the pressure vessel in accordance with the state regulations. Comply with the chemical industry standard "the hot work safety regulations", must satisfy the welding between the oxygen, combustible gas is not less than 5 meters, and the hot point is not less than 10 meters distance on fire.

3、焊接氧气、可燃气体必须有压力表、回火装置操作要求：

3. The welding oxygen and combustible gas must have the pressure gauge and the tempering device operation requirements:

1）操作人员必须持有国家劳动部门核发的焊工操作证，无证操作产出不良后果，责任自负！

1) the operator must hold the welder's operating certificate issued by the state labor department, the undocumented operation of the result of bad output, the responsibility to be conceited!

2）氧气瓶三年安检一次，燃气瓶每年检查一次，由用户所在地专职检验单位负责检验；

2) the oxygen bottle is checked in three years, the gas bottle is checked once a year, and the full-time inspection unit of the user is responsible for the inspection.

3）燃气瓶、氧气瓶要远离火源，避免高温日照，周围温度不得超过50摄氏度；严禁用硬物、重物敲击、撞击氧气瓶和燃气瓶，避热贮存，小心轻放！

3) gas cylinders and oxygen bottles should keep away from fire sources, avoid high temperature sunshine, and the ambient temperature should not exceed 50 degrees Celsius. Strictly prohibit hitting hard and heavy objects, hitting oxygen bottles and gas cylinders, avoiding heat storage, and carefully handle them.