空调移机维修时冷媒回收防爆操作方法

Operation method of refrigerant recovery and explosion protection during air conditioning maintenance

回收冷媒（避免系统进入空气）正确操作方法：

Correct operation of recycling refrigerants (avoiding system entry into air):

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. Wait until the pressure hose of the pressure gauge is released for 2 seconds to tighten all hoses (drain the hoses).

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 low pressure pressure drops to 0.05MPA, close the large valve immediately and cut off the compressor power supply.

二、气密性检查（确认压力表各软管密封良好）

Two. Tightness check (confirm that the hoses are 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 hoses and check the sealing points of the connection points 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 prohibited in installation and maintenance. There is no source of fire or heat source in the operation area within 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. According to the chemical industry standard, the safety regulations of the factory area fire operation, the welding must meet the relative ignition distance between the oxygen and the combustible gas more than 5 meters, and the ignition point more than 10 meters.

3、焊接氧气、可燃气体必须有压力表、回火装置操作要求：

3. Welding oxygen and combustible gas must have pressure gauge and tempering device.

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 operation certificate issued by the state labor department. The unlicensed operation will result in adverse consequences and responsibility.

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) oxygen bottle should be checked once every three years, and the gas bottle should be checked once a year.

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 bottle and oxygen bottle should be far away from the fire source, avoid high temperature sunshine, the ambient temperature should not exceed 50 degrees Celsius; strictly prohibit the use of hard objects and heavy objects to strike, impact oxygen bottle and gas bottle, avoid heat storage and take care to put it carefully.

4）燃气瓶充气量不得超过燃气瓶容积的1/2；

4) the gas filling volume of a gas bottle should not exceed 1/2 of the volume of the gas bottle.

5）氧气瓶中的氧气不能全部用尽，必须保留0.5Mpa的剩余压力！

5) oxygen in the oxygen bottle can not be used up completely, and the remaining pressure of 0.5Mpa must be retained.

6）氧气表出现故障须由专业人员修理更换，他人不得擅自拆缷！

6) failure of oxygen meter should be repaired and replaced by professional personnel.

7）燃气瓶、氧气瓶不得混装其它气体，严禁沾染油污！

7) gas cylinders and oxygen cylinders must not be mixed with other gases, and oil pollution is strictly prohibited.

8）焊枪、干式顺火防火器等相关主件，每次使用前必须仔细检查功能、性能是否完好，每年安检送由产厂负责；

8) welding torch, dry type fire extinguishing device and other related parts. Every time before use, the function and performance of the fire-fighting device must be carefully checked.

9、如违反上述事项，发生事故一切自负！

9, if such a violation of the above, the accident all conceited!

10）使用前先用肥皂泡检查气密性。

10) check the air tightness by using soap bubbles before use.

11）点火先开可燃气体再阀开氧气阀，关火先关可燃气体阀再关氧气阀

11) ignition first opens the combustible gas and the valve opens the oxygen valve. Turn off the fire and turn off the combustible gas valve first and then turn off the oxygen valve.

4、严禁凭感觉追加冷媒

4. It is strictly forbidden to add cold medium by feeling

此时运行高压上升，低压变负压，系统存在吸进空气的隐患，且压缩机壳体温度上升。

At this time, running high pressure rises, low pressure changes negative pressure, the system has hidden danger of air intake, and compressor shell temperature rises.

5、严禁拔掉外风机或全遮挡冷凝器查漏查堵查漏，充注制冷剂要求采用定量方式注入。

5, it is strictly prohibited to remove external fans or totally shielded condensers for leak detection, blocking up and leak detection.

6、严禁采用劣质冷媒或假冷媒

6. The use of low quality cold medium or false cold medium is strictly prohibited

1）严禁购买低价劣质冷媒，低价冷媒可能混合甲烷、R40等高可燃物质，使用劣质冷媒系统发生燃烧和爆炸的可能性加大。

1) it is forbidden to buy cheap and inferior refrigerant, low price cold medium may mix methane, R40 and other high combustible materials, and the possibility of burning and exploding with inferior refrigerant system is increased.

2）系统有冷媒严禁焊接。

2) the system has cold medium strictly prohibit welding.

3）严禁用明火加热制冷剂罐充注制冷剂

3) it is strictly forbidden to heat the refrigerant tank with an open flame and charge refrigerants.

7、移机与维修环节

7, transfer and maintenance

操作方法：饱和状态下放置一小时候，冷媒罐压力与环境温度对应关系在±0.2MPa范围内为合格，超出此范围的为假冷媒或劣质冷媒。

Operation method: when the saturation state is placed for a small time, the relationship between the pressure of the tank and the ambient temperature is qualified within the range of + 0.2MPa, which is a false cold medium or inferior refrigerant beyond this range.

附：劣质冷媒或假冷媒识别方法——R410A

Appendix: poor quality refrigerant or false refrigerant identification method -- R410A

附劣质冷媒或假冷媒识别方法——R32

R32 with inferior cold medium or false cold medium identification method

8、测试压力或充注制冷剂

8. Test pressure or filling refrigerant

为防止接压力表过程进空气和制冷剂伤手，测试压力和充注制冷剂需加装安全加液阀（如下图）。

To prevent air entering into the pressure gauge and refrigerant injecting hand, the safety pressure valve should be added to the test pressure and charge refrigerant (figure below).

1）切断空调电源。

1) cut off the air conditioning power supply.

2）选择合适的安全加液阀（R22和R32残品接头规格有区别）。

2) choose the right safety add fluid valve (R22 and R32 defective fittings specifications are different).

3）压力表软管接安全加液阀（先把顶针旋钮逆时针拧至底部。

3) the pressure hose of the gauge is connected with the safety liquid adding valve (first, the countertop of the thimble knob is turned to the bottom counter clockwise.

4）按步骤排掉压力表端软管空气。

4) discharge the air of the hose end hose according to the steps.

5）卸压力表前先逆时针旋开安全阀顶针旋钮。

5) turn the safety valve thimble knob counterclockwise before releasing the pressure gauge.

6）拧下充注阀端安全加液阀。

6) unscrewing the safe filling valve at the end of the filling valve.

7、严禁不与室内机连接开机运行

7. It is strictly forbidden to open the machine with the indoor machine

室外机与室内机没对接，或没打开大小阀门开机，压缩机壳体温度将上升，存在安全隐患（如下图）。

There is no connection between the outdoor unit and the indoor unit, or the valve is not opened. The temperature of the compressor shell will rise, and there are potential safety hazards (as shown below).

8、严禁没确定机器是否泄漏情况下贸然追加冷媒

8, strictly prohibit whether the machine is leaked or not.

缺冷媒特点：

Lack of refrigerant characteristics:

1）制冷制热效果差

1) the effect of cooling and heating is poor

2）报F0故障（压缩机能启动）

2) report F0 failure (compressor can start)

3）不定期出现故障（压缩机能启动）

3) unscheduled failure (compressor can start)

操作要求：

Operation requirements:

高风档制冷（夏天）制热（冬天）5分钟，检测室内机进出风温差。

High wind cooling (Xia Tian) heating (winter) for 5 minutes, indoor air temperature difference between indoor and outdoor.

1）制冷温差6℃以上，制热温差8℃以上，可以正常维修；

1) the refrigeration temperature difference is above 6 degrees, and the temperature difference between 8 and above can be maintained normally.

2）低于以上值，需要关机测静态压力，售后需根据静态压力值决定是否需要全部放掉冷媒处理。

2) below the above value, it is necessary to shut down to measure static pressure.

维修环节（严禁没确定机器是否泄漏情况下贸然追加冷媒 ）

Maintenance link (strictly prohibit whether the machine is leaked or not)

操作要求：

Operation requirements:

3）关机10分钟，然后观察静态压力，如低于对照表值，说明系统冷媒少于30%，此时严禁开机维修，必须全部放掉系统冷媒再进入下一步操作。

3) turn off the machine for 10 minutes, and then observe the static pressure, such as lower than the control table value, indicating that the system cooling medium is less than 30%, it is strictly prohibited to open the machine at this time, and all the system cooling medium must be released to the next step.

例：R32产品。室内30℃，室外35℃

R32 product. Indoor 30 C, outdoor 35 degrees C

操作要求：

Operation requirements:

静态压力以室内温度为对照基准，当表压〈1.40MPa时，说明系统有空气，存在安全隐患，必须放掉冷媒差漏补焊后再处理。

The static pressure is based on the indoor temperature. When the pressure is "1.40MPa", the system has air. It has the hidden danger of safety. It must be retreated after the medium leakage and repair welding of the refrigerant.

四、安全防范总结

Four. Summary of safety precautions

（一）售后人员上门维修空调前一定要详细咨询用户，空调是否有历史维修记录？是否有移机和改造记录?如有，售后人员需对空调的历史记录进行安全隐患识别和预防。严禁不按公司售

(1) after-sale personnel must consult the users in detail before they come to repair the air-conditioning. Is there any historical maintenance record for the air conditioner? Is there a shift and modification record? If yes, after sales personnel need to identify and prevent the safety hazard of the air conditioning history. Strictly prohibit the sale of the company