分体式空调制冷剂的回收方法：接通电源，让空调制冷。用扳手缓慢关闭室外机高压阀，使室外机的制冷剂不再流入室内机。原来滞留在室内机的制冷剂由压缩机抽回室外机，大约经30~60秒后，制冷剂即可回收干净。然后再关闭室外机低压阀，最后断开空调电源。回收制冷剂要注意两个问题
Recovery method of refrigerant for split air conditioner: turn on the power and let the air conditioner cool. Close the high-pressure valve of the outdoor unit slowly with a wrench, so that the refrigerant of the outdoor unit will not flow into the indoor unit. The refrigerant that was detained in the indoor unit is pumped back to the outdoor unit by the compressor. After about 30-60 seconds, the refrigerant can be recovered. Then close the low-pressure valve of the outdoor unit, and finally disconnect the power supply of the air conditioner. Two problems should be paid attention to when recovering refrigerants
（1）要准确控制回收时间。时间太短制冷剂回收不干净；时间太长，由于高压阀已关闭，压缩机排气量阻力增大，工作电流增大，发热严重，而制冷剂不再循环流动，冷凝器散热能力下降，压缩机也无低温制冷剂冷却，故容易烧坏压缩机。
(1) The recovery time should be controlled accurately. The time is too short, the refrigerant recovery is not clean; the time is too long, because the high-pressure valve has been closed, the compressor exhaust resistance increases, the working current increases, and the heating is serious, but the refrigerant no longer circulates, the cooling capacity of the condenser decreases, and the compressor does not have low-temperature refrigerant cooling, so it is easy to burn the compressor.
（2）要防止压缩机从低压阀抽进空气，所以回收制冷剂时，关闭低压阀动作要迅速。若在低压阀半开半闭状态停留时间太长，由于此时低压侧已抽成真空，空气则会乘机而入。
(2) To prevent the compressor from pumping air from the low-pressure valve, so when recovering refrigerant, close the low-pressure valve quickly. If the residence time is too long when the low pressure valve is half open and half closed, the air will enter by chance because the low pressure side has been vacuumized.