汽车冷媒加注方法如下:1、汽车空调加注制冷剂前,先抽真空1小时。在系统无漏且内部绝对真空的状态下,打开R134a钢瓶且瓶口向下,拧松压力表中间软管接头,排去此段软管中的空气,打开高压侧手动阀,从高压侧灌入液态制冷剂。
2、当高、低压表的压力达到平衡不再上升时,关闭高压侧手动阀,让R134a钢瓶瓶口向上,停五分钟以上。
3、启动空调机,打开低压侧手动阀,从低压侧灌入气态制冷剂,严禁从低压侧灌入液态制冷剂。此时发动机转速应保持在800-1200rpm。
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