1. 洒水车安装支管压力表，将绿色的软管的一端接压力表的中部，另一端接真空泵，然后进行抽真空作业。

1. Install a manifold gauge set on the sprinkler truck. Connect one end of the green hose to the center port of the gauge set and the other end to a vacuum pump, then perform vacuum pumping.

2. 安装制冷剂罐。把加注罐安装到支管气压表上，完全关闭支管气压计压侧和高压侧的阀门，把制冷剂罐安装到支管气压计中间的绿色加注软管，顺时针转动手柄直到针阀在制冷剂罐上钻个孔，逆时针转动手柄退出针阀，按下支管气压计的空气驱除阀，放出空气直到制冷剂从阀门释出。

2. Install the refrigerant tank. Mount the refill tank onto the manifold gauge set. Fully close both the low-pressure and high-pressure valves on the manifold gauge. Install the refrigerant tank onto the green refill hose at the center of the manifold gauge. Turn the handle clockwise until the needle valve pierces a hole in the refrigerant tank, then turn the handle counterclockwise to retract the needle valve. Press the air purge valve on the manifold gauge to vent air until refrigerant discharges from the valve.

3. 从高压侧加注制冷剂，发动机不工作时，打开高压侧阀门加入制冷剂直到低压表的压力值大约为0.98MPA，加注后，关闭阀门。

3. Refill refrigerant from the high-pressure side. With the engine off, open the high-pressure valve and add refrigerant until the low-pressure gauge reads approximately 0.98 MPa. After refilling, close the valve.

4. 检查漏气，用电子检漏计检测系统漏气的情况。

4. Check for leaks. Use an electronic leak detector to inspect the system for leaks.

5. 从低压侧加注制冷剂，关闭高压侧阀门后，起动发动机并运行空调，打开支管压力计，加入规定量的制冷剂。

5. Refill refrigerant from the low-pressure side. After closing the high-pressure valve, start the engine and run the air conditioner. Open the manifold gauge and add the specified amount of refrigerant.