谢谢，你这个是对的。请教一下“then evacuate -pressure hold, add back the us

then evacuate -pressure hold, add back the used refrigerant,

why Pressure Hold? after evacuate.

Thank you.

 

所有跟帖： 

• To make sure there is no leak in the system. -FeloguardAI- ♂ (0 bytes) () 07/11/2023 postreply 19:02:13

• Thanks -Austin8- ♀ (0 bytes) () 07/12/2023 postreply 08:25:56