When to add refrigerant to an evacuation system?
When to add refrigerant to an evacuation system? Now that you have achieved vacuum Zen, the [&refrigerant&] charge must be added. Add [&refrigerant&] slowly until the system [&pressure&] is reading a slight positive. It is very important to know the positive [&pressure&] your [µn&] [&gauge&] is able to withstand so it [&does&] not get damaged during this process. What happens to the micron gauge after an evacuation? Once the target vacuum has been achieved, isolate the system from the pump and observe the micron gauge reading. A common term for this procedure is called a “decay test”. If the system...