Refrigerant Charging: Evacuation

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Open all the valves of the manifold gauge.
CAUTION:
- Close the manifold gauge valve immediately after stopping the vacuum pump. If the valve is left open, the vacuum pump oil will back flow into the refrigeration cycle and cause a decrease in the efficiency of the air conditioner.
Start the vacuum pump and let it operate for 15 min.

Fig 1: Identifying Manifold Gauge And Close Valve
Courtesy of MAZDA MOTORS CORP.
Verify that high- and low-pressure side readings of the manifold gauge are at -101 kPa {-760 mm Hg, -29.9 in. Hg}. Close each valve of the manifold gauge.

Fig 2: Identifying High- And Low-Pressure Readings Of Manifold Gauge
Courtesy of MAZDA MOTORS CORP.