MAHLE RTI TC670E - Manual (Page 12)

RTI Technologies, Inc.
Page 11
HOSE EVACUATION
It's important that Air not be introduced into the A/C System during a Charging procedure. If a Deep
Vacuum procedure was performed previously, the following Hose Evacuation Procedure is not
required. If the service valves on the hoses have been open, the following procedure must be
performed:
Figure 4 Hose Evacuation
To Evacuate Hoses, refer to Figure 4 and follow these steps:
1. Close Red and Blue Hose Valves.
2. Open High and Low Gauge Valves.
3. Press top (ON) of rocker switch marked RECOVER/RECYCLE.
4. Let the TC670E run until a vacuum is seen on the Low Side Gauge.
5. Turn High and Low Gauge Valves to OFF.
6. Press bottom (OFF) of rocker switch marked RECOVER/RECYCLE. All Air has now been
removed from the Hoses.
7. Vent any Non-condensable Gas as described in the previous section.