MAHLE RTI TC640 User Manual
Page 11
RTI Technologies, Inc.
September 15, 1997
Page 10
Figure 4 Hose Evacuation
HOSE EVACUATION
It's important that Air not be introduced into the A/C System during a Charging
procedure. If a 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:
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 TC640 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.