MAHLE RTI RRC770A - Manual (Page 13)

Page 10
HOSE EVACUATION PROCEDURE
It's important that Air not be introduced into the A/C System during a Charging procedure.
If a Deep Vacuum and Dehydration 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 Control Settings
Refer to Figure 4 for the following description of operation.
1. Close Red and Blue Hose Valves.
2. Open High and Low Gauge Valves.
3. Turn Mode Selector Switch to RECYCLE.
4. Turn Main Power Switch to RECYCLE. The COMPRESSOR ON Light will illuminate.
5. Let the RRC770 run until the COMPRESSOR ON Light goes off.
6. Turn Low and High Gauge Valves to OFF.
7. Turn Main Power Switch to OFF. All Air has now been removed from the Hoses.
8. Vent any Non-condensable Gas as described in the previous section.