MAHLE RTI AC800 User Manual
Page 11
RTI Technologies, Inc.
October 6, 1999
Page 10
Figure 3 Deep Vacuum
DEEP VACUUM
If the A/C System is "opened" for replacing components, a deep vacuum must be drawn on the
system before recharging with refrigerant. This vacuuming process removes air and moisture
introduced into the system. A Vacuum Pump in the AC800 provides this capability.
To Deep Vacuum the A/C System, refer to Figure 3 and follow these steps:
1.
Connect Red and Blue Hoses to the high and low sides of the A/C System.
2.
Open Red and Blue Hose Valves.
3.
Press top (ON) of rocker switch marked TEST RUN.
4.
Press top (ON) of rocker switch marked DEEP VACUUM.
5.
The Vacuum Pump will start and the AC800 will draw a vacuum.
NOTE...
If pressure is sensed at the Red and Blue Hoses on the AC800, the Vacuum Pump will
not start. If this occurs, perform the recover/recycle operation described earlier.
ALSO...
It may be necessary to momentarily loosen the Blue Hose to break the vacuum and allow
the pump to start if its operation has been interrupted.
6.
Press bottom (OFF) of rocker switch marked DEEP VACUUM.
7.
Press bottom (OFF) of rocker switch marked TEST RUN.