Filter
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First Evacuation of Appliances with R600a in the
System
1. Drilling and tapping of filter drier, after thorough cleaning
where the gasket of the tongs must be tight.
2. Mount the hose - open the valve. The system can then be
blown through with nitrogen (see section: The Blowing
Process).
3. Close the valve after pressure equalization - dismount the
hose.
4. Mount the hose on the vacuum pump outlet.
5. Mount the hose for the filling station on the valve for the
filter drier.
6. Open the valve and start evacuation.
7. After the first evacuation, close the valves at the filter drier
(9), at the vacuum pump (10), for the filling station (11)
and for the vacuum pump (12) and close the spherical valve
on the filling hose (18).
17.