Porsche 928 ST1991 Owner's Manual page 53

Additional vaporizer for increased
cooling output
In vehicles with increased cooling unit out-
put there is an additional vaporizer with a fan
installed instead of the floor console.
When the air conditioner switch is pressed
in, and the air conditioner is turned on, the
back vaporizer can be switched on by turn-
ing the button at the left in the center console
to the right. Fan speeds from 1 to 3 can be
adjusted.
52
Turning the button at the right to the right in-
creases the cooling output from the rear vap-
orizer.
The inside air is drawn in through the rear
grid, cooled, and circulated in the floor area.
If the AC switch has not been pushed in, only
circulation of the air is provided.