Porsche 928 - WORKSHOP MANUAL 1977 Workshop Manual page 436

87
Air Conditioner 928
CHECKING FLAP POSITION PROGRAM Flap A - recirculating air
Flap C - closed
Flap D - closed
Flap E - open
Water valve - closed
3
1 - Switch for fresh-air blower
2 - Slide control for temperature
adjustment
3 - Slide control for air
distribution
Testing preconditions:
Vacuum system leaktight and
depressurized.
Switch ignition on. Open central
vent.
l.Set slide 2 to max. cooling out-
put. Set slide 3 to "Off".
The positions of the flaps must be
as follows:
2.Set slide 3 for air supply to
central vent.
Flap A - fresh air.
The other flaps remain at
positions as for check 1.
3.Set slide 3 for air supply from
bottom vent.
Flap D - opens.
4.Set slide 3 for air supply from
upper/lower vents.
Flap C opens.
5.Set slide 3 for air distribution
from top vent.
Flap D closes.
a
a
a7 - 108
Checking Flap Position Program
Printed in Germany