Lotus Elise Service Notes page 454

Lotus Service Notes
Section PH
Air Distribution Airflow
The distribution control knob provides four set-
tings as follows:
Face Level:
Turned fully counterclockwise, all the airflow is
directed to the four face level vents, each of which
may be individually adjusted via a volume con-
trol thumbwheel and direction control knob.
No solenoids are energised. When engine
vacuum is generated, the screen flap closes.
Footwell:
At this position, air is supplied to the footwell vents
and to the face level vents. For maximum footwell
ventilation, close off the face level vents via their
individual thumbwheels.
Footwell solenoid energised; vacuum opens
footwell flap.
Footwell & Screen:
At this position, air is supplied to the windscreen,
footwell, and face level vents. Each of the wind-
screen outlet vents may be manually rotated and
directed as required.
To boost airflow from the windscreen and footwell
vents, close off the face level vents using their
individual thumbwheels.
Footwell and screen solenoids energised; vacuum
opens footwell flap; vacuum shut off from screen
flap which opens.
Windscreen:
At this position, airflow is directed to the wind-
screen and face level vents. Each of the wind-
screen outlet vents may be manually rotated and
directed as required.
For maximum defrost performance, select full
heat and fan speed, and close off the face level
vents using their individual thumbwheels. Turn
the screen vent vanes to align with the screen,
and open to about 45° angle to aim at the glass.
Screen solenoid energised; vacuum shut off from
screen flap which opens.
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2000 / 04