Mercedes-Benz 240 D 1980 Owner's Manual page 33

The autom atic clim ate control is
designed to maintain the desired
tem perature in the vehicle interior.
Heating, cooling and air distribu­
tion (top, center, b ottom ) are con­
trolled autom atically. The blow er
speeds w ill be varied autom atically
depending on the push button set­
ting, operating and tem perature
conditions.
The autom atic climate control is
operational only if the engine is
running.
For adaptation to the w eather con­
ditions various fu nctio ns can be
selected w ith the pushbuttons. A ir
outlets 8 — 9 m ust then be adjusted
as required. Buttons 2 —
pressed only individually. The
indicator lamps in the individual
buttons come on if the buttons are
pressed and the vehicle lamps are
sw itched on.
1 Tem perature selector wheel
The desired tem perature in the
vehicle interior can be set '
w ith the selector wheel.
Norm ally only one adjustm ent
is necessary fo r the entire year.
If required to be altered, only
slight adjustm ents should be
made to this tem perature
setting.
2 "O FF" button:
S w itching o ff the autom atic
climate control.
S im ultaneously the fresh air
supply to the vehicle interior is
cut off. This position can be
briefly selected in the case o f
odorous or dust annoyances or
w hen passing th rough an a u to ­
m atic car wash.
6 can be
3 "A U T O -LO " button:
Normal vehicle operation.
This setting w ill provide heating
or cooling of the vehicle's
interior depending on the selec­
tor wheel setting and the o u t­
side temperature. If heating is
required, the fresh air supply
and the blow er w ill remain in
the o ff position until the
A u to m a tic C lim ate C ontrol
engine cooling w ater is slightly
warm ed up. Only then w ill
w arm air enter the interior o f
the vehicle and be distributed
m ainly to the fo o tw e ll outlets.
A small am ount o f air is directed
to the w indshield to ensure
defogging under normal w ea th ­
er conditions. For the defogging
o f th e side w indow s, air can be
diverted from the side outlets 9.
The center outlets 8 remain
closed during heating operation.
If cooling o f the interior is re­
quired, the blow er w ill start
im m ediately regardless of
engine tem perature. The air is
routed via center outlets
the vehicle's interior and addi­
tionally via the side outlets 9.
No air is allowed to flo w to the
w indshield and to the footw ell.
The blow er speed w ill be auto­
m atically reduced in several
steps in the heating or cooling
cycle as the interior tem per­
ature approaches the pre­
selected tem perature on the
tem perature wheel 1 .
8 into