Porsche 928 S 1986 Driver Manual page 41

Important:
• The air conditioner only functions with
the engine running.
• With the air conditioner on, at least one
air outlet grille must be open since other-
wise the evaporator may ice up. The con-
densation which forms during operation
escapes through openings on the un-
derside of the vehicle.
• The air conditioner must be operated
for a short period at least once a month
so that the seals and bearings of the
compressor as well as the expansion
valve are lubricated. This is especially
important during the cold season when
the air conditioner ist not required. The
outside temperature must be above 0° C.
• Should the air conditioner become de-
fective, e.g. if there is no cold air despite
the system being switched on, switch
the air conditioner off and proceed im-
mediately to an authorized garage.
The following controls enable you to ideally
adapt the system to your personal require-
ments.
Temperature slide
The temperature of the air entering the pas-
senger compartment can be infinitely variably
raised by moving the slide to the right. The
value set on the temperature scale corres-
ponds to an average passenger compartment
temperature.
In program positions and
automatic temperature control.
Blower switch
To provide air circulation even when the ve-
hicle is standing still or at low speeds the blower
fan runs at low speed even when the switch is
in the 0 position.
The air flow can be controlled by turning the
blower switch from speed 0 to 4.
Program slide
An automatically controlled air conditioner
offers several programs for meeting your in-
dividual requirements:
Outside air intake and blower switched
off. For brief use only, e. g. when there is
an odour nuisance from traffic in front.
Air stream via side and centre vents
only.
there is no
Air stream into the footwells. The side
and centre vents can be open if desired.
Air stream into the footwells and head
area. The side and centre vents can be
opened if desired.
Air stream to windscreen. The side and
centre vents can be opened if desired.
Defrost position: provides fastest pos-
sible defrosting of the iced or misted-up
windscreen and side windows. With this
program the maximum heating effect
and highest blower fan speed are
switched on automatically and the full
air flow is directed to the windscreen
and the side vents. At temperatures
above 0° C the air is additionally dried
by the air conditioner which switches
on automatically.
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