CITROEN CX Series - Page 362

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6 OPERATION
N°
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Operating principle
Both
electric
fans (12)
and
(14)
cooi
the engine
coolant in
the radiator.
Electric
fan
(14)
cools
the
condenser
when the
compressor
expels
the air-conditioning
cooling fluid
under pressure.
Simultaneous
supply
to fans
(12)
and
(14):
This is carried
out by means of contacts
in
relays
(1)
and
(9). The How
of
current
in
the enerqizinq
winding
of
relays
(1
)
and
(9) therefore
operates
both
electric
fans simultaneously.
The relay
windings
are supplied when
-
ignition is
switched on
-
thermal
switch
(13)
controlled by the
coolant
temperature
in the radiator
is off.
Supply
to supplementary
electric
fan
(14)
olone
This is carried
out
by contacts
in
relay
(8) when
its
energizing
wind
ing is supplied.
The relay
winding
is supplied when
-
ignition
is On
-
uir-conditioning
switch (4)
is
off
-
contact
on the ambient
temperature
thermostat
(3)
is
closed.
Supply
to the
electro-magnetic
clutch for
the compressor
The
clutch suppiy
is
a
function
of
the
following
-
Air-conditioning
switch (4)
-
Ambient
temperature
thermostat
(3)
-Highpressure
switch (5).
Supply to the
blower
(15):
This
is
carried
out by res
istors (16)
of
the
rheostot.
This rheostat
controls
the speed
of the
blower
(
3-speed
and
consequently, the
volume
of dispiaced
air.
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