1982 Citroen CX radiator

Downloaded from www.Manualslib.com manuals search engine OPERATION No MA. 230.0 : M k
08 ,ri,y r,i, //I<’ roo/i,ip c, s,w,,.
Op. MA. 230.0 1 FILLING THE WATER SYSTEM
IMPORTANT
: Core must be token to protect alternator from water whenever working on cooling systems fitted close to this unit.
Two operations are involved
- Complete filling i roolir~g c~s~<,v, nvd bvolvr ,,ail ,
- Partial filling I roolir,p ~J~S/IW, oul~* 1
NOTES
Draining the radiator and the engine unit does not involve draining the heater unit.
- De-aeration of the system is only operative when the thermostat is open 1 v,rgiur wnnu J.
I. COMPLETE REFILLING 1. Remove
spare wheel
.
2. Open heater control to fullest extent ( inside
vehicle 1.
3. Unscrew the two bleed screws ( 1 ) and ( 2 ).
Place a tronsporent tube
200 mm in length
over each screw in order to ovoid the escape
of the liquid.
4. Disconnect the heater outlet hose and pour in
approximately 0.6 litre of cooling liquid.
Reconnect tube ( 4).
5. Fill remainder of circuit slowly through the
header tank and close bleed screws I 1) and
( 2) after releasing air
6. Remove transparent tubes ( 3) and close header
tank.
NOTE : To induce primitzg o/pum~,~~~sseri;irrp
o/ circuit I I bar 1 f 14. 5 psi ) may b+ r~i/vrtd:
(11 through overflow orifice ( 5)
I Vehicles -2/ 1976 ).

Downloaded from www.Manualslib.com manuals search engine 2 OPERATION No MA. 230-O : II .h’ 0, fug Ol, I/7‘, rodir,p sys/w1.
b) by replacing the header tank cap with a
flexible rocker-cover union
I V~~/7id<~S 2/ IU7h - ,
7. Run engine at approximately 2000 rpm until
electric fan (5) cut (5) in.
Then let the engine idle for about 10 mins.
Never open header tank cap while electric fan (5)
ore/is in operation.
Do not open bleed-screws ( 1 ) and (2) while engine
is running.
8. After releasing the air. water level should
stabilize in header tank. Level should be checked
when the engine is cold.
9. Fit the rubber covers cm the bleed-screws.
Replace spare wheel.
II. PARTIAL FILLING
Same operations as for total filling except that
the heater unit is not filled by outlet tube ( 3)
to the radiator.
111. FILLING AND DE-AERATING THE AUXILIARY
HEATER UNIT ON CX AMBULANCE VEHICLES
Before connecting the auxiliary heater unit water
system to the main system. the following must
be carried out :
- Fill up the auxiliary heater unit and its hoses
( with heater control open I with 1.6 litres
( 2.8 pts 1 of coolant liquid of the some type
as that used in the main
system.
- Connect all hoses. and tiqhten 011 hose clips.
-Stat engine. and wait for electric fan (5) to
to cut-in ( De-aeration time 1.’
- Check the operation of the auxilioly heater unit.
- WHEN THE ENGINE IS COLD, check the level,
and top up if necessary.

Downloaded from www.Manualslib.com manuals search engine DESCRIPTION OF COMPONENTS
1.
Battery
2. Starter
3. Anti-theft switch ignition and starting
4. Safety relay for starting and controlling the clutch electro-valve f ~/lr,c,r/(,r J
5. Clutch electro-valve ( co,/, V~IO~ J
6. Control relay for idling speeds f W//I r,~/or J
relay energized engine idling speed
- relay not energized 1 fast idling speed
7. Switch housing on gearbox ( WJ,, c,~/(,v J
8. Fast idle control relay / ~i)-c o~r/i/ir~//i,l~ 1
relay energized contact open fast idle
9. (( PIERBURG )) electro-valve for fast idle
- energized engine idle
not energized fast idle
10. I6 Amp. fuse 11.
General control relay 12.
16 Amp fuse 13.
Air blower ( tr’n~r// or c-old ) 14.
3-speed blower control
15. Regulating thermostat ( ~i,.=ror,c/i/irrr,i,l~: i
16. Air-conditioning switch 17.
Pressure switch on de-watering tank f ni,-=( or~rli/irrr/i~~~c ) 18.
Compressor clutch f nifsc o//di/io~i/l~ i 19.
Control relay for L.H supplementary electric fan (21 ) ( ~il..r~l/di/io//il/~ )
20. Control relay for electric fan (21 ) (
coolir~g o/ rficJiNlor (I nlc,r )
21. Supplementary electric fan for condenser ( ~il.~rol/ni/i~~ll/i//~ ) and water radiator ( cooling: J
22. Control relay for R.H electric fan ( 24) ( tooli~!: J
23. Thermal switch on water radiator ( (r)olir~,r~ to~trol )
24. R.H. electric fan for gearbox oil radiator and coolant radiator
25. Converter oil temperature warning lamp ( CM, c~sl~r J
26. Thermal switch for converter oil ( COMWKI~B ) KEY TO WI RING HARNESSES
No Mark
: Standard circuit (no optional equipment ) TB :
Instrument panel
Circuit for optional (( Converter - air-conditioning )) - No mark
; Converter wiring on body-shell
- CM : Converter wiring on engine

Downloaded from www.Manualslib.com manuals search engine WIRING DIAGRAM FOR ELECTRIC FAN AND AIR-CONDITIONING CONTROL
-- I’)‘(,
L64 4
41 1 1 Front harness
-
T
17
I KEY I
I I
I
Standard wiiinq I
I I
I I
I - Air-cond wiIinq, ‘- - - - - - - _-
1 i 1 1 1
/,/r/////,/,,,,/,//////~////~‘/‘~””’~”””””~””7”“““’
Earth on gearbox
Eart>, on front L H wheelarch 1.
Control relay for supplementary electric cooling fan
2. Control relay for air blower
3. Ambient temperature thermostat ( on evaporator )
4. Air-conditioning switch (on centre console )
5. High pressure switch ( on de-watering tank )
6. Electra-magnetic clutch for compressor
7. Control electro-valve for fast idle and re-cycling ram
( WEBER electro-valve )
8. Control relay for supplementary air-conditioning electric
9. Control relay for electric cooling fan 10.
Ignition coil 11.
Idle cut-off ( on carburettor ) .12.
Electric cooling fan
13. Thermal switch for electric cut-in ( on radiator )
14. Supplementary air-conditioning electric fan
15. Air blower for air- conditioning 16.
Control resistors for air-blower speeds 17.
Air blower switch ( 3-position )

Downloaded from www.Manualslib.com manuals search engine Op. MA. 510-00 b 17 WIRING DIAGRAMS’FOR COOLING FAN AND AIR-CONDITIONING SYSTEM CONTROL
SPECIAL FEATURES
From 1977 models the fast-idle electro-valve ( 9) is manufactured by 1, PIERBURG 1).
When it is not enerqized the electro-valve lets low pressure through towards the carburettor capsule (fast
idle ) contrary to the (1 WEBER )) electromvalve fitted previously.
Fitting the N PIERBURG )) electro-valve necessitates fitting a relay (8) which is enerqized when the air-
conditioning system is operating This relay, with its c( o/)t/i 1) contact cuts off supply to electro-valve (9)
which therefore produces fast idle. DESCRIPTION OF COMPONENTS :
1
- Heater relay ( .s/o~/~/Q~c/ )
2 - Air blower ( .S~n~~dnr(i i
3 - Speed control for blower ( S/nr/clnrt/ J
4 - Regulating thermostat
5 - Air-conditioning switch 6
- Pressure switch ( 01, dc,-rt,cr/t,rit,,q lnr~k ) 7
- Compressor clutch
8 - Control relay for fast idle melectro-valve
9 - Fast idle electro-valve lo-
Relay for L.H. supplementary electric fan f nip-cor/rli/ior/illS ) 1
I- Supplementary L.H. electric fan ( foolir2~~ ) 12-
Relay for L.H. supplementary electric fan ( cooli~/g ) ?3-
Control thermostat ( on radiator ) for electric fans ( Stnr~d& )
14- Relay for R.H. electric fan ( Stmzdnrrl )
15 Electric cooling fan ( Stal?dn~/ )

Downloaded from www.Manualslib.com manuals search engine AIR-CONDITIONING
CHARACTERISTICS AND SPECIAL FEATURES OF THE AIR-CONDITIONING SYSTEM
The air-conditioning system includes the refrigeration and the heating of the air drawn into the passenger compart-
ment. REFRIGERATION
This allows the air in the passenger compartment to be cooled, while at the same time reducing its dampness (and
therefore the misting up of the glass ) HEATING
It is of the (( FROID - 15)) or (( FROID - 20 )) type
1 The air is blown around the channels of a radiator supplied by water from the engine cooling system.
&
co
5
3
t
E REFRIGERATION
E I. CHARACTERISTICS
ASPERA FRIGO type HG 700 or
Compressor
1 .
SANKYO * type SD 508
De-watering tank . SINGER
Condenser _.. ._..: _._...... . . . . . . . . . . . CHAUSSON
Evaporator-blower , SOFICA
Flexible hoses ..,_.,....,............................................................................... STRATOFLEX and RANCO
Refrigerating fluid . R. 12 Weight
of refrigerating fluid _..._.._._._..,_..__.................................................... 1 kg ( 2.2 lbs )
Oil for lubricating compressor TOTAL LUNARIA 25 or SUNISO No. 5
or TEXACO CAPELLA (( E )) grade 500
Quantity of oil for lubricating compressor ,
280 g i.e. a height of 21 to 29 mm
f
CJSCC,~~ ior SANKYO UIVI~WSSO~ J
* Only fitted on vehicles fitted with converter and air-conditioning option.

Downloaded from www.Manualslib.com manuals search engine II. OPERATING PRINCIPLE
The refrigerating system has four main components
- the compressor ( 4)
- the condenser ( 7)
- the pressure release valve (3 i
*
the evaporator ( 1 )
The refrigerating fluid used is the F. 12
L.64.1 a
Compressor
(4) - Manufacturer ASPERA FRIGO. type HG 700 ( or SANKYO type SD 508 on EMBAUT CLIMAT )
ASPERA twin-cylinder or
SANKYO five-cylinder rotary 1 Fitted onto the gearbox by means of a mounting bracket
The compressor circulates the refrigerating fluid draws in the fluid which is in a low-pressure vapour state
compresses it ( which increases its temperature ) and expels it into the condenser.
The condenser is driven by the engine via the water pump by two trapezoidal belts ( ASPERA ) or one trapezoidal
belt ( SANKYO ).
An electro-magnetic clutch is fitted to the compressor pulley. Its operation controlled by a switch on the centre
console is intermittent due to the presence of an ambient temperature thermostat ( 2 ) which is not adjustable, and
which senses the temperature near the evaporator cooling fins.
In case of excessive pressure in the return circuit, a pressure switch (6) opens the supply circuit to the compressor
clutch.
Condenser (7 ) - Manufacturer CHAUSSON
It allows the fluid to condense and to release its latent heat to the outside air circulating around the fins. It is
secured to the front L.H. side of the engine cooling radiator At the condenser outlet, the fluid is in the high-
pressure liquid state. The fluid flows through the tank ( 5) ( which contains a dehydrating filter ) and flows
towards the pressure release valve.
A 5-blade electric fan accelerates the circulation of air around the condenser fins.
De-watering tank .( 5) - Manufacturer : SINGER
It contains a dehydrating filter element, and is fitted with a visible level indicator, which allows the amdunt .and
state of the fluid to be checked, and a high-pressure switch (6).
The de-watering tank is fitted on the front panel by means of a mounting bracket at the rear L.H. side of the
engine cooling radiator.
Pressure-release valve (3) : It is incorporated in the heater unit, and regulates the output of fluid towards the
evaporator.
Evaporator ( 1) - Manufacturer SOFICA
The air flowing through the evaporator releases its calories, ‘which will cause the low pressure fluid to be
transformed into vapour.
It is incorporated in the heater unit upstream from the heater radiator.

Downloaded from www.Manualslib.com manuals search engine III. AIR CIRCUIT
Heater
radiator
El
E2
Air
blower
I-
FROID - 20
__------- ----- _; Al
E2 : Air intake for recycling in passenger compartment, on RH side of scuttle panel.
Outlets for regulated air in the passenger compartment :
Sl
: Dashboard air vents ( LH and RH )
52 : Air vents on centre console
Air intakes for blower ;
El : Exterior intake on bonnet
53 : Lower front heater unit outlets ( LH and RH )
54 : Rear outlet on centre console
55 : De-misting and de-frosting of windscreen
56 : Centre outlet on dashboard
Distribution of regulated air :
Vl
: Distribution flap between outer and inner air-intakes ( controlled by C 1
V2 : Flap for cutting off outlets S3 -S 4 - S5 - S6 ( controlled by C 2 )
V3 : Distribution flap between outlets S3 - S4 and S5 - S6 ( controlled by C 2
V4 : Distribution flap between outlets S5 and S6 (controlled by a lever on the left of the centre outlet on the
dashboard ).
V5 : Cut-off flap for outlet S6 ( controlled by ‘a lever on the centre outlet on the dashboard )
V6 : On vehicles fitted with the u FROID - 20 )I heater unit
Distribution flaps for outlets Al and A2 at outlets Sl ( controlled by a lever under the side vents ),