DACIA SOLENZA 2004 Repair Manual

62
AIR CONDITIONING
62 - 7
Particles filter
DISMOUNTIN G
Dismount the protector of the climate con-
trol box.
Remove from clips the wiring towards
blower casing from the D.S.A.F. Dismount then the particles filter protec-
tion cap from the attachment screw by slid-
ing it towards front of the vehicle.
Extract the particles filter, by easy folding
it.
R EMOU NT I NG
Remount in i ts place the part icles filter per-
forming the same dismounting operations.
REMARK :
Pay attention at the m ounting direction
of the fi lter the two arrows (A) must be
lined up.
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62
AIR CONDITIONING
62- 8
Cold air blowing device (DSAF)
TIGHTENING MOMENTS (daNm)
Attachments screws of the expansion vale on the evaporator 0,6
Pipes attachment nut on evaporator 0,57
T ightening screw of the pipe attachment clamp on compressor 1,2
Pipes attachment nut on filter reservoir 1,4 – 2
P ipe attachment nut on condenser ∫ “ 1,8-2,2
P ipe attachment nut on condenser 5/8 “ 1 – 1,4
Pressure controller 0,9 ± 0,1
DSAF is the heat-e xtracting component
from cockpit and is mounted in the climate
maintenance box. In order t o cool the cockpit, the warm a ir
must be ab sorbed and re di st ri but e d t he
“cooled“ a ir. T he warm air is goi ng over t he
evaporator to, which is transmitting part of the
temperature, this one being gradually reduced. In the same time, the refrigerant fluid which
is passing through the evapora tor piping is
absorbing the heat from the air going over the
evapora t or a nd a t t he same pre ssure , i s
transformed from fluid to vapors. When coming
out from evaporator, the refrigerant fluid is in
vapor condition.
DISMOUNTIN G
Drain the AC unit.
Disconnect the battery.
Dismount :
- climate control protector;
- climate control box gasket;
- expansion vessel;
- engine air filter
Detach the front wiring from attachment clips
on the climate maintenance box closing plate.
Di smount the c limate maintenance box
closing plate. Dismount the nut (1) of the pipes attachme nt
clamp (2) on thermostatic expansion valves (3).
Mount protectors at the dismounted pipes.
Dismount the attachment screws (6 ) of the
thermostatic expansion valve.
Release t he thermostatic expansion valve
and mount protectors.
Extract the sealing gasket (7).
Mount protectors at the evaporator’s pipes (8).
23
1
4
910
7
5
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62
AIR CONDITIONING
62 - 9
Cold air blowing device (DSAF)
Disconnect the climate maintenance blower
connector ( 11) (pull the red part towards arrow
A).
Di smount the attachment screws of the
steering wheel half-case and release from clips
detaching. Dismount the upper part dashboard and
release it from clips.
Dismount the radio-cassettes player. Disconnec t t he c entra l l ocking swi tch
connector (if the vehicle is provided with central
locking). Dismount the right air vent.
Dismount the DSAF attachment screws on
cowl panel and a ttachment screws on climate
maintenance box and release it.
Di smount the attachment screws ( 9) o f the
connection pipe ( 10) on the distributor of RACV
AC-ventilation air and release it.
REMOU NT I NG
Perform the dismounting operations in the
reverse order, taking into consideration that filter
reservoir is to be mounted the last. Fill the air conditioning unit with refrigerant
fluid HFC 134a (0,600 Kg).
86
11
Connector
Pin Denomination 1 Control + air recycling
2 Control + air recycling
3 Blower control speed 1
4 Blower control speed 2
5 Blower control speed 3
9 Climate control blower speed signal
10 Supply + after contact
11 Supply + after contact
12 Blower control speed 4
14 Mass
15 Mass
915
5 1
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62
AIR CONDITIONING
62- 10
DISMOUNTING
Disconnect the battery.
Drain the air condiotioning unit to the station
by recovering the refrigerant fluid
Di smount it from screws (6) and release the
cold air-blowing device (2) from the climate con-
trol box (see D.S.A.F. dismounting-remounting)
Di sconnect and release t he two attachment
screws ( 3) of the air blower.
Dismount the resistance’s assembly (7)
S upply the ge ar motor in order to bring t he
recycling control flap in vertical position.
Dismount the attachment screw (1) of the air
filter protection cap (9) and release the filter (8).
Di smount the attachment scre ws (4) of the
D.S .A.F. cases and release the e vaporator ( 5).
REMOU NT I NG
Perform the dismounting operations in the
reverse order. Vacuum then charge the air conditioning
circuit with refrigerant fluid HFc 134a by
means of the charging station.
Check the good oper ation of t he air
conditioning system.
NOTÃ:
Ga rniturile autoadezive al e D.S.A.F.
vor fi înlocuite cu altele noi.
Evapor ator
3
4
56
2
1
9
8 7
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62
AIR CONDITIONING
62 - 11
Control panel
The dismounting – remounting operation has been described in chapter 61 “ Climate control”.
Connector (3)
Pin Denomination
1Free
2Free
3Free
4Free
5Free
6Free
7+ parking lights
8 Mass
9 Mass
10 Supply + after contact
11 Supply + after contact
12 Air conditioning control
13 Climate control blower speed signal
14 Control + air recycling
15 Control - air recycling
Connector (6)
Pin Denomination A1 Control + blower speed 4
A4 Supply + after contact
A5 Supply + after contact
B1 Control + blower speed 3
B4 Control + blower speed 2
B5 Control + blower speed 1
1
5
A
B
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62
AIR CONDITIONING
62- 12
Compressor
FUN CTION
The compressor is suction the vapors com-
ing from evaporator at low temperature and
pressure, compress them and transmit the gas
at high temperature and pressure towards con-
denser. The refrigerant fluid in entering in condenser
in vapors condition, at high temperature and
pressure, where, by condensing, is transmittin g
in the external environment the abstracted heat.
At condenser exit, the refrigerant fluid is in
liquid condition, at high pressure and tempera-
ture.
DISMOUNTIN G
Drain the refrigerant c ircuit t o a charging
station.
Disconnect the battery.
Disconnect the supply wiring connector of
the compressor clutch.
Dismount the screw of attachment clamp
of the refrigerant pipes on compressor.
Cover the open piping with protectors.
Dismount the compressor-driving belt.
Dismount the four compressor attachment
screws.
Extract the compressor.
REMOU NT I NG
In case compressor is replaced, this one is
delivered filled with oil. Position the compressor with the filling cap
upwards. Mount the compressor attachment screws.
Tighten the compressor attachment screws
to the required moment of 2,1 daNm.
Remount the two refrigerant pipes and
tighten t he attachment clamp screw to the re-
quired moment of 1,2 daNm.
Mount the compressor -driving belt and ten-
sion it by acting upon the screw ( 1) according
to the method descri bed in chapter 07 “ Ac-
cessories belts tensioning”.
The tensioning values are :
150 - 155 Hz - compressor belt;
214 – 230 Hz – DA pump/compressor belt.
Connect the supply wire connector of the
compressor clutch. Vacuum and fill the circuit with refrigerant
fluid HFC 134a , by means of the charging sta-
tion (see chapter 62 “Draining – Filling unit
refrigerant circuit” ).
REMARK :
Before mounting c heck t he condition
of t he gaskets and lubri cate them wi th
compressor oil PAG SP 10.
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62
AIR CONDITIONING
62 - 13
Condenser
SPECIAL TOOLS
MOT 453Hoses clamp
MOT 1202-01 Elastic clips pliers
The condenser is placed on the c ooling
radiator, ensuring the exhaust of the refrigerant
heat accumulated at compression.
DISMOUNTING
Disconnect the battery.
Drain the AC unit and recover t he oil and
the refrigerant fluid at the charging station.
Dismount the front grill.
Dismount the air filter inlet pipe.
Dismount the engine fan off the radiator.
Disconn ect the pipes from the condenser and
immediately close the disconnected pipes ends
and the condenser connections with protection
caps in order to avoid humidity and impurities
penetration in circuit.
Clamp the hoses from the radiator by means
of the MOT 453 device.
Di smount the hoses from the radiator by
means of the elastic clips pliers MOT 1202-01 ,
recovering the cooling fluid.
Dismount the radiator side attachment
supports on the radiator upper cross beam and
release the radiator together with the condenser.
Re l e a se t he condense r f rom t he four
attachment screws on the radiator.
REMOU NT I NG
Perform the dismounting operations in the
reverse order.
Tighten to t he required m oment the pipes
nut s .
- thread 3/4 “ 1,8 – 2,2 daNm
- thread 5/8 “ 1,0 – 1,4 daNm
Fill the AC unit with refrigerant fluid HFC
134a (0,600 Kg) by means of the charging unit.
Check for refrigerant fluid leaks.
Fill and purge the cooling circuit.
Check the good operation of the AC unit.
REMARK :
When mounting, line up the marks of
the hoses and mating parts .
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62
AIR CONDITIONING
62- 14
Pressure controller
LOCATION
Pressure controller (1) is located on the high-
pressure pipe, near the dryer reservoir.
FUNCTION
The pre ssure control ler is perm anently
informing UCE (electronic control unit) about
the circuit pressure. Subject to pressure value in the high-
pressure circuit, UCE is commanding:
- circuit break ( by uncoupling the compressor
clutch) when the pre ssure in the c ircuit is
decreasing under 1,96 + /-0,2 bar a nd clutch
coupling when the pressure is over 2,16 +/-
0,2 bar;
- circuit break when the pressure in the circuit
is over 31,4 +/- 2 bar and compressor clutch
coupling when the pressure is decreasing under
25,5 +/- 2 bar;
- engine fan starting on second speed, when
the pressure is over 17,7 +/- 1 bar and engine
fan stopping when the pressure is decreasing
under 13.7 +/- 1 bar.
REPLAC EMEN T
The pressure controller replacement does
not imply the draining of the refrigerant circuit. Disc
onnect the pressure controller
connector.
Replace the pressure controller.
When m ounting, lubricate the pressure
controller sealing gasket with oil PAG SP 10.
T ighten the pressure controller to the required
moment of 0,9 +/- 0,1 daNm.
Check for refrigerant fluid leaks.
1
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62
AIR CONDITIONING
62 - 15
Filter reservoir
Filter reservoir (1) is attached by means of a
support collar on the right longitudinal girder.
Its function in the AC unit operation is : -filtering the refrigeran t fluid;
-r etaining the humidity from the unit;
-f orming of a buffer stock of refrigerant
fluid.
The particles interception is necessary because
it might block the thermostatic expansion vale
operation or produce compressor mobile parts
wear or gripping. The filter reservoir is not to be repaired.
DISMOUNTIN G
Disconnect the battery.
Drain the AC unit.
Dism ount t he pi pi ng a nd pro t e c t wi t h
protection caps in order to avoid humidity
penetration. Dismount the filter reservoir off the support
collar and release it.
REMOU NT I NG
Perform the dismounting operations in the
reverse order. Fill the AC unit with refrigerant fluid HFC
134a (0,600 Kg) by means of the c harging
station.
Check for refrigerant fluid leaks.
When replacing the filter reservoir, fill in
the circuit with 15 ml of oil PA G S P 10 .
REMARK
The tightening required moment of
the pipes nuts at the filter reservoir is of
1,4 –2 daNm.
The required tightening moment of
the attachmen t screw of the filter
re servoir support is of 0,7 daNm.
1
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62
AIR CONDITIONING
62- 16
Unit piping
TIGHTENING MOMENTS(daNm)
Pipe attachment nut 3/4’’on condenser 1,8-2
Pipe attachment nut 5/8’’on condenser 1-1,4
P ipes attachment screw on compressor 1,2
Pipes attachment nut on evaporator 0,57
The AC unit piping is ensuring the refrigeran t
fluid circulation between the unit components.
When piping is replaced, check the existence
of the protective caps, the l ubrication of the
connections and gaskets with compressor oil.
The unit fillin g and draining valves are placed
on the c ompressor piping a nd they different
diameters, so that they can not be reversed.
COMPRESSOR – EVAPORATOR
LO W PRESSURE PIPE
DISMOUNTIN G
Disconnect the battery.
Drain the AC circ uit by means of the
charging unit.
Dismo unt :
-atta chme nt nu t ( 9) of t he pi pe s
tightening clamp on evaporator ( 8) (located in
DSAF); -attachment screw ( 6) of the pipes
tightening clamp on compressor ( 5);
- attachment screw (7) of pipes clamp.
Release the pipe ( 10) and mount protection
caps at its extremities, at evaporator and
compressor.
R EMOU NT I NG
Perform the dismounting operations in the
reverse order.
Replace the gaskets from pipe’s extremities.
Before m ounting, t he ga skets are to be
lubricated with oil PAG SP 10.
In case pipe ( 10) is replaced, add 10 ml of
oil PA G S P 10, and in case of its breaking,
100 ml.
COMPRESSOR – CONDENSER
HIGH PRESSURE PIPE
DISMOUNTIN G
Disconnect the battery.
Drain th e AC circu it by means of the
charging unit. Dismo unt :
- front grill;
-atta chme nt sc rew (6) of t he hi gh
pressure pipe (4) on compressor (5);
-pipe attachment nut on condenser ( 12);
-pipe att achment clamp ( 11) on
condenser.
7
1
10
9
13
3 4
12 6
5
11 8
2
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