2009 RENAULT TWINGO RS Air Conditioning Workshop Manual

62A-24
AIR CONDITIONING
Expansion valve: Removal - Refitting
AIR CONDITIONING or CLIMATE CONTROL
62A
-the air filter box (see Air filter unit: Removal - Re-
fitting) (12A, Fuel mixture).
aRefit:
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the wiper arms (see Windscreen wiper arm: Re-
moval - Refitting) (85A, Wiping - Washing).
aConnect the battery (see ) (80A, Battery).
aConsult the amount of refrigerant and oil required
before filling the air conditioning circuit (see 62A, Air
conditioning, Air conditioning: Parts and con-
sumables for the repair, page 62A-2) .
aFill the refrigerant circuit using a refrigerant charg-
ing station (see 62A, Air conditioning, Refriger-
ant circuit: Draining - Filling, page 62A-8) .
aCheck for leaks (see 62A, Air conditioning, Refrig-
erant circuit: Check, page 62A-7) .
aCheck that the air conditioning system is operating
correctly (see 62A, Air conditioning, Air condi-
tioning: Check, page 62A-4) .

62A-25
AIR CONDITIONING
Evaporator: Removal - Refitting
AIR CONDITIONING or CLIMATE CONTROL
62A
REMOVAL
OPERATION FOR REMOVAL OF PART
CONCERNED
a
aRemove the distribution unit (see 61A, Heating,
Distribution unit: Removal - Refitting, page 61A-
27) .
REFITTING
REFITTING OPERATION FOR PART CONCERNED
aRefit the distribution unit (see 61A, Heating, Distri-
bution unit: Removal - Refitting, page 61A-27) . Note:
The evaporator is supplied already assembled in
the distribution unit.

62A-26
AIR CONDITIONING
Evaporator: Cleaning
AIR CONDITIONING or CLIMATE CONTROL
62A
CLEANING
I - CLEANING PREPARATION OPERATION
aRemove the cabin filter (see 61A, Heating, Cabin
filter: Removal - Refitting, page 61A-6) .
II - OPERATION FOR CLEANING PART
CONCERNED
aRemove any foreign matter (leaves, insects, etc.)
from the cabin filter housing.
a
Apply AIR CONDITIONING CLEANER using an ex-
tension piece. The end of the extension piece must
be positioned at the base of the evaporator.
aSpray the entire contents of the can.
aLeave the product to work for 15 minutes.
aRun the fan assembly very slowly for 5 minutes.
III - FINAL OPERATION.
aRefit the cabin filter (see 61A, Heating, Cabin filter:
Removal - Refitting, page 61A-6) . Note:
For the part number for the air conditioning
cleaner (see Vehicle: Parts and consumables
for the repair) (MR 411, 04B, Consumables -
Products).
WARNING
Do not spray the cleaner via the air inlet, as this
could damage the fan assembly.

62A-27
AIR CONDITIONING
Expansion valve - intermediate pipe connecting pipe at the expansion valve outlet: Removal - Refitting
AIR CONDITIONING or CLIMATE CONTROL
62A
REMOVAL
I - PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (MR 411, 02A, Lifting equip-
ment).
aDrain the coolant circuit using a refrigerant charg-
ing station (see 62A, Air conditioning, Refriger-
ant circuit: Draining - Filling, page 62A-8) .
aDisconnect the battery (see ) (MR 411, 80A, Bat-
tery).
aRemove:
-the wiper arms (see Windscreen wiper arm: Re-
moval - Refitting) (MR 411, 85A, Wipers - Wash-
ers),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (MR 412, 56A, Exterior
equipment),-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (MR 412, 56A, Exterior equipment).
II - REMOVAL OPERATION FOR PART
CONCERNED
aRemove the « dehydrator reservoir - expansion
valve » and « expansion valve intermediate pipe »
(see 62A, Air conditioning, Dehydrator reservoir
- expansion valve connecting pipe: Removal -
Refitting, page 62A-28) connecting pipe assembly.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit the « expansion valve - intermediate pipe » -
« expansion valve - dehydrator reservoir » (see
62A, Air conditioning, Dehydrator reservoir - ex-
pansion valve connecting pipe: Removal - Refit-
ting, page 62A-28) connecting pipe assembly.
II - FINAL OPERATION.
aRefit:
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (MR 412, 56A, Exterior equipment),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (MR 412, 56A, Exterior
equipment),
-the wiper arms (see Windscreen wiper arm: Re-
moval - Refitting) (MR 411, 85A, Washing - wip-
ing).
aConnect the battery (see ) (MR 411, 80A, Battery).
aConsult the refrigerant and oil quantity values before
filling the circuit (see 62A, Air conditioning, Air
conditioning: Parts and consumables for the re-
pair, page 62A-2) .
aFill the refrigerant circuit using a refrigerant charg-
ing station (see 62A, Air conditioning, Refriger-
ant circuit: Draining - Filling, page 62A-8) .
aCheck that the air conditioning system is operating
correctly (see 62A, Air conditioning, Air condi-
tioning: Check, page 62A-4) .
aCheck for leaks (see 62A, Air conditioning, Refrig-
erant circuit: Check, page 62A-7) . Equipment required
refrigerant charging station
IMPORTANT
Consult the safety and cleanliness advice and oper-
ation recommendations before carrying out any
repair (see 62A, Air conditioning, Air condition-
ing: Precautions for the repair, page 62A-1) .
Note:
Use blanking plugs for the fuel circuits with part
numbers 77 01 208 229 or 77 01 476 857 to plug
any openings exposed to the open air. They must
be clean. Do not use plugs which have already
been used to plug a fuel circuit.
Note:
The « expansion valve - intermediate pipe » and
« expansion valve - dehydrator reservoir » connect-
ing pipes cannot be separated.
WARNING
Consult the device's operating manual to avoid
incorrect use.

62A-28
AIR CONDITIONING
Dehydrator reservoir - expansion valve connecting pipe: Removal - Refitting
AIR CONDITIONING or CLIMATE CONTROL
62A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aDrain the refrigerant circuit using a refrigerant
charging station (see 62A, Air conditioning, Re-
frigerant circuit: Draining - Filling, page 62A-8) .
aDisconnect the battery (see ) (80A, Battery).
aRemove:
-the wiper arms (see Windscreen wiper arm: Re-
moval - Refitting) (85A, Wiping - Washing),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment). Special tooling required
Mot. 1410Set of refrigerant pipe union
disconnection sockets.
(dimensions in inches): 5/16,
3/8, 1/2, 5/8, 3/4, 7/8.
Equipment required
refrigerant charging station
compressed air nozzle
IMPORTANT
To avoid all risk of damage to the systems, apply
the safety and cleanliness instructions and opera-
tion recommendations before carrying out any
repair:
- (see 62A, Air conditioning, Air conditioning:
Precautions for the repair, page 62A-1) ,
- (see Vehicle: Precautions for the repair) (01D,
Mechanical introduction).
WARNING
To prevent moisture from entering the system,
place plugs on the cold loop components which are
open to the air.
WARNING
In order to avoid any refrigerant leaks, do not dam-
age (deform, twist, etc.) the pipe.
Note:
Use blanking plugs for the fuel circuits with part
numbers 77 01 2008 229 or 77 01 476 857 to plug
any openings exposed to the open air. They must
be clean. Do not use any which have already been
used to plug a fuel circuit.
WARNING
To prevent the surrounding components from over-
heating, do not damage (tear, pierce, bend, etc.) a
heat shield.
Any damaged heat shields must be replaced.
Note:
The « expansion valve - intermediate pipe » and
« expansion valve - dehydrator reservoir » connect-
ing pipes cannot be separated.
WARNING
Consult the device's operating manual to avoid
incorrect use.

62A-29
AIR CONDITIONING
Dehydrator reservoir - expansion valve connecting pipe: Removal - Refitting
AIR CONDITIONING or CLIMATE CONTROL
62A
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove the nuts (1) from the connecting pipe brack-
et.
aMove aside the connecting pipes on the body.
aUncouple the « expansion valve - intermediate
pipe » connecting pipe from the « compressor - in-
termediate pipe » connecting pipe using tool (Mot.
1410) at (2) .aRemove the bolts (3) from the expansion valve con-
necting pipes.
aRemove the connecting pipes from the expansion
valve.
aInsert the blanking plugs.
aRemove:
-the air filter unit (see Air filter unit: Removal - Re-
fitting) (12A, Fuel mixture),
-the upstream oxygen sensor (see Oxygen sen-
sors: Removal - Refitting) (17B, Petrol injection).
aDisconnect the air temperature sensor.
121180
121178
D4F, and 780
K4M

62A-30
AIR CONDITIONING
Dehydrator reservoir - expansion valve connecting pipe: Removal - Refitting
AIR CONDITIONING or CLIMATE CONTROL
62A
aRemove:
-the bolts (4) from the bulkhead heat-resistant pro-
tectors,
-the bulkhead heat-resistant protectors (5) .aRemove the bolt (6) from the « dehydrator reservoir
- expansion valve » connecting pipe on the dehydra-
tor reservoir.
aSeparate the « dehydrator reservoir - expansion
valve » connecting pipe from the dehydrator reser-
voir.
aInsert the blanking plugs.
aRemove all of the « dehydrator reservoir - expansion
valve » and « expansion valve - intermediate pipe »
connecting pipes.
REFITTING
I - REFITTING PREPARATION OPERATION
a D4F, and 780 – K4M
123903
123908
121174
WARNING
Do not remove the blanking plugs from each
component until the last moment.
Also, do not remove the components from their
packaging until they are to be fitted to the vehi-
cle.

62A-31
AIR CONDITIONING
Dehydrator reservoir - expansion valve connecting pipe: Removal - Refitting
AIR CONDITIONING or CLIMATE CONTROL
62A
aClean the surface and seal of the pipe using EN-
GINE CLEANER (see Vehicle: Parts and con-
sumables for the repair) (04B, Consumables -
Products).
aUse a compressed air nozzle to blow on the sur-
face and the seal of the connecting pipe.
aLubricate the surface of the connecting pipe and the
seal with air conditioning oil (see 62A, Air condi-
tioning, Air conditioning: Parts and consum-
ables for the repair, page 62A-2) .
aRemove the blanking plugs.II - REFITTING OPERATION FOR PART
CONCERNED
aRefit the assembly of the « dehydrator reservoir - ex-
pansion valve » and « expansion valve - intermedi-
ate pipe » connecting pipes.
aFit:
-the « dehydrator reservoir - expansion valve » con-
necting pipe on the dehydrator reservoir,
-the connecting pipes on the expansion valve.
aCouple the « expansion valve - intermediate pipe »
connecting pipe to the « compressor - intermediate
pipe » connecting pipe.
aRefit:
-the bolts of the connecting pipes on the expansion
valve,
-the bolt of the « dehydrator reservoir - expansion
valve » connecting pipe on the dehydrator reser-
voir.
aFit the connecting pipes on the body.
aRefit the connecting pipe bracket nuts on the body.
III - FINAL OPERATION
aRefit the bulkhead heat-resistant protectors.
aRefit:
-the upstream oxygen sensor (see Oxygen sen-
sors: Removal - Refitting) (17B, Petrol injection),
-the air filter box (see Air filter unit: Removal - Re-
fitting) (12A, Fuel mixture).
aConnect the air temperature sensor.
aRefit:
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment),
143880
143882
D4F, and 780 – K4M
D4F, and 780
K4M