2005 Citroen C4 Condenser

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AIR
CONDITIONING
Checking the compressor oil level (continued)
2/ Slow leak.
Slow leaks do not lead to oil loss, therefore the same procedure should be followed as if there was no leak at all.
3/ Fast leak.
This type of leak causes both oil loss as well as allowing air to enter the system.
It is therefore necessary to:
- Replace the dehydrator.
- Drain as much oil as possible
(when replacing the faulty component).
Either before or during filling of the system with R 134.afluid, introduce 80 ccof NEWoil into the circuit.
When changing one of the following components, add the quantity stated:
- A drying bottle : 15 ccof compressor oil.
- A condenser or an evaporator : 20 ccof compressor oil.
- High pressure or low pressure pipework : 5 ccof compressor oil.
- A drying cartridge : 15 ccof compressor oil.
SPECIAL FEATURES: AIR CONDITIONING SYSTEM (R 134.a)
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CONDITIONING
434
C5HP1CKC
Changing the filtering/drying cartridge
The condenser (4)has a cylinder acting as a fluid reservoir with a filtering cartridge incorporated in it.
a:Inlet union
b:Outlet union
NOTE:The filtering cartridge cannot be swapped.
SPECIAL FEATURES: AIR CONDITIONING SYSTEM (R 134.a)C4
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AIR
CONDITIONING
SPECIAL FEATURES: AIR CONDITIONING SYSTEM (R 134.a)
Changing the filtering/drying cartridge
Move aside the radiator/condenser assembly.
Remove the plug (6), using tool [2].
Support the radiator/condenser assembly thus moved aside.
Remove the filtering/drying cartridge (7), using pliers.
Refitting.
Refit the filtering/drying cartridge (7).
Clean the threads of the plug (6).
It is essntial to change the O-ring seals (8).
Lubricate the O-ring seals (8)with aircon compressor oil.
Refit:
- The plug (6), using tool [2], tighten to 1,4 ± 0,2 m.daN.
- The brackets (5).
- The screws (4).
- The cardboard from the radiator harness.
- The nuts (1).
- The air filter assembly (3).
Couple the hose (2).
Recharge the circuit (R134.a)
(according to equipment) (see corresponding
operation).
Check the operation of the air conditioning.
C5HP14NCC5HP14PCC5HP14QC
XSARA PICASSO
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AIR
CONDITIONING
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Interpretation of the measurements.
«m»:High pressure.«s»:Over-heating (SC).
«n»:High temperature.«t»:Ambient air temperature.
«p»:Under-cooling (SR).«u»:Blown air temperature.
«q»:Low pressure.«v»: Humidity.
«r»:Low temperature.«w»: Temperature T3.
Under-cooling.
The under-cooling represents the difference between the condensation temperature and the aircon
fluid temperature at the aircon condenser outlet.
The under-cooling gives the quantity of aircon fluid
(in the liquid state)in the air conditioning circuit.
Values for under-cooling (SR).
Values «p» Origins Solutions
SR < 2°CLack of aircon fluid in the aircon condenser
(should be more than 150grammes)
Add some
2°C < SR <4°CLack of aircon fluid in the aircon condenser aircon fluid
(should be around 100to 150grammes)
4°C < SR < 10°C/12°CCorrect quantity
SR > 10°C/12°CRemove some
Excess aircon fluid in the aircon condenser aircon fluid
SR > 15°C
Blown air temperature «u».
The blown air temperature should be between 2°Cand 10°C.
E5AP2FBC
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CONDITIONING
448
(1)High pressure valve
(2)Low pressure valve
(3)Pressostat
(tighten to 0,6 m.daN)
(4)Aircon pressure reducer
(5)Filtering and drying cartridge
(6)Buffer capacity
«a»Outlet and inlet of the aircon pressure reducer, tighten to 0,8 m.daN
«b»Outlet and inlet of the aircon compressor, tighten to 0,7 m.daN
«c»and «d»Outlet and inlet of the aircon condenser, tighten to 0,6 m.daN
C5HP1BMP
AIR CONDITIONING SYSTEM (R 134.a)
Engine: EW10J4
C4
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CONDITIONING
449
(1)High pressure valve
(2)Low pressure valve
(3)Pressostat
(tighten to 0,6 m.daN)
(4)Aircon pressure reducer
(5)Filtering and drying cartridge
(6)Buffer capacity
«a»Outlet and inlet of the aircon pressure reducer, tighten to 0,8 m.daN
«b»Outlet and inlet of the aircon compressor, tighten to 0,7 m.daN
«c»and «d»Outlet and inlet of the aircon condenser, tighten to 0,6 m.daN
AIR CONDITIONING SYSTEM (R 134.a)
C5HP1BLP
Engines: EW10A - EW10J4S
C4
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CONDITIONING
450
(1) High pressure valve
(2)Low pressure valve
(3)Pressostat
(tighten to 0,6 m.daN)
(4)Aircon pressure reducer
(5)Filtering and drying cartridge
(6)Buffer capacity
«a»Outlet and inlet of the aircon pressure reducer, tighten to 0,8 m.daN
«b»Outlet and inlet of the aircon compressor, tighten to 0,7 m.daN
«c»and «d»Outlet and inlet of the aircon condenser, tighten to 0,6 m.daN
C5HP1BNP
AIR CONDITIONING SYSTEM (R 134.a)
Engine: DV6
C4
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CONDITIONING
451
(1)High pressure valve
(2)Low pressure valve
(3)Pressostat
(tighten to 0,6 m.daN)
(4)Aircon pressure reducer
(5)Filtering and drying cartridge
(6)Buffer capacity
«a»Outlet and inlet of the aircon pressure reducer, tighten to 0,8 m.daN
«b»Outlet and inlet of the aircon compressor, tighten to 0,7 m.daN
«c»and «d»Outlet and inlet of the aircon condenser, tighten to 0,6 m.daN
C5HP1BJP
AIR CONDITIONING SYSTEM (R 134.a)
Engine: DW10BTED4
C4
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