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1997-2006 Citroen Xsara SUV Air Conditioning -> System R 134.a (Xsara) User Manual

MY CAR USER MANUAL

Air Conditioning -> System R 134.a (Xsara) for Your Citroen Xsara SUV Second Generation (1997-2006)

CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM  
ALL TYPES  
CHECKING PRESSURES (continued)  
Low pressure  
too low  
Low pressure  
Low pressure  
normal  
too high  
- Insufficient fluid charge.  
- Constriction of the HP system.  
- Dirty pressure control valve.  
- Faulty pressure control valve.  
- Faulty compressor.  
High pressure  
too low  
- Cooling fan speed unsuitable.  
- Faulty compressor.  
High pressure  
normal  
- Faulty compressor.  
- Dirty evaporator.  
- Circuit normal  
- Cooling fan speed unsuitable.  
- Excessive fluid charge.  
- Dirty condenser.  
- Faulty pressure control valve.  
- Cooling fan speed unsuitable.  
- Faulty pressure control valve.  
- System blocked.  
- Water in the system.  
- Presence of solid matter in the system.  
- Dirty condenser.  
High pressure  
too high  
Checking the pressure at temperatures between 15°C and 35°C for information only.  
In general, the pressure should be approximately :  
- for R134.a fluid, less than 2 Bars (Low pressure), and between 13 and 24 Bars (High pressure).  
315  
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SAXO - All Types  
AIR CONDITIONING SYSTEM R 134.a  
(3) Click-fit union.  
C5HP12EC  
Tightening torques (m.daN).  
(1) High pressure valve  
(2) Low pressure valve  
(3) Click-fit union  
(4) Pressostat (1 seal Ø 10,82)  
(5) Dryer (2 seals Ø 7,65)  
(6) Relief valve, tighten to 0,43 m.daN ± 0,1  
(1 seal Ø 7,65 – 1seal Ø 16,5)  
(7) Compressor fixing flange 3 ± 0,8 m.daN (2 seals Ø 20)  
(8) (O-ring seal Ø 7,65)  
C5HP15UP  
316  
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SAXO - All Types  
AIR CONDITIONING SYSTEM R 134.a  
Checks on the air conditioning circuit  
Key.  
T = Scale of Temperature (°C ), and of High  
Pressure (Bars).  
P = Scale of Low pressure (Bars).  
Te = Exterior temperature (°C).  
HP = Pressure at compressor outlet (Bars).  
Ta = Temperature (°C) of air blown from the  
vents.  
BP = Pressure at compressor inlet (Bars).  
C5HP067D  
317  
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AIR CONDITIONING SYSTEM R 134.a  
XSARA  
Plan of air conditioning system  
Two solutions :  
1/ « MANULLI », with « NON EUROCLIM » compressor (O-ring seals).  
2/ « EATON », with « EUROCLIM » compressor (quadrilobe seals).  
(1) - High pressure valve  
(2) - Low pressure valve  
(3) - Pressostat  
(4) - Dryer  
Tightening torques m.daN.  
(a) 0.8  
(b) 4 ± 0.4  
(c) 0.8  
A Right hand drive.  
C5HP16RP  
318  
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XSARA  
AIR CONDITIONING SYSTEM R 134.a  
Plan of air conditioning system  
Solution :  
1/ « EATON », with « EUROCLIM » compressor and buffer capacity (quadrilobe  
seals).  
(1) - High pressure valve  
(2) - Low pressure valve  
(3) - Buffer capacity  
Tightening torques m.daN.  
(a) 0.8  
(b) 4 ± 0.4  
(c) 0.8  
A Right hand drive.  
C5HP17WP  
319  
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XSARA  
AIR CONDITIONING SYSTEM R 134.a  
Plan of air conditioning system  
Two solutions :  
1/ « MANULLI », with « NON EUROCLIM » compressor (O-ring seals).  
2/ « EATON », with « EUROCLIM » compressor (quadrilobe seals).  
(1) - High pressure valve  
(2) - Low pressure valve  
(3) - Pressostat  
(4) - Dryer  
Tightening torques m.daN.  
(a) 0.8  
(b) 4 ± 0.4  
(c) 0.8  
A Right hand drive.  
C5HP16SP  
320  
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AIR CONDITIONING SYSTEM R 134.a  
XSARA  
Plan of air conditioning system  
Two solutions :  
1/ « MANULLI », with « NON EUROCLIM » compressor (O-ring seals).  
2/ « EATON », with « EUROCLIM » compressor (quadrilobe seals).  
(1) - High pressure valve  
(2) - Low pressure valve  
(3) - Pressostat  
(4) - Dryer  
Tightening torques m.daN.  
(a) 0.8  
(b) 4 ± 0.4  
(c) 0.8  
A Right hand drive.  
C5HP16VP  
321  
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XSARA  
AIR CONDITIONING SYSTEM R 134.a  
Plan of air conditioning system  
Trois solutions :  
1/ « MANULLI », with « NON EUROCLIM » compressor (O-ring seals).  
2/ « EATON », with « EUROCLIM » compressor and buffer capacity (quadrilobe seals).  
3/ « EATON », with « NON EUROCLIM » compressor and buffer capacity (O-ring seals).  
(1) - High pressure valve  
(2) - Low pressure valve  
(3) - Buffer capacity  
Tightening torques m.daN.  
(a) 0.8  
(b) 4 ± 0.4  
(c) 0.8  
A Right hand drive.  
C5HP17XP  
322  
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Related Topics

Air Conditioning

R 134 a (HFC)
Special Features: Air Conditioning System
Special Features: Pollen Filter
Special Features: Evaporator / Filter Cartridge
Compressor Lubricant
Checking Efficiency
System R 134.a (Saxo)
System R 134.a (Xsara Picasso)
Checking the Air Conditioning System

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