2000 Citroen C5 engine

Downloaded from www.Manualslib.com manuals search engine C5FPOC5CC5FPOC6D
AIR
CONDITIONING
SPECIAL FEATURES : AIR CONDITIONING SYSTEM (R 134.a)
Pollen filter
Remove :
- The trim(1) under the dashboard (driver’s side).
- The cover (2).
- Unclip at «a» and pull out the pollen filter (3).
- Remove the pollen filter(3).
246

Downloaded from www.Manualslib.com manuals search engine SPECIAL FEATURES : AIR CONDITIONING SYSTEM (R 134.a)
Drying cartridge
Tools
[1] Filling and recycling stationMULLER - ECOTECHNICS
[2]TORX adaptor70 FACOM
[3] After Sales kit(Bottle /skirt / bottle nozzle /grease / compressor oil)
Reminder : All repairs on an aircon circuit require the aircon circuit to be drained.
After carrying out the dismantling operations necessary to gain access to the condenser, proceed to clean
the area of the skirt (8) of the reservoir(6)using a cloth, then replace the dryer reservoir (6).
Removing the plastic bracket holding the reservoir (6) :
- Remove the screw (3)(Torx 20), from the bracket assembly/plastic counter-bracket (4)and (5).
- Remove the counter-bracket (5). (Rotate it round the hinge in a clockwise direction).
- Disengage the bracket from the harness(1)(Rotate it round the reservoir (6)anti-clockwise).
- Remove the bracket(5) from the reservoir body (6).
Unscrewing the reservoir (6).
- Unscrew the reservoir(6)using the tool[2].
C5HP16ECAIR
CONDITIONING
247

Downloaded from www.Manualslib.com manuals search engine C5HP16EC
SPECIAL FEATURES : AIR CONDITIONING SYSTEM (R 134.a)
Condenser with integral reservoir (continued)
Removing the reservoir (6) from the base (8).
WARNING :This operation requires the greatest care, the base(8)should be kept clean prior to fitting
the new reservoir.
- Remove the reservoir (6) and the protection skirt(7), avoiding WITHOUT F
AILany contact or collision
with other items under the bonnet(Risk of impurities entering the base (8)).
- Check before refitting the reservoir (6)that the base(8)is clean.
(If it is not, clean in and around the base(8)with a paper cloth.)
Preparing the new dryer reservoir
- Remove the black plastic protection cap from the reservoir neck (6), leaving in place the green protec-
tion at the other end, in order to keep the new reservoir (6) sealed when mounting it in the base(8)of
the condenser.
- Use the grease sachet in the replacement kit, to lubricate the threads of the reservoir.
- Use the oil sachet in the replacement kit, to lubricate the two O-ring seals of the reservoir (6).
- Position the reservoir(6), with its new protection skirt (7)from the replacement kit, and engage the
threads of the reservoir (6) in the base (8).
- Check that the downward edge of the skirt (7), covers the base(8) all around it.
AIR
CONDITIONING
248

Downloaded from www.Manualslib.com manuals search engine C5HP16EC
SPECIAL FEATURES : AIR CONDITIONING SYSTEM (R 134.a)
Condenser with integral reservoir (continued)
WARNING :The reservoir (6)contains a drying agent. As soon as the black protection is removed, the reser-
voir must be mounted in the base (8), otherwise there is a risk of damaging the air conditioning circuit.
Screwing the reservoir (6) into the base (8).
- Screw the reservoir(6)manually, until the neck of the reservoir(6) is in contact with the bottom of the
base (8).
- Tighten with a torque spanner and tool [2]at(2)to 1.3 ± 0.1 m.daN.
Fitting the plastic bracket. (New, from the replacement parts kit).
Proceed in the opposite order to removal, tighten the screw(3)to 0.15 m.daN.
AIR
CONDITIONING
249

Downloaded from www.Manualslib.com manuals search engine AIR
CONDITIONING
250
ESSENTIAL: The compressor lubricant is extremely hygroscopic; always use FRESH oil.
SPECIAL FEATURES : AIR CONDITIONING SYSTEM (R 134.a)
Compressor lubricant.
Checking the compressor oil level.
There are three specific cases :
- 1/Repairs to a system without leaks.
- 2/Slow leak.
- 3/Fast leak.
1/ Repairing a system without leaks..
a) - Using draining/recovery equipment not fitted with an oil decanter.
- Drain the system as slowly as possible via the LOW PRESSURE valve, so as not to lose any oil.
- No more oil should be added when filling the system with R 134.a fluid.
b) - Using draining/filling equipment fitted with an oil decanter.
- Drain the R 134.a fluid from the system in accordance with the instructions in the equipment handbook.
- Measure the amount of oil recovered.
- Add the same amount of NEW oil when filling the system with R 134.a fluid.
c) - Replacing a compressor.
- Remove the old compressor, drain it and measure the oil quantity.
- Drain the new compressor (supplied full), so that the same amount of NEW oil is left in the compressor as was in the old compressor.
- No more oil should be added when filling the system with R 134.a fluid.

Downloaded from www.Manualslib.com manuals search engine SPECIAL FEATURES : AIR CONDITIONING SYSTEM (R 134.a)
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 dryer.
- Drain as much oil as possible (when replacing the faulty component).
Either before or during filling of the system with R 134.a fluid, introduce 80 ccof NEW oil into the system.
AIR
CONDITIONING
251

Downloaded from www.Manualslib.com manuals search engine AIR
CONDITIONING
252
CHECKING PRESSURES (continued)
Low pressure
too low
- Insufficient fluid charge.
- Constriction of the HP system.
- Dirty pressure control valve.- Cooling fan speed unsuitable.
- Faulty compressor.- Faulty pressure control valve.
- Faulty compressor.
- Faulty compressor.
- Dirty evaporator.- Circuit normal. - Cooling fan speed unsuitable.
- Faulty pressure control valve.
- System blocked.
- Water in the system.- Presence of solid matter in the
system.
- Dirty condenser.- Excessive fluid charge.
- Dirty condenser.
- Faulty pressure control valve.
- Cooling fan speed unsuitable. High pressure
too low
High pressure
normal
High pressure
too highLow pressure
normalLow pressure
too high
Checking the pressure at temperatures between 15°C and 35°C for information only.
In general, the pressure should be approximately :
- forR134.afluid, less than 2 Bars(Low pressure), and between 13and 24 Bars(High pressure).
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM

Downloaded from www.Manualslib.com manuals search engine C5HP15QP
AIR CONDITIONING SYSTEM R 134.a
Engines : 6FZ - RFN - RLZ
(1)High pressure valve.
(2)Low pressure valve.
(3)Pressostat.
(4)Capacity.
(a) Condenser bracket
Tighten to 0,8 m.daN
(b)Pressure control valve
Tighten to 0,8 m.daN
(c)Compressor bracket
Tighten to 2,5 ± 0,1 m.daN
(d) Condenser dryer reservoir
Tighten to1,4 ± 0,2 m.daN.
AIR
CONDITIONING
253