Jaguar XJ (X350). Manual — part 1188

Contaminated Refrigerant Handling

1. If contaminated refrigerant is detected DO NOT recover the refrigerant into your R-134a
OR R-12 recovery/recycling equipment. Take the follow actions:
1. Repeat the test to verify contaminated refrigerant is present.

2. Advise the customer of the contaminated A/C system and any additional cost to repair
the system. The customer may wish to return to the repair facility performing the last A/C
repair.

3. Recover the contaminated refrigerant using suitable recovery only equipment designed
for capturing and storing contaminated refrigerant. This equipment must only be used to
recover contaminated refrigerant to prevent the spread to other vehicles. As an alternative,
contact an A/C repair facility in your area with the proper equipment to perform the repair.

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On completion of the recovery of the contaminated refrigerant, it will be necessary to

carry out the A/C system flushing procedure.
Air Conditioning (A/C) System Flushing

Electronic Leak Detection

1.

WARNING: Good ventilation is necessary in the area where A/C leak testing is to

be carried out. If the surrounding air is contaminated with refrigerant gas, the leak
detector will indicate this gas all the time. Odors from other chemicals such as
antifreeze, diesel fuel, disc brake cleaner, or other cleaning solvents can cause the same
problem. A fan, even in a well ventilated area, is very helpful in removing small traces of
contamination from the air that might affect the leak detector. Failure to follow this
instruction may result in personal injury.

Attach an R-134a manifold gauge set or use a UL-approved recovery/recycling device such as
an R-134a A/C refrigerant center (which meets SAE Standard J 1991). For additional
information, refer to the manufacturers equipment instructions.

•

Both gauges should indicate 413-551 kPa (60-80 psi) at 24°C (75°F) with the engine

off.

•

If little or no pressure is indicated, carry out the air conditioning (A/C) system recovery,

evacuation and charging procedure.

2. Use an R134-a Automatic calibration halogen leak detector to leak test the refrigerant
system. For additional information, refer to the manufacturers equipment instructions.


3. If a leak is found, carry out the air conditioning (A/C) system recovery procedure.

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Fluorescent Dye Leak Detection

1.

WARNING: Eye protection glasses supplied with the ultraviolet (UV) lamp

should be used to protect eyesight from harm.

NOTE:

The air conditioning (A/C) system has an R-134a leak trace dye wafer incorporated into
the desiccant bag. The exact location of leaks can be pinpointed by the bright
yellow/green glow of the tracer dye. Since more than one leak may exist, always inspect
each component. If it is necessary to add dye (due to a severe leakage for example) use
proprietary tracer dye injection equipment.

Check for leaks using ultraviolet (UV) lamp.


2. Check all components, fittings and lines of the A/C system.


3. Carry out the repair. For additional information, refer to <<412-03>>.


4. After the leak is repaired, remove any traces of leak trace dye with a general purpose oil
solvent.


5. Check the A/C system for correct operation.


6. Verify the repair by operating the system for a short time and inspecting with the (UV)
lamp.

Inspection and Assembly Requirements

1. Check for leaks using ultraviolet (UV) Lamp.
Fluorescent Dye Leak Detection


2. NOTE:

Any time a hose or component connection leak is observed, the component and fitting
must be separated, cleaned and a new O-ring fitted and lubricated with air conditioning
compressor oil.

NOTE:

When separating A/C joints, cap the open connections immediately. Do not leave open to
atmosphere.

O-ring seal surfaces must be free of dirt, lint, burrs and scratches. The O-ring and connector
should be lubricated with air conditioning compressor oil.

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