Climate Control System - General Information: Other Jaguar XKR I рестайлинг

Heating/Defrosting

The heating system is a water valve controlled system. The ambient air is passed through the cabin air filter, directed through and/or around the heater core and evaporator core, mixed and distributed from the plenum assembly to the floor, instrument panel and/or the defrost ducts as desired.

For additional information, Refer to Heating and Ventilation article. .

Heater Core and Evaporator core

The heater core consists of a number of fins and tubes in an arrangement to extract heat from the engine coolant and transfer the heat to the air that passes through the heater core. The evaporator core is a plate/fin type arrangement.

For additional information, Refer to Air Conditioning . .

Scheme 1

The connections between the air conditioning (A/C) condensor core/receiver drier and the connections between the lines use peanut fittings.

1. The male and female line of the peanut fitting are retained with a nut.
2. An O-ring seal is installed around the tube on the male line.
3. Support the female line with a wrench to prevent the twisting of the tubes.
4. When correctly assembled, the mating surfaces of the male and female fittings should be flush.

Blower motors

The blower motors pull air from the air inlet and forces it into the plenum assembly where it is mixed and distributed. The blower motors will not operate if the system is in AUTO mode and the engine temperature is low. The blower motor speeds are adjusted by turning the rotary switch clockwise to increase the motor speeds and by turning the rotary switch counter-clockwise will decrease the blower motor speeds. The blower motors have eleven speeds.

Air conditioning refrigerant

The R-134a air conditioning system uses a hydrofluorocarbon (HFC) non-CFC based refrigerant. R-134a requires the use of Jaguar compressor oil or equivalent meeting Jaguar specification. Do not use R-12 tools and equipment when repairing an R-134a system unless specified in the workshop manual. Never mix R-12 and R-134a refrigerants and oils. They are not compatible.

Air Conditioning (A/C) System

The air conditioning (A/C) system is a multi-piece, single case design, with an integral blower motor. The system allows the operator to control the temperature by delivering heated or cooled air to maintain a constant temperature. In addition, during A/C operation, it reduces the relative humidity of air inside the vehicle. Controls are provided to adjust the temperature and system functions, including blower motor speeds for desired airflow. Ambient air is passed through during all system operations except for MAX A/C cooling (when recirculated air is used) and OFF. For additional information, Refer to Air Conditioning . .

Control System Inputs

The climate control system inputs can be selected from the climate control assembly which offers either AUTO or manual control (MODE).

Control System Outputs

The air inlet, air distribution and air temperature blend doors are all controlled by electronic actuators. For additional information, Refer to Control Components . .

Air Conditioning (A/C) System Recovery, Evacuation and Charging - General Procedures

1. Connect the charging station. For additional information, refer to the manufacturers equipment instructions.
2. Recover the refrigerant. For additional information, refer to the manufacturers equipment instructions.
3. Carry out the required repair procedure. Refer to «Air Conditioning»(ref-311061) .
4. Add the required amount of oil to the A/C system depending on the repair procedure. Refer to «Refrigerant Oil Adding - General Procedures»(ref-311053-S32207716752009032300000) .
5. Evacuate the A/C system. For additional information, refer to the manufacturers equipment instructions.
6. Check the A/C system for sufficient vacuum. For additional information, refer to the manufacturers equipment instructions.
7. Charge the A/C system with the correct amount of refrigerant. Refer to «Specifications»(ref-311053-S05415061362009032300000) .
8. Check the A/C system for correct operation.
9. Carry out fluorescent dye leak detection test. Refer to «Fluorescent Dye Leak Detection - General Procedures»(ref-311053-S15874593072009032300000) .

Contaminated Refrigerant Handling - General Procedures

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: Repeat the test to verify contaminated refrigerant is present. 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. 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. On completion of the recovery of the contaminated refrigerant, it will be necessary to carry out the A/C system flushing procedure. Refer to «Air Conditioning (A/C) System Flushing - General Procedures»(ref-311053-S23050880982009032300000) .

Electronic Leak Detection - General Procedures

1. 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. Refer to «Air Conditioning (A/C) System Recovery, Evacuation and Charging - General Procedures»(ref-311053-S38069994542009032300000) .
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. Refer to Air Conditioning (AC) System Recovery, Evacuation and Charging.

Fluorescent Dye Leak Detection - General Procedures

1. 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 «Air Conditioning»(ref-311061) .
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.

Manifold Gauge Set Connection - General Procedures

1. Install the manifold gauge set. For additional information, refer to the manufacturers equipment instructions.
2. Carry out the repair.
3. Remove the manifold gauge set. For additional information, refer to the manufacturers equipment instructions.
4. Carry out fluorescent dye leak detection test. Refer to «Fluorescent Dye Leak Detection - General Procedures»(ref-311053-S15874593072009032300000) .
5. Check air conditioning (A/C) system for correct operation.

Refrigerant Oil Adding - General Procedures

Note. When separating air conditioning (A/C) connections, cap the open connections immediately. Do not leave open to the atmosphere.

1. A new replacement A/C compressor contains no refrigerant oil. When replacing components of the air conditioning refrigerant system, add oil to the replacement components. Refer to «Specifications»(ref-311053-S05415061362009032300000) . If evidence of a leak is found, source of the leak is to be rectified.

Refrigerant System Tests - General Procedures

1. Use R-134a A/C Refrigerant Centre to evacuate and recover the A/C system. Follow the equipment manufactures procedures and instructions for use of equipment.