Nissan Teana J32. Instruction — part 649
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< ON-VEHICLE MAINTENANCE >
REFRIGERANT
ON-VEHICLE MAINTENANCE
REFRIGERANT
Collection and Charge
INFOID:0000000003795980
SETTING OF SERVICE TOOLS AND EQUIPMENT
Discharging Refrigerant
Evacuating System and Charging Refrigerant
Procedure
1.
Shut-off valve
2.
A/C service valve
3.
Recovery/recycling recharging
equipment
JSIIA0257ZZ
1.
Shut-off valve
2.
A/C service valve
3.
Recovery/recycling recharging
equipment
4.
Vacuum pump
5.
Manifold gauge set
6.
Refrigerant container (HFC-134a)
7.
Weight scale
A.
Preferred (best) method
B.
Alternative method
C.
For charging
JSIIA0258ZZ
REFRIGERANT
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WARNING:
Never breath A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and throat.
Use only approved recovery/recycling recharging equipment to discharge HFC-134a (R-134a) refriger-
ant. Ventilate work area before resuming service if accidental system discharge occurs. Additional
health and safety information may be obtained from refrigerant and lubricant manufacturers.
1.
CHECK A/C SYSTEM
1.
Check that A/C system operates normally. Refer to the following.
-
HAC-8, "Description & Inspection"
(WITHOUT 7 INCH DISPLAY)
-
HAC-108, "WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM : Description & Inspection"
[WITH 7
INCH DISPLAY (WITHOUT INTELLIGENT AIR CONDITIONER SYSTEM)]
-
HAC-112, "WITH INTELLIGENT AIR CONDITIONER SYSTEM : Description & Inspection"
[WITH 7 INCH
DISPLAY (WITH INTELLIGENT AIR CONDITIONER SYSTEM)]
2.
Check if there is a large amount of leakage of refrigerant or oil.
CAUTION:
Never perform the lubricant return operation if a large amount of leakage of lubricant is detected.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Check for refrigerant leakage. Refer to
2.
LUBRICANT RETURN OPERATION
1.
Start the engine and run it as follows.
-
Engine speed: Idle - 1,200 rpm
-
A/C switch: ON
-
Blower speed: Max. position
-
Air inlet: Recirculation (REC)
-
Set temperature: FULL HOT
2.
Perform lubricant return operation for approximately 10 minutes.
3.
Stop the engine.
>> GO TO 3.
3.
CHECK RECOVERY/RECYCLING RECHARGING EQUIPMENT
1.
Operate recovery/recycling recharging equipment.
CAUTION:
• Follow the instructions of the manufacturer for the handling or maintenance of the equipment.
• Never fill the equipment with undesignated refrigerant.
2.
Check the gauge pressure of recovery/recycling recharging equipment.
Is there pressure?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
DISCHARGE REFRIGERANT INSIDE PIPES
Discharge the refrigerant from the high-pressure hose and low-pressure hose of recovery/recycling recharging
equipment.
>> GO TO 5.
5.
CONNECT RECOVERY/RECYCLING RECHARGING EQUIPMENT
1.
Remove the service valve caps from the vehicle.
2.
Connect recovery/recycling recharging equipment to the service valves.
>> GO TO 6.
6.
DISCHARGE REFRIGERANT FROM THE VEHICLE
Operate recovery/recycling recharging equipment to discharge the refrigerant from the vehicle.
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REFRIGERANT
>> GO TO 7.
7.
REMOVE ANY REMAINING REFRIGERANT
Evacuate air for approximately 10 minutes or more to remove any remaining refrigerant integrated to the com-
pressor oil, etc.
>> GO TO 8.
8.
REPLACE OR REPAIR REFRIGERANT SYSTEM PARTS
1.
Replace or repair the malfunctioning part.
CAUTION:
• Always use a new O-ring for the parts that the cooler system was removed.
• Apply compressor oil to the O-rings of piping when installing the piping. However, never apply it
to the threads.
2.
Adjust the compressor oil amount according to the replaced parts. Refer to
.
>> GO TO 9.
9.
EVACUATE AIR FROM THE REFRIGERANT SYSTEM
Evacuate air from the refrigerant system for approximately 25 minutes or more.
CAUTION:
Evacuate air for at least approximately 15 minutes or more if the parts are replaced.
>> GO TO 10.
10.
CHECK AIRTIGHTNESS OF REFRIGERANT SYSTEM
Check the airtightness of the refrigerant system for approximately 25 minutes or more.
CAUTION:
Check the airtightness for at least approximately 15 minutes or more if the parts are replaced.
Does the pressure decrease?
YES
>> GO TO 11.
NO
>> GO TO 8.
11.
CHECK REFRIGERANT LEAKAGE
1.
Connect refrigerant recovery/recycling recharging equipment or manifold gauge set (SST).
2.
Charge the refrigerant of approximately 200 g to the refrigerant system.
3.
Check for refrigerant leakage. Refer to
.
NOTE:
When using electrical leak detector (SST). Refer to
Is the inspection result normal?
YES
>> GO TO 12.
NO
>> Repair or replace parts according to the inspection results.
12.
CHARGE REFRIGERANT
1.
Connect recovery/recycling recharging equipment or manifold gauge set (SST).
2.
Evacuate air again.
3.
Charge the specified amount of refrigerant to the refrigerant system.
>> GO TO 13.
13.
CHECK REFRIGERANT LEAKAGE
Check for refrigerant leakage again. Refer to
.
NOTE:
When using electrical leak detector (SST). Refer to
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> GO TO 6.
REFRIGERANT
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14.
CHECK OPERATION
Check the A/C system for normal operation. Refer to
.
Is the inspection result normal?
YES
>> GO TO 15.
NO
>> Repair or replace parts according to the inspection results.
15.
CHECK RECOVERY/RECYCLING RECHARGING EQUIPMENT
1.
Disconnect recovery/recycling recharging equipment or manifold gauge set (SST).
2.
Discharge the refrigerant from the high-pressure hose and low-pressure hose of the recovery/recycling
recharging equipment.
3.
Install the service valve caps.
>> END
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