Nissan Rogue. Instruction — part 739
HA-24
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OIL
OIL
Description
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MAINTENANCE OF OIL LEVEL
The compressor oil is circulating in the system together with the refrigerant. It is necessary to fill compressor
with oil when replacing A/C system parts or when a large amount of refrigerant leak is detected. It is important
to always maintain oil level within the specified level or otherwise the following conditions may occur:
• Insufficient oil amount: Stuck compressor
• Excessive oil amount: Insufficient cooling (caused by insufficient heat exchange)
Inspection
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If a compressor is malfunctioning (internal noise, insufficient cooling), check the compressor oil.
1.
COMPRESSOR OIL JUDGMENT
1. Remove the compressor. Refer to
HA-29, "Removal and Installation"
.
2. Sample compressor oil and judge below according to the figure.
Judgement result 1>>Replace compressor only.
Judgement result 2>>Replace compressor and condenser (includes liquid tank).
Perform Oil Return Operation
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CAUTION:
If a large amount of refrigerant or oil leak is detected, do not perform oil return operation.
1. Start the engine and set to the following conditions:
• Engine speed: Idling to 1,200 rpm
• A/C switch: ON
• Fan (blower) speed: Maximum speed set
• Intake door position: Recirculation
• Temperature setting: Full cold
2. Perform oil return operation for approximately 10 minutes.
3. Stop the engine.
4. Oil return operation is complete.
Oil Adjusting Procedure for Components Replacement Except Compressor
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Fill with oil for the amount that is calculated according to the following conditions.
Example: Oil amount to be added when replacing evaporator [m (US fl oz, Imp fl oz)] = 75 (2.5, 2.6) +
α
Oil Type:
ND-OIL8 (PAG)
JSIIA0927GB
Conditions
Oil amount to be added to A/C system
m (US fl oz, Imp fl oz)
Replace evaporator
75 (2.5, 2.6)
Replace condenser (includes liquid tank)
80 (2.7, 2.8)
OIL
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Oil Adjusting Procedure for Compressor Replacement
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1. Before connecting recovery/recycling equipment to vehicle, check recovery/recycling equipment gauges.
No refrigerant pressure should be displayed. If NG, recover refrigerant from equipment lines.
2. Connect recovery/recycling equipment to vehicle. Confirm refrigerant purity in supply tank using recovery/
recycling equipment and refrigerant identifier. If NG, refer to
HA-4, "Precautions For Refrigerant System
3. Confirm refrigerant purity in vehicle A/C system using recovery/recycling equipment and refrigerant identi-
HA-4, "Precautions For Refrigerant System Service"
.
4. Discharge refrigerant into the refrigerant recovery/recycling equipment. Measure oil discharged into the
recovery/recycling equipment.
5. Drain the oil from the “old” (removed) compressor into a graduated container and recover the amount of
oil drained.
6. Drain the oil from the “new” compressor into a separate, clean container.
7. Measure an amount of new oil installed equal to amount drained from “old” compressor. Add this oil to
“new” compressor through the suction port opening.
Refrigerant leak is detected
Large amount leak
30 (1.0, 1.1)
Small amount leak
—
Oil amount that is recycled together with refrigerant during recycle operation
α
Conditions
Oil amount to be added to A/C system
m (US fl oz, Imp fl oz)
1.
New compressor
2.
Old compressor
3.
Recovery/recycling equipment
4.
Measuring cup X
5.
Measuring cup Y
6.
New oil
A.
Drain oil from the new compressor
into clean container
B.
Record amount of oil recovered
C.
Install new oil equal to recorded
amounts in measuring cups X and Y
ALIIA0759ZZ
HA-26
< PERIODIC MAINTENANCE >
OIL
8. Measure an amount of new oil equal to the amount recovered during discharging. Add this oil to “new”
compressor through the suction port opening.
PERFORMANCE TEST
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PERFORMANCE TEST
Inspection
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INSPECTION PROCEDURE
1. Connect recovery/recycling/recharging equipment (for HFC-134a) or manifold gauge.
2. Start the engine, and set to the following condition.
Test condition
3. Maintain test condition until A/C system becomes stable. (Approximately 10 minutes)
4. Check that test results of “recirculating-to-discharge air temperature” and “ambient air temperature-to-
operating pressure” are within the specified value.
5. When test results are within the specified value, inspection is complete.
If any of test result is out of the specified value, perform diagnosis by gauge pressure. Refer to
.
RECIRCULATING-TO-DISCHARGE AIR TEMPERATURE TABLE
AMBIENT AIR TEMPERATURE-TO-OPERATING PRESSURE TABLE
Surrounding condition
Indoors or in the shade (in a well-ventilated place)
Vehicle condition
Door
Closed
Door glass
Full open
Hood
Open
Engine speed
Idle speed
A/C condition
Temperature control switch or dial
Full cold
A/C switch
ON
Air outlet
VENT (ventilation)
Intake door position
Recirculation
Fan (blower) speed
Maximum speed set
Inside air (Recirculating air) at blower assembly inlet
Discharge air temperature from center ventilator
°C (°F)
Relative humidity
%
Air temperature
°C (°F)
50 – 60
20 (68)
4.7 – 6.7 (40 – 44)
25 (77)
8.6 – 11.1 (47 – 52)
30 (86)
12.6 – 15.6 (55 – 60)
35 (95)
19.0 – 22.5 (66 – 73)
60 – 70
20 (68)
6.7 – 8.7 (44 – 48)
25 (77)
11.1 – 13.6 (52 – 56)
30 (86)
15.6 – 18.6 (60 – 65)
35 (95)
22.5 – 26.0 (73 – 79)
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