Nissan Qashqai J11. Manual — part 1060
HA-66
< BASIC INSPECTION >
[TYPE 2]
LUBRICANT
LUBRICANT
Description
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MAINTENANCE OF LUBRICANT LEVEL
The compressor lubricant is circulating in the system together with the refrigerant. It is necessary to fill com-
pressor with lubricant when replacing A/C system parts or when a large amount of refrigerant leakage is
detected. It is important to always maintain lubricant level within the specified level. Otherwise, the following
conditions may occur.
• Insufficient lubricant amount: Stuck compressor
• Excessive lubricant 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-74, "Removal and Installation"
.
2.
Sample a compressor oil and judge on the figure.
Judgement result 1>>Replace compressor only.
Judgement result 2>>Replace compressor and condenser & liquid tank assembly.
Perform Lubricant Return Operation
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CAUTION:
If a large amount of refrigerant or lubricant leakage is detected, never perform lubricant return opera-
tion.
1.
Start the engine and set to the following conditions.
• Engine speed: Idling to 1,200 rpm
• A/C switch: ON
• Fan speed: Maximum speed set
• Intake door position: Recirculation
• Temperature setting: Full cold
2.
Perform lubricant return operation for approximately 10 minutes.
3.
Stop the engine.
4.
Lubricant return operation is complete.
Lubricant Adjusting Procedure for Components Replacement Except Compressor
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Fill with lubricant for the amount that is calculated according to the following conditions.
Example: Lubricant amount to be added when replacing evaporator and condenser&liquid tank assembly [m
(Imp fl oz.)] = 35 (1.2) + 20 (0.7) +
α
Name
: ND-OIL12
JSIIA0927GB
LUBRICANT
HA-67
< BASIC INSPECTION >
[TYPE 2]
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Lubricant Adjusting Procedure for Compressor Replacement
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1.
Drain lubricant from removed compressor and measure lubricant amount.
• Remove drain bolt (A), and then drain lubricant from drain
port.
• Measure total amount of lubricant that is drained from
removed compressor.
2.
Drain lubricant from a new compressor that is calculated accord-
ing to the following conditions.
CAUTION:
If lubricant amount that is drained from removed compressor is less than 60 m (2.1 Imp fl oz.),
perform calculation by setting “D” as 40 m (1.4 Imp fl oz.).
Example: Lubricant amount to be drained from a new compressor when replacing compressor and con-
denser & liquid tank assembly [m (Imp fl oz.)] [D = 60 (2.1),
α
= 5 (0.2)]
110 (3.9)
−
[60 (1.6) + 20 (0.7) + 5 (0.2)] = 35 (1.2)
3.
Tighten drain bolt to the specified torque.
Conditions
Lubricant amount to be added to A/C system
m
(Imp fl oz.)
Replace evaporator
35 (1.2)
Replace condenser & liquid tank assembly
20 (0.7)
Refrigerant leakage is detected
Large amount leakage
30 (1.1)
Small amount leakage
—
Lubricant amount that is recycled together with refrigerant during recycle operation
α
JMIIA3527ZZ
Amount to be drained (A) [m (Imp fl oz.)] = F
−
(D
+ S + R +
α
)
F
: Lubricant amount that a new compressor
contains [110 (3.9)]
D
: Lubricant amount that is drained from re-
moved compressor
S
: Lubricant amount that remains inside of re-
moved compressor [20 (0.7)]
R
: Lubricant amount to be added according to
components that are removed except com-
pressor
α
: Lubricant amount that is recycled together
with refrigerant during recycle operation
Conditions
Lubricant amount to be added to A/C system
m
(Imp fl oz.)
Replace evaporator
35 (1.2)
Replace condenser & liquid tank assembly
20 (0.7)
JPIIA1455GB
HA-68
< BASIC INSPECTION >
[TYPE 2]
LUBRICANT
4.
Install compressor and check the operation.
Specified torque
: 30 N·m (306 kg-m, 22 ft-lb)
PERFORMANCE TEST
HA-69
< BASIC INSPECTION >
[TYPE 2]
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PERFORMANCE TEST
Inspection
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INSPECTION PROCEDURE
1.
Connect recovery/recycling/recharging equipment (for HFO-1234yf) 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. (More than 15 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 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
15 (59)
2.4 – 3.9 (36 – 39)
20 (68)
8.4 – 10.4 (47 – 51)
25 (77)
13.0 – 15.5 (55 – 66)
30 (86)
16.9 – 19.8 (62 – 68)
60 – 70
15 (59)
3.9 – 5.3 (39 – 42)
20 (68)
10.4 – 12.5 (51 – 55)
25 (77)
15.5 – 18.0 (60 – 64)
30 (86)
19.8 – 22.7 (68 – 73)
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