Nissan Juke F15. Manual - part 834

REFRIGERANT

HA-19

< BASIC INSPECTION >

• Temperature setting: Full cold

• Fan (blower) speed: Maximum speed set

7. Run the engine at approximately 1,500 rpm for 2 minutes or more.
8. Stop the engine. Check again for refrigerant leakage. GO TO 4.

WARNING:

Be careful not to get burned when the engine is hot.

NOTE:

• Start refrigerant leakage check immediately after the engine is

stopped.

• When refrigerant circulation is stopped, pressure on the low-

pressure side rises gradually, and after this, pressure on the

high-pressure side falls gradually.

• The higher the pressure is, the easier it is to find the refriger-

ant leakage.

Recycle Refrigerant

INFOID:0000000012197111

WARNING:

• Always use HFC-134a for A/C refrigerant. If CFC-12 is accidentally charged, compressor is damaged

due to insufficient lubrication.

• Always observe and follow precautions described on refrigerant container. Incorrect handling may

result in an explosion of refrigerant container, frostbite, or the loss of eyesight.

• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose, or

throat.

• Never allow HFC-134a to be exposed to an open flame or others because it generates poisonous gas

when in contact with high temperature objects. Keep workshop well ventilated.

1. Perform lubricant return operation. Refer to

HA-21, "Perform Lubricant Return Operation"

. (If refrigerant or

lubricant leakage is detected in a large amount, omit this step, and then GO TO 2.)

CAUTION:

Never perform lubricant return operation if a large amount of refrigerant or lubricant leakage is

detected.

2. Check gauge pressure readings of recovery/recycling/recharging equipment. When remaining pressure

exists, recycle refrigerant from high-pressure hose and low-pressure hose.

NOTE:

Follow manufacturer instructions for the handling or maintenance of the equipment. Never fill the equip-

ment with non-specified refrigerant.

3. Remove A/C service valve cap from the vehicle.
4. Connect recovery/recycling/recharging equipment to A/C service valve.
5. Operate recovery/recycling/recharging equipment, and recycle refrigerant from the vehicle.
6. Evacuate air for 10 minutes or more to remove any remaining refrigerant integrated to compressor lubri-

cant, etc.

7. Refrigerant recycle operation is complete.

Charge Refrigerant

INFOID:0000000012197112

WARNING:

• Always use HFC-134a for A/C refrigerant. If CFC-12 is accidentally charged, compressor is damaged

due to insufficient lubrication.

• Always observe and follow precautions described on refrigerant container. Incorrect handling may

result in an explosion of refrigerant container, frostbite, or the loss of eyesight.

• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure my irritate eyes, nose, or throat.

• Never allow HFC-134a to be exposed to an open flame or others because it generates poisonous gas

when in contact with high temperature objects. Keep workshop well ventilated.

1. Connect recovery/recycling/recharging equipment to the A/C service valve.

SHA839E

HA-20

< BASIC INSPECTION >

REFRIGERANT

2. Operate recovery/recycling/recharging equipment, and evacuate air from A/C system for 25 minutes or

more.

CAUTION:

Evacuate air for 15 minutes or more if the parts are replaced.

3. Check the airtightness of A/C system for 25 minutes or more. If pressure rises more than the specified

level, charge A/C system with approximately 200 g (0.4 lb) refrigerant and check that there is no refriger-

ant leakage. Refer to

HA-17, "Leak Test"

CAUTION:

Check the airtightness for 15 minutes or more if the parts are replaced.

4. If parts other than compressor are replaced, fill compressor lubricant according to parts that are replaced.
5. Charge the specified amount of refrigerant to A/C system.
6. Check that A/C system operates normally.
7. Disconnect recovery/recycling/recharging equipment. (Collect the refrigerant from the high-pressure hose

and low-pressure hose of recovery/recycling/recharging equipment.)

8. Install A/C service valve cap.
9. Refrigerant charge is complete.

LUBRICANT

HA-21

< BASIC INSPECTION >

LUBRICANT

Description

INFOID:0000000012197113

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

INFOID:0000000012197114

If a compressor is malfunctioning (internal noise, insufficient cooling), check the compressor oil.

COMPRESSOR OIL JUDGMENT

1. Remove the compressor. Refer to

HA-29, "COMPRESSOR : 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 liquid tank.

Perform Lubricant Return Operation

INFOID:0000000012197115

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 (blower) 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

INFOID:0000000012197116

Fill with lubricant for the amount that is calculated according to the following conditions.
Example: Lubricant amount to be added when replacing evaporator and liquid tank [m (US fl oz, Imp fl oz)] =

35 (1.2, 1.2) + 5 (0.2, 0.2) +

Name

: A/C system Oil Type R

JSIIA0927GB

HA-22

< BASIC INSPECTION >

LUBRICANT

Lubricant Adjusting Procedure for Compressor Replacement

INFOID:0000000012197117

1. Drain lubricant from removed compressor and measure lubricant amount.

1. Drain lubricant from high-pressure port (A) and low-pres-

sure port (B) while rotating magnet clutch.

2. 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 (2.0 US fl oz, 2.1
Imp fl oz), perform calculation by setting “D” as 40 m (1.4 US fl oz, 1.4 Imp fl oz).

Example: Lubricant amount to be drained from a new compressor when replacing compressor and liquid
tank [m (US fl oz, Imp fl oz)] [D = 60 (2.0, 2.1),

α = 5 (0.2, 0.2)]

120 (4.1, 4.2)

− [60 (2.0, 2.1) + 20 (0.7, 0.7) + 5 (0.2, 0.2) + 5 (0.2, 0.2)] = 30 (1.0, 1.0)

Conditions

Lubricant amount to be added to A/C system

m (US fl oz, Imp fl oz)

Replace evaporator

35 (1.2, 1.2)

Replace condenser

15 (0.5, 0.5)

Replace liquid tank

5 (0.2, 0.2)

Refrigerant leakage is detected

Large amount leakage

30 (1.0, 1.1)

Small amount leakage

—

Lubricant amount that is recycled together with refrigerant during recycle operation

JMIIA0940ZZ

Amount to be drained (A) [m (US fl oz, Imp fl oz)]
= F

− (D + S + R + α)

: Lubricant amount that a new compressor
contains [120 (4.1, 4.2)]

: Lubricant amount that is drained from re-
moved compressor

: Lubricant amount that remains inside of re-
moved compressor [20 (0.7, 0.7)]

: Lubricant amount to be added according to
components that are removed except com-
pressor

: Lubricant amount that is recycled together
with refrigerant during recycle operation

Conditions

Lubricant amount to be added to A/C system

m (US fl oz, Imp fl oz)

Replace evaporator

35 (1.2, 1.2)

Replace condenser

15 (0.5, 0.5)

Replace liquid tank

5 (0.2, 0.2)

JPIIA1455GB

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