Nissan Qashqai J11. Manual - part 1057

HA-54

< PRECAUTION >

[TYPE 2]

PRECAUTIONS

• Perform leakage test and make sure that there is no leakage from connections after connecting line.

Disconnect that line and replace the O-ring when the refrigerant leaking point is found. Then tighten
connections of seal seat to the specified torque.

COMPRESSOR

CAUTION:

• Plug all openings to prevent moisture and foreign matter from entering.
• Store it in the same way at it is when mounted on the car when the compressor is removed.
• Follow “Maintenance of Lubricant Quantity in Compressor” exactly when replacing or repairing

compressor. Refer to

HA-66, "Description"

• Keep friction surfaces between clutch and pulley clean. Wipe it off by using a clean waste cloth

moistened with thinner if the surface is contaminated with lubricant.

• Turn the compressor shaft by hand more than five turns in both directions after compressor service

operation. This distributes equally lubricant inside the compressor. Let the engine idle and operate
the compressor for one hour after the compressor is installed.

• Apply voltage to the new one and check for normal operation after replacing the compressor magnet

clutch.

Service Equipment

INFOID:0000000010501583

RECOVERY/RECYCLING RECHARGING EQUIPMENT

Be certain to follow the manufacturer’s instructions for machine operation and machine maintenance. Never
introduce any refrigerant other than that specified into the machine.

ELECTRICAL LEAK DETECTOR

Be certain to follow the manufacturer’s instructions for tester operation and tester maintenance.

VACUUM PUMP

RHA861F

PRECAUTIONS

HA-55

< PRECAUTION >

[TYPE 2]

The lubricant contained inside the vacuum pump is not compatible
with the specified lubricant for HFO-1234yf (R-1234yf) A/C systems.
The vent side of the vacuum pump is exposed to atmospheric pres-
sure. So the vacuum pump lubricant may migrate out of the pump
into the service hose. This is possible when the pump is switched
OFF after evacuation (vacuuming) and hose is connected to it.
To prevent this migration, use a manual valve placed near the hose-
to-pump connection, as per the following.
• Vacuum pumps usually have a manual isolator valve as part of the

pump. Close this valve to isolate the service hose from the pump.

• Use a hose equipped with a manual shut-off valve near the pump

end for pumps without an isolator. Close the valve to isolate the
hose from the pump.

• Disconnect the hose from the pump if the hose has an automatic

shut-off valve. As long as the hose is connected, the valve is open
and lubricating oil may migrate.

Some one-way valves open when vacuum is applied and close
under no vacuum condition. Such valves may restrict the pump’s
ability to pull a deep vacuum and are not recommended.

MANIFOLD GAUGE SET

Be certain that the gauge face indicates HFO-1234yf or R-1234yf. Be sure the gauge set has 1/2

″

-16 ACME

threaded connections for service hoses. Confirm the set has been used only with refrigerant HFO-1234yf (R-
1234yf) and specified lubricants.

SERVICE HOSES

Be certain that the service hoses display the markings described. All hoses must equip positive shut-off
devices (either manual or automatic) near the end of the hoses opposite to the manifold gauge.

SERVICE COUPLERS

Never attempt to connect HFO-1234yf (R-1234yf) service couplers
to the CFC-12 (R-12) and HFC-134a (R-134a) A/C system. The
HFO-1234yf (R-1234yf) couplers do not properly connect to the
CFC-12 (R-12) and HFC-134a (R-134a) system. However, if an
improper connection is attempted, discharging and contamination
may occur.

REFRIGERANT WEIGHT SCALE

Verify that no refrigerant other than HFO-1234yf (R-1234yf) and specified lubricants have been used with the
scale. The hose fitting must be 1/2

″

-16 ACME if the scale controls refrigerant flow electronically.

CHARGING CYLINDER

Using a charging cylinder is not recommended. Refrigerant may be vented into air from cylinder’s top valve
when filling the cylinder with refrigerant. Also, the accuracy of the cylinder is generally less than that of an
electronic scale or of quality recycle/recharge equipment.

RHA270DA

Shut-off valve rotation

A/C service valve

Clockwise

Open

Counterclockwise

RHA273D

HA-56

< PREPARATION >

[TYPE 2]

PREPARATION

PREPARATION

Commercial Service Tools

INFOID:0000000010501574

HFO-1234yf (R-1234yf) Service Tool and Equipment

• Never mix HFO-1234yf (R-1234yf) refrigerant and/or its specified lubricant with CFC-12 (R-12) and HFC-

134a (R-134a) refrigerant and/or its lubricant.

• Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/

lubricant.

• Refrigerant container fittings, service hose fittings and service equipment fittings (equipment which handles

refrigerant and/or lubricant) are different between CFC-12 (R-12), HFC-134a (R-134a) and HFO-1234yf (R-
1234yf). This is to avoid mixed use of the refrigerants/lubricant.

• Never use adapters that convert one size fitting to another: refrigerant/lubricant contamination occurs and

compressor malfunction may result.

Tool name

Description

Recovery/recycling/recharg-
ing equipment

Function:
• Refrigerant recovery, recycling and re-

charging

• Compliant with HFO-1234yf (R-1234yf)

Electrical leak detector

Power supply:
DC 12 V (Cigarette lighter)

Manifold gauge set (with hos-
es and couplers)

Identification:
• The gauge face indicates HFO-1234yf

(R-1234yf).

Fitting size: Thread size

• 1/2

″

-16 ACME

RJIA0195E

SHA705EB

RJIA0196E

PREPARATION

HA-57

< PREPARATION >

[TYPE 2]

Sealant or/and Lubricant

INFOID:0000000010501575

HFO-1234yf (R-1234yf) Service Tool and Equipment

• Never mix HFO-1234yf (R-1234yf) refrigerant and/or its specified lubricant with CFC-12 (R-12) and HFC-

134a (R-134a) refrigerant and/or its lubricant.

• Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/

lubricant.

• Refrigerant container fittings, service hose fittings and service equipment fittings (equipment which handles

refrigerant and/or lubricant) are different between CFC-12 (R-12), HFC-134a (R-134a) and HFO-1234yf (R-
1234yf). This is to avoid mixed use of the refrigerants/lubricant.

• Never use adapters that convert one size fitting to another: refrigerant/lubricant contamination occurs and

compressor malfunction may result.

Service hoses
• High-pressure side hose
• Low-pressure side hose
• Utility hose

Hose fitting to gauge:

• 1/2

″

-16 ACME

Compliant with HFO-1234yf (R-1234yf)

Service couplers
• High-pressure side coupler
• Low-pressure side coupler

Hose fitting to service hose:
M14 x 1.5 fitting is optional or permanently
attached.
Compliant with HFO-1234yf (R-1234yf)

Refrigerant weight scale

For measuring of refrigerant
Fitting size: Thread size

1/2

″

-16 ACME

Compliant with HFO-1234yf (R-1234yf)

Vacuum pump
(Including the isolator valve)

Capacity:
• Air displacement: 4 CFM
• Micron rating: 20 microns
• Oil capacity: 482 g (17 oz.)
Fitting size: Thread size

• 1/2

″

-16 ACME

Compliant with HFO-1234yf (R-1234yf)

Tool name

Description

S-NT201

S-NT202

S-NT200

S-NT203

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