Infiniti M35/M45 Y50. Manual - part 114

PRECAUTIONS

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CONTAMINATED REFRIGERANT

If a refrigerant other than pure HFC-134a (R-134a) is identified in a vehicle, take appropriate steps
shown below:

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Explain to the customer that environmental regulations prohibit the release of contaminated refrigerant
into the atmosphere.

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Explain that recovery of the contaminated refrigerant could damage service equipment and refrigerant
supply.

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Suggest the customer return the vehicle to the location of previous service where the contamination may
have occurred.

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In case of repairing, recover the refrigerant using only dedicated equipment and containers. Never
recover contaminated refrigerant into the existing service equipment.  If the facility does not have
dedicated recovery equipment, contact a local refrigerant product retailer for available service. This refrig-
erant must be disposed of in accordance with all federal and local regulations. In addition, replacement of
all refrigerant system components on the vehicle is recommended.

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If the vehicle is within the warranty period, the air conditioner warranty is void. Please contact Nissan Cus-
tomer Affairs for further assistance.

General Refrigerant Precautions

NJS000FR

WARNING:

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Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Remove HFC-134a (R-134a) from the A/C system, using certified service equipment meet-
ing requirements of SAE J-2210 [HFC-134a (R-134a) recycling equipment], or J-2209 [HFC-134a (R-
134a) recovery equipment]. If accidental system discharge occurs, ventilate work area before
resuming service. Additional health and safety information may be obtained from refrigerant and
lubricant manufacturers.

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Never release refrigerant into the air. Use approved recovery/recycling equipment to capture the
refrigerant every time an air conditioning system is discharged.

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Always wear eye and hand protection (goggles and gloves) when working with any refrigerant or
air conditioning system.

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Never store or heat refrigerant containers above 52

°

C (126

°

F).

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Never heat a refrigerant container with an open flame; if container warming is required, place the
bottom of the container in a warm pail of water.

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Never intentionally drop, puncture, or incinerate refrigerant containers.

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Keep refrigerant away from open flames: poisonous gas will be produced if refrigerant burns.

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Refrigerant will displace oxygen, therefore be certain to work in well ventilated areas to prevent
suffocation.

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Never pressure test or leak test HFC-134a (R-134a) service equipment and/or vehicle air condition-
ing systems with compressed air during repair. Some mixtures of air and HFC-134a (R-134a) have
been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause injury
or property damage. Additional health and safety information may be obtained from refrigerant
manufacturers.

Precautions for Refrigerant Connection

NJS000FS

A new type refrigerant connection has been introduced to all refrigerant lines except the following location.

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Expansion valve to evaporator

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Refrigerant pressure sensor to liquid tank

ABOUT ONE-TOUCH JOINT
Description

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One-touch joints are pipe joints which do not require tools during piping connection.

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Unlike conventional connection methods using union nuts and flanges, controlling tightening torque at
connection point is not necessary.

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When removing a pipe joint, use a disconnector.

ATC-8

PRECAUTIONS

COMPONENT PARTS

FUNCTIONS OF COMPONENT PARTS

NOTE:

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Garter spring (2) cannot be removed from cage (A) of male-side piping.

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Indicator ring (3) remains near piping connection point, however, this is not a malfunction. (This is to
check piping connection during factory assembly.)

REMOVAL

1.

Clean piping connection point, and set a disconnector.

1

Pipe (Male side)

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Retains O-rings (4).

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Retains garter spring (2) in cage (A).

2

Garter spring

Anchors female side piping (5).

3

Indicator ring

When connection is made properly, this is ejected from male-side piping (1). (This part is no longer 
necessary after connection.)

4

O-ring

Seals connection point. (Not reusable)

5

Pipe (Female side)

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Seals connection by compressing O-rings (4).

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Anchors piping connection using flare (B) and garter spring (2).

RJIA4383J

SJIA0106E

PRECAUTIONS

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ATC

2.

Slide disconnector in axial direction of piping, and stretch garter spring with tapered point of disconnector.

3.

Slide disconnector farther so that inside diameter of garter spring becomes larger than outside diameter of
female-side piping flare. Then male-side piping can be disconnected.

INSTALLATION

1.

Clean piping connection points, and insert male-side piping into female-side piping.

2.

Push inserted male-side piping harder so that female-side piping flare stretches garter spring.

3.

If inside diameter of garter spring becomes larger than outside diameter of female-side piping flare, garter
spring seats on flare. Then, it fits in between male-side piping cage and female-side piping flare to anchor
piping connection point.

NOTE:
When garter spring seats on flare, and fits in between male-side piping cage and female-side piping flare,
it clicks.

CAUTION:

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Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping
straight in axial direction.

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Insert piping securely until a click is heard.

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After piping connection is completed, pull male-side piping by hand to make sure that connec-
tion does not come loose.

NOTE:
One-touch joint connection is used in points below.

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Low-pressure flexible hose to low-pressure pipe 1 (O-ring size: 16)

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High-pressure flexible hose to condenser (O-ring size: 12)

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High-pressure pipe 1 to high-pressure pipe 2 (O-ring size: 8)

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High-pressure pipe 1 to condenser (O-ring size: 8)

SJIA0107E

ATC-10

PRECAUTIONS

FEATURES OF NEW TYPE REFRIGERANT CONNECTION

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The O-ring has been relocated. It has also been provided with a groove for proper installation. This elimi-
nates the possibility of the O-ring being caught in, or damaged by, the mating part. The sealing direction of
the O-ring is now set vertically in relation to the contacting surface of the mating part to improve sealing
characteristics.

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The reaction force of the O-ring will not occur in the direction that causes the joint to pull out, thereby facil-
itating piping connections.

O-RING AND REFRIGERANT CONNECTION
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