Infiniti F50. Manual - part 120

PRECAUTIONS

ATC-5

ATC

CONTAMINATED REFRIGERANT

If a refrigerant other than pure HFC-134a (R-134a) is identified in a vehicle, your options are:

●

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

●

Explain that recovery of the contaminated refrigerant could damage your service equipment and refriger-
ant supply.

●

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

●

If you choose to perform the repair, recover the refrigerant using only dedicated equipment and contain-
ers. Do not recover contaminated refrigerant into your existing service equipment. If your facility
does not have dedicated recovery equipment, you may contact a local refrigerant product retailer for avail-
able service. This refrigerant 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.

●

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

EJS0008S

WARNING:

●

Do not release refrigerant into the air. Use approved recovery/recycling equipment to capture the
refrigerant every time an air conditioning system is discharged.

●

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

●

Do not store or heat refrigerant containers above 52

C (125

F).

●

Do not 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.

●

Do not intentionally drop, puncture, or incinerate refrigerant containers.

●

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

●

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

●

Do not pressure test or leak test HFC-134a (R-134a) service equipment and/or vehicle air condi-
tioning systems with compressed air during repair. Some mixtures of air and HFC134a (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 refriger-
ant manufacturers.

Lubricant Precautions

EJS0008Y

●

Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) components.
If lubricant other than that specified is used, compressor malfunction is likely to occur.

●

The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The following
handling precautions must be observed:

–

When removing refrigerant components from a vehicle, immediately cap (seal) the component to minimize
the entry of moisture from the atmosphere.

–

When installing refrigerant components to a vehicle, do not remove the caps (unseal) until just before con-
necting the components. Connect all refrigerant loop components as quickly as possible to minimize the
entry of moisture into system.

–

Only use the specified lubricant from a sealed container. Immediately reseal containers of lubricant. With-
out proper sealing, lubricant will become moisture saturated and should not be used.

●

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 meeting require-
ments of SAE J2210 HFC-134a (R-134a) recycling equipment, or J2209 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.

●

Do not allow lubricant (Nissan A/C System Oil Type S) to come in contact with styrofoam parts. Damage
may result.

ATC-6

PRECAUTIONS

Precautions for Refrigerant Connection

EJS0008T

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

●

Expansion valve to cooling unit

●

Refrigerant pressure sensor to liquid tank

FEATURES OF NEW TYPE REFRIGERANT CONNECTION

●

The O-ring has been relocated. It has also been provided with a groove for proper installation. This elimi-
nates the chance 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.

●

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.

SHA815E

PRECAUTIONS

ATC-7

ATC

O-RING AND REFRIGERANT CONNECTION

CAUTION:

The new and former refrigerant connections use different O-ring configurations. Do not confuse O-
rings since they are not interchangeable. If a wrong O-ring is installed, refrigerant will leak at, or
around, the connection.

RJIA1259E

ATC-8

PRECAUTIONS

O-Ring Part Numbers and Specifications

WARNING:

Make sure all refrigerant is discharged into the recycling equipment and the pressure in the system is
less than atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove it.

CAUTION:

When replacing or cleaning refrigerant cycle components, observe the following.

●

When the compressor is removed, store it in the same position as it is when mounted on the car.
Malfunction to do so will cause lubricant to enter the low pressure chamber.

●

When connecting tubes, always use a torque wrench and a back-up wrench.

●

After disconnecting tubes, immediately plug all openings to prevent entry of dirt and moisture.

●

When installing an air conditioner in the vehicle, connect the pipes as the final stage of the opera-
tion. Do not remove the seal caps of pipes and other components until just before required for
connection.

●

Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components.

●

Thoroughly remove moisture from the refrigeration system before charging the refrigerant.

●

Always replace used O-rings.

●

When connecting tube, apply lubricant to circle of the O-rings shown in illustration. Be careful not
to apply lubricant to threaded portion.
Lubricant name: Nissan A/C System Oil Type S
Part number: KLH00-PAGS0

●

O-ring must be closely attached to dented portion of tube.

●

When replacing the O-ring, be careful not to damage O-ring and tube.

●

Connect tube until you hear it click, then tighten the nut or bolt by hand until snug. Make sure that
the O-ring is installed to tube correctly.

Connec-
tion type

O-ring

size

Part number

mm (in)

New

92471 N8210

6.8 (0.268)

1.85 (0.0728)

Former

92470 N8200

6.07 (0.2390)

1.78 (0.0701)

Former

J2476 89956

9.25 (0.3642)

1.78 (0.0701)

New

92472 N8210

10.9 (0.429)

2.43 (0.0957)

Former

92475 71L00

11.0 (0.433)

2.4 (0.094)

New

92473 N8210

13.6 (0.535)

2.43 (0.0957)

Former

92475 72L00

14.3 (0.563)

2.3 (0.091)

New

92474 N8210

16.5 (0.650)

2.43 (0.0957)

Former

92477 N8200

17.12 (0.6740)

1.78 (0.0701)

New

92195 AH300

21.8 (0.858)

2.4 (0.094)

SHA814E

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