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Nissan Juke F15. Manual - part 832

PREPARATION

HA-11

< PREPARATION >

(J-39183)
Manifold gauge set (with hoses
and couplers)

Identification:
• The gauge face indicates HFC-134a (R-

134a).

Fitting size: Thread size
• 1/2

″

-16 ACME

Service hoses
• High-pressure side hose

(J-39501-72)

• Low-pressure side hose

(J-39502-72)

• Utility hose

(J-39476-72)

Hose color:
• Low-pressure side hose: Blue with black

stripe

• High-pressure side hose: Red with black

stripe

• Utility hose: Yellow with black stripe or

green with black stripe

Hose fitting to gauge:
• 1/2

″

-16 ACME

Service couplers
• High-pressure side coupler

(J-39500-20)

• Low-pressure side coupler

(J-39500-24)

Hose fitting to service hose:
M14 x 1.5 fitting is optional or permanently
attached.

(J-39650)
Refrigerant weight scale

For measuring of refrigerant
Fitting size: Thread size
1/2

″

-16 ACME

(J-39649)
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

Tool number

(Kent-Moore No.)

Tool name

Description

RJIA0196E

S-NT201

S-NT202

S-NT200

S-NT203

HA-12

< PREPARATION >

PREPARATION

Commercial Service Tool

INFOID:0000000012197102

Sealant or/and Lubricant

INFOID:0000000012197103

HFC-134a (R-134a) Service Tool and Equipment

• Never mix HFC-134a (R-134a) refrigerant and/or its specified lubricant with CFC-12 (R-12) 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) and HFC-134a (R-134a). 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

Refrigerant identifier equipment

Checking for refrigerant purity and
system contamination

RJIA0197E

Tool name

Description

HFC-134a (R-134a) refrigerant

Container color: Light blue
Container marking: HFC-134a (R-
134a)
Fitting size: Thread size
• Large container 1/2

″

-16 ACME

A/C system Oil Type R (DH-PR)

Type: Polyalkylene glycol oil (PAG),
type R (DH-PR)
Application:
HFC-134a (R-134a) swash plate com-
pressors
Capacity: 40 m (1.4 US fl oz, 1.4 Imp
fl oz)

S-NT196

JMIIA1759ZZ

COMPONENT PARTS

HA-13

< SYSTEM DESCRIPTION >

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000012197104

Component Description

INFOID:0000000012197105

JMIIA1124ZZ

Expansion valve

Condenser

Compressor

Liquid tank

Refrigerant pressure sensor

Evaporator

Built-in A/C unit assembly

Component

Description

Evaporator

The mist form liquid refrigerant transforms to gas by evaporation by the air conveyed from blower
motor. The air is cooled by the heat by evaporation.

Condenser

Cools refrigerant discharged from compressor, and transforms it to liquid refrigerant.

Compressor

Intakes, compresses, and discharges refrigerant, to circulate refrigerant inside the refrigerant cycle.

Refrigerant pressure sensor

Refer to

HAC-10, "Refrigerant Pressure Sensor"

(Automatic air conditioning) or

HAC-107, "Refriger-

ant Pressure Sensor"

(Manual air conditioning).

Liquid tank

Eliminates foreign matter in refrigerant, and stores temporarily liquid refrigerant.

Expansion valve

Transforms high-pressure liquid refrigerant to mist form low-pressure liquid refrigerant by drawing
function.

HA-14

< SYSTEM DESCRIPTION >

SYSTEM

SYSTEM

System Diagram

INFOID:0000000012197106

System Description

INFOID:0000000012197107

REFRIGERANT CYCLE

Refrigerant Flow

The refrigerant from the compressor, flows the condenser with liquid tank, the evaporator, and returns to the

compressor. The refrigerant evaporation in the evaporator is controlled by an expansion valve.

Freeze Protection

When evaporator fin temperature is low, compressor stops so that freeze of evaporator can be prevented.

• Refer to

HAC-15, "Compressor Control"

. (Automatic air conditioning)

• Refer to

HAC-108, "Compressor Control"

. (Manual air conditioning)

REFRIGERANT SYSTEM PROTECTION

Refrigerant Pressure Sensor

• The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure

sensor, installed at the upper liquid tank. The refrigerant pressure sensor detects the pressure inside the

refrigerant line and sends the voltage signal to the ECM if the system pressure rises above, or falls below

the specifications.

• ECM turns the A/C relay to OFF and stops the compressor when the high-pressure side detected by refriger-

ant pressure sensor is following conditions;

- Approximately 3,120 kPa (31.8 kg/cm

, 452 psi) or more (Engine speed is less than 1,500 rpm.)

- Approximately 2,740 kPa (27.9 kg/cm

, 397 psi) or more (Engine speed is 1,500 rpm or more.)

- Approximately 140 kPa (1.4 kg/cm

, 17 psi) or less

Pressure Relief Valve

The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.

The release port on the pressure relief valve automatically opens and releases refrigerant into the atmosphere

when the pressure of refrigerant in the system increases to an unusual level [more than 3,800 kPa (38.8 kg/
cm

, 551 psi)].

JPIIA1366GB

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