Infiniti M45 (Y34). Manual — part 132

PREPARATION

ATC-13

C

D

E

F

G

H

I

K

L

M

A

B

ATC

Tool number
(Kent-Moore No.)
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

KLH00-PAGS0
( - )
Nissan A/C System Oil Type S

Type: Poly alkaline glycol oil (PAG),
type S
Application: HFC-134a (R-134a)
swash (wobble) plate compressors
(Nissan only)

Lubricity: 40 m

(1.4 US fl oz, 1.4 Imp

fl oz)

(J-43600)
Recovery/Recycling
Recharging equipment
(ACR2000)

Function: Refrigerant recovery and
recycling and recharging

(J-41995)
Electrical leak detector

Power supply:

●

DC 12V (Cigarette lighter)

(J-43926)
Refrigerant dye leak detection kit
Kit includes:
(J-42220)
UV lamp and UV safety goggles
(J-41459)
HFC-134a (R-134a) dye injector
Use with J-41447, 1/4 ounce bottle
(J-41447)
HFC-134a (R-134a) fluorescent
leak detection dye
(Box of 24, 1/4 ounce bottles)
(J-43872)
Refrigerant dye cleaner

Power supply:
DC 12V (Battery terminal)

(J-42220)
UV lamp and UV safety goggles

Power supply: DC 12V (Battery
terminal)
For checking refrigerant leak when
fluorescent dye is installed in A/C
system
Includes: UV lamp and UV safety
goggles

S-NT196

S-NT197

WJIA0293E

AHA281A

ZHA200H

SHA438F

ATC-14

PREPARATION

(J-41447)
HFC-134a (R-134a) fluorescent
leak detection dye
(Box of 24, 1/4 ounce bottles)

Application: For HFC-134a (R-134a)
PAG oil
Container: 1/4 ounce (7.4cc) bottle
(Includes self-adhesive dye
identification labels for affixing to
vehicle after charging system with
dye.)

(J-41459)
HFC-134a (R-134a) dye injector
Use with J-41447, 1/4 ounce bottle

For injecting 1/4 ounce of fluorescent
leak detection dye into A/C system

(J-43872)
Refrigerant dye cleaner

For cleaning dye spills

(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 hose: Blue with black stripe

●

High 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.

Tool number
(Kent-Moore No.)
Tool name

Description

SHA439F

SHA440F

SHA441F

RJIA0196E

S-NT201

S-NT202

PREPARATION

ATC-15

C

D

E

F

G

H

I

K

L

M

A

B

ATC

Commercial Service Tools

AJS000VN

(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

S-NT200

S-NT203

Tool name

Description

Refrigerant identifier equipment

Checking for refrigerant purity and
system contamination

Power tool

For loosening bolts and nuts

RJIA0197E

PBIC0190E

ATC-16

REFRIGERATION SYSTEM

REFRIGERATION SYSTEM

PFP:KA990

Refrigerant Cycle

AJS00074

REFRIGERANT FLOW

The refrigerant flows in the standard pattern, that is, through the compressor, the condenser with liquid tank,
through the evaporator, and back to the compressor. The refrigerant evaporation through the evaporator is
controlled by an externally equalized expansion valve, located inside the evaporator case.

FREEZE PROTECTION

Under usual operating conditions, when the A/C is switched on, the compressor runs continuously, and the
evaporator pressure, and therefore, temperature is controlled by the V-6 variable displacement compressor to
prevent freeze up.

Refrigerant System Protection

AJS000BX

REFRIGERANT PRESSURE SENSOR

The refrigerant system is protected against excessively high- or low-pressures by the refrigerant pressure sen-
sor, located on the condenser. If the system pressure rises above, or falls below the specifications, the refrig-
erant pressure sensor detects the pressure inside the refrigerant line and sends the voltage signal to the ECM.
ECM makes the A/C relay go OFF and stops the compressor when pressure on the high-pressure side
detected by refrigerant pressure sensor is over about 2,746 kPa (28 kg/cm

2

, 398 psi), or below about 134 kPa

(1.4 kg/cm

2

, 20 psi).

PRESSURE RELIEF VALVE

The refrigerant system is also protected by a pressure relief valve, located in the rear head of the compressor.
When the pressure of refrigerant in the system increases to an unusual level [more than 3,727 kPa (38 kg/cm

2

, 540 psi)], the release port on the pressure relief valve automatically opens and releases refrigerant into the
atmosphere.

RJIA0849E