Nissan Titan. Manual - part 366

 

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Nissan Titan. Manual - part 366

 

 

REFRIGERATION SYSTEM

HA-15

< SYSTEM DESCRIPTION >

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SYSTEM DESCRIPTION

REFRIGERATION SYSTEM

Refrigerant Cycle

INFOID:0000000009882408

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 coils

are controlled by externally equalized expansion valve, located inside the evaporator case.

Refrigerant System Protection

INFOID:0000000009882409

1.

Pressure relief valve

2.

Compressor

3.

Condenser assembly

4.

Refrigerant pressure sensor

5.

Air mix door

6.

Blower motor

7.

Evaporator

8.

Expansion valve

9.

Liquid Tank

A.

High-pressure gas

B.

High-pressure liquid

C.

Low-pressure liquid

AWIIA1610ZZ

HA-16

< SYSTEM DESCRIPTION >

REFRIGERATION SYSTEM

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 refriger-

ant pressure sensor detects the pressure inside the refrigerant line and sends a voltage signal to the ECM.

The ECM de-energizes the A/C relay to disengage the magnetic compressor clutch 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 120 kPa (1.22 kg/cm

2

, 17.4 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 abnormal level [more than 2,990 kPa (30.5 kg/
cm

2

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

the atmosphere.

D.

Low-pressure gas

E.

Outside air

F.

Recirculation air

G.

Ventilation discharge

REFRIGERATION SYSTEM

HA-17

< SYSTEM DESCRIPTION >

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Component

INFOID:0000000009882410

A/C COMPRESSOR AND CONDENSER

AWIIA1609ZZ

1.

Expansion valve

2.

High-pressure pipe

3.

High-pressure service valve

4.

Condenser seal (RH)

5.

Side seal (RH)

6.

Liquid tank bracket

7.

Junction pipe

8.

Liquid tank

9.

Refrigerant pressure sensor

10.

Grommet

11.

Grommet

12. Side seal (LH)

13.

Condenser assembly

14.

Condenser seal (LH)

15. Compressor

HA-18

< SYSTEM DESCRIPTION >

REFRIGERATION SYSTEM

NOTE:

Refer to 

HA-5, "Precaution for Refrigerant Connection"

.

16.

Low-pressure flexible hose

17.

High-pressure flexible hose

18. Low-pressure service valve

19.

Low-pressure pipe

20.

Drain hose

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