Nissan Versa

 Sedan Service Manual

Ventilation, heater & air conditioner » Heater & air conditioning system (HA)
Oil

Description

MAINTENANCE OF OIL LEVEL

The compressor oil is circulating in the system together with the refrigerant. It is necessary to fill compressor with oil when replacing A/C system parts or when a large amount of refrigerant leakage is detected. It is important to always maintain oil level within the specified level. Otherwise, the following conditions may occur;

• Insufficient oil amount: Stuck compressor
• Excessive oil amount: Insufficient cooling (caused by insufficient heat exchange)

TYPE : Refer to HA "Oil".

Inspection

If a compressor is malfunctioning (internal noise, insufficient cooling), check the compressor oil.

1.COMPRESSOR OIL JUDGMENT

1. Remove the compressor. Refer to HA "Removal and Installation".
2. Sample compressor oil and judge based on the figure.

Judgement result 1>>Replace compressor only.

Judgement result 2>>Replace compressor and liquid tank.

• Perform Oil Return Operation
• Oil Adjusting Procedure for Compressor Replacement

Precautions

Preparation

Component parts

Refrigeration system

Diagnosis and repair workflow

Refrigerant

Oil

Performance test

Compressor

Condenser

Low-pressure flexible hose

High-pressure flexible hose

High-pressure pipe

Expansion valve

Refrigerant pressure sensor

A/C Unit assembly

Evaporator