Nissan Sentra B18 (2020-2025) Service Manual: Charge Refrigerant

Charge Refrigerant

Warning:

• Always use HFO-1234yf (R-1234yf) for A/C refrigerant. If HFC-134a (R-134a) or CFC-12 (R-12) is accidentally charged, compressor is damaged due to insufficient lubrication.

• Always observe and follow precautions described on refrigerant container. Incorrect handling may result in an explosion of refrigerant container, frostbite, or the loss of eyesight.

• Do not breathe A/C refrigerant and oil vapor or mist. Exposure my irritate eyes, nose, or throat.

• Do not allow HFO-1234yf (R-1234yf) to be exposed to an open flame or others because it generates poisonous gas when in contact with high temperature objects. Keep workshop well ventilated.

Connect recovery/recycling/recharging equipment to the A/C service valve.

Operate recovery/recycling/recharging equipment, and evacuate air from A/C system for 25 minutes or more.

CAUTION:

Evacuate air for 15 minutes or more if the parts are replaced.

Check the airtightness of A/C system for 25 minutes or more. If pressure raises more than the specified level, charge A/C system with approximately 200g refrigerant and check that there is no refrigerant leak. Refer to Leak Test.

CAUTION:

Check the airtightness for 15 minutes or more if the parts are replaced.

If parts other than compressor are replaced, fill compressor oil according to parts that are replaced.

Charge the specified amount of refrigerant to A/C system.

Check that A/C system operates normally.

Disconnect recovery/recycling/recharging equipment. (Collect the refrigerant from the high-pressure hose and low-pressure hose of recovery/recycling/recharging equipment.)

Install A/C service valve cap.

Refrigerant charge is complete.

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