Nissan Versa

 Sedan Service Manual

Ventilation, heater & air conditioner » Heater & air conditioning system (HA) » Oil
Oil Adjusting Procedure for Compressor Replacement

1.   Drain oil from removed compressor and measure oil amount.

1. Drain oil from high-pressure port (A) and low-pressure port (B) while rotating magnet clutch.

2. Measure total amount of oil that is drained from removed compressor.

2.   Drain oil from a new compressor that is calculated according to the following conditions;

Amount to be drained (A) [m (Imp fl oz.)] = F − (D + S + R + α)

F : Oil amount that a new compressor contains [120 (4.2)]

D : Oil amount that is drained from removed compressor

S : Oil amount that remains inside of removed compressor [20 (0.7)]

R : Oil amount to be added according to components that are removed except compressor

α : Oil amount that is recycled together with refrigerant during recycle operation

CAUTION: If oil amount that is drained from removed compressor is less than 60 m (2.1 Imp fl oz.), perform calculation by setting "D" as 40 m (1.4 Imp fl oz.).               

Example: oil amount to be drained from a new compressor when replacing compressor and liquid tank [m (Imp fl oz.)] [D = 60 (2.1), α = 5 (0.2)] 120 (4.2) − [60 (2.1) + 20 (0.7) + 5 (0.2) + 5 (0.2)] = 30 (1.1)

3.   Install compressor and check the operation.

Perform Oil Return Operation

Oil Adjusting Procedure for Compressor Replacement