Suzuki Wagon R Manual page 3628

Refrigerant Recovery
When discharging refrigerant out of A/C system, always recover it
by using refrigerant recovery and recycling equipment.
Discharging it into atmosphere would cause adverse effect to
environments.
NOTE:
When handling recovery and recycling equipment, be
sure to follow the instruction manual for the equipment.
Evacuating and Charging
CAUTION:
Because the sight glass is not used for this A/C system,
do not perform an additional charge to the A/C system.
To charge the proper amount of refrigerant, recover and
evacuate the A/C system first. And then, charge the
proper amount of refrigerant into the A/C system.
Refer to AIR CONDITIONING BASIC MANUAL (99520-02130).
Z10XEP and Z12XEP Engine Models
Specified amount of refrigerant: 500 g
Z13DT Engine Model
Specified amount of refrigerant: 480 ± 30 g
[A]: Vehicle with gasoline engine
[B]: Vehicle with diesel engine
1. Manifold gauge set
2. Low pressure gauge
3. High pressure gauge
4. Recovery equipment
5. High pressure service valve
6. Low pressure service valve
Replenishing compressor oil
Z10XEP and Z12XEP Engine Models
It is necessary to replenish specified amount of compressor oil to
compressor (1) from compressor suction side hole (2) before
evacuating and charging refrigerant.
AIR CONDITIONING (OPTIONAL) 1B-9