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5.3.8 Gas charging
Procedure:
1. Connect the charge hose to the charging cylinder.
Connect the charge hose which you disconnected from the vacuum pump to the
valve at the bottom of the cylinder.If the refrigerant is R410A, make the cylinder bottom up
to ensure liquid charge.
2. Purge the air from the charge hose.
Open the valve at the bottom of the cylinder and press the check valve on the charge
set to purge the air (be careful of the liquid refrigerant).
3. Open the valves (Low side) on the charge set and charge the system with liquid
refrigerant.
If the system cannot be charge with the specified amount of refrigerant, if can be
charged with a little at a time (approximately 150g each time0 while operating the air
conditioner in the cooling cycle; however, one time is not sufficient, wait approximately 1
minute and then repeat the procedure.(pumping down-pin).
