Precaution for Charging
The charging refrigerant must be performed according to Operation Procedure for Refrigerant Charging . Also, the refrigerant amount checking must be performed according to Quick Checking of Refrigerant Charge or A/C System Performance Inspection .
Because, in the sub-cool system, the point at which bubbles disappear is before the stable cooling performance region. If the charging of the refrigerant is stopped at the point in which bubbles disappear, it will be in insufficient charged region. Also, overcharging causes air-conditioning ability and fuel consumption aggravation.