How do I determine the proper amount of lubricant and refrigerant to charge during air purging?

The proper amount of lubricant and refrigerant to charge during air purging depends on the system’s specifications, manufacturer’s recommendations, and the type of refrigerant used. It is essential to consult the system’s documentation and follow the manufacturer’s guidelines to ensure the correct charge amount. Overcharging or undercharging can lead to system malfunctions, reduced performance, and safety risks.