Contact with refrigerant can cause frostbite. Keep hands and face away to prevent
Protective face shield and gloves must always be worn when refrigerant lines are opened,
even if gauges indicate A/C system is empty.
Always use caution when disconnecting fittings. Slowly loosen fitting in well-ventilated
Do not smoke when servicing A/C or wherever refrigerant gas may be present.
Failure to follow these warnings may result in injury or death to personnel.
DO NOT charge A/C system with liquid refrigerant through compressor suction ports. This
Charging should be performed at air temperature of 70°F (21°C) and above. Changes in
ambient air temperature will affect A/C system's ability to take charge and will vary gauge
Do not add partial charge to A/C system. Accurate refrigerant charge can only be
determined by weight or by temperature of evaporator core. Always recover refrigerant
then evacuate A/C system before charging.
Operating A/C system periodically during off-season will lubricate seals and reduce
possibility of refrigerant loss.
Up to 7 oz. (200 g) of refrigerant loss per year is considered normal.