Calculating a proper system oil charge on a NetworkAIR FM.
Network Air FM
Please see attachment for assistance with calculating a proper system oil charge on a NetworkAIR FM.
Note that these unit utilize R22 Refrigerant and Mineral oil will be the oil of choice. If a system requires over 30lbs of refrigerant additional oil will be required to ensure proper oil return of the system. During normal operation the oil level should be slighly above 1/2 of the sight glass. Ensure the oil is clean and free of acid if the sightglass should become discolored.