Lubrication
No routine lubrication is required on AWS units. The fan motor bearings are permanently
lubricated. No further lubrication is required. Excessive fan motor bearing noise is an
indication of a potential bearing failure.
Compressor oil must be ICI RL68HB, McQuay Part Number 735030446 in a 1-gallon
container. This is synthetic polyolester oil with anti-wear additives and is highly hygroscopic.
Care must be taken to minimize exposure of the oil to air when charging oil into the system.
The oil charge is 6 gallons (23 liters) for all compressor sizes.