Your McQuay HSA chiller is a significant investment. To protect that investment and ensure minimal downtime, you need the best information available. Don't settle for a blurry PDF scan from the 1990s if your unit was manufactured in 2005.

The (often associated with the single-screw Stargate™ technology) is a robust line of compressors found in AGS and WGS chillers. Because these are semi-hermetic units, they technically require no yearly internal maintenance, but their longevity depends heavily on external system health. Core Maintenance Pillars

The McQuay HSA is a . Unlike reciprocating compressors, which beat refrigerant into submission, the HSA uses two intermeshing rotors (male and female) to continuously trap, compress, and discharge refrigerant gas. This design offers:

. Proper servicing is critical to maintaining its inherent 3–4x longer bearing life compared to twin-screw alternatives.