Daniels Air

Source: Air Conditioning Today. June 2008.

A feature on the new Trane ComfortLink™ II systems, Charge Assist enables technicians to simply push a button and ensure proper refrigerant charge.  Charge Assist delivers the precise amount of refrigerant before shutting itself off and returning control of the system back to the comfort control.  It can be used when a system is installed, and during routine maintenance, to ensure system reliability.   During maintenance, Charge Assist will indicate if a unit is under or over charged with refrigerant, enabling the technician to add or recover refrigerant and put the system back in balance.  Charge Assist provides a method for automatically adding refrigerant more accurately than has been possible in the past.
Air Conditioning systems that are out of balance result in unnecessary wear and tear on the compressor, impacting reliability as well as energy costs.  Furthermore, the unit may not perform to the stated efficiency rating.  The sophistication of today’s higher efficiency products makes getting a proper charge that much more challenging