How Inverters Work Basics | Air Conditioning

by | Air Conditioning | 2 comments

How Inverters Work Basics - The new way for ultra-efficient air conditioners and heat pumps have modulating compressors and motors. A few years ago it was rare that I got an email asking the question about how inverters work but now I have noticed the question coming more and more so I wanted to write an article to explain how inverters work.

Inverters are used in air conditioning to modulate compressors and fan motors from 100% down to a minimum of 20% although the minimum will vary from manufacturer to manufacturer according to part selection and engineering limitations. To truly understand how inverters work one has to have a basic understanding of electronics. (more…)

Old McQuay Chiller Control Panel | Electro-Mechanical Controls

by | Commercial HVAC | 0 comments

Old McQuay Chiller Control Panel – Electro-Mechanical ControlsOld McQuay Chiller Control Panel - This panel is part of the controls for an older McQuay chiller. New chillers whether they be McQuay, Trane, York, or Carrier chillers still require these types of controls in them to make them work.

This part of this electro-mechanical control panel consists of contactors and switches (both manual and automatic) for electro-mechanical control of this chiller. To the right is the main power which feeds the unit with three-phase main power. (more…)