The AK-PC 781 multifunctional pack controller is designed to make it easy to set up energy-efficient capacity control of refrigeration compressors and condensers with modular hardware and flexible software. It constantly optimizes compressors and condensers and offers oil management, heat reclaim, and carbon-dioxide control. Capacity control is available for up to eight compressors, with three unloaders for each compressor. —Danfoss
