AK-PC 782A

AK-PC 782A is the complete control unit for capacity control of compressors and gas coolers in a transcritical CO2 booster system with a parallel compressor. The regulation handles oil, heat recovery and CO2 gas pressure. In addition to power control, the controllers can transmit operation-related signals to other regulators, e.g. forced closure of expansion valves, alarm signals and alarm messages. The main function of the controller is to control compressors and gas cooler so that operation is always optimized. Both suction pressure and condensing pressure is controlled by signals from pressure transmitters.