Resource Data Management has introduced a device to protect refrigeration compressors from damage following power outages.
Called Intuitive Power Store, the technology links to the company’s stepper valve controller, to provide protection against compressor damage on start-up following power failure. The combination automatically closes stepper valves when mains power is lost. “It is effectively a mini uninterruptible power supply (UPS) with a brain,” says RDM managing director Andrew Chandler.
In the event of mains power loss, the Power Store provides the energy to enable the stepper valve controller to accurately control the setting of the valve to a fully closed position.
When mains power is restored, stepper valves are then returned to the correct operational settings gradually, in line with the evaporator duty required.
According to the company this means that the compressor is not hit with a large and unpredictable load before it is fully up and running, and in a safe operating condition to respond.
Refrigeration compressors can suffer severe damage following start-up after a power failure as a result of stepper valves being out of sequence and in the wrong place. This can lead to liquid refrigerant entering the compressor crankcase, resulting in low oil pressure and possible failure. Resultant damage can shorten compressor working life or may be so serious that it requires complete replacement.