RACA Journal March 2020 | Page 58

Projects The ‘ham’ is out of sight of the consumer but remains a vigilant temperature watchdog. SAFETY AND NOISE POLLUTION The CO 2 safety levels, operating parameters, temperature alarms, power usage, cabinet temperatures are all monitored and controlled by the Guardian Controls Plant Management System with visual monitors for management staff and with remote access by senior staff of Mainstream Refrigeration. The RH and ambient temperature in the store is also monitored by the Guardian Controls PMS to keep store management informed of shopper comfort. Being close to the Table Bay Hotel, the noise level of the roof mounted gas coolers at the V&A store was of concern and was overcome by fitting ebmpapst Axitop and EC variable speed fans. The relocation of the food market at the V&A started during the first quarter of 2019 and was commissioned before the end of November. “Replacing 1250kgs of R404A (GWP 3922) with a CO 2 plant at the V&A and all the energy saving features, has provided further proof that CO 2 refrigeration is the best solution to achieve our green policy.” Kuzma concluded. RACA LIST OF PROFESSIONALS Owner V&A Waterfront Refrigeration Contractor Mainstream Refrigeration Product suppliers Cold Room Panelling Insulated Structures CO 2 Rack Manufacturer Mainstream Refrigeration Frascold Compressors Kovco Display Cabinets Colcab Plant Management System Guardian Controls International Cold Room Blowers Thermo Coil EC Fans ebmpapst Cabinet Doors Colcab Gas Cooler Thermo Coil 56 RACA Journal I March 2020 www.hvacronline.co.za