At Cold Stone Creameries nationwide, GHEA-12R Gelato Display Cases are equipped with two parallel redundant 6000 BTU compressors operating at -20°F to maintain ice cream at 0°F . Often in summer, due to increased cooling load, one of the compressor units will seize and fail. This presents multiple issues to the retailer:
In August 2015, when the problem was first presented to RGEES, LLC by a local Cold Stone Creamery franchise owner in Asheville, NC, engineers at RGEES, LLC proposed utilizing savENRG™ NSF™ -10F Freezer-Packs to provide a total hold-over 6650 BTU capacity. The units were first charged to solid state. They were kept for 24 hrs inside the -20°F flash freezer. Fully charged, they were placed horizontally in the space below the pans as seen in the photo.
The GHEA-12R display case was able to maintain gelato close to +0°F with only a single compressor in operation. Further, with both compressors online and the savENRG™ -10F Freezer-Packs under the gelato pans, the thermostat setting to switch the compressor “ON” was changed to +5°F. This was done to maintain a soft pull to the ice cream in the display. The compressors cycled less frequently and operated at a lower load. This resulted in significantly lower noise in the store and reduced chances of mechanical failure.
Testimonials: “They work amazing and are much better than buying dry ice all the time!” - Josh Christensen, Cold Stone Creamery & Rocky Mountain Chocolate Factory in Logan, Utah
Benefits for the franchise owner: