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Explaining Temperature Differentials in Commercial Refrigeration

Apr 8

On a commercial refrigeration unit, the temperature displayed will fluctuate and this is normal.  The refrigeration system is designed to reach the ‘set’ required temperature then stop.  The refrigeration system then rests until the temperature within the cabinet reaches a pre-set temperature differential from the set temperature.  For example, a fridge may be set at 2°C with a temperature differential of 3°C.  When the unit reaches 2°C the refrigeration system stops.  (Note The temperature display may continue to go lower as the air inside the cabinet settles).  When the temperature of the air around the probe within the cabinet rises to 3°C higher than the set temperature, i.e. 5°C, the refrigeration cycle starts again.  The small drop in the air temperature inside the unit does not overly affect the temperature of the chilled or frozen product.  

A temperature differential is important as it is used to prevent short cycles of the compressor system.  Short cycling uses more energy and can cause premature electrical problems and reduce the life of the product.

The temperature differential is not brand specific and applies to all commercial fridges, freezers, ice makers and other refrigeration equipment. Even Bar Coolers will experience the same fluctuations, this is completely normal!

Originially Published at https://restaurantequipment.com.au/