Static refrigeration systems These fridges and freezers are not fan-forced. Reasons that manufactures use static systems include:
  • A fan can be a potential spark source and therefore is typically not used in spark safe fridges and freezers
  • Manual defrost freezers typically aren't fan-forced as the evaporator pipework is spread throughout the entire freezer compartment instead of just at the top as in an auto-defrost freezer. Hence there is greater temperature uniformity and no need to circulate the air with a fan.
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