Although the average service life of a blast chiller can vary depending on use, environment and manufacturer, most last between 5 and 10 years.
Because temperature consistency is key for Hazard Analysis and Critical Control Point (HACCP) reporting, properly maintaining blast chillers is important from a safety standpoint. Fortunately, there are specific steps operators can take to prolong the service life of these units and keep systems in safe operating condition.
Like most refrigeration equipment, blast chillers are simple to clean and maintain. On a weekly basis or as needed, the inside of the cabinet should be thoroughly cleaned with lukewarm water and detergent. At this time, door gaskets should be washed with water and wiped thoroughly with a dry cloth.
Dust and dirt should be removed from the condenser at least monthly using non-metal brushes to avoid damage. If drain lines are utilized, these should be kept clean of condensate water to prevent backups.
Unlike traditional refrigeration, blast chillers are not designed for continuous operation. For this reason, the units should be shut off when not in use.
While most refrigeration equipment can be fixed, there are signs operators should look for that indicate a blast chiller may need replacement. Note that there are rarely signs that a breakdown is imminent.
If the unit is chilling inconsistently by either not cooling as quickly or thoroughly as it has in the past, operators should make sure the condenser is clean. If this is not the issue, the blast chiller may be reaching the end of its service life, warranting replacement.
Older blast chillers or units used in high-volume operations may warrant replacement when repairs are frequent and/or become pricey.
