The protection system is the "safety barrier" of cold storage units. Among them, unreasonable protection parameter settings and imperfect phase loss/overload protection are core hidden dangers that easily cause equipment failures and even safety accidents, directly related to the operational safety and service life of the unit.

         Unreasonable protection parameter settings will make the protection system unable to play its role accurately. Excessively high parameters cannot trigger protection in a timely manner, leaving the unit in an overloaded operation state for a long time; excessively low parameters are prone to false protection triggers, causing frequent unit shutdowns and affecting refrigeration continuity.

         Imperfect phase loss and overload protection cannot effectively respond to power abnormalities and unit overload problems. Phase loss operation will burn out the core components of the motor, while overload will intensify the wear of components such as compressors and fans. Both may cause equipment damage and system paralysis, increasing maintenance costs.

         Such hidden dangers are easy to be ignored, but they will damage the operational safety and stability of the unit. It is necessary to scientifically set protection parameters, improve the phase loss and overload protection mechanism, regularly check the effectiveness of the protection system, eliminate protection failure problems, and lay a solid safety line for cold storage units.