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Is your commercial refrigerator no longer cooling as well as it used to? Is food going bad or developing unusual odours? These are signs of a reduction in the refrigerator's cooling capacity. Failure to address this problem can lead to food spoilage and wastage. Thus, fix the following problems that often affect the cooling efficiency of commercial refrigeration systems.

Insufficient refrigerant

One of the primary culprits of refrigeration issues is refrigerant. This fluid runs through the cooling system and draws heat from the fridge, creating a suitable environment for food storage. During the cooling cycle, the refrigerant moves between liquid and gaseous states. Therefore, if there's a leak along the line or in the compressor, gaseous refrigerant can escape. This leaves little refrigerant to cool the system, resulting in reduced cooling capacity. 

Refrigerant issues don't occur out of the blue. If your refrigerator is low on refrigerant, there's a chance someone punctured the cooling lines with a sharp object when taking out food or defrosting the freezer. Luckily, you can repair the punctured lines and refill the refrigerant to restore the cooling capacity of the system.

Defective compressor

The compressor facilitates the cooling process by pumping refrigerant throughout the system. As the refrigerant draws heat from the freezer, it turns into a gas and circulates back to the compressor, where it is compressed, heated and pumped to the condenser coil for cooling. A defective compressor may be unable to facilitate this process efficiently, leading to inefficient cooling.

If your refrigerator suddenly feels too hot to the touch, you probably have a defective compressor. A faulty compressor may also produce loud buzzing or humming sounds. Replace it to restore the functioning of your refrigerator.

Frozen evaporator coil

The evaporator coil sits at the back of the refrigeration system. With the help of the evaporator fan, it draws cool air from the surroundings and cools the refrigerant. During this process, the moisture in the warm air is left on the coil, and it can cause the coil to freeze. If the defrost system isn't working correctly, frost may accumulate on the coil, affecting its performance.

Frozen coils may continue to cool your refrigerator for a short period. However, once frost builds up on the coils, they won't cool the refrigerant properly. This leads to a reduction in the freezer's cooling capacity. As you fix the condenser unit, check the defrost thermostat for faults.

Commercial refrigerators must maintain their cooling capacity to preserve food products. If your equipment is no longer working efficiently, contact a refrigeration professional for refrigeration repairs.