Walk In Freezer Evaporator Frozen

If airflow is blocked you ll end up with a frozen coil.

Walk in freezer evaporator frozen.

Using dairy as an example after the cows are milked their milk is pasteurized and rapidly chilled. A frozen evaporator coil from improper defrosting. If you notice ice build up around your evaporator coil your freezer may be experiencing a fan delay relay failure. In this article we re going to talk more about what causes this phenomenon and what you should do if this happens to your air conditioning unit.

Refrigeration is important for maintaining a proper unbroken cold chain. Defrost your refrigerator when frost builds up on the evaporator coils and in the freezer compartment. Move any boxes or equipment that may have been moved in front of the evaporator return. Just like any refrigeration system walk in coolers use an evaporator inside the unit and a condenser outside the unit to move heat outside thus cooling the inside.

Walk in freezers are common in restaurants grocery stores and other foodservice businesses because they convert empty space into usable storage area. One popular method of defrosting walk in freezers is the electric defrost system. This was a service call on an iced up walk in freezer evaporator coil. Moisture from the air freezes onto the evaporator coils the cooling coils in the freezer and forms an insulating barrier to heat transfer.

Once i got the coil defrosted we found that the cause was the food delivery driver lea. Improper air flow check to make sure there is nothing blocking the return air vent this is the opening where the air goes across the evaporator coil and returns to the unit. Airflow also decreases as the passages narrow due to ice buildup. The door gasket prevents air from leaking into or out of the freezer.

Place the ice cubes from the freezer compartment into a cooler remove the food from the. As it turns out you have a frozen evaporator coil. You walk outside to inspect the outdoor unit and you re greeted by a strange sight. Each evaporator has a defrost cycle to melt frost ice that has built up on the evaporator coils.

Clogs cause water to pool and freeze over time. When this humid air passes over the cold evaporator coils it condenses and freezes on the coils. If the door gasket is torn or not creating a reliable seal or if the freezer is not shut tightly humid air can leak into the freezer. This is something an experienced technician can diagnose and repair.