250 mm diameter fan (impeller) for a pentavalent refrigeration motor — the universal electric fan motor type used on evaporators, condensing units, refrigerated display cases and cold rooms. Pentavalent motors accept interchangeable fans in different diameters (typically 200/230 mm or 250/300 mm); this is the 250 mm version.

• Diameter: 250 mm
• Use: fits pentavalent refrigeration fan motors

Replacement is needed when the blades are cracked, deformed or unbalanced: typical symptoms are vibration and abnormal motor noise, reduced airflow across the evaporator, uneven frost/ice build-up and a drop in the refrigeration system's cooling efficiency.