The DFE series air coolers with two air discharge openings are designed for refrigeration chambers with limited height, intended for the storage of fresh or frozen products. These models are equipped with two-speed fan motors, allowing them to operate in normal or reduced ventilation mode (to reduce noise). The entire series is equipped with high-efficiency coils designed for use with new-generation refrigerants. These coils are made of copper tubes with internal fins and aluminum fins with a special profile.
Based on the chamber's temperature requirements, the series is divided into the following configurations:
• DFE H3 for high temperatures (≥ +2 ° C) with a fin spacing of 3.5 mm.
• DFE L7 for low temperatures (≥ -25 ° C) with a fin spacing of 7.0 mm, recommended for electric defrost (ED).
The two-speed fan motors have the following characteristics:
• Diameter: 315 mm, external rotor, powered by single-phase voltage of 230 V, 50-60 Hz, built-in capacitor, reinforced fiberglass polyamide protective grille.
• IP 44 protection rating.
• Insulation class F.
• Built-in thermal protection relay.
• Maximum operating temperature: +40 ° C.
Additionally, optional high-efficiency EC fans with dual speeds have the following features:
• Diameter: 30 mm.
• IP 54 protection rating.
• Insulation class B.
• Built-in electronic protection.
• Operating temperature range: -25 / +60 ° C.
Models with the standard electric defrost system (ED) are equipped with stainless steel heaters with rubber-coated tips for three-phase voltage of 400 V, 50-60 Hz.
The electrical equipment and housing are connected to grounding terminals, and the wires of the motors and heaters are connected to separate junction boxes with an IP 54 protection rating.
Upon request, these models can be equipped with special coils, defrost systems, and fan motors.