DYNEO DD refrigerated circulators have a wide working temperature range. Refrigerated circulators are suitable for both internal and external applications. The multilingual 3. 5-inch color display and unique rotary knob provide for straightforward and intuitive operation. Pump capacity is 22 l/min with pressure of 0. 6 bar. The cooling machines operate precisely and reliably even at elevated ambient temperatures up to +40 °C.