The series was specially developed for the tough operating conditions of a kitchen exhaust fan. Double-walled housing made of galvanized sheet steel for high demands on particularly low noise levels. Conveys medium to large air volumes with high resistance. Insensitive to hot conveying media up to 120° C. Connection nozzles on the suction and pressure side, for direct installation in ventilation ducts, with double sealing lips. With mounting rail and 4 vibration dampers. Fan unit can be swung out for cleaning and maintenance. Motor positioned outside the air flow. With condensate drain when the outlet nozzle points upwards. High-pressure radial impellers with backward-curved blades. Motor: Motor can be controlled by means of voltage reduction using transformers. Thermal contacts are connected to terminals. Full motor protection by external trigger device of type MAICO MVE 10. Protection class IP X4 with closed housing cover and suction and pressure side pipe connection. Speed controllable. Installation instructions: Installation with outlet nozzle pointing upwards, right or left. When installed with the exhaust nozzle pointing to the right or left, the inspection door must be converted on site. Electrical connection: External terminal box with cable gland. Safety instructions: Only operate the fan with free intake or exhaust if the impeller is protected against contact in accordance with DIN EN ISO 13857. To do this, attach a protective grille. Article: EKR 31-2, delivery volume: 3400 m3/h, delivery volumeNominal: 1934 m3/h / in opt. efficiency, pressure pfs, nominal: 716 Pa - in opt. efficiency, speed nNominal: 2723 1/min - in opt. efficiency, speed: 2890 1/min, speed controllable: yes, type of voltage: alternating current, rated voltage: 230 V, mains frequency: 50 Hz, rated power: 722 W / in opt. Efficiency, INom: 3.2 A / im opt. Efficiency, IMax: 4.1 A, Protection class: IP X4, Thermal class: F, Mains cable: 5 / 1.5 mm2, Installation position: vertical / horizontal, Material: sheet steel, galvanized, Housing material: sheet steel, galvanized, Color: silver, Weight: 40.89 kg, Weight with packaging: 51 kg, Fan can be swiveled out: yes, Nominal width: 315 mm, Width: 692 mm, Height: 692 mm, Depth: 568 mm, Width with packaging: 740 mm, Height with packaging: 700 mm, Depth with packaging: 780 mm, Conveyor temperature at IMax: -20 °C to 120 °C, Ambient temperature: 80 °C, Overall efficiency e: 50.8%, Measurement category: A, Efficiency category: static, Efficiency grade N: 62.9, VSD required: no, Year of manufacture: see type plate, Manufacturer name / Official Registration number / place of business of the manufacturer: Maico Elektroapparate-Fabrik GmbH / Register court Freiburg, HRB 601233 / Villingen-Schwenningen, PBEP / delivery volumeBEP / Pfs, BEP: 0.709 kW / 1934 m3/h / 716 Pa, nBEP: 2723 1/min, specific ratio: approx. 1, Information on dismantling and disposal: see assembly instructions, Information on installation, operation and maintenance: see assembly instructions,Items used in the efficiency measurement that are not described by the measurement category: -, IBEP: 3.1 A, Sound power level LWA5: 80 dB(A), DC motor: false