Pipe sleeve made of galvanized sheet steel, with flange on both sides. 8-blade impeller made of glass fiber reinforced polyamide. Dynamically weighted in 2 levels, according to quality level 6.3, DIN ISO 1940, part 1. Flange holes according to DIN EN 12220:1998. DZR 56/6 B and DZR 56/4 B: Flange holes according to DIN EN 12220:1998. To avoid vibration transfer to the pipe system: Use elastic connecting joints, feet and vibration dampers. High protection class IP 55. EZR/DZR exception... D IP 54 Installation possible in every position. Motor: Induction motor, variable speed. Exception: Type DZR 40/2 B. Not suitable for the conveyance of water-vapor-saturated air. Direction of conveyance is marked on the device with direction of rotation and direction of conveyance arrows. Reverse mode: The volume flow is reduced by approx. 35% with abnormal direction of delivery. Three-phase motor: Type series DZR. Rated voltage 400 V, 50 Hz. Standard thermal overload protection. Exception: Available on request at DZR 25/4 D and pole-reversible axial pipe fans. The connections are floating on terminals and must be connected to a motor circuit breaker, e.g. MV 25 or the control circuit of a contactor. Fan switches between terminals: Overload protection is ensured by the customer side with a motor circuit breaker. Electrical connection: Outer-lying terminal box with cable sleeves. Safety instructions: The fan may only be put into operation if the contact protection of the impeller in accordance with DIN EN ISO 13857 is ensured.Article: DZR 25/2 B, displacement volume: 2190 m3/h, displacement volume: 1580 m3/h / in opt. Efficiency, pressure PFS, nominal: 137 Pa - in the opt. Efficiency, speed nNominal: 2280 1/min - in opt. Efficiency, speed: 2913 1 rpm, wheel type: Axial, controllable speed: Yes, reversability: Yes, Type of voltage: three-phase, rated voltage: 400 V, mains frequency: 50 Hz, rated power: 175 W / in opt. Efficiency, internal: 0.35 A / IM opt. Efficiency, IMAX: 0.4 A, protection class: IP 55, heat class B, pole-switchable: No, Mains cable: 7 / 1.5 mm 2, mounting position: horizontal / vertical, material: steel sheet, galvanized, weight: 9.1 kg, nominal width: 250 mm, Width: 304 mm, Height: 372 mm, Depth: 300 mm, A: 263 mm, B: 300 mm, Medium temperature at rated current: 60 °C, medium temperature at IMAX: 60 °C, total efficiency e: 46.9 %, measuring category: D, efficiency category: total, efficiency degree N: 58.2, VSD required: no, Year of manufacture: see type plate, manufacturer name / official registration number / manufacturer's place of establishment: Maico Elektroapparate-Fabrik GmbH / Freiburg Registrar's Court, HRB 601233 / Villingen-Schwenningen, PBEP / conveyor volume BEP / PFS, BEP: 1 kW / 1810 m3/h, nBEP: 2890 1/min, specific ratio: approx. 0.163, information on disassembly and disposal: see assembly instructions, information on installation, operation and maintenance: see assembly instructions, objects used for efficiency measurement, which are not described by the measurement category: -, pf, BEP: 152 Pa, sound power level LWA5: 82 dB(A), DC motor: false
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