DOS
Table of contents:
Product description
Roof ventilators – axial. Characterised by very high efficiencies in the low pressure range. Designed for industrial use. Resistant to atmospheric conditions. Optionally, they can be made in a supply version.
- Standard diameter range: 280 – 1250mm
- Operating temperatures: -20 to +55°C
- Installed motor powers: 0.18 – 5.5kW
- Motor speeds: 1500, 1000 min-1
- Motors fitted with closed bearings, maintenance-free
- Motors adapted as standard for speed control by a frequency converter
- Steel housings and canopies
- Corrosion-protected housings – powder coating
Optional executions:
- shielding mesh on inlet
- explosion-proof
- high temperature max: 105°C
Construction
Housing
Motor
Rotor
Housing:
- Made of structural steel sheet. Fitted with a rolled flange from the casing shell with connection holes and rain canopy
- Equipped with bolted or welded motor shelf
- Protected against corrosion by powder coating. Painted in colour: RAL 9005 (black)
Housing optional:
- Corrosion protection by hot-dip galvanising
- Housing made of stainless steel, grade 1.4301
- Aluminium enclosure
- Painted in another RAL colour
Motor:
- Asynchronous 1 or 3 phase
- Supply voltage: 3~ 230/400V; 400/690V
- Insulation class: F
- Degree of protection: IP 55
- Cast aluminium or cast iron motor body
Motor optional execution:
- Supply voltage: 440V, 460V, 500V, 1000V
- Supply frequency: 60Hz
- Efficiency class: IE4
- Motor insulation class: H
- Degree of protection: IP 56, IP66
- Winding temperature sensors
- Bearing temperature sensors
Rotor:
- Blades made of glass fibre reinforced polypropylene, hub made of die-cast aluminium
- Dynamically balanced to G-6.3 in accordance with ISO 1940-1
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