Table of contents:
Product description
Axial, high-temperature, medium-pressure fans designed for the high-temperature drying process in installations where high dust and larger elements of solids contained in the flowing air can damage the motor. The fan bodies, hot-dip galvanised, are fitted with a chamber that effectively isolates the motor from the air stream. They are ideally suited for use in modern grain dryers where emphasis is placed on high drying parameters with a recuperation process. Designed for continuous operation at high temperatures, i.e. up to + 105°C.
- Standard diameter range: Ø800 – Ø1000mm
- Capacity range: 20000 – 50400m3/h
- Operating temperatures: -20 to +55°C
- Installed motor powers: 5.5 – 22.0 kW
- Motor speeds: 1500 min-1
- Motors fitted with maintenance-free bearings
- Motors adapted as standard for speed control by a frequency converter
- Steel housings
- Corrosion-protected housing – hot-dip galvanised
Optional executions
- High-temperature temp. max: 135°C (WOHT)
- Enclosure made of stainless steel
- Flow parameters other than standard
Construction
Housing
Motor
Rotor
Housing:
- Perfectly round, machined from structural steel sheet. Equipped on both sides with flanges rolled from the casing shell with connection openings
- Equipped with a separate motor compartment
- Equipped with a rear guide
- Protected against corrosion by hot-dip galvanising
Housing optional:
- Corrosion protection by powder coating
- Housing made of stainless steel, grade 1.4301
- Inspection hatch
- Painted in another RAL colour
Motor:
- Asynchronous 3 phase
- Supply voltage: 3~ 230/400V; 400/690V
- Efficiency class : IE3
- Insulation class: F
- Degree of protection: IP 55
- Cast aluminium or cast iron motor body
Motor optional execution:
- Supply voltage: 440V, 460V
- Supply frequency: 60Hz
- Efficiency class: IE 4
- Motor insulation class: H
- Degree of protection: IP 56, IP66,
- Winding temperature sensors
Impeller:
- Blades and hub made of die-cast aluminium
- High-performance blades with special sickle shape for lower noise levels
- Lower energy consumption while maintaining high pressures
- Dynamically balanced to class G-6.3 according to ISO 1940-1
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