Aluminum thermomoisture resistant reversive fans (Germany). Degree of protection of engines of IP 55 fans (State standard specifications 14254 - 96), the thermoprotected execution on a class of isolation "F" (State standard specification 8865 - 93). In case of application of the high - temperature modes, execution on a class of isolation "H" is possible. Fans are formed in group on a ventilatory aluminum wall and are placed over a drop ceiling. Shovels of fans – cast aluminum, are dynamically balanced, feedwells are executed from aluminum alloys. In use fans do not demand any service (greasing of bearings, etc. ). Heaters bimetallic the KNSK type with fins from aluminum. The heat - transmitting surface made of aluminum and dense contact of two materials provide high heattechnical characteristics of heaters. Replacement of bimetallic heaters by corrosion - proof is optionally possible.
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