DA 18 - 18 NT - V600013
DA fans have forward curved centrifugal
impellers, tablocked on both sides to
two steel rings and to a double disk at
the centre.
The blade is designed to minimize the
loss caused by air turbulence and to
obtain maximum efficiency with
minimum sound level.
All impellers are dynamically balanced.
The housings, in galvanized steel, are
formed by two side plates spot-welded
to a central scroll. A cut-off mounted on
to the discharge prevents turbulence.
The side plates have an aerodynamic
profile and include some drill holes to
allow fixing of the base supports as well
as the motor support. Four positions
can be selected for the base support
and eight for the motor support.
The ball bearings are mounted on
rubber inserts to reduce vubration
except for the framed versions which
are filled with cast ball bearing
housings.
Operating temperature -30°C to + 85°C.
The R series fans are based on
standard N fans equipped with rectangular
side structures built with L
profiles which reinforce the unit, forming
a rigid cube structure. This frame is
welded to the sides of the fan. A
number of groove-shaped drills on the
strengthening frame corners allow for
a proper fixation.
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