2018.02
5 / 10
The vertical and horizontal installation of the NRDO accessory that could be used with the fan on the Drawing
5.1 is illustrated in the following drawing.
Drawing 5.4
Drawing 5.3
The vertical and horizontal installation of the NRDO accessory;
Drawing 5.3 demonstrates horizontal installation of the NRDO accessory to the axial fan. When there is no air
flow; position of the wing must be as shown in the Drawing 5.3 in order to keep the wings closed.
Drawing 5.4 demonstrates vertical installation of the NRDO accessory to the axial fan. When the connection is
made properly and there is no air flow, the wings close down.
Drawing 5.5
