© 2020 DELTA T LLC Ι ALL RIGHTS RESERVED. 9
11. Install airfoils
Slide airfoils into slots on sides of motor unit. Install each airfoil on opposite side of fan
from previous airfoil to prevent fan from tilting (Fig. 11.1). Make sure numbered sticker on
each airfoil matches corresponding slot number on bottom of fan. Ensure all airfoils
are fully seated in slots before tightening screws on bottom of fan.
Fig. 11.1
Tighten the six airfoil screws on bottom of fan according to numbered sequence
(Fig. 11.2). When fi nished, repeat tightening sequence. Verify all six screws are fully
tightened by making sure the tabs next to holes 1 and 5 are fl ush with the openings.
Fig. 11.2
Airfoil
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