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Step 5. Final Assembly
Definition of HUB and RET for purposes of
instructions. For 2-piece hubset:
Using the HUB or RET code found in Step 3:
If code is HUB, place the hub down on work
surface first (one or two pieces, depending on
above).
If code is RET, place one retainer ring only
down on the work surface first. (A weighted
coffee can could be used to elevate the fan from
the work surface).
Using the groove number, place the locking pin
in the groove number that was found in Step 4.
Insert Blades:
Place the blade over the pin in the hub/retainer
blade socket, so that the pin also fits into the
appropriate pitch angle groove in the blade.
Repeat for all blades.
Assemble hub set together, aligning the match
marks that were made.
Replace any balancing weight to its original
position.
To finish, tighten the bolts in a cross pattern to 5
to 6 ft-lbs of torque.
Multi-Wing W Series Black Glass Reinforced
Polypropylene Fan Blade Pitch Angle Setting
Instructions:
Step 1. Note original position of retaining plates,
center boss and all hardware including additional
hardware used for balancing.
Step 2. Remove all the bolts and nuts.
Step 3. Determine blade rotation – on the concave
side of the blade is a blade marking showing
6WR, 6WL, 7WL, 7WR, or 9WR. The “L” and
“R” denote the rotation of the blade.
Step 4. Replace the pitch insert in the blade root
with an insert of the desired pitch.
Step 5. Replace blades to their original location.
Step 6. Replace all nuts, bolts, and washers on the
fan hub.
Step 7. Replace retaining plates and center boss to
original location.
Step 8. Tighten nuts and bolts to 14 ft-lbs of
torque.
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