12
STARTUP cont.
Step 2.
Find Blade Pitch Angle:
( 20, 25, 27.5, 30, 32.5, 35, 37.5, 40, 45 or 50 )
• Carefully disassemble fan on flat surface and
note in which groove the pin is located. Refer to
groove number code diagram.
• Using diagrams in step 5, determine if the pin
was in the hub (HUB) or retainer side (RET) of
fan.
• Using table in step 4, find the possible blade
pitch.
• Using table in step 3, select your blade angle
based on whether your pin was in the HUB or
RET.
Step 3.
Determine Hub/Retainer Code: “HUB”
or “RET”
Step 4.
- Determine Groove Number: 1 or 2 or 3
or 4
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.
