4
Figure 3
8—Repeat steps 3 through 7 for all blades.
9—Progressively tighten all blade clamp nuts
X14 until the blades
are barely able to move when twisting the blade.
10- Measure the final fan diameter. By using a different hole in the
blade retention sleeves the fan diameter can be altered for the ap-
propriate fit within the cylinder.
1
⁄
2
" minimum clearance between all
blade tips and the fan cylinder is recommended.
Fan Installation Instructions
1—Be sure motor is locked out.
2—Clean the hub bore and driving shaft extension for the full length
of the key.
3—Insert the key in the keyway. The top of the key must be below
the top of the shaft by not more than
1
⁄
8
"
(3 mm) . The key is a tight
fit across the width and must never be altered.
4—After cleaning, apply a coat of anti-seize compound to the en-
gagement portion of the shaft.
5—Raise the fan assembly above the shaft and slowly lower the
hub onto the shaft with the keyways aligned. Make certain the key
does not slide down during installation.
6—Install the Hub Retention Cap Screw with Lock Washer. Torque
hub retention cap screw to 40 ft·lb
ƒ
(54 N·m).
TIGHTEN BLADE
CLAMP BOLTS TO
100 FT·LB LUBRICATED
RETENTION
SLEEVE
TIGHTEN RETENTION
SLEEVE NUT TO
40 FT·LB