Butterfly Assembly
1. Install the spring clips (B) as shown onto the butterfly frame.
2. Install the shafts (D), washers (E), and mounting blocks (F) in the butterfly flaps (C) as shown.
3. Install the mounting blocks (F) on the butterfly flaps (C) to the butterfly frame (A) top and bottom with
the bolts (G) and nuts (H).
4. Install the spring (I) to the flaps (C) with the bolts (G) and nuts (H).
Figure 3-15
54 in. Butterfly frame assembly
A
Butterfly frame (12-0646-BS)
F
Nylon mounting blocks (12-0464)
B
Spring clips (12-0457)
G
Bolts (S-853)
C
Butterfly flaps (12-0482)
H
Nuts (S-7025)
D
Shafts (12-0583)
I
Spring (16-0100)
E
Nylon washers (12-0319)
J
Diverter (0401-10861-TV)
5. The V-shaped center bar of the butterfly frame weldment should be positioned vertically, with the
bottom lining up with the slots farthest out on the cone (L) and the top lined up with the slots farthest
in on the cone (K). This will give the butterfly frame weldment a slight tilt back (~ 1 in.). This aids the
closing of the butterfly flaps.
6. Use 1/4 x 1-1/4 in. bolts and nuts to fasten the butterfly frame weldment to the panels. Tighten the
1/4 in. nuts.
28
PNEG-1502
54" Galvanized Mega Flow Butterfly Fan
