Owner's Manual

2) After the track is assembled, position track assembly onto
the operator power head and attach with four 3/8”-16 x 1” bolts,
lock washers and nuts (supplied in a separate hardware package
#100470).
NOTE: To keep #41 chain (used on
3/4 H.P. operators) centered on the
threaded stud, place a .065" thick flat washer
(provided) on each side of the flat, as indicated by the
arrows in Figure 4, when installing the connecting
link. 1/3 and 1/2 horsepower operators use the narrower #65
chain and the use of the spacers is not required.
Install chain around drive sprocket at operator head then around
idler at front end of rail and thread through opening at front end
of carrier. If the rail is equipped with a chain guide-spacer near
its center (12 foot rail or longer only) pass the chain over it in one
direction and under it in the other direction to separate the two
lengths of chain. Apply initial tension by pushing forward on the
carrier while pulling chain tight through opening in the carrier in
the direction of D. When maximum tension has been applied by
this means, swing chain forward and insert retaining plate, E, in
place. Insert 1/4-20 x 5/8 hex head machine screw through
retaining plate, E, and tighten plate in place. Make final
adjustment of chain tension to remove excess sag by adjusting
nuts on threaded rod at chain lug, C.
RAIL/CHAIN ASSEMBLY
Refer to Figure 1 parts illustrations. The part names and item numbers are
referenced identically to the part names and numbers in the assembly
procedures that follow. Before starting assembly of the operator
track check for the proper length. The tracks supplied may
be longer than required for the door height. The tracks
should be three (3) feet longer than the door
height. If the tracks supplied with the operator
are longer than the door height plus three (3) feet
it will be necessary to trim the rails in two foot
increments from the power head mounting end
as shown in Figure 2.
CAUTION
: WHEN NECESSARY
TO CUT THE TRACK
ENSURE THE ENDS
ARE LINED UP
AS IN FIGURE 2.
1) Assemble the
operator track by
assembling the items as
shown in Figure 2.
3) Referring to Figure 1 , 2 and 3 (below) , slide the trolley
onto the track with the chain take up bolt lug (C) toward the
power head. Thread one 3/8-16 keps nut (attached star washer)
onto the Chain take up bolt with the keps part (attached star
washer) away from the chain attachment end. Insert the chain
take up bolt threaded end through the lug hole on the trolley (C)
just far enough to start a second 3/8-16 keps nut. Attach one end
of the chain to the opposite end of the threaded stud using a 3-
piece chain link (provided). See Figure 3.
Figure 2
107068
Figure 4
RAIL/CHAIN ASSEMBLY INSTRUCTIONS
Figure 3
100461
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