Allstar Products Group CHALLENGER AC9300 - Manual (Page 9)

9
C: INSTALLING THE OPERATOR
STEP 4: Mount Power Head to Ceiling: Since there is such variety in ceiling structures, all the mounting possibilities for the Power
Unit cannot be illustrated here. The main concern is mounting the Power Unit securely to the ceiling joists for operational strength,
rigidity and safety. Although there are a series of mounting slots provided on the power unit, try to secure the mounting straps in
the slots closest to the front. Mounting
may usually be accomplished using
standard 1-1/4“ perforated steel angle
available at most hardware stores. If in
doubt about location of, and attachment to,
ceiling joists, a carpenter should be
contacted to provide assistance. A cross
brace will be necessary if power head is
mounted 8” or more from the ceiling.
STEP 5: Return to the Rail/Wall
Mounting Bracket and securely tighten
the bolt and nut that connect the Rail Front
Idler bracket and the Wall Mounting
Bracket. Take care not to over tighten the
nut; tighten only until the end of the bolt is
(See Step 2).
ALLOW 2” BETWEEN
TOP OF DOOR AND RAIL
DOOR FULLY
OPEN
TOP OF
DOOR IN
HIGH ARC
POSITION
ALLOW 2” BETWEEN
HIGH ARC
SECTIONAL DOORS AND ONE-
PIECE DOORS WITH TRACKS
ONE PIECE DOORS
WITHOUT TRACKS
104373
Mounting The Power Head End of
Opener
STEP 6: Align the center of opener tracks
with the center line previously marked on the
top section of the garage door to ensure rail
will be parallel with the direction of door
travel.
Use supplied hangers from the ceiling beams
to hang the opener at the power head end (be
sure to locate and mount to the solid structural
beams, as illustrated). Predrill with 3/16” drill
bit and use supplied 1/4” x 1-1/2” lag screws
to ensure a rigid mount.
NOTE: Hanging brackets should be at an
angle to provide rigid support. If hangers have no angle or if you use longer hangers, cross brace the
hangers to eliminate the possibility of sway during operation of the opener.
110050-2
For finished ceilings, or if
structural beams are out of
position for mounting use a
third mounting angle (not
included) making sure it is
securely mounted to beams.
Cut and bend
Hangers to fit
Opener
Power Head
Structural
Beams
Reinforce Door
Vertically and
Horizontally
110051-2
Top Roller
Guideline
Door Center Line
Mounting
Bracket
Top Roller
Guideline
STEP 7: Door Bracket Installation
NOTE: If the door is of light construction it may be necessary to reinforce the
center stile with steel angle or wood to prevent damage to the door if it
encounters an obstruction on closing.
Mount the door bracket using two 1/4”-20 x 2” carriage bolts and 1/4” nuts
(supplied), on center line of door with the middle hole in line with the top
rollers.
Fiberglass, aluminum or lightweight steel garage
doors will require reinforcement before installation of
the door mounting bracket Contact your door
manufacturer for a reinforcement kit or instructions.
WARNING
If your door comes equipped with a strut
mounted opener bracket, proceed to Step 8.
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