Craftsman 1/2HP Garage Door Opener 139.53515SR - Manual (Page 12)

Installation
STEP 4
Hang Opener Chassis
THE OPENER CHASSIS MUST BE SECURELY FASTENED TO A STRUCTURAL SUPPORT OF GARAGE.
Three representative installations are shown, \burs may be different. Hanging brackets should be angled (Fig.1)
or cros^d (Rg.2) to provide rigid support. On finished ceilings (Fig.3), attach a sturdy metal bracket (not supplied) to
ceiling joists before installing opener. v kk /
PROCEDURE: On EACH side of the opener measure the
distartce from chassis to the structural supports.
Cut both pieces of the hanging bracket to required lengths.
Ratten one end of each bracket and bend or twist to fit
the fastening angles. Do not bend at the bracket holes.
Drill 3/16* pilot holes in the structural supports. Attach the
flattened ends of brackets to supports with 5/16*x1-7/8*
lag screws.
Lift opener and fasten to hanging bracket as shown. Check
to make sure Tee rail is centered over door. REMOVE
2x4. Operate door manually. If door hits the rail, raise
header bracket.
GREASE THE TOP AND THE UNDERSIDE OF RAIL
SURFACE ON WHICH TROLLEY SLIDES. A TUBE OF
GREASE IS SUPPLIED.
FIGURE 1
FIGURE 2
&16*-ie*7/8" Screw
S/ie* Lock Washer
5/ie'-18NuI
Bracket
(Not Supplied)
FIGURE 3
FINISHED
CEILING
Lag Screws
S/l6'*1-7/e'
(Not Supplied)
Я 6'-18x7/8" Screw
S/16" Lock Washer
S/16"-l8Nul
STEP 5
Attach Emergency Release Rope & Handle
A
USE EMERGENCY RELEASE ROPE ONLY TO
DISENGAGE TROLLEY. DO NOT USE ROPE
AND HANDLE TO PULL THE DOOR OPEN OR
CLOSED.
PROCEDURE: Thread one end of rope through hole in top
of red handle so ‘NOTICE’ reads right side up as shown.
Secure with an overhand knot.
NOTE: Knot should be at least 1* from end of the rope
to prevent slipping.
Thread other end of rope through hole in release arm of
trolley. Adjust rope length so that handle is 6 feet above
the floor. Secure with an overhand knot.
NOTE: If it is necessary to cut rope, heat seal the cut
end with a match or lighter to prevent fraying and/or
raveling.
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