Craftsman 139.53939D Owner's Manual page 21

INSTALLING THE BRACKETS
Be sure power to the opener is disconnected. Install
and align the brackets so the sensors will face each
other across the garage door, with the beam no higher
than 6" (15 cm) above the floor They may be installed in
one of three ways, as follows
Garage door track installation (preferred):
o Slip the curved arms over the rounded edge of each
door track, with the curved arms facing the door. Snap
into place against the side of the track.. It should lie
flush, with the lip hugging the back edge of the track
(Figure 1).
If yoHTdoor track will not suppor_ the bracket securely,
wall installationis recommended.
Wall installation (Figures 2 and 3):
• Place the bracket against the wall with curved arms
facing the door. Be sure there is enough clearance for
the sensor beam to be unobstructed.
• If additional depth is needed, an extension bracket
(see Accessories) or wood blocks can be used.
• Use bracket mounting holes as a template to locate
and drill (2) 3/16" diameter pilot holes on the wall at
each side of the door, no higher than 6" (15 cm) above
the floor.
• Attach brackets to wall with lag screws (not provided)_
, If using extension brackets or wood blocks, adjust right
and left assemblies to the same distance out from the
mounting surface. Make sure all door hardware
obstructions are cleared_
Floor installation (Figure 4):
o Use wood blocks or extension brackets (see
Accessories) to elevate sensor brackets so the lenses
will be no higher than 6" (15 cm) above the floor..
° Carefully measure and place right and left assemblies
at the same distance out from the wall. Be sure all
door hardware obstructions are cleared.
. Fasten to the floor with concrete anchors as shown.
Figure I
DOOR TRACK M OUNT (RIGHT SIDE)
Door
-- Track
_ensor
Bracket
Figure 2
Figure 3
Indicalor
Ught
WALL MOUNT (RIGHT SIDE)
insld°_
_n_ Fasten Wood Biock to Wall with
_L//Lag Screws (Not Provkled)
Ught Sensor
;' _. Bracket
WALL MOUNT (RIGHT SIDE)
lr_Sid°e"
W,_I Bracket
_6_g Exlens_on
(See Accessories)
t I.,,_ (Provided with
Sensor
(Provided with Bracke
Lens Ught
Figure 4 FLOOR M OUNTtRIGHTBIDE)
HARDWARE SHOWN ACTUAL SIZE
Carriage Bolt Wing Nut Staples
1/4"-20xl/2" 1/4"-20
_--A_ach with
, Concrete Anchors
I i (Not Provided)
Ught
Bracket
21