Craftsman 139.53910 - Manual (Page 21)

Be sure power to the opener is disconnected.
Install and align the brackets so the sensors wif! 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.
G arage door track installation (preferred):
• 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, as shown in Figure 1.
If your door track will not support the bracket
securely, wall installation is recommended.
W all installation (Figure 2 & 3):
• Place the bracket against the wail 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 ail door
hardware obstructions are cleared.
Floor installation (Figure 4):
• 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.
INSTALLING THE BRACKETS
Figure 1
door track mount ( r [ ght side )
Figure 2
WALL MOUNT (RIGHT SIDE)
Faslen Wood Block to Wall with
''Lag Screws (Not Provided)
Indicator
Light Sensor
Bracket
Figure 4 FLOOR MOUNT (RIGHT SIDE)
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