Craftsman 139.536481DM Owner's Manual page 21

1/2 hp 315 mhz garage door opener for residential use only
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Insta//ing the Brackets
Figure 1,2 and 3 show recommendedassembly of bracket(s) and
"C" wrap basedon the wallinstallation of the sensors on each side
of the garage door as shown on page 20, or on the garage door
tracks themselves.
Figure 4 and 5 are variations which may fit your installation
requirements better. Make sure the wraps and bracketsare
aligned so the sensorswill face each other acrossthe garage
door.
Garage Wall or Door TrackInstallation
1. Fastenthe "C" wraps to the mounting brackets having square
holes, using the hardware shown in Figure 1.
Garage Wall Installation
2. Connecteach assembly to a slotted bracket, using the hardware
show on Figure 2. Note alignment of bracketsfor left and right
sides of door.
3. Fingertighten the lock nuts.
4. Use bracket mounting holes as a template to locate and drill (2)
3/16" diameter pilot holes on both sides of the garage door,
4"-6"above the floor but not exceeding6" (seewarning on
page 20).
5. Attach bracket assembly with 1/4"x1-1/2" lag screws as shown
in Figure2.
6. Adjust right and left bracket assemblies to the same distance
out from mounting surface. Make sure all door hardware
obstructions are cleared. Tighten the nuts securely.
Garage DoorTrack Installation
Discard slotted bracket. Drill 3/8" holes in eachtrack and fasten
securely with hardware as shown in Figure 3.
Figure4 AlternateWall Mount
Mounting Bracket
with Slot
Bracket
with Square Holes
Wrap
Sensor
with wire
Indicator Light
Garage -
Floor
Figure1 GarageWALLor DOOR Track Installation
Mounting Bracket
_\
With Square Holes
"C"Wrap
_lo_i3N2uts _
:'__#10-32x3/8''
Figure2 GarageWALLInstallation
1/4x1-1/2"
1/4-20xl/2" Carriage Bolts
Lag _rews
(with square shoulder)
/
i:l - -
1/4"-20
Lock Nuts
Figure3
Garage
Door Track
Drill 3/8" ---.._
Holes
S
1/4- 20x1/2"
Carriage Bolts /
"C" Wrap
Mounting Bracket
with Square Holes
GarageDOOR Track Installation
inside
1/4,,-20 Lock Nuts
I
Garage
I
S
Mounting Bracket
/
L
_
"C" Shaped
Figure5 AlternateFloorMount
Sensorwithwire
IndicatorLight
MountingBracket
with Square Holes
MountingBracket
with Slot
Attach with
concrete
Floor
Screw
#10-32x3/8"
©
Lock Nut
#10x32
HARDWARESHOWN ACTUALSIZE
Staples
Carriage Bolts
1/4"-20xl/2"
Q
Lock Nut
1/4"-20
21

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