Chamberlain 760CB Installation Instructions

KEY SWITCH INSTALLATION INSTRUCTIONS
FOR SECTIONAL DOORS
WARNING
(FOR ONE-PIECE DOORS Refer to Page 2)
Step 1: Disconnect power to operator. (Illustration 1)
Position key Switch in the upper half of garage door jamb.
CAUTION
Mark the location on horizontal center of jamb or to a
depth of 2" (5 cm) (see Step 2).
(1)
Step 2: (Illustration 2). If your garage has a built-up jamb,
drill the hole to a depth of 2" (5 cm). Then on the inside
jamb, drill a second hole into the first hole to complete
access.
(2)
2" (5 cm) Min.
Step 3: (Illustration 3). Thread the bell wire through
completed hole from inside the garage. Fasten wire to
the Key Switch terminal screws before attaching
mounting plate to jamb. In most cases, 4 screw nails will
hold the plate firmly in place. Drive a nail into jamb and
Garage
Exterior wind some wire around it before running wire to the
opener terminals.
NOTE: Instructions for attaching bell wire to opener
terminals are on Page 2.
Door Jamb
CAUTION: Bell wire should be pulled taut to prevent
access to wiring from outside the garage.
Door
Track
Step 4: If screw nails won't hold the plate firmly in place,
use anchor and nut supplied with hardware. (See
illustration on page 2). If anchor and nut are used,
remove the Key Switch terminal screws.
Insert key Switch in drilled hole. Install anchor and nut.
Door
Return screws to switch terminals. Fasten bell wire to
Jamb
terminals. Drive a nail into jamb and wind some wire
around it before connecting to terminals on back of
opener.
1" (2.5 cm)
NOTE: Instructions for attaching the bell wire to opener
Diameter
are on page 2 (illustration 5).
Hole
1
WARNING
To prevent possible SERIOUS INJURY or DEATH from electrocution,
disconnect power to opener BEFORE proceeding.
WARNING
(3)
Nail
Bell Wire
Mounting
Plate
Terminal
Screw