Chamberlain WD912K User Manual download pdf (Page 18)

Figure 4 REMOVE COVER

INSTALLATION STEP 6

Install the Door Control

Locate door control within sight of the door at a

minimum height of 5 feet where small children cannot

reach, and away from moving parts of the door and

door hardware. The installation surface must be

smooth and flat. If installing into drywall (Figure 1),

drill 5/32" holes and use anchors provided. For

pre-wired installations (as in new home construction),

it may be mounted to a single gang box (Figure 2).

NOTE: After installation, a green or amber indicator

light behind the cover will indicate proper connection.

If not lit, the Lock and Light features will not function

(reverse wires to correct).

1. Strip 7/16" of insulation from one end of bell wire

and connect to the two screw terminals on back of

door control by color: white wire to WHT and

white/red wire to the RED (Figure 3).

2. Remove white cover by gently prying on a side

corner near the top of the cover with a small flat

head screwdriver (Figure 4). Fasten with

6ABx1-1/4" self-tapping screws (drywall

installation) or 6-32x1" machine screws (into gang

box) as follows:

• Drill and install bottom screw, allowing 1/8" to

protrude above wall surface.

• Position bottom of door control on screw head

and slide down to secure. Adjust screw for snug

fit.

• Install top screw with care to avoid

cracking plastic housing. Do not overtighten.

• Insert bottom tabs and snap on cover.

NOTE: The push bar may stick if the door control is

not mounted on a smooth surface. If a click is not

heard when pressing the push bar, loosen the two

mounting screws or relocate the door control to a

smoother surface.

3. (Standard installation only) Run bell wire up wall

and across ceiling to motor unit. Use insulated

staples to secure wire in several places. Do not

pierce wire with a staple, creating a short or open

circuit.

4. Strip 7/16" of insulation from end of bell wire.

Connect bell wire to the quick-connect terminals as

follows: white to white and white/red to red

(Figure 5).

NOTE: When connecting multiple door controls to the

opener, twist same color wires together. Insert wires

into quick-connect holes: white to white and red/white

to red.

5. Use tacks or staples to permanently attach

entrapment warning label to wall near door control,

and manual release/safety reverse test label in a

prominent location on inside of garage door.

NOTE: DO NOT connect the power and operate the

opener at this time. The trolley will travel to the full

open position but will not return to the close position

until the sensor beam is connected and properly

aligned. See Safety Reversing Sensor Instructions

beginning on page 21.

WHT

RED

Bell Wire

Terminal

Screws

Bottom Mounting Hole

Top Mounting Hole

Dry Wall Anchors

Insulated

Staples

Screw 6AB x 1-1/4"

(drywall installation)

Screw 6-32 x 1"

(gang box installation)

HARDWARE SHOWN ACTUAL SIZE

Figure 2

To Replace

Insert Bottom Tabs First

PRE-WIRED INSTALLATION

24 Volt

Bell Wire

To Replace

Insert Bottom Tabs First

Figure 1

STANDARD

INSTALLATION

Single

Gang Box

Figure 3 MULTI-FUNCTION

DOOR CONTROL (BACK)

Figure 5

To release wire, push in tab

with screwdriver tip

Door Control

Connections

7/16"

Strip wire 7/16"

Red

Grey

White

To prevent possible SERIOUS INJURY or DEATH from

electrocution:

•Besure power is not connected BEFORE installing door

control.

• Connect ONLY to 24 VOLT low voltage wires.

To prevent possible SERIOUS INJURY or DEATH from a

closing garage door:

•Install door control within sight of garage door, out of

reach of children at a minimum height of 5 feet, and away

from all moving parts of door.

• NEVER permit children to operate or play with door

control push buttons or remote control transmitters.

• Activate door ONLY when it can be seen clearly, is properly

adjusted, and there are no obstructions to door travel.

•ALWAYS keep garage door in sight until completely

closed. NEVER permit anyone to cross path of closing

garage door.

WARNING

CAUTION

WARNING

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Chamberlain WD912K User Manual Page 18

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