Connect Electric Power - Chamberlain LiftMaster 1000A Instructions Manual

14
Attach Rail to Header Bracket
Position opener on garage floor below the header
bracket. Use packing material to protect the cover.
Raise rail until holes in the header sleeve and holes in
the header bracket align. Join with clevis pin (1).
Insert ring fastener (2) to secure.
NOTE: To enable the rail to clear sectional door
springs, it may be necessary to lift opener onto a
temporary support. The opener must either be
secured to a support or held firmly in place by another
person.
15
Position the Opener
NOTE: A 25mm (1") board (1) is convenient for setting
an ideal door-to-rail distance (unless headroom is not
sufficient).
Raise the opener onto a stepladder. Open garage
door. Place a 25mm (1") board (1) laid flat on the top
section of door near the centerline as shown. Rest the
rail on the board.
If the raised door hits the trolley, pull down on the
trolley release arm to disconnect the inner and outer
trolley sections. The trolley can remain disconnected
until connecting door arm to trolley is completed.
16
Hang the Opener
The opener must be securely fastened to a
structural support of the garage.
Three representative installations are shown. Yours
may be different. Hanging brackets (1) should be
angled (Figure A) to provide rigid support. On finished
ceilings, (Figure B) attach a sturdy metal bracket (not
supplied) (4) to a structural support before installing
the opener. For concrete ceiling mount, (Figure C),
use concrete anchors provided.
On each side of opener measure the distance from
the opener to the structural support (or ceiling).
Cut both pieces of the hanging bracket to required
lengths. Flatten one end of each bracket and bend or
twist to fit the fastening angles. Do not bend at the
bracket holes. Drill 4,5mm (3/16") pilot holes in the
structural supports (or ceiling). Attach brackets to
supports with wood screws (2).
Lift opener and fasten to hanging brackets with screw,
lock washer and nut (3). Check to make sure rail is
centered over the door. REMOVE 25mm (1") board.
Operate door manually. If door hits the rail, raise
header bracket. Use rail grease and lubricate bottom
surface of rail (5).
17
Attach Emergency Release Rope
& Handle
Thread one end of rope (1) through hole in top of red
handle so "NOTICE" reads right side up as shown (3).
Secure with an overhand knot (2). Knot should be at
least 25mm (1") from end of the rope to prevent
slipping.
Thread other end of rope through hole in release arm
of the outer trolley (4). Adjust rope length so that
handle is 1,8m (6 feet) above the floor. Secure with an
overhand knot.
NOTE: If it is necessary to cut rope, heat seal cut end
with a match or lighter to prevent fraying.
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Connect Electric Power

TO AVOID INSTALLATION DIFFICULTIES, DO NOT RUN THE GARAGE DOOR OPENER UNTIL
INSTRUCTED TO DO SO.
Connect the door opener only to an outlet controlled by a double pole switch.
18
Install the Light and Lens
Install a 40 watt maximum (230V, E27) light bulb (not
included) in the socket (1). Hinge the bottom of the
lens (2) onto the cover from left of the hinge bars (3)
as shown. Close the lens by gently squeezing the
upper corners and inserting the tabs (4) into slots on
the cover (5).
To change bulb, squeeze the upper corners of the lens
to disengage tabs. The lens will drop open, remaining
hinged at bottom.
The light will turn on and remain lit for 2-1/2 minutes
when power is connected. After 2-1/2 minutes it will
turn off.
19 Fasten Door Bracket
If you have a canopy garage door, a door arm
conversion kit is required. Follow the installation
instructions included with the replacement door arm.
Exercise care in removing and assembling arm
conversion kit. Keep fingers away from the sliding parts.
NOTE: Horizontal and vertical reinforcement is
needed for lightweight garage doors.
Sectional and One-Piece Door Installation
Procedure:
Door bracket (1) has left and right side fastening
holes. If your installation requires top and bottom
fastening holes use both the door bracket and door
bracket plate (2) as shown.
1. Center door bracket (with or without door bracket
plate, as required) at the top inside face of door as
shown. Mark holes.
2. A. Wooden doors
Drill 8mm holes (5/16") and fasten the door bracket
with nut, lock washer, and carriage bolt (3).
B. Sheet metal doors
Fasten with wood screws (4).
C. One-piece door optional
Fasten with wood screws (4).
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20 Assemble Door Arm
2
A. ONE-PIECE DOOR INSTALLATION:
Fasten the straight (1) and curved (2) door arm
3
sections together to the longest possible length (with
a 2 or 3 hole overlap) using carriage bolts (3), lock
washers (4) and hex nuts (5). With the door closed
connect the straight door arm section (1) to the door
bracket with clevis pin (6). Secure with ring fastener
(7). Disconnect the inner and outer trolley. Slide the
outer trolley back toward the opener and join the
curved arm (2) to the connector hole in the trolley (8)
with clevis pin (6). It may be necessary to lift the door
slightly to make the connection. Secure with ring
fastener (7).
NOTE: When setting the up limit, the door should not
have a "backward" slant when fully open. A slight
backward slant (9) will cause unnecessary bucking
and/or jerking operation as the door is being opened
or closed from the fully open position.
B. SECTIONAL DOOR INSTALLATION:
Connect according to Figure B, then proceed to
Step 21.
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