Chamberlain 4410E Manuel D'instructions page 19

BEFORE YOU BEGIN:
1. Look at the wall or ceiling above the garage door. The header
bracket must be securely fastened to structural supports.
2. Do you have a finished ceiling in your garage? If so, a support
bracket and additional fastening hardware (not supplied) may be
required.
3. Depending on your door's construction, you might need a special
door arm. See your dealer.
4. Do you have an access door in addition to the garage door? If not,
Model 1702E Outside Quick Release Accessory is required.
COMPLETED INSTALLATION –
As you proceed with the assembly, installation and adjustment
proceedures in this manual, you may find it helpful to refer back
to this illustration of a completed installation.
(1) Chain Pulley Bracket
(2) Trolley
(3) Chain
(4) T-rail
(5) Hanging Bracket
(6) Power Cord
(7) Opener
ASSEMBLY SECTION
Important: If you have a canopy or dual-track door, you need to
use the instructions packed with The Chamberlain Arm™
Accessory in conjunction with this Owner's Manual when
assembling the T-rail.
ASSEMBLE THE T-RAIL –
Your opener has either a 3-piece or 4-piece rail assembly. Refer
to that illustration as you proceed with the following instructions.
On a 3-piece rail (A), the end sections (4) are identical. Make sure the
"arrow label" on the center section (5) is pointing toward the door.
On a 4-piece rail (B), the center sections with tapered ends (5) are
interchangeable for ease of assembly. So are the end sections (4).
Place rail pieces on a flat surface for assembly. Connect the braces
(3) and lock nuts (2) from one side of the rails and insert the carriage
bolts (6) from the opposite side. Then the trolley will not hit the lock
nuts when it is installed.
The square necks on the carriage bolts must be seated in square
holes in rail sections (1).
For canopy and dual-track doors, continue with the instructions
in this manual until Step 12.
INSTALL THE CHAIN PULLEY BRACKET –
Position chain pulley bracket (2) on the front section of T-rail (6).
Fasten securely with: screws (1); lock washers (3) and nuts (4).
When tightening the screws, be sure to keep bracket parallel to
rail (5). Otherwise, rail may bow when opener is operated.
114A2074H-GB
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(8) Light Lens
(9) Manual Release
Rope & Handle
(10) Curved Door Arm
(11) Straight Door Arm
(12) Door Bracket & Plate
(13) Header Bracket
(14) Trolley Release Arm
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INSTALL THE TROLLEY –
Insert a screwdriver into trolley "stop" hole in the front end of T-rail (1).
Slide trolley (2) along rail to the "stop".
Note: If the trolley hits against the nuts on T-rail, review rail
assembly and reposition hardware.
FASTEN T-RAIL & ATTACH CHAIN SPREADER –
Place packing material under the opener to protect the opener cover.
For convenience, place a support under the chain pulley bracket end
of rail.
Remove the (2) washered screws (4) from the top of the opener. Align
holes in back end of the T-rail with holes in opener (7).
Fasten the rail to the opener with the same washered screws and
tighten securely. Caution: Use only those screws! Use of any other
screws will cause serious damage to the door opener.
Attach the chain spreader (2) with hex screws (1) and flat washers (3).
Insert a hex screw (5) into trolley stop hole in T-rail (6). Tighten
securely with a lock washer (8) and nut (9).
INSTALL THE CHAIN –
Do not remove chain from carton.
Dispense a few inches of chain from carton and fasten to trolley with
a master link.
Master Link Procedure: Push pins of master link bar (5) through
chain link (6) and hole in front end of trolley (7). Push cap (2) over
pins (8) and onto notches. Slide clip-on spring (1) over cap and onto
pin notches until both pins are securely locked in place.
Caution: Keep chain taut during installation to help prevent
kinking.
With the trolley against screwdriver, dispense chain around pulley (4).
Proceed back around a groove in chain spreader (9).
(Chain installation for either the 6-tooth sprocket (11) or the
8-tooth sprocket (12) is based on door type.) All one-piece doors
should use the 6-tooth sprocket. The opener sprocket teeth (10)
must engage the chain.
Use the second master link to connect the chain to the flat end of the
threaded shaft (3).
Check to make sure the chain is not twisted.
SET THE CHAIN TENSION –
Insert the threaded shaft (2) through the hole in the trolley (1).
By hand, thread the spring trolley nut (3) on the threaded shaft until
finger tight against trolley.
Insert a screwdriver tip (4) into one of the slots of the nut ring (7), and
hold firmly.
Using an open end wrench (5) at the square end (6), slightly rotate the
assembly clockwise until the nut ring (7) is released against the trolley,
providing tension for the best operation of the opener.
Remove "temporary stop" screwdriver.
ASSEMBLY OF YOUR OPENER IS NOW COMPLETE.
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