Attach The Rail To The Header Bracket; Position The Operator - LiftMaster ATS2113X 1/2 HP Manuel D'installation

INSTALLATION STEP 3

Attach the Rail to the Header Bracket

1. Position the operator on the fl oor below the header
bracket. Use packing material as a protective base.
NOTE: If the door spring is in the way you'll need help.
Have someone hold the operator securely on a temporary
support to allow the rail to clear the spring.
2. Position the chain pulley bracket against the header
bracket.
3. Align the bracket holes and join with a 5/16"x2-3/4" clevis
pin as shown.
4. Insert a ring fastener to secure.
INSTALLATION STEP 4

Position the Operator

SECTIONAL DOOR ONLY
A 2x4 laid fl at is convenient for setting an ideal
door-to-rail distance.
1. Raise the operator onto a stepladder. You will need help at
this point if the ladder is not tall enough.
2. Open the door all the way and place a 2x4 laid fl at on the
top section beneath the rail.
3. If the top section or panel hits the trolley when you raise
the door, pull down on the trolley release arm to disconnect
inner and outer sections. Slide the outer trolley toward
the motor unit. The trolley can remain disconnected until
Installation Step 12 is completed.
ENGAGED
HARDWARE SHOWN
ACTUAL SIZE
Ring Fastener
Clevis Pin
5/16"x2-3/4"
Trolley
Release Arm RELEASED
Header
Wall
Header
Bracket
Chain
Pulley
Bracket
Rail
Door
To prevent damage to door, rest door operator rail on
2x4 placed on top section of door.
Door
10
Ring Fastener
Header Bracket
Clevis Pin
5/16"x2-3/4"
Chain
Pulley
Bracket
Rail
Rail
2x4 is used to
determine the
correct mounting
height from ceiling.
Temporary
Support