Chamberlain LA400 Installation and operating instructions

Typical 4" Post Hole
Acceptable Configurations (will vary based on site conditions)
Typical 6" Post Hole
Can also be used to mount operator if needed
NOTE: The addition of this hole helps
add up to 30-degrees of movement in
some applications.
Gate Post
Opener Hinge Point
Gate Hinge Point Gate Hinge Point Gate Hinge Point
Gate Hinge PointGate Hinge PointGate Hinge Point
7"
7"
Opener Hinge Point Opener Hinge Point
Gate Post Gate Post
Gate Post Gate Post Gate Post
7"
7"
Opener
Hinge Point
7"
7"
Opener
Hinge Point
7"
7"
Opener
Hinge Point
7"
7"
7"
7"
Addendum to LA400
Owner’s Manual
LA400 BRACKET CONFIGURATIONS
Assemble bracket.
NOTE: This new bracket is being added to the LA400, offering
greater mounting flexibility.
DETERMINE MOUNTING LOCATION
The gate post bracket assembly can be mounted several places
on the gate post.
Ideally, the distance between and opener hinge points should be
approximately 7" x 7". Place opener against gate post and adjust
the opener until the required dimension is achieved (Figure 1).
Figure 1

Pin
Gate
Bracket
C-Clamp
C-Clamp
Actuator Side
Hairpin Clip
Operator must be level
ATTACH THE OPERATOR
Secure brackets to post and gate with c-clamps. Attach operator
arm to brackets with pins and clips provided (Figure 2).
Disengage the operator by inserting the key and rotating the
handle (Figure 3).
Move the gate manually to the fully open and fully closed
positions. It is extremely important that the gate bracket does
not bind with the post bracket (Figure 4).
©2006, The Chamberlain Group, Inc.
01-33464 All Rights Reserved
Figure 2
Figure 3 Figure 4