Chamberlain SECURITY+ 3265M-267 1/2 HP - Manual (Page 10)

10
INSTALLATION STEP 4
Position the Opener
Follow instructions which apply to your door type as
illustrated.
SECTIONAL DOOR OR ONE-PIECE DOOR
WITH TRACK
A 2x4 laid fl at is convenient for setting an ideal
door-to-rail distance.
• Remove foam packaging.
• Raise the opener onto a stepladder. You will need help
at this point if the ladder is not tall enough.
• Open the door all the way and place a 2x4 laid fl at on
the top section beneath the rail.
• 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.
To prevent damage to garage door, rest garage door
opener rail on 2x4 placed on top section of door.
ENGAGED RELEASED
Trolley
Release Arm
Rail
Door
2x4 is used to determine
the correct mounting
height from ceiling.
ONE-PIECE DOOR WITHOUT TRACK
A 2x4 on its side is convenient for setting an ideal
door-to-rail distance.
• Remove foam packaging.
• Raise the opener onto a stepladder. You will need help
at this point if the ladder is not tall enough.
• Open the door all the way and place a 2x4 on its side on
the top section of the door beneath the rail.
• The top of the door should be level with the top of the
motor unit. Do not position the opener more than
4" (10 cm) above this point.
Header Bracket
2x4 is used to determine
the correct mounting
height from ceiling.
Top of Door
INSTALLATION STEP 3
Attach the Rail to the Header Bracket
• Position the opener on the garage 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 opener securely on a
temporary support to allow the rail to clear the spring.
• Position the rail bracket against the header bracket.
• Align the bracket holes and join with a clevis pin
as shown.
• Insert a ring fastener to secure.
Rail
Rail
Chain Pulley
Bracket
Chain Pulley Bracket
Header Bracket
Header
Bracket
Clevis Pin
5/16"x2-3/4"
Header Wall
Temporary Support
Ring
Fastener
Garage Door
Ring Fastener
Clevis Pin 5/16"x2-3/4"
HARDWARE SHOWN ACTUAL SIZE