Chamberlain LiftMaster Security + 3270 1/2 HP Manuel D'instructions page 5

Carton Inventory
Your garage door opener is packaged in two cartons
which contain the motor unit and all parts illustrated
below. Accessories will depend on the model purchased.
Multi-Function Door
Control Panel (1)
Belt
Pulley Bracket
Safety Reversing Sensor
Bracket (2)
INSTALLATION HARDWARE
Hex Bolt 5/16"-18x7/8" (4)
Lag Screw 5/16"-9x1-5/8" (2)
Clevis Pin 5/16"x2-3/4" (1)
Clevis Pin 5/16"x1-1/4" (1)
Clevis Pin 5/16"x1" (1)
Nut 5/16"-18 (4)
Lock Washer 5/16" (4)
Screw 6ABx1" (2)
Screw 6-32x1" (2)
SECURITY✚ ®
Single-Button Remote Control (1)
Motor Unit with Light Lens
Trolley
If anything is missing, carefully check the packing
material. Hardware for installation is also listed below.
One-Piece
Rail
2-Conductor Bell Wire
White & White/Red
®
The Protector System
(2) Safety Reversing Sensors
(1 Sending Eye and 1 Receiving Eye)
with 2-Conductor White & White/Black
Bell Wire attached
Self-Threading Screw 1/4"-14x5/8" (2)
Insulated Staples
Ring Fastener (3)
Drywall Anchors (2)
Rail Grease
Carriage Bolt 1/4"-20x1/2" (2)
Wing Nut 1/4"-20 (2)
Rope
Handle
5
Remote Control
Visor Clip
Styrofoam
Belt
Header Bracket
Safety Labels
and
Literature
Belt Cap Retainer
Door Bracket
Curved Door
Arm Section
Straight Door
Arm Section