Preparing Your Garage Door; Tools Needed - Chamberlain 8500 Manual

Introduction

Preparing Your Garage Door

BEFORE YOU BEGIN:
• Disable locks.
• Remove any ropes connected to the
garage door.
Complete the following test to make sure
the garage door is balanced and is not
sticking or binding:
1. Lift the door halfway up. Release the
door. If balanced, it should stay in
place, supported entirely by its springs.
2. Raise and lower the door to check for
binding or sticking.
If your door binds, sticks, or is out of
balance, call a trained door systems
technician.
3. Verify equal cable tension on each side
of door. Cable tension should remain
equal during the entire travel of the
door.
Sectional Door

Tools Needed

During assembly, installation and adjustment of the garage door opener, instructions will
call for hand tools as illustrated below.
Stepladder
To prevent possible SERIOUS INJURY or DEATH:
• ALWAYS call a trained door systems technician if garage door binds, sticks, or is
out of balance. An unbalanced garage door may NOT reverse when required.
• NEVER try to loosen, move or adjust garage door, door springs, cables, pulleys,
brackets or their hardware, ALL of which are under EXTREME tension.
• Disable ALL locks and remove ALL ropes connected to garage door BEFORE
installing and operating garage door opener to avoid entanglement.
To prevent damage to garage door and opener:
• ALWAYS disable locks BEFORE installing and operating the opener.
• ONLY operate garage door opener at 120 V, 60 Hz to avoid malfunction and
damage.
• DO NOT exceed 10 complete cycles of door operation per hour.
Volts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 Vac - 60 Hz, ONLY
Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 AMP
Rated Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325 in. lb/sec
Drill Tape Measure
5/32", 3/16", 5/16"
and 3/4" Drill Bits
1/4", 5/16" & 3/8" Sockets
and Wrench with 6" Extension
Specifi cations
Pliers
Pencil
Screwdriver
Adjustable End Wrench
Torque Meter (not shown)
4
10 Cycles per Hour
Wire Cutters
3/16" and 1/8"
Hex Key Wrench
Claw Hammer
Needle Nose Pliers