General Installation Notes; Preparing Door For Opener - Overhead door 450A Installation Instructions And Owner's Manual

GENERAL INSTALLATION NOTES
Preparing Door for Opener
The following procedures must be performed before opener can be installed. Failure to com-
plete the following procedures can cause opener failure and/or hazardous conditions which
could cause personal injury.
1. Check working condition of door. Door should operate freely without sticking or bind-
ing, and should not have to be held up or down. Lubricate door rollers and hinges with
SAE
30
wt • o i I •
2. If any part of the door is worn or broken, call a qualified door service person to repair
it before the opener is installed.
WARNING
Door is under extreme spring tension. Repairs and adjustments, especially to
cables and spring assembly, can
be
hazardous and can result in severe personal
injury. Repairs and adjustments should be performed only by qualified door
service people.
3. If door is equipped with a locking device, make it inoperative by permanently securing
the locking bar in an unlocked position.
CAUTION
CAUTION
Remove any lift or pull rope to avoid
entrapment by rope when the door is
opened.
It is recommended that the top section
of door be strutted on doors 16 feet
wide or larger.
CAUTION
This opener cannot be installed on garage
doors where the headroom is less than 1-3/4".
Headroom is the distance between the ceiling
and the high arc of the door's travel.
WARNING
This opener is not designed for use
with one piece doors.
CAUTION
Opener must be properly grounded
to prevent personal injury and
damage to opener components.
HEADE A
t -314" MIN.
HEADROOM
CEILING
... - HIGH ARC Of
... DOOR TRAVEL
CAUTION
DO NOT USE lighted-type pushbutton.
See troubleshooting chart, page 17.
WARNING
DO NOT CONNECT ELECTRICAL
POWER TO UNIT UNTI.. INSTRUC-
TED TO DO SO.
IMPORTANT
For proper and safe use of the installed opener, carefully read the
the Owners Information beginning on Page 15.
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