Planning - Craftsman 139.53990 Owner's Manual

Planning
Identify the type and height of your garage door.
Survey your garage area to see if any of the
conditionsbelow apply to your installation.Additional
materials may be required. You may find it helpful to
refer back to this page and the accompanying
illustrationsas you proceed with the installationof
your opener.
Depending on your requirements,there are several
installationsteps which may call for materialsor
hardware not included in the carton.
• InstallationStep 1 - Look at the wall or ceiling
above the garage door.The header bracket must
be securely fastened to structuralsupports.
• InstallationStep 5 - Do you have a finished ceiling
in your garage? If so, a supportbracket and
additionalfastening hardware may be required.
• InstallationStep 10- Depending upon garage
construction,extension brackets or wood blocks
may be needed to install sensors.
• InstallationStep 10 -Alternate floor mounting of
the safety reversing sensor will require hardware
not provided.
Do you have an access door in addition to the
garage door? If not, Model 53702 Emergency Key
Release is required. See Acoessodes page.
Look at the garage door where it meets the floor.
Any gap between the floor and the bottom of the
door must not exceed 1/4". Otherwise, the safety
reversal system may not work properly. See
Adjustment Step 3. Floor or door should be
repaired.
SECTIONAL DOOR INSTALLATIONS
• Do you have a steel, aluminum, fiberglass or glass
panel door? If so, horizontal and vertical reinforce-
ment is required (InstallationStep tl).
• The opener should be installed above the center of
the door. If there is a torsion spdng or center
beadng plate in the way of the header bracket, it
may be installed within 4 feet to the left or right of
the door center. See Installation Steps 1 and 11.
• If your door is more than 7 feet high, see rail
extension kits listed on Accessories page.
SECTIONAL DOOR INSTALLATION
Hodz.ordal endvertical r ein forcement
isneededforI_htweight garagedoors
(fiberglass, steel,aluminum, d oorwith
glasspanels,etc.).Seepage24 fordetails. Slack in chain fension
ISnormal when
garage door is closed.
FINISHED CEILING
Suppod Ixacket &
fastening hardware
is requ_ed,
See page 17.
Rail
Wall-
mounted
Door
Control V
Gap between floo_
aed bottom of door
Safety Reve_g Sensor must not exceed I/4"
Safety
Reversing
Sensor
Header CLOSED POSITION
Bracket
Trolley
Stop Bolt Trolley
Chale
Emergency
Release
Rope & Handle
_Door
Arm
Door
Bracket