Sectional Doorinstallations - Craftsman 139.536481DM Manual Del Propietário

P_nnmg
Identify the type and height of your garage door. Survey your
garage area to see if any of the conditions below apply to your
installation. Additional materials may be required. You may find it
helpful to refer back to this page and the accompanying
illustrations as you proceed with the installation of your opener.
Dependingon your requirements, there are several installation
steps which may call for materials or hardware not included in the
carton.
• Installation Step 1 - Look at the wall or ceiling abovethe garage
door. The header bracket must be securely fastenedto structural
supports.
• Installation Step 5 - Doyou have a finished ceiling in your
garage? If so, a support bracket and additional fastening
hardware may be required.
• Installation Step 10- Dependingupon garage construction,
extension brackets or wood blocks may be neededto install
sensors.
• Installation Step 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 Outside Quick Releaseis required. See
Accessories 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" (6 mm). Otherwise, the safety reversal system may not
work properly. See Adjustment Step 3. Floor or door should be
repaired.
SECTIONAL DOORINSTALLATIONS
• Do you have a steel, aluminum, fiberglass or glass panel door?
If so, horizontal and vertical reinforcement is required
(Installation Step 11).
• The opener should be installed abovethe center of the door. If
there is a torsion spring or center bearing plate in the way of the
header bracket, it may be installed within 4 feet (1.2 m) to the
left or right of the door center. See Installation Steps 1 and 11.
• If your door is more than 7 feet (2.1 m) high, see rail extension
kits listed on Accessories page.
SECTIONAL DOORINSTALLATION
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with
glass panels, etc.). See page 23 for details.
Header Wall
Slack in chain tension
is normal when
garage door is closed.
Extension Spring
OR
Torsion Spring
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 16.
Motor unit
Vertical
Centerline
of Garage
Door
Wall-
mounted
Door
Control
4
ty Reversing Sensor
Gap between floor
and bottom of door
must not exceed 1/4" (6 mm).
Safety Reversing
Sensor
Access Door
0
_ Header CLOSED POSITION
Bracket
/ Trolley
....... r.......
Garage /
_/._ _ G_age // Chain
_ r-',-_-/ Spring_o/
_////._1/////A /j/Y-_tr_irght --B_]eera%nCy
//_/ Arm Rope&Handle
He_der __Curved d'm
Wall _"N_I \ Door
L\N I Door Arm
Garage __l Bracket
Door