Installation Step; Determine Header Bracket Location - Merik 501M El Manual Del Propietario

INSTALLATION STEP 1

Determine Header Bracket Location

Installation procedures vary according to
garage door types. Follow the instructions
which apply to your door.
SECTIONAL DOOR AND ONE-PIECE
DOOR WITH TRACK(S)
Header
Wall
• Open your door to the highest
point of travel as shown. Draw
an intersecting horizontal line
on the header wall 5cm above
the high point. This height will
provide travel clearance for the
top edge of the door.
Proceed to Step 2, page 12.
Finished
Vertical
Ceiling
Guideline
2x4
Vertical
Guideline
Door
Sectional door
with curved track
IF THE HEADER BRACKET IS NOT
RIGIDLY FASTENED TO A STRUCTURAL
SUPPORT ON THE HEADER WALL OR
CEILING, THE SAFETY REVERSE SYSTEM
MAY NOT WORK PROPERLY (SEE PAGE 22). THE
DOOR MIGHT NOT REVERSE WHEN REQUIRED, AND
COULD CAUSE SERIOUS INJURY OR DEATH.
THE GARAGE DOOR SPRINGS, CABLES, PULLEYS,
BRACKETS AND THEIR HARDWARE ARE UNDER
EXTREME TENSION. DO NOT ATTEMPT TO
LOOSEN, MOVE OR ADJUST THEM YOURSELF.
SERIOUS PERSONAL INJURY OR DEATH COULD
RESULT. CALL FOR GARAGE DOOR SERVICE.
• Close the door and mark the inside
vertical centerline of the garage door.
• Extend the line onto the header wall
above the door.
Structural
Remember, you can fasten the
Supports
header bracket within 60cm of the
left or right of the door center only if
a torsion spring or center bearing
plate is in the way; or you can attach
it to the ceiling (refer to page 12)
when clearance is minimal.
If you need to install the header bracket
on a 25mm board (on wall or ceiling),
use lag screws (not supplied) to
securely fasten the 25mm board to
structural supports.
Ceiling
Header
Wall
2" Track
Highest Point
of Travel
10
Header
Wall
Track
2"
Highest Point
of Travel
Door
One-piece door
with horizontal track