Chamberlain MT5011U - Typical Installation: Header Bracket; Mounting the Header Bracket

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TYPICAL INSTALLATION
The trolley operator is generally mounted over the center of the door. However, off center mounting may be required due to interfering
structures or location of door stile / top section support. Typically, the operator may be mounted up to 24 inches (60.96 cm) off center
on torsion spring doors. Extension springs require center mounting.
Mark the center of the door. Extend the line on to the header
wall and the ceiling.
Level (Optional)
Determine and mark the highest point of door travel.
Level
High Point of
Door Travel
Header Wall
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Highest Point
of Door Travel
Horizontal Line
Center header bracket over vertical center line and horizontal
line created in step 2. Drill appropriate pilot holes to
accommodate mounting hardware.
4" (10 cm)
Header Bracket
3
To prevent possible SERIOUS INJURY or DEATH:
• Header bracket MUST be RIGIDLY fastened to structural
support on header wall or ceiling, otherwise door might not
reverse when required. DO NOT install header bracket over
drywall.
• Concrete anchors MUST be used if mounting header bracket or
2x4 into masonry.
• NEVER try to loosen, move or adjust door, springs, cables,
pulleys, brackets, or their hardware, ALL of which are under
EXTREME tension.
• ALWAYS call a trained door systems technician if door binds,
sticks, or is out of balance.
ATTENTION
AVERTISSEMENT AVERTISSEMENT
AVERTISSEMENT
WARNING WARNING
CAUTION
WARNING
WARNING
PRECAUCIÓN
ADVERTENCIA
ADVERTENCIA ADVERTENCIA
INSTALL THE HEADER BRACKET
Secure the header bracket to the header using the appropriate
method.
Hardware
(Not Provided)
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