All One-Piece Doors - LiftMaster MERIK SECURITY+ 790LMK Manual Del Propietário

ALL ONE-PIECE DOORS

Assemble the Door Arm:
IMPORTANT: The groove on the straight door arm MUST face
away from the curved door arm (Figure 5).
• Fasten the straight and curved door arm sections together to
the longest possible length (with a 2 or 3 hole overlap).
• Make sure the garage door is fully closed. Connect the straight
door arm section to the door bracket with the 5/16"x1-1/4"
clevis pin.
• Secure with a ring fastener.
• Pull the emergency release handle, disconnecting the outer
trolley from the inner trolley by pulling straight down on the
emergency release handle and sliding the outer trolley back
toward the motor unit.
• Connect the curved door arm section to the trolley using the
5/16"x1-1/4" clevis pin and ring fastener.
NOTE: Adjusting the limits on the following page:
• The trolley will automatically connect. If not, review the trolley
lockout feature on page 33.
• When setting the up limit on the following page, the
door should not have a "backward" slant when fully open
as illustrated below. A slight backward slant will cause
unnecessary bucking and/or jerking operation as the door is
being opened or closed from the fully open position.
Inner Trolley
Door Arm
Connector Hole
Door Arm
Closed
Door
Outer Trolley
Emergency Release Handle
Inner Trolley
Open Door
Figure 5
CORRECT
Straight
Door Arm
Curved
Door Arm
(Groove
facing out)
Door
Door
Bracket
Bracket
Straight
Clevis Pin Straight
Clevis Pin
Arm
5/16"x1-1/4" Arm
5/16"x1-1/4"
Bolts
Bolts
5/16"-18x7/8
5/16"-18x7/8"
Door Arm
Correct Angle
28
INCORRECT
Straight
Door Arm
Curved
Door
Arm
Ring Ring
Fastener Fastener
Nuts
Nuts
Lock Lock
5/16"-18
5/16"-18
Washers
Washers
5/16"
5/16"
Outer Trolley
Door with
Backward Slant (Incorrect)
Curved
Curved
Door Arm
Door Arm