d. Important-
Th
e wheels must be properly aligned for FULL contact to
ensure that the wheels will not slip during opening or closing. Adjust the
wheel height on the speaker with the included allen wrench, if necessary.
Th
e help of an assistant will be required to adjust the wheel height. Raise
the top frame and, with the help of an assistant, hold the speaker in a
vertical position while loosening the set screws to make the height
adjustment. Reinstall the sha
ft
into the top frame pivot hole while pulling
back the motor assembly to allow for wheel clearance. Slide the loosened
wheel up or down on the sha
ft
to have maximum contact with the drive
wheel. Tighten the two set screws.
e. To con
fi
rm that the speaker panel can move freely, pull the drive motor
assembly back with your thumb so that the drive wheel is disengaged from
the idler wheel. Slowly move the speaker panel through it's 180 degree
range of motion to check for excessive resistance. If the MMC 2 is installed
correctly for plumb and level (so that the motor is not pushing the panel
"uphill" upon opening or closing), and the speaker panel is free to move
without undue resistance, our testing and
fi
eld experience has shown that
the motor and drive wheels will reliably open and close the MMC 2.
f.
Th
e template provides very accurate placement of the top and bottom
frame holes. However, mistakes can happen. In the event the gap between
the top or bottom frame and the speaker is not correct, a modi
fi
cation is
possible to allow for some adjustment of the gap spacing.
Th
e frame key
hole slot can be lengthened with a
fi
le or Dremel tool to allow the frame to
be lowered on one side. However, the head of the pan-head screw will
impact on the interior portion of the frame. It is necessary to modify the
screw with a
fi
le or grinder. First, make certain that the screw to be
modi
fi
ed is adjusted to the correct amount to ensure a tight
fi
t of the
frame. Mark the top portion of the screw head with a permanent marker
and remove the screw. Grind or
fi
le the marked portion of the screw and
reinstall.
Revision-- 7-25-15
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