22
Limit switch adjustments must be completed
before checking contact reverse.
1. Check contact reverse.
• Open door using wall control.
• Lay 2" x 4" board flat in center of doorway
(Fig. 5-3).
• Close door using wall control.
– Door stops and reverses when it hits board
within 2 seconds, if properly set.
NOTE: If door does not reverse, decrease “CLOSE”
force until door reverses.
NOTE: If door still does not reverse, move limit
switch toward door.
NOTE: Door must contact 2" x 4" before the
carriage strikes the “CLOSED” limit switch. If not,
adjust the limit switch.
2" x 4" laid flat
Fig. 5-3 Contact reverse
CONTACT REVERSE
22
1. Adjust “OPEN FORCE” (Fig. 5-2).
• Place door in closed position using wall control.
• Open lens cover.
• Find “OPEN FORCE” knob on power head.
• Turn knob gently counterclockwise until it stops.
NOTE: Little effort is required to turn adjusting knob.
Door opens rapidly.
• Keep path clear.
• Position ladder to the side of power head so
it is clear of all moving parts of operator
and door.
Set door operator to use minimum force needed
to operate door.
WARNING
• Run operator using wall control.
• Observe door runs to “OPEN” limit switch.
– If not turn “OPEN FORCE” knob
clockwise slightly.
• Repeat running door and adjusting force knob
until door runs to “OPEN” limit switch.
NOTE: Set minimum force needed to make door
open.
2. Adjust “CLOSE FORCE” (Fig. 5-2).
• Place door in the open position using
wall control.
• Find “CLOSE FORCE” knob on power head.
• Turn knob gently counterclockwise until it stops.
NOTE: Little effort is required to turn adjusting knob.
• Run operator using wall control.
• Observe door runs to “CLOSE” limit switch.
– If not turn “CLOSE FORCE” knob
clockwise slightly.
• Repeat running door and adjusting force knob
until door runs to “CLOSE” limit switch.
• Close lens cover.
NOTE: Set minimum force required to make door
close.
FORCE
ADJUSTMENTS
Fig. 5-2 Controls
FORCE ADJUSTMENT
NOTE: To protect your new investment, your
Excelerator
®
is equipped with a timer and cycle
counter which work together to prevent any
chance of heat damage to electrical circuits
caused by too many cycles in too short a time. If
your operator suddenly stops responding to the
wall button–DO NOT UNPLUG THE UNIT–simply
wait 10 minutes for the timer/cycle counter to
reset itself, and try again.
(Unplugging the unit will prevent the timer/cycle
counter from resetting.)
