Chamberlain 2500B - Manual (Page 24)

4. Open and close the door with the remote control or
door control 2 or 3 times.
• If the door does not stop in the desired UP
(open) position or reverses before the door stops
at the DOWN (close) position, proceed to
Adjustment Step 2 Setting the Force.
• If the door stops in both the desired UP (open)
and DOWN (close) positions, proceed to
Adjustment Step 3, Test the Safety Reversal
System.
24
Without a properly installed safety reversal system,
persons (particularly small children) could be
SERIOUSLY INJURED or KILLED by a closing garage
door.
• Incorrect adjustment of garage door travel limits will
interfere with proper operation of safety reversal
system.
• NEVER use force adjustments to compensate for a
binding or sticking garage door.
• If one control (force or travel limits) is adjusted, the
other control may also need adjustment.
• After ANY adjustments are made, the safety reversal
system MUST be tested. Door MUST reverse on
contact with 1-1/2" high object (or 2x4 laid flat) on
floor.
WARNING
CAUTION WARNING
WARNING
To prevent damage to vehicles, be sure fully open door
provides adequate clearance.
WARNING
CAUTION WARNING
WARNING
ADJUSTMENT STEP 1
Program the Travel Limits
Travel limits regulate the points at which the
door will stop when moving up or down. Follow
the steps below to set the limits.
To program the travel limits:
1. Press and hold the black button until the yellow
indicator light starts flashing slowly then release.
2. Push and hold the black button until the door
reaches the desired UP (open) position (Figure 2).
Adjust the position of the door by using the black
and orange buttons. Black moves the door UP
(open) and orange moves the door DOWN (close).
Check to be sure the door opens high enough for
your vehicle.
NOTE: Refer to previous page for correct door
position for one-piece door.
3. Push the remote control or door control (Figure 3).
This sets the UP (open) limit and begins closing
the door. Press either the black or orange button
before the door hits the floor. The door will stop.
Adjust the desired DOWN (close) limit position
using the black and orange buttons (Figure 4).
Check to be sure the door is fully closed without
applying excessive pressure on the rail (rail should
not bow upwards and the belt should not sag or
droop below the rail). Push the remote control or
door control (Figure 3). This sets the DOWN
(close) limit and begins opening the door.
NOTE: If neither the black or the orange button is
pressed, the door will reverse off the floor and the
DOWN travel limit will be set automatically.
BLACK ORANGE
Push and hold
until the door
is at desired UP
position
Figure 2
Orange
Button
Black
Button
Antenna
Indicator
Light
Figure 1
Figure 3
BLACK ORANGE
Push either
button to stop
door at desired
DOWN position
Figure 4
or
LOCK
LIGHT