Program The Travel Limits; Adjustment - Chamberlain 4142DC Owner's Manual

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.
Figure 1
Black
Button
Antenna
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 chain 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.
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.
Without a properly installed safety reversal system, persons
(particularly small children) could be SERIOUSLY INJURED
OR KILLED by a closing door or gate.
• Incorrect adjustment of garage door travel limits will interfere
• NEVER use force adjustments to compensate for a binding or
• If one control (force or travel limits) is adjusted, the other
• After ANY adjustments are made, the safety reversal system
Indicator
Light
Orange
Button
To prevent damage to vehicles, be sure fully open door
provides adequate clearance.
29
with proper operation of safety reversal system.
sticking garage door.
control may also need adjustment.
must be tested. Door MUST reverse on contact with
38 mm obstacle on the floor. Gate MUST reverse on contact
with 38 mm obstacle at the closing edge.
Figure 2
Push and hold
until the door
is at desired UP
position
Figure 3
Figure 4
BLACK
ORANGE
BLACK
ORANGE
or
Push either
button to stop
door at desired
DOWN position