Chamberlain 3850 Program the Travel Limits, NOTE:, Figure, Figure, Figure, Figure, ADJUSTMENT STEP, Setting the UP position:, Setting the DOWN position:

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

Indicator

Light

Black Button

Purple Button

To program the travel limits:

Adjust the position of the door by using the black and purple buttons. Black moves the door UP (open) and purple moves the door DOWN (close).

1.Setting the UP position: 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).

NOTE: Check to be sure the door opens high enough for your vehicle.

3.Push the remote control or door control (Figure 3). This sets the UP (open) limit and begins closing the door.

4.Immediately when the door begins to move down, press and release either the black or purple button. This will stop the door.

5.Setting the DOWN position: Push and hold the purple button until the door reaches the desired DOWN (closed) position (Figure 4).

6.Once the door is closed, if there appears to have too much pressure on the door, you may toggle the door back and forth using the black and purple buttons to reach the desired closed position.

7.Push the remote control or the door control (Figure 3). This sets the DOWN (close) limit and should bring the door to the open position.

•If the opener is not stopping exactly where you would like it, repeat steps 1 through 7 and program the limits again.

•When the unit stops in both the desired up (open) and down (close) positions, proceed to Adjustment Steps 2, Setting the Force.

WARNING

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.

•After ANY adjustments are made, the safety reversal system MUST be tested. Door MUST reverse on contact with 1-1/2" (3.8 cm) high object (or 2x4 laid flat) on floor.

CAUTION

To prevent damage to vehicles, be sure fully open door provides adequate clearance.

Figure 2

Indicator Light

BLACK

Push and hold

until the door is at desired UP position

PURPLE

Figure 3

or

LIG HT

LO CK

Figure 4

Indicator Light

BLACK

Push either button to stop door at desired DOWN position

PURPLE

23