Chamberlain 041D4671 Handleiding

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Replacement Instructions for Limit Switch Assembly 41D4671

You will need a 1/4" magnetic nut driver.

1.Fully close the garage door.

2.Disconnect power to the opener.

3.Remove the opener lens (refer to your owner’s

manual).

4.Remove the cover:

•Using a 1/4" magnetic nut driver, remove the two

screws recessed in the bottom of the cover.

•Unplug the wires to the light sockets inside, and

place the cover aside.

5.Lift off the control center access door and set aside.

6.Unfasten the receiver logic board assembly from the

chassis by removing the two screws inside the panel

under the top edges . Allow it to hang suspended(a)

by wires.

7.Disengage the limit switch assembly from the(b)

retention slots in the limit switch bracket (c) by

squeezing the top and bottom on the right near the

drive gear (see illustration).

8.Disengage the hook on the left and allow(d)

assembly to hang by wires.

9.Position the new limit switch in front of you as shown

in Figure 2. The drive gear controls the movement of

the center limit contact to the left (UP) or right

(DOWN). Rotate the gear until the center limit

contact touches the DOWN contact.

10.Remove the wires one at a time from the original

limit switch and reconnect them to the new

assembly.

11.Reverse steps 3-8 to install the new assembly and

reassemble the unit.

12.Restore power to the opener. Readjustment of the

UP and DOWN travel limits may be necessary. Refer

to your owner’s manual.

NOTE: A TEST OF THE SAFETY REVERSE SYSTEM

IS NECESSARY FOR SAFE OPERATION. Follow the

instructions on side two or in your owners manual.

1

b

c

d

a

(squeeze)

Figure 1

Figure 2

DN

UP

Brown

Wire

(Down)

Contact

LIMIT SWITCH ASSEMBLY

Grey

Wire

Yellow

Wire

(Up)

Contact Center Limit

Contact

Drive

Gear

To prevent possible SERIOUSINJURY or DEATH from

electrocution, disconnect power to opener BEFORE proceeding.

WARN

WARN

WARN

WARNWARNING

ING

ING

INGING

The garage door MUST be in the fully closed position during

installation.

CAUTION

CAUTION

CAUTION

CAUTIONCAUTION

Product specificaties