Chamberlain 6608CD Manual

Chamberlain Ikke kategoriseret 6608CD

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Side 1/4

Eight-Foot Chain Rail Extension Kit

Model 6608CD

BEFORE YOU BEGIN:

If you have a completely installed garage door opener, the rail/opener

assembly must be taken down.

• The garage door opener support brackets will require repositioning and

the addition of an extra bracket for stability due to increased rail length.

• UP and DOWN travel limits must be readjusted after installation.

CARTON INVENTORY:

Front Rail Section

Support Bracket and Fastening Hardware

Chain Extension Piece

Emergency Release Rope

Master Link

To prevent possible SERIOUS INJURY or DEATH:

• Disconnect ALL electric and battery power BEFORE performing ANY

service or maintenance.

The garage door MUST be in the fully closed position during

installation.

WARNING: This product can expose you to chemicals including

lead, which are known to the State of California to cause

cancer or birth defects or other reproductive harm. For more

information go to www.P65Warnings.ca.gov

IF THIS IS AN EXISTING INSTALLATION:

1. Pull down on the emergency release handle, then disconnect the

trolley from the door arm.

2. Disconnect the rail/opener assembly from the header bracket and

support brackets, and place it on the floor.

3. Remove the outer nut from the trolley shaft and set aside (Figure 3).

4. Disconnect the chain from the trolley and trolley threaded shaft. Save

the master link assemblies for reinstallation.

NOTE: To disconnect the master link, press on the open end of the clip.

5. Set the chain aside as it will be used to complete the extension kit.

Make sure it does not get twisted.

6. Remove idler pulley assembly and set aside (Figure 4).

7. Disconnect the front rail section by using a screwdriver tip to pry up

the outer tab on each side of the rail (Figure 5). Discard the front rail.

8. Align the replacement front rail section with the existing rail making

sure the rail tab is facing up. Slide the front rail onto the existing rail;

tabs along the side will lock into place (Figure 6).

IF THIS IS A NEW INSTALLATION:

1. Replace the emergency release rope packaged with your garage door

opener with the longer emergency release rope included in this kit.

2. Use the front rail section included in this kit in place of the front rail

section packaged with your garage door opener (Figure 1).

3. Connect the chain extension piece to the full chain packaged with

your garage door opener using the master links (Figure 2).

4. Refer to Assembly Step 1 in your owner’s manual to complete the

assembly, installation and adjustment of your garage door opener.

When instructed, connect the trolley threaded shaft to the end of the

chain extension piece.

NOTE: After hanging the opener, add the additional support bracket for

stability. See Add An Additional Support Bracket on reverse side.

Rail Tab

Trolley

Threaded

Shaft

Outer Nut

Replacement

Front Rail Section

Existing Front Rail Section

Idler Pulley

Master Link

Trolley

Chain extension piece

included in kit

Full chain packaged with

garage door opener

Trolley threaded shaft packaged

with garage door opener

Master linkMaster link

Rail sections packaged with

garage door opener

Front rail section

included in extension kit

Figure 1

Figure 2

Figure 3 Figure 4 Figure 5

Figure 6

To avoid possible SERIOUS INJURY from a falling garage door opener,

fasten it SECURELY to structural supports of the garage. Concrete

anchors MUST be used if installing any brackets into masonry.

ADD AN ADDITIONAL SUPPORT BRACKET:

Cut the enclosed support bracket to fit across the installed support

brackets. Fasten the cross brace to the top and bottom hole of the support

brackets using 5/16" -18x7/8" hex bolts, 5/16" lock washers and 5/16" -18

nuts.

Lock Washer 5/16"

Nut 5/16"-18

Lock Washer 5/16"

Nut 5/16"-18

Hex Bolt 5/16"-18x7/8"

Support Bracket REPLACEMENT PARTS

Part No. Description

041B1986-08 Eight-Foot Chain

41A3021 Emergency Release Rope

4A1008 Master Links (2)

www.chamberlain.com

IF THIS IS AN EXISTING INSTALLATION (CONTINUED):

9. Install idler pulley assembly (Figure 7).

10. As a temporary stop, insert a screwdriver into the hole near the rail

tab. Slide the trolley to this point.

11. Use a flathead screwdriver to lift the rail tab until the tab is vertical (90°)

(Figure 8).

12. Pull the chain around the idler pulley. Connect the chain to the

retaining slot on the trolley with master link, as shown.

13. With the trolley against the screwdriver, pull the chain along the rail

toward the motor unit around the sprocket to the trolley assembly. The

sprocket teeth must engage the chain (Figure 9).

14. Connect the chain extension piece to the full chain with the master link.

15. Check to make sure the chain is not twisted, then connect it to the

threaded shaft with master link.

16. Insert the trolley threaded shaft through the hole in the trolley. Be sure

the chain is not twisted. Loosely thread the outer nut onto the trolley

threaded shaft. Remove the screwdriver.

17. Tighten the outer nut until the chain is approximately 1/4" (6 mm)

above the base of the rail at it's midpoint. Tighten the inner nut to

secure the adjustment (Figure 10).

18. Replace the old emergency release rope with the new, longer

replacement rope using overhand knots.

19. Refer to Installation Step 5 in your owner’s manual to complete the

re-installation and adjustment of your garage door opener. NOTE: After

hanging the opener, add the additional support bracket for stability.

See Add An Additional Support Bracket below.

20. Reconnect door control and sensor wires.

21. Reconnect power.

22. Program travel limits and test the safety reversal system according to

the owner's manual.

Trolley

Threaded

Shaft

Outer Nut

Retaining Slot

Chain Extension

Piece

Idler Pulley

Master Link

Trolley

Rail Tab

Master Link

Inner nut

Mid length of RailBase of Rail

Chain

1/4" (6 mm)

Figure 7

Figure 9

Figure 10

Figure 8

Produkt Specifikationer

Mærke:	Chamberlain
Kategori:	Ikke kategoriseret
Model:	6608CD

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