Chamberlain 7708CB 7708CB FOR CHAIN DRIVE OPERATORS

Chamberlain 7708CB Manual

Get Chamberlain 7708CB PDF manuals and user guides View all Chamberlain 7708CB manuals
Add to My Manuals
Save this manual to your list of manuals

Chamberlain 7708CB manual content summary:

  • Chamberlain 7708CB | 7708CB FOR CHAIN DRIVE OPERATORS - Page 1
    adjustments and test the safety reversal system according to the owner's manual. Eight-Foot Rail Extension Kit Model 7708CB 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
  • Chamberlain 7708CB | 7708CB FOR CHAIN DRIVE OPERATORS - Page 2
    it SECURELY to structural supports of the garage. Extension 1 41A5807-1 8' Chain/Cable Assembly 1 Hex Bolt 5/16"-18x7/8" Nut 5/16"-18 Lock Washer 5/16" 41A3021 Rope 1 4A1008 Master Link Kit 1 Hanging Bracket (Cross Brace) Not shown actual size 114A2746F © 2013, The Chamberlain
  • Chamberlain 7708CB | 7708CB FOR CHAIN DRIVE OPERATORS - Page 3
    supports de montage, et placer cet ensemble sur le sol. AVERTISSEMENT 3. Retirer l'écrou extérieur (Figure 1) de l'arbre du chariot et mettre de côté. 4. Détacher les deux ensembles de maillon principal du chariot (Figure 1) et jeter. 5. Retirer l'ensemble de poulie-guide d'instruction. ATTENT
  • Chamberlain 7708CB | 7708CB FOR CHAIN DRIVE OPERATORS - Page 4
    -porte SOLIDEMENT aux solives du ATTENTION garage. On DOIT utiliser des ancrages de béton si les supports sont posés dans la maçonnerie. Figure 3 Rondelle-frein de 5/16 po Écrou de 41A3021 Corde 1 4A1008 Maillon de raccord 1 114A2746F © 2013, The Chamberlain Group Inc. Tous droits réservés
  • 1
  • 2
  • 3
  • 4
Eight-Foot Rail Extension Kit
Model 7708CB
BEFORE YOU BEGIN:
•
The trolley must be in down (closed door) position during assembly
and installation.
If you have a completely installed garage door opener,
the rail/opener assembly must be taken down. UP and DOWN Limits must
be readjusted after installation.
•
Opener hanging brackets will require repositioning and the addition of an
extra bracket for stability due to increased rail length.
IF THIS IS A NEW INSTALLATION:
Use the
front (header) rail section, chain/cable assembly, and longer
emergency release rope in this kit in place of those packaged with your
garage door opener. Complete the assembly, installation, and adjustment of
your opener according to your owner’s manual, with the exception of
adding an additional hanging bracket for stability.
IF THIS IS AN EXISTING INSTALLATION, CONTINUE AS FOLLOWS:
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
hanging brackets, and place it on the floor.
3.
Remove the outer nut
(Figure 1)
from the trolley shaft and set aside.
4.
Disconnect the two master link assemblies from the trolley
(Figure 1)
and discard.
5.
Remove idler pulley assembly and set aside.
6.
Remove the chain/cable assembly and discard.
7.
Push the trolley back toward the opener. Disconnect the front rail
section by using a screwdriver tip to pry up the outer tab on each
side of the rail, then slide it off the center rail. Discard the front rail
(Figure 2)
.
8.
Align the new front rail with the existing rail assembly, keeping the cut
out “window” at the front (header) end. Be sure to keep it right side up:
the idler pulley bolt hole above the window is larger on top of the rail
than on the bottom. Slide the front rail onto the assembly; tabs along
the side will lock into place.
9.
As a temporary stop, insert a screwdriver into the hole 10" (25 cm)
from the front end of the rail
(Figure 1)
. Slide the trolley assembly to
this point.
10. Locate the rail tab.
Use a flathead screwdriver and lift the rail tab until
the tab is vertical (90°)
(Figure 2)
.
11.
Refer to your owner’s manual to complete the assembly, re-installation
and adjustment of your opener.
NOTE:
Before hanging the opener, an
additional hanging bracket is necessary for stability. See Adding An
Additional Hanging Bracket on reverse side.
(Replace the old emergency
release rope with the new, longer replacement rope.)
12.
Reconnect power.
13. Make adjustments and test the safety reversal system according to the
owner's manual.
To prevent possible SERIOUS INJURY or DEATH:
•
Disconnect ALL electric and battery power BEFORE performing
ANY service or maintenance.
Figure 1
Figure 2
The garage door MUST be in the fully closed position during
installation.
To remove rail pry both
end tabs of front
rail slightly outward
Idler Bolt hole
(KEEP LARGER
ONE ON TOP)
NEW
FRONT RAIL
CORRECT
INCORRECT
Rail Tab
Rail Tab
Threaded
Shaft
Outer
Nut
Front Rail
Section
Inner
Nut
Lock
Washer
Master
Link
Master
Link
Idler Pulley