Fusible Link (Optional) - Chamberlain GSD series Installation Manual

FUSIBLE LINK (OPTIONAL)

NOTE: Refer to Operator Dimensions in the introduction for
general information.
1
Mount chain retaining bracket to door, approximately
17.13"
4 feet (1.2 m) above the floor and 2" (5.1 cm) off center-line
(43.51 cm)
of door.
2
Attach eye bolt to the lower slot on disconnect assembly.
3
Secure fusible link mounting bracket to upper leading edge
of door (6 - 12" (15.2 - 30.5 cm) below top of door) so that
the fusible link will be in door opening when door is open.
4
Thread the fusible link chain through the eye bolt, then
through the eyelet in the weight mechanism, and then up
through the bottom of the disconnect pin.
5
Raise the weight to approximately 3' (.9 m) from floor
level and engage the chain in the slot of the chain retaining
bracket.
6
Couple the chain to itself around the weight so that the
chain cannot move through the eyelet in the weight.
13.08"
(33.22 cm)
7
Disengage the chain and allow the weight to hang from the
fusible link.
8
Leave a small amount of slack between the weight and the
disconnect pin and fasten a split key ring to the link on each
side of the disconnect pin so that the chain cannot pass
through the hole.
9
Cut off excess chain, leaving 6" (15.24 cm) to hang below
10.5" (26.67 cm)
chain retaining bracket.
10
Fasten large split key ring to end of chain.
11
Mount the weight guide to the door with weight protruding
above guide 3 - 4" (7.6 - 10.2 cm).
12
For bi-part doors install the second fusible link assembly
on the other door in the same manner. Be sure that one is
lower than the other so as not to interfere with each other
when the doors are fully closed.
13
IMPORTANT: TEST THE FUSIBLE LINK DISCONNECT
INSTALLATION AS FOLLOWS: Manually remove the fusible
link from the bracket and allow the weight to pull down on
the disconnect pin. Verify that the door is disconnected
and moves freely. If necessary, adjust spring on disconnect
assembly by moving top shaft collar up or down.
Installation
Door Travel Plus 4' (1.2 m) - 3" (7.62 cm)
17.46"
(44.34 cm)
4" (10.16 cm) Adjustable clearance for door movement between wall and operator.
Door Travel Plus 4' (1.2 m) - 3" (7.62 cm)
20.53"
(52.14 cm)
Eye Bolt
Manual Release
Manual Release
24" (60.96 cm) 24" (60.96 cm)
"S" Hook
Cylindical Weight
9
18"
(45.72 cm) Min.
Fusible Link
*Fusible Link
Cylindrical Weight
Cylindrical Weight
(33.02 cm)
*Fusible Link
"S" Hook
7.5" (19.05 cm) Max.
6" (15.24 cm) Min.
13"