Chamberlain GSD Addendum page 7

NOTE: For bi-parting doors, it is necessary to bring
the doors to a fully closed position for proper
synchronization. With both disconnect pins and
engaged in their respective carriages, lift the drive
chain over the three studs on the bi-part carriage and
secure the chain to the slider with the hardware
provided (see figure 5).
1. Mount chain retaining bracket to door,
approximately 4 ft. above the floor and 2 inches off
centerline of door as shown in figure 1.
2. Attach eye bolt to lower slot on disconnect
assembly (see figure 1).
3. Secure fusible link mounting bracket to upper
leading edge of door (6 to 12 inches below top of
door) so that the fusible link will be in door opening
when door is open (see figure 1).
4. Thread the fusible link chain through the eye bolt
as shown, 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 feet 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.
7. Disengage the chain and allow the weight to hang
from the fusible link.
ELECTRICAL CONNECTIONS & OPERATING INSTRUCTIONS
POWER AND CONTROL WIRING:
Refer to the Owners Manual supplied with your
operator for all power and control wiring.
ELECTRICAL OPERATION:
The door can be operated by means of the three
button control station or by other controls, when
provided. Refer to Control Connection Diagram
located on the back cover of the Owners Manual for
all control options.
FUSIBLE LINK INSTALLATION (OPTIONAL)
7. Adjust the screw collars on the disconnect pin so
that it enters into the trolley bracket about 3/4".
8. Mount the chain retaining bracket (with keyhole
slot) at a convenient height on the door, directly
below and aligned with disconnect chain. Mount it so
that keyhole is in the horizontal plane (repeat for bi-
part door).
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" to hang below
chain retaining bracket.
10. Fasten large split key ring to end of chain.
11. Mount the weight guide to the door as shown,
with weight protruding above guide 3 to 4 inches.
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.
MANUAL OPERATION:
The door cannot be moved manually with the slider
carriage connected. However, a quick disconnect pin
and chain mechanism is provided to uncouple the
door from the slider carriage. To disengage the door,
simply pull the chain down and engage it in the
keyhole slot an the bracket provided for this purpose.
With the mechanism disconnected, the door can be
manually opened or closed.
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