Cookson FCA - Adjusting the Drive Chain

6
M100 FireGard
TM
Chain & Crank
02/11
Bracket
Door Sprocket
View "B"
B
View "A"
View "B"
View "A"
Drive Sprocket
A
Door
Sprocket
Operator
Output
Sprocket
Incorrect
Correct
* Chain hoist shown. Hand crank similar.
ADJUSTING THE DRIVE CHAIN
NOTE: Use correct type, size and proper length of roller chain.
1. Adjust the drive chain by moving the mounting screws so that there is about 1/4” of slack when the
chain is depressed.
2. Once the drive chain has been tightened, then tighten the operator mounting screws.
RH
LH
Drive Chain
Door Sprocket
Drive Sprocket
1/4"
S1 . S2
Drive Chain
Door Sprocket
Drive Sprocket
1/4"
S1
S2