FireGard™ Chain and Crank
5
Bracket
Door Sprocket
View "B"
B
View "B"
View "A"
View "A"
A
Drive Sprocket
Door
Sprocket
Operator
Drive
Sprocket
Correct
Incorrect
* 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 tilting or move the operator 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.
LH
S1 . S2
Drive Chain
Door Sprocket
Drive Sprocket
1/4"
Drive Chain
Door Sprocket
Drive Sprocket
1/4"
RH
S1
S2
S1
S2
