DuraShield Installation Manual
Chain Hoist – Inside Standoff – Da-lite Springtube
Chase Doors Inc.
800-543-4455
8/12
DuraShield Installation Manual RB0371
Page
7
Extended Guide Track Mounting Bracket Top Track Adjustment
6.
Setting Counterbalance spring tension and door position
The curtain straps must still be in place to tension the spring.
Using the chain hoist, roll the tube as though closing the door for 10 revolutions of
the roll. With the door in the open position latch the hoist chain to the chain stop.
Install the Stop Block mechanism on the chain as shown on page 5. Position it so that
the door will not roll up higher than the Clear Opening Height. Leave the curtain in
the fully opened position.