17
Step 38: Extension Spring Assembly
32FF
70
Tie the safety cable securely to the horizontal
curve track as shown.
11
Safety Cable
Horizontal
Curve Track
Repeat steps 4 through 11 for the other spring.
Lowering the door and spring adjustment.
Warning! Until all adjustments are completed, always assume you will have to physically support the full weight
of the door. Make sure adequate help is available.
Warning! Never place your fi ngers in or near section joints while the door is moving.
Warning! All spring component parts whether part of the spring assembly, attached to the door, or attached to
the wall are now under tension and are extremely dangerous.
Warning! Spring adjustments from this point onward must be performed in accordance with all warnings and
directions as previously stated.
Warning! Spring adjustments can only be performed when door is in fully open position and door restraints are
applied to tracks.
With one person holding door in the fully open position, carefully remove locking pliers.
Slowly lower door, testing the balance of the springs. If door does not lift off of the fl oor by itself, or does not roll back to
the fl oor when not supported, it is properly counterbalanced.
If door lifts off of fl oor by itself, the springs are too strong and the initial stretch must be reduced.
If door rolls back to fl oor, the springs are too weak and the initial stretch must be increased.
Finalize the track adjustments
Operate door through one full cycle. Check door stops and top fi xture for proper seal. If door is not functioning correctly,
check for binding against jamb, header or tracks.
Cable
Knot
