NOTE: If you have torsion keyed shaft(s), insert (1) key into the slot of both the cable drum and the slot in the torsion keyed shaft, as shown.
Rotate the left hand drum and torsion shaft until counterbalance lift cable is taut. Now attach locking pliers to the torsion shaft and brace locking pliers up against jamb to keep counter- balance lift cable taut. Repeat for right hand side.
IMPORTANT: Inspect each counterbalance lift cable making sure they are seated properly onto the cable drums and that both counterbalance lift cables have equal tension.
Once the counterbalance cables are set and if applicable tighten the coupler assembly together by tightening the (3) 3/8” - 16 nylon hex lock nuts to secure the coupler halves together.
Typicall left hand end | Typicall left hand | Torsion shaft / |
bearing bracket | cable drum | Torsion keyed shaft |
c. Counterbalance lift cables are correctly installed and wound onto cable lift drums. d. Counterbalance lift cables are taut and have equal tension on both sides.
e. Cable lift drums are against end bearing brackets and set screws are tight. f. Torsion spring or springs are installed correctly.
g. Review the label attached to the spring warning tag, to determine number of spring turns required.
NOTE: Door MUST be closed and locked when winding or making any adjustments to the torsion spring(s).
WarningARNING
Failure to ensure door is in a closed position and to place vice clamp onto vertical track can allow door to raise and cause severe or fatal injury.
Counterbalance |
lift cable |
Counterbalance lift cable hooked in cable |
drum |
Jamb |
Locking pliers
Typicall left hand end bearing bracket
Winding Bars | Size Of Winding Bar | Spring Diameter |
(Steel Rods) | (Inches) | Used On |
| 1/2” dia. x 18” | 2” and |
| 5/8” dia. x 24” | |
|
| |
| Typical sections |
Vice clamps /
and outer rail of vertical track
Vice clamps above third track roller on both sides of door
Bottom section
Key
Counterbalance lift cable
Typicall left hand cable drum
Set screws
Torsion shaft /
Torsion keyed shaft(s)
24 | Chalking Torsion Spring(s) | |
Tools Required: Step Ladder, Chalk | ||
|
Draw a chalk line horizontally along the center of the torsion spring coil(s). As the torsion spring is wound, the chalk line will create a spiral. This spiral can be used to count and determine the number of turns that are applied on the torsion spring.
|
| Original horizontal chalk line, prior | |
|
|
| to winding |
Torsion | Center | Torsion | Winding |
shaft | bracket | spring coils | cone |
|
| Spirals created after winding |
25 | Securing Door for Spring Winding | |
Tools Required: Vice Clamps | ||
|
With the door in the fully closed position, place vice clamps /
NOTE: Check the following before attempting to wind torsion spring(s): a. Counterbalance lift cables are secured at bottom corner brackets. b. Counterbalance lift cables are routed unobstructed to cable drums.
26 | Winding Spring(s) |
Tools Required: Step Ladder, Approved winding bars, 3/8” Wrench, Leather | |
gloves, Safety glasses |
WarningARNING
Winding torsion spring(s) is an extremely dangerous proce- dure and should be performed only by a trained door system technician using proper tools and instructions.
WarningARNING
Use only specified winding bars, as stated in Step Securing Door for Spring Winding. DO NOT SUBSTITUTE with screwdriv- ers, pipe, etc. Other tools may fail or release from the spring cone and cause serious personal injury.
WarningARNING
Prior to winding or making adjustments to the springs, en- sure you’re winding in the proper direction as stated in the Installation Instructions. Otherwise the spring fittings may release from spring if not wound in the proper direction and could result in severe or fatal injury.
Position a ladder slightly to the side of the spring so that the winding cone is easily acces- sible, and so your body is not directly in line with the winding bars.
Check the label attached to the spring warning tag for the required number of complete turns to balance your door.
Door Height | Approximate Spring Turns |
|
|
6’0” | |
|
|
6’3” | |
|
|
6’6” | |
|
|
6’8” | |
|
|
6’9” | |
|
|
7’0” | |
|
|
15