Spring Mounting
Pad. 2 x 6” White
Pine or Denser.
Secured with min.
(4)5/16” x 4” lag bolts into header.
Top
Plate
Header
(2) 3/8” x 1”
or
Bolts
Perimeter Seal
1/2” x 3” Sleeve Anchor NOTE: Must secure sleeve anchors to building first then attach brackets to anchors
(2)3/8” Nuts and Washers
Steel
(1)Tamper - Resistant 5/16 X 2” Lag Screw
5/16” x 1”
and tapping screw
Fig. N-1
Secure each end bracket to the horizontal reinforcing angle using (2) 3/8” x 3/4” truss bolts and nuts. Anchor the wall mounting flange of the end bracket to the jamb using (2) 5/16” x
(2) 5/16” x 1”
Spring pads must be securely anchored now before proceeding. The pads must be flush (± 1/8”) with the jambs. Attach the spring center bearing brackets to the pad(s) using the following fasteners:
Wood: Secure each spring bearing bracket using (2) 5/16” x
(1) 5/16” x 2” tamper proof lag screw for the lower hole.
Steel: Secure each spring bearing bracket using (3) 5/16” x 1”
NOTE: The coupler support brackets only require (2) fasteners, where the spring bearing brackets require (2) fasteners in the lower slot and hole, then (1) fastener in the top slot.
Secure the stationary cone(s) (dead end) to the spring bearing bracket(s) using 3/8” bolts and nuts. NOTE:
Feed the cables (attached to the bottom bracket) up through the vertical track, behind the roller shafts and secure to the drum. Push the drum up against the race, of the end bearing bracket and secure to the shaft by tightening the set screws (solid shafts use 1/4” key(s) and set screws to secure drums). Rotate drum until cable is taut and apply vice grips to shaft, with end resting, against wall or jamb. This will hold cables onto drum. There must be at least 1/2 wrap of cable onto drum, if not contact
If top section is not assembled, do so now, before winding springs. Also make sure all hardware is securely attached to all sections.
Use appropriate diameter winding rods. (Snug fitting 1/2”, 5/8”, or 3/4”)
PG. 11