Norton 9303BCH x 9328H 689 Door Closer, Regular Hold Open Arm w/ Parallel Bracket and Shoe, Silver Aluminum Painted Finish

Norton 9303BCH x 9328H 689 Door Closer, Regular Hold Open Arm w/ Parallel Bracket and Shoe, Silver Aluminum Painted Finish

Regular Arm
This is the only pull-side application for the 9300BC series door closer. It is the most power-efficient application for a door closer. Sufficient frame, door and/or ceiling clearance must be considered. Since the arm assembly projects directly out from the frame, this application may present an aesthetics issue or be prone to vandalism.

Parallel Arm
This application provides the most appealing design appearance for the 9300BC series door closer. It is on the push side of the door and the arm assembly extends almost parallel to the door. In the closed position, there is very little or no hardware projecting beyond the frame face in most situations. Due to the geometry of the arm it is approximately 25% less power efficient than a regular arm application. The entire closer and arm assembly are mounted below the frame stop, requiring a top rail clearance on the door of 5" (127mm), without using a drop plate. A 9388 drop plate requires a top rail clearance of just 2-5/8" (67mm).

Top Jamb
For efficiency reasons this application provides the best alternative to the regular arm application. There must be sufficient frame face and/or ceiling clearance for this application. It requires a top rail on the door of just 1-7/8" (48mm). This application provides the best door control for doors in exterior walls that swing out of a building. It will accommodate frame reveals to a maximum of 2-7/8" (73mm). The entire door closer and arm assembly project from the frame, similar to the regular arm application, where matters of appearance can be of concern.

Features:

Aluminum Alloy Housing
Closer bodies are constructed of a special aluminum alloy, carefully selected to
accommodate interactive steel components and operating conditions.

Rack & Pinion Operation
Provides a smooth constant control of the door through its full opening and closing cycle. 180° door swing can be achieved when door, frame, hardware and arm function do not interfere.

Non-Handed
Pinion shaft extends vertically through the closer body in both directions. This permits the closer to be positioned on either right or left-hand doors for most applications.

Non-Critical Control Valves
All control valves for sweep speed, latch speed and backcheck cushioning are noncritical and are adjusted by a standard 1/8" (3mm) hex wrench.

Adjustable Backcheck Cushion Valve
Provides control of the door in the opening cycle, beginning at approximately 75° of
door opening. It slows/cushions the door opening, when the door is forcibly opened
beyond its pre-adjusted speed limitation.

Finishes
All door closers are painted in waterborne acrylics. All steel parts, mounting plates and brackets are powder coated. The closers will withstand 120 hours of salt spray. ANSI requires 25 hours.

Adjust Power Shoe
Supplied as standard for a 15% (±7-1/2%) power adjustment by relocating the
forearm at the shoe, for regular arm and top jamb non-hold open installations.

Model: Norton 9303BCH x 9328H 689