FEATURES
Multi-Size Power: The closer spring assembly can be
adjusted through a wide power range. A high shouldered adjustment nut accepts a standard
11/16" socket or wrench.
Two Power Ranges: Each series can be adjusted
through a range of sizes: Series 7500 Normal Power Range Closer, sizes 2 thru 6;
Series 7500BF A.D.A. Accessibility Code Closer, sizes 1
thru 4.
Tri-Style Installation: Versatile closer packaged
with mounting hardware for regular arm and parallel arm installation. Closer can also be
installed top jamb where frame face and reveal permit. Top jamb installation requires a
minimum frame face of 3-1/4" (83 mm): arm will accommodate frame reveals of 0-3"
(0-76 mm). See page 7500-7 for more details.
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 all applications. Some options, as noted on page 7500-2, will
require that the hand of the closer be specified.
Aluminum Alloy Shell: Series 7500 closer bodies are
constructed of a special aluminum alloy, carefully selected to accommodate individual
closer characteristics and operating conditions.
Rack & Pinion Operation: Provides a smooth
transmission of power for control of the door through its full opening and closing cycle.
Adjustable Sweep Speed: An independent regulating
valve, hex-key operated, permits adjustment of the general closing speed.
Adjustable Latch Speed: An independent regulating
valve, hex-key-operated, permits adjustment of the door's speed for approximately the last
5° of the closing cycle.
Adjustable Backcheck Cushioning: An independent
regulating valve, hex-key operated, provides an adjustable hydraulic cushion to the door
opening speed toward the end of the opening cycle.
Adjustable Backcheck Positioning: An independent
valve, hex-key-operated, allows adjustment of the point, in the door's opening cycle, at
which backcheck cushioning takes effect. It provides a range of 20° within which
backcheck can be set. The exact range is dependent upon the arm application and templated
position of the closer.
Non-Critical Valves: All control valves for sweep
speed/latch speed, backcheck controls and optional delayed action are non-critical and are
adjusted by a standard 1/8" hex-key.
Narrow Profile Arm: Series 7580 closers are supplied
with a narrow profile arm for non-hold-open installations. It permits regular arm
installation where the minimum ceiling clearance is 1" (25 mm) and the reveal does
not exceed 1/8" (3 mm): it can be installed top jamb with a drop plate where the
minimum top rail of the door is 3-5/8" (92 mm) and the frame reveal does not exceed
3" (76 mm): or it can be mounted parallel arm to raise the closer body 1/2"
(13mm) higher on the top rail of the door than the standard 7500 Series closers will
permit. Order Series 7580.
Non-Hold-Open Arm: Standard closer will be supplied
with a Non-Hold-Open arm. This arm is non-handed.
Adjusta-Power Shoe: Supplied as standard for a 15%
(±7-1/2%) power adjustment by relocating the forearm at the shoe, for all regular arm and
top jamb non-hold-open closers, only.
Hold-Open Arm: Closer has adjustable hold-open
feature (90° to 180°). This arm is nonhanded. Order by suffixing "H" to the
Catalog Number.
Parallel Rigid Arm: Closer supplied with a
heavy-duty rigid forearm for applications where heavy traffic, and heavy use are
anticipated. Order by prefixing "PR" to the Catalog Number. |
