Norton 7500 Closer

Overview

• Exceeds 10 million cycles (witnessed and verified by UL)
• Non-handed, rack-and-pinion design with cast aluminum body
• 2-3/16" (56mm) projection; 1-1/2" (38mm) diameter piston; 5/8" (16mm) diameter pinion journals
• Staked valves
• Standard, separate and independent, latch, sweep and backcheck intensity valves
• Backcheck positioning valve
• NorGlide® fluid
• Molded plastic cover
• All standard arm applications allow doors to swing 180°,
  conditions permitting
• Self-drilling screws
• Full-size template
• 25-year limited warranty
• Heavy-duty arms: Regular Rigid, Parallel Rigid, CloserPlus®, CloserPlus Spring™ and Unitrol®
• Slide Tracks: push or pull side mounting

Options

• Corrosion resistant model (non-hold open only)
• Specify 7500SS Metal cover. Specify M suffix
• Lead lined metal cover. Specify MLL suffix
• Enhanced backcheck. Specify EBC suffix
• Delayed action with pressure relief valve
• Retrofit plates

Compliance Standards

• ANSI/BHMA A156.4, Grade 1 certified
• UL listed
• UL10C compliant for positive pressure
• ADA Compliant (7500)

Caution

Door Closers for Low Opening Force Applications: Door closers installed in openings required to meet the requirements of the Americans with Disabilities Act or ANSI Standard A117.1, when adjusted
to meet those requirements, may not provide adequate closing power to dependably close and latch the door.

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: With few exceptions all series 7500 and 7700 door closers are non-handed and can be installed on either right or left hand swing doors. Pinion shaft extends vertically through the closer body in both directions. Some options will require that the hand of the closer be specified.

Sweep Speed Control Valve: Allows adjustment of door speed from the door's full open position down to approximately 10° from the closed position.

Latch Speed Control Value: Allows adjustment of door speed from approximately 10° down to the door’s fully closed position.

Tri-Style® Packing: 7500 comes with screws, brackets and soffit plates to allow for regular, top jamb, and parallel arm installations.

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 limits.

Adjustable Backcheck Position Valve: Allows the door opening position, where backcheck cushioning begins, to be adjusted to a greater door angle, up to a maximum of 20° farther (approximately 95°).

Standard Molded Cover: Molded of high-impact U.L. listed material and covers the entire closer body assembly. This cover is non-handed for
all applications.

Warranty: These closers carry a limited 25-year warranty against defect, and life of the building on the aluminum housing.

Closer Fluid: NorGlide® closer fluid is a specially formulated multi-viscosity hydraulic fluid that contains lubricity and anti-oxidation agents that provide optimum performance and efficiency. This fluid complements the interaction of the door closer's aluminum housing with its steel and brass components, while maintaining stable viscosity to allow the door closer to perform in temperatures ranging from extremely high to as low as -40° F.

Door Closer Power Options: Series 7700 Sized Door Closer – Available in five different power sizes (2, 3, 4, 5 or 6). Each power size is adjustable up to 50% stronger than the minimum closing force for that size, as outlined in ANSI/BHMA specification A156.4. Series 7500 Multi-Sized Door Closer – Adjustable through the entire power range of door closer sizes 1 through 6, as outlined in ANSI/BHMA standard A156.4. The series 7500 also conforms to the minimum opening force requirements of the Americans with Disabilities Act (A.D.A.) and ANSI/BHMA standard A117.1 for
interior doors.

Optional Features

Corrosion-Resistant Door Closer: The series 7500SS door closers with molded plastic cover are available for use where corrosive conditions exist. This series is provided with brass adjustment valves, a 440 grade stainless steel pinion shaft, an all-aluminum body and bronze closer arm bushings; all other components are of 302/303 grade stainless steel. Fasteners are 8-18 stainless steel. This product is available for standard regular arm, top jamb and parallel arm, non-hold open, applications only.

Optional Metal Cover: This steel cover is non-handed for regular and parallel arm applications, but is handed for top jamb applications. Cover is available in sprayed or architectural plated finishes.

Security Cover: Supplied standard with all series 7570/7770 door closers. This deep drawn steel cover is handed for all applications. The cover is fastened to the closer body at two points on top and to the door closer body stand-offs at two points on the bottom.

Optional ABS Cover: Consult Penner for details.

Enhanced Backcheck: This feature provides adjustable backcheck intensity beginning at approximately 15 degrees of the door opening cycle. It is intended for use in situations where the standard backcheck beginning at approximately 75° of door opening allows too much unrestricted door travel to obtain control of the door without the fear of peripheral damage
to the door closer, door, frame, hinges or pivots; or adjacent walls or structures. This feature is most frequently used in schools and detention facilities. Specify suffix EBC.

Adjustable Delayed Action Closing: An optional hydraulic feature that adds a third speed range to the closing cycle. This feature becomes effective when the door is opened and released at any point beyond 70°. The amount of time delay depends upon the combination of the angle of door release and valve adjustment. The valve can be adjusted with a 1/8" (3mm) hex key from no delay time up to maximum delay times of:

Non-Hold Open: Self-closes door every time door is opened. Auxiliary stop (by others) required except when using the CloserPlus®, CloserPlus Spring™ or Unitrol® arms.

Hold Open: Achieved by means of friction or ball and detent/roller. Friction hold open has a range of 90° to 180° using template location and mechanical adjustment. Ball and detent or roller hold open is effective in a range of 85° to 110°. Hold open arm door closers are not permitted to be used on fire door assemblies.

7700 Special Function Door Closers

Telephone Booth Operation: Closer holds the door to the telephone booth open at 5° from the closed position. This prevents the light switch from being activated and allows the booth to be ventilated. It also indicates to users that the booth is unoccupied. Available in size 2 only for regular arm or top jamb application only.

Coupon Booth Hold Open: Most commonly used on doors to safe deposit box inspection cubicles. Closer holds the door to the booth open at 15° to indicate that the booth is available for use by a safe-deposit-box renter. When the door is opened beyond 70°, the closer will close the door and engage the lock, providing the occupant with the desired privacy. Available in sizes 2 and 3 only for regular arm, top jamb or parallel arm
application. Specify hand.

Hospital Hold Open: Closer will hold door open at approximately 15° for ventilation, 45° for observation and beyond 90° for full access. Closer is supplied with a standard hold open arm for the beyond 90° hold open position. Available in sizes 3 and 4 only for regular arm, top jamb or parallel arm application. Specify hand.