Norton 7245 MPS

7245 MPS Selective Hold Support Unit With Free-Swing Arm

• Arm driver connected to the closer pinion drives the pinion when the door is opened and the slide arm rotates
• When unit is energized the pinion and arm driver remain at the point where door was initially opened
• Arm is connected to the pinion but is free to pivot
• The door is free to open, close or be set at any degree of opening
• When there is a Fire/Smoke alarm or any power interruption, the hold open control valve is released, and door closes

• ANSI/BHMA A156.15 certified.
• Listed by Underwriters Laboratories for labeled fire doors.
• Manufactured in an ISO 9001 facility.

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 ful opening and closing cycle.

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 Valve
Allows adjustment of door speed from approximately 10° down to the door’s fully closed position.

Adjustable Backcheck Cushioning
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°).

Infinite Hold Open
The door will hold open at any degree of opening up to 175°, with a maximum allowable door opening of 180° (exception series 7250 at 110°).

Selective Hold Open
The door will hold open at any degree of opening beyond a pre-set hold open point, up to 175°, with a maximum allowable door opening of 180° (exception series 7250 at 110°). Factory set at 80°, but is adjustable to virtually any degree of door opening desired.

Fail Safe
In the event of a power failure, the solenoid will de-energize and the closer-holder will then operate as a normal door closer.

Wiring Option
All 7200 Series Electromechanical Closer-Holders will accommodate either concealed or surface wiring.

Free Swing Arm
The connected free swing arm assembly provides the convenient automatic closing fire door protection for health care facilities or other locations where it is desired to neutralize the effort required to open or close a door. With no spring force on the door during the normal operation, patients, the handicapped and/or staff find the door easy to open, close or leave ajar.