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Norton 7245MPO-24V-689 Support Unit Connected Free Swing Arm Electromechanical Closer/Holder Releasing Device

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The 7245MPO Electromechanical Closer/Holders combine the functions of an electromechanical door holder with the 7700 series door closer. Selective Hold Open (Standard): 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° (the exception is series 7250 which opens to 110º). Factory set at 80°, but is adjustable to virtually any degree of door opening desired. 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.

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Product Description


• Controlled remotely by area/ceiling detectors
• Surface mounted to the pull (hinge) side frame face
• Slide track mounts directly to door
• Minimum 4" ceiling clearance required
• 1/8" (3mm) – maximum frame reveal
• Standard units accommodate doors opening 180°; maximum 175° hold open (110º maximum for 7250 series).
• Buffer block assembly in the track will accommodate doors opening to 125°
• Auxiliary door stop is required for doors opening beyond 125°
• 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.
• Units shipped Selective Hold Open; Infinite Hold Open can be set in the field.
• Fail Safe – solenoid will de-energize in the event of power failure
• Accommodates either concealed or surface wiring
• Finish: Aluminum 689

Additional Information

Additional Information

Manufacturer Norton Door Controls
Model 7245MPO-24V-689
Application Shorter in length than the Master and Slave Units, the Support Unit contains a “Hook-Up Board” to receive power input and a door closer assembly with internal electrohydraulic holder capability. This unit is intended to control single doors or a pair of doors where the building's alarm system monitors the power to the Support Unit.
Size ANSI Size 5
Mounting Hinge Pull Side
Hand Handed
Input Voltage .070@ 24VAC/DC
U.L. Listed UL Listed
ANSI/BHMA ANSI/BHMA A156.15 certified
Warranty 2 Year Warranty
Weight 15.0000


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