his is a replacement Brake Release Arm. For use with various LiftMaster® Commercial Door Operators. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility.
Gearhead style commercial door operators employ lubricated gears for heavy industrial high cycle applications.
GH-style operators include a floor level chain hoist to ease manual operation in an emergency or power outage.
Hoist wheel is easily moved to Right or Left hand side of unit eliminating the need to order right or left hand mounting.
MyQ Technology enables you to securely monitor and control your facility operator with your smartphone tablet or computer. Internet Gateway 828LM required.
Security +2.0 radio receiver safeguards your facility - with every click a new code is sent to the commercial door operator so the door opens only for you.
Timer-To-Close: Conveniently and confidently closes the commercial door automatically after a predetermined amount of time has elapsed for added security and peace of mind.
For use with various LiftMaster® and Chamberlain® DC Wi-Fi® Wall Mount Residential Jackshaft Garage Door Operators; powered by myQ® and manufactured 2023 to present
The unit will feature a yellow circle learn button
The direct drive operator consists of a DC electric motor directly coupled to a hollow shaft (30:1 reduction) worm gear reducer designed to install over keyed door shaft.
Continuous duty 0.5 HP 90 V DC 1750 rpm motor suitable for
110 to 240 V 1 PH and 60 Hz power supply.
Comes with integral absolute encoder to control the door travel
24 V 5 amps back-up battery pack and 3/8” ratchet socket to
accept and crank for manually operating the door in case of power failure
Programmable wall mountable UL325 compliant NEMA 4X control panel with LCD display and OPEN-CLOSE-STOP buttons on cover
Motor and controller: Continuous duty rated DC Motor with controller producing a powerful soft start/soft stop output of 2000 Newtons of force to drive commercial sectional doors while reducing mechanical impacts that cause premature wear of door components
NEMA 4X rated controller case: ZAP Controllers and push buttons are NEMA 4X compliant as a standard
Wiring type: C2 (factory default) B2 failsafe is standard with the addition of approved photo eye.
Radio control and external receiver terminals: Terminal strip provided inside the controller to provide quick convenient connections for adding external radio control receivers from any desired manufacturer
For use with various LiftMaster® Belt Drive and Chain Drive Garage Door Openers featuring myQ® technology dual light lenses and are not equipped with a video camera; manufactured after 2021 only
This replacement kit is compatible with the following models: 84501 84501-267 84602