May be used in two different ways: as an OPEN only control (all LiftMaster operators) or as an OPEN/CLOSE control (only LiftMaster operators with types B2 and S2 control wiring).
In the latter case pulling the cord will open a fully closed door close a fully opened door and reverse a closing door.
Pulling the cord whlie the door is opening will either have no effect (type B2 wiring) or will stop the door (Solid State Logic Control Board).
This is installed onto the panel when the door is opened it is engaged and will keep the door open above the header so there is no hang down of the door.
The door will stay open above the header to eliminated the door being damaged.
This pressure sensitive air-wave edge can be adapted to suit a wide variety of applications.
When touch activated the MAW123 sends an immediate pulse of air through the extrusion to an air-wave switch which sends a signal to controls to stop and/or reverse operations.
It has been designed to fit most doors with double track bottom retainers.
With appropriate mounting channel this edge will fit nearly all doors from 11/2" to 2" thick.
The MAW123 is resistant to flame water and most common greases and oils.
Electromechanical road barrier system for control of road access.
24 Vdc gearmotor
Robust structure in steel new high strength balancing springs
guaranteed up to 1000000 opening and closing operations and elliptical
section bar with high wind-gust resistance.
Work cycle (cycles/hour): 350
Working temp. (°C Min/Max): -20 ÷ +50
Packing includes: Heater Aluminum Arm Rubber impact protection strip and sticker kit
Doors used with this operator should be balanced with the ability to be manually lifted by hand in an emergency or power outage.
The operators are typically mounted to the wall when used with smaller sectional overhead doors with a vertical or high lift and mounted to the wall or the front of the hood when used with rolling doors and grilles.
J operators are attached to the door jackshaft to indirectly drive the door
MyQ® Technology enables you to securely monitor and control your facility operator and lights with your smartphone tablet or computer for greater peace of mind.
Security+ 2.0® safeguards your facility – with every click a new code is sent to the commercial door operator so the door opens only for you
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.
The travel nut on LA500DC and LA500DCS gate operators may break when excessive force is applied to the gate such as being struck from a vehicle.
The travel nut can be identified as the white plastic nut that attaches to the internal lead screw of the arm.
The symptom of this problem is that the trolley assembly slides back and forth along the guide slots without mechanical restraint.
LiftMaster has created Trolley Service Kit K75-39337 with all the necessary parts and provides instructions on how to replace a damaged travel nut
within an LA500 arm
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.