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
Standard features include: N-4/12 12" x 10" x 6" panel B-2 C-2 D1 E2 T TS Mid-stop control functions Time delay on reverse On-board radio receiver hinged cover backplate primary fuses in panel
If PBS on cover required an additional charge will apply
If panel not ordered with an operator an additional charge will apply
Manufactured to the highest quality standards to ensure accurate detection our Pre-formed loops come with a 50 foot twisted lead-in ware and available lead-in lengths up to 500 feet.
Ideal for use on existing asphalt or concrete surfaces
Features a non spliced continuous wire throughout loop turns and lead-in.
requires the use of loop sealer when being installed to ensure long lasting trouble-free detection
Suspended from the ceiling the operators are used on sectional overhead doors with standard lift.
T operators are directly attached to drive and control 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.
Universal Keyless Entry works with garage doors made by LiftMaster Genie Stanley Overhead Door Wayne-Dalton Craftsman Chamberlain and Linear/Moor-o-Matic.
Single manufacturer/single frequency design – you pick the manufacturer and frequency for the garage door you want to open
Wireless – powered by one 9V battery (included)
Weatherproof slide-up protective cover
Open or close the garage door without using a remote
Like the model R-831-P it has three isolated contacts to open close and stop the doors and a possibility of 6 561 operational codes to enhance the security level. If your operator can be controlled by three button station then our R-831-J receiver and commercial remote controls will work with your operator.
It has three isolated contacts to open close or stop the door. If your operator can be controlled by three button station then our R-831-P receiver and commercial remote controls will work with your operator.