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
Answer the gate intercom and open the gate from anywhere in the world
● 1-way video 2-ways audio communication with visitor
● Simultaneously calls up to 4 devices
● Use your smartphone phone as virtual key
● Connect to the intercom directly through your phone’s Wi-Fi enter the passcode for home hub Wi-Fi and the device is connected
● View the gate/door and open any time with monitoring
mode
● Latching outputs for hold open
● Upgraded camera with IR cut filter for better color by day and IR night vision by night
● Store images of the last 32 missed callers on your phone
● Connects to your local internet router via WiFi or Ethernet
● Compatible with most wireless range extenders and wireless bridges for long distance applications
● No monthly fees
Entry codes: 1200
Ethernet Range: 328 ft
Wifi Range: 197 ft (subject to Wifi router range and environmental conditions)
1 HP208V 3 PH Industrial Continuous Duty Jackshaft Operator
Ideal for Sectional Doors Rolling Steel
Monitored logic board with integral 372Mhz radio receiver that can hold up to 20 transmitters (MK-00647/ MK-00653/ MK-00659) or 200 of the 1 channel hand held transmitters (MK-00660).
N-1 Through-beam (MK-00649) photocells included. Other options available.
3-btn o/s/c (02-103) wall control station included