LiftMaster SL3000UL SL3000UL Manual - Page 12
Safety Catch Rollers and Gate Rail Stops, DO NOT use a, Gate Catch Post.
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s a f et y c at c h ro l l er s an d g ate rai l Stop s Safety Catch Rollers DO NOT use a Gate Catch Post. Because the coasting distance may vary due to changes in temperature, it is NOT recommended to install a stop or catch post in front of the gates path. To do so will cause the gate to hit the post in certain instances. Closing Gate Closing Gate It is only recommended installing catch rollers with safety covers on the side of a post or wall with a minimal distance of half an inch between the rollers and gate. 1/2" 1/2" Gate Rail Stop When fully opened, the end of the sliding gate should stop at least five inches from an obstructing wall. 5" End View of Gate and Wall Note: For safety reasons, physical stops MUST be installed on both ends of the gate rail prior to installation of the gate operator. This will assure that the gate does not derail while opening or closing fully. 10