E-Z GATE OPENER UL325 SERIES - 502 - Installation Manual - Mighty Mule

Nov 4, 2026

Uploaded by Theodore

Installation instructions for the Mighty Mule E-Z Gate Opener (UL325 series) describing a dual gate system and use with vehicular swing gates. Covers safety and compliance with UL 325, including warnings about high-force operation, staying clear of the unit, and adhering to installation and safety directions to prevent hazards from improper assembly. Defines vehicular gate opener class categories I–IV (residential to restricted access). Includes a units and standards conversion chart, records section for serial number and purchase details, and a structured table of contents for installation steps and specifications.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages44

Reading Time1 h 51 min

AccessFree to download

PLEASE READ THIS FIRST!

Important Safety Instructions

Disconnecting the Opener

Important Safety Instructions for the Consumer

Secondary Means of Protection Against Entrapment

Required Safety Precautions for Gates

Warning Signs and Labels

Installation

Parts List

Technical Specifications

Installation Overview

Installation of the Mounting Hardware

Mounting the First Opener

Installing the Second Opener

Installation Manual for the ® 502 E-Z GATE OPENER UL325 SERIES gate only. . DUAL GATE SYSTEM WARNING! This equipment is similar to other gate or door equipment and meets or exceeds Underwriters Laboratory Standard 325 (UL 325). However, gate equipment has hazards associated with its use and therefore by installing this product the installer and user accept full responsibility for following and noting the installation and safety instructions. Failure to follow installation and safety instructions can result in hazards developing due to improper assembly. You agree to properly install this product and that if you fail to do so Gates That Open, LLC shall in no event be liable for direct, indirect, incidental, special or consequential damages or loss of profits whether based in contract tort or any other legal theory during the course of the warranty or at any time thereafter. The installer and/or user agree to assume responsibility for all liability and use of this product releasing GTO from any and all liability. If you are not in agreement with this disclaimer or do not feel capable of properly following all installation and safety instructions you may return this product for full replacement value. READ ALL INSTRUCTIONS CAREFULLY AND COMPLETELY before attempting to install and use this automatic gate opener. This gate opener produces a high level of force. Stay clear of the unit while it is operating and exercise caution at all times. All automatic gate openers are intended for use on vehicular gates only. This product meets and exceeds the requirements of UL 325, the standard which regulates gate opener safety, as established and made effective March 1, 2000, by Underwriters Laboratories Inc. For more information on Mighty Mule’s full [line of automatic gate openers and access controls visit our website at www.mightymule.com](line of automatic gate openers and access controls visit our website at www.mightymule.com) R502IN ST ©2007 Gates That Open, LLC rev-09/18/13 Printed in China for GTO The Mighty Mule® Gate Opener is intended for use with vehicular swing gates. The opener can be used in Class I, Class II, Class III and Class IV applications. VEHICULAR GATE OPENER CLASS CATEGORIES Residential Vehicular Gate Opener-Class I: A vehicular gate opener (or system) intended for use in a home of one-to-four single family dwelling, or a garage or parking area associated therewith. Commercial/General Access Vehicular Gate Opener-Class II: A vehicular gate opener (or system) intended for use in a commercial location or building such as a multifamily housing unit (five or more single family units), hotel, garages, retail store, or other building servicing the general public. Industrial/Limited Access Vehicular Gate Opener–Class III: A vehicular gate opener (or system) intended for use in an industrial location or building such as a factory or loading dock area or other locations not intended to service the general public. Restricted Access Vehicular Gate Opener–Class IV: A vehicular gate opener (or system) intended for use ina guarded industrial location or building such as an airport security area or other restricted access locations not servicing the general public, in which unauthorized access is prevented via supervision by security personnel. | | Conversion Chart | | | | --- | --- | --- | --- | | Converting Metric Units to English Equivalents | | | | | When You Know Multiply By To Find | | | Symbol | | centimeters 0.3937 inches | | | in. (or ") | | meters 3.2808 feet | | | ft. (or ') | | kilograms 2.2046 pounds | | | lb. (or \#) | | Converting English Units to Metric Equivalents | | | | | When You Know Multiply By To Find | | | Symbol | | inches 2.5400 centimeters | | | cm | | feet 0.3048 meters | | | m | | pounds 0.4535 kilograms | | | kg | | Converting Temperature | | | | | deg. Celsius (ºC x 1.8) + 32 deg. Fahrenheit | | | ºF | | deg. Fahrenheit (ºF-32

FAQs

What safety precautions are emphasized before installing and using the automatic gate opener?

Read all instructions carefully and completely, expect a high level of force, stay clear of the unit while operating, and follow all installation and safety instructions to avoid hazards from improper assembly.

What is UL 325 and how does it relate to this gate opener?

The equipment meets and exceeds UL 325 requirements, a standard regulating gate opener safety established by Underwriters Laboratories, with the instructions reflecting compliance and safe installation responsibilities.

What are the different vehicular gate opener class categories and what do they indicate?

Class I targets residential one-to-four single family dwellings, Class II covers commercial/general access locations, Class III is for industrial/limited access sites, and Class IV is for restricted access guarded environments preventing unauthorized access.

Nov 4, 2026

Uploaded by Theodore