Installation Guide
ii MM371W / MM372W Installation Instructions MM371W / MM372W Installation Instructions iii
CAUTION
The gate will move freely and uncontrolled when the gate operator is removed from the gate.
ONLY disconnect the operator when the control box power switch is OFF and the gate is NOT moving.
BEFORE YOU BEGIN TO INSTALL YOUR AUTOMATIC GATE OPERATOR:
Read these instructions carefully to become familiar with all parts and installation steps.
The video is only designed as an overview of the installation procedure.
You must read the installation manual for detailed instructions
on gate operator safety and proper use of the gate operator.
Please Read This First!
Thank you for purchasing a Mighty Mule Gate Operator—
Nortek Security and Control's "do-it-yourself" automatic
gate operator! When correctly installed and properly used,
your Mighty Mule Gate Operator will give you many years
of reliable service. Please read the following information
to ensure you have the correct system for your particular
needs. If so, this manual and will enable you to properly
install your Mighty Mule Gate Operator.
The Mighty Mule Gate Operator is designed for installation
for single or dual gates. The gate(s) must not exceed 16
feet in length or weigh more than 550 pounds (please see
Technical Specications on page x). The Mighty Mule Gate
Operator can be used on vinyl, aluminum, chain link, farm
tube, and wrought iron gates.
Not rated for use on solid surface gates due to the
potential to damage the operator and/or injure someone.
The Mighty Mule Gate Operator accommodates extra
transmitters, digital keypads, solar panels, push buttons,
automatic gate locks, and other access control products.
These optional accessories (see the Mighty Mule Accessory
Catalog) are available at most stores. Your store should be
able to special order any accessory not in stock.
If your store cannot special order accessories, please call
the Mighty Mule Sales Department (800-543-4283).
The Mighty Mule Gate Operator features Dual Sense
Technology™. This feature makes the gate stop and
reverse direction when it comes in contact with an
obstruction.
The Mighty Mule Gate Operator also has an adjustable
auto-close feature. After the gate reaches the fully open
position, it can be set to remain open up to 120 seconds
before automatically closing. Pressing the transmitter
button at any time after the gate opens fully will cause it
to close immediately. OFF is the factory setting; meaning
the gate will stay open until you press the transmitter (or
keypad, etc.) again.
Visit www.mightymule.com for a retailer near you.
Clevis Pin
Hairpin Clip
Gate Bracket
Front Mount
Because automatic gate operators produce high levels
of force, consumers need to know the potential hazards
associated with improperly designed, installed, and
maintained automated gate operator systems. Keep in
mind that the gate operator is just one component of
the total gate operating system. Each component must
work in unison to provide the end user with convenience,
security, and safety.
This manual contains various safety precautions and
warnings for the installer and end user. Because there are
many possible applications of the gate operator, the safety
precautions and warnings contained in this manual cannot
Disconnecting the Operator
1. Turn control box power switch OFF.
2. Remove the hairpin clip and clevis pin.
3. Remove the operator’s front mount from the gate bracket.
The gate can be opened and closed manually when the operator
is disconnected.
be completely exhaustive in nature. It does, however,
provide an overview of the safe design, installation, and
use of this product. CAREFULLY READ AND FOLLOW ALL
SAFETY PRECAUTIONS, WARNINGS, AND INSTALLATION
INSTRUCTIONS TO ENSURE THE SAFE SYSTEM DESIGN,
INSTALLATION, AND USE OF THIS PRODUCT.
Warnings in this manual are identied with this
warning symbol. The symbol identies conditions that can
result in damage to the operator or its components, serious
injury, or death.
MANUALLY OPENING AND CLOSING GATE
Because Mighty Mule automatic gate operators are only part of the total gate operating system, it is the responsibility
of the installer and end user to ensure that the total system is safe for its intended use.
NOTE: Substitute a Pin Lock for the clevis pin on the front mount of
the gate operator to prevent theft of the operator from the gate (see
accessory pages in back of this book).
Important Safety Information
NOT FOR THE CONTAINMENT OF ANIMALS.
Part #: FM133