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 GTO, Inc. 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, Inc.
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.
3121 Hartsfield Road • Tallahassee, Florida, USA 32303
The Mighty Mule Gate Opener
Class II and Class III applications.
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 in a
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.
®
is intended for use with vehicular swing gates. The opener can be used in Class I,
Please record the product serial number (located on the control box cover), and the date
and place of purchase in the spaces provided below. Refer to this information when
calling GTO for service or assistance with your automatic gate opener.
Serial Number ____________________ Date of Purchase ____________________
Place of Purchase ____________________
Remember to keep all receipts for proof of purchase.
Table of Contents
Gate Opener Class Categories ---------------------------------------------- inside cover
Units and Standards Conversion Chart ------------------------------------inside cover
PLEASE READ THIS FIRST! ------------------------------------------------- page iii
Important Safety Instructions -------------------------------------------------- page 1
Disconnecting the Opener ---------------------------------------------------- page 1
KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE
Important Safety Instructions for the Consumer --------------------------- page 2
Secondary Means of Protection Against Entrapment --------------------- page 4
Required Safety Precautions for Gates -------------------------------------- page 5
Warning Signs and Labels ---------------------------------------------------- page 6
Parts List ------------------------------------------------------------------------ page 8
Technical Specifications ------------------------------------------------------ page 10
Installation Overview --------------------------------------------------------- page 11
Installation of the Mounting Hardware ------------------------------------- page 12
Determining the Mounting Position ----------------------------------------- page 13
Indstalling the Post Bracket Assembly -------------------------------------- page 15
Mounting the Opener ---------------------------------------------------------- page 16
Installation of the Positive Stops --------------------------------------------- page 17
Mounting the Control Box ------------------------------------------------------ page 19
Connecting the Opener Power Cables to the Control Board------------- page 20
Mounting the Receiver ----------------------------------------------------------- page 21
4 1/2" x 4 1/2" Setback Template ---------------------------------------------- insert
®
E-Z GATE OPENER
PLEASE READ THIS FIRST!
Thank you for purchasing a Mighty Mule Gate Opener®—GTO's "do-it-yourself" automatic gate opener! When
correctly installed and properly used, your Mighty Mule Gate Opener® will give you many years of reliable service.
Please read the following information and watch the enclosed videotape to ensure you have the correct system for your
particular needs. Furthermore, this manual and the videotape will enable you to properly install your Mighty Mule
Gate Opener®.
The Mighty Mule Gate Opener® is designed for installation on a pull-to-open dual leaf gate (gates that open into the
property). Using an accessory kit, the Mighty Mule Gate Opener® can accommodate a push-to-opendual leaf gate
(gates that open out from the property). The gate must not exceed 16 feet in length nor weigh more than 350 pounds
(please see Technical Specifications on page 10). The Mighty Mule Gate Opener® can be used on vinyl, aluminum,
chain link, farm tube, and wrought iron gates. Use on solid (wood) gates is not recommended. Solid surface gates
have a high resistance to the wind; if the wind is strong enough, the opener will obstruct and stop.
The Mighty Mule Gate Opener® accommodates extra transmitters, digital keypads, solar panels, push buttons,
automatic gate locks, and other access control products. These optional accessories (see the enclosed Mighty MuleAccessory 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 GTO Sales Department.
The Mighty Mule Gate Opener® features adjustable obstruction sensing. This safety feature makes the gate stop
and reverse direction for 2 seconds when it comes in contact with an obstruction. MIN is the factory setting; meaning
the gate will exert the minimum force on an obstruction before it stops and reverses direction.
The Mighty Mule Gate Opener® also has an adjustable auto-close feature. After the gate reaches the fully open
position, it can be set to remain open for 1 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.
PLEASE NOTE—If your application requires any of the following:
Swing gates longer than 16 feet or weighing more than 350 pounds;
Slide gates;
Heavy duty or commercial uses;
Professional installation;
please call GTO at (800) 543-GATE [4283] or (850) 575-0176 for information about our GTO/PRO professional line
of gate openers and accessories. Our Sales Department will be glad to give you the name and phone number of a
GTO/PRO dealer near you.
BEFORE YOU BEGIN TO INSTALL YOUR AUTOMATIC GATE OPENER:
watch the enclosed videotape and read these instructions carefully and completely
to become familiar with all parts and installation steps.
iii
IMPORTANT SAFETY INSTRUCTIONS
Clevis Pin
Hairpin Clip
Washer
Gate Bracket
Front Mount
Because automatic gate openers produce high levels of force, consumers need to know the potential hazards associated with
improperly designed, installed, and maintained gate opener systems. Keep in mind that the gate opener is just onecomponent of the total gate operating system. Each component must work in unison to provide the consumer with
convenience, security, and safety.
This manual contains various safety precautions and warnings for the consumer. Because there are many possible
applications of the gate opener, the safety precautions and warnings contained in this manual cannot be completely
exhaustive in nature. They do, 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.
Precautions and warnings in this manual are identified with this warning symbol. The symbol identifies conditions that
can result in damage to the opener or its components, serious injury, or death.
Because GTO automatic gate openers are only part of the total gate operating system, it is the responsibility of the
consumer to ensure that the total system is safe for its intended use.
To Manually Open and Close
the Gate, Follow the Procedure
Below:
Disconnecting the Openers
1.Turn control box power switch OFF.
2.Remove hairpin clip, clevis pin, and washer from
front mount.
3.Pull front mount away from gate bracket.
Repeat steps 1 – 3 for the second opener
Your dual gate can be opened and closed manually
when the openers are disconnected.
NOTE: Substitute Pin Locks for the clevis
pins to prevent unauthorized removal of the
openers from the gate (see Accessory
catalog).
CAUTION: Disconnect the
openers ONLY when the control
box power switch is OFF and
the gate is NOT moving.
1
IMPORTANT SAFETY INSTRUCTIONS
For The Consumer
WARNING: To reduce the risk of injury or death:
1.READ AND FOLLOW ALL INSTRUCTIONS. Failure to meet the requirements set forth in the instruction
manual could cause severe injury and/or death, for which the manufacturer cannot be held responsible.
2.When designing a system that will be entered from a highway or main thoroughfare, make sure the system is placed
far enough from the road to prevent traffic congestion.
3.The gate must be installed in a location that provides adequate clearance between it and adjacent structures when
opening and closing to reduce the risk of entrapment. Swinging gates must not open into public access areas.
4.The gate and gate opener installation must comply with any applicable local codes.
I. Before Installation
1.Verify this opener is proper for the type and size of gate, its frequency of use and the proper class rating.
2.Make sure the gate has been properly installed and swings freely in both directions. Repair or replace all worn or
damaged gate hardware prior to installation. A freely moving gate will require less force to operate and will
enhance the performance of the opener and safety devices used with the system.
3.Review the operation of the system to become familiar with its safety features. Understand how to disconnect the
opener for manual gate operation (see page 1).
4.This gate opener is intended for vehicular gates ONLY. A separate entrance or gate must be installed for pedestrian
use (see page 6).
5.Always keep people and objects away from the gate and its area of travel. NO ONE SHOULD CROSS THE
PATH OF A MOVING GATE.
6.Pay close attention to the diagram below and be aware of these areas at all times.
ZONE 1
ZONE 2
ZONE 5
ZONE 3
ZONE 3
ZONE 2
ZONE 5
ZONE 4
Gate in the
Open Position
Driveway
2
ZONE 4
Gate in the
Open Position
IMPORTANT SAFETY INSTRUCTIONS
Entrapment Zones:
Zone 1 – leading edge of the gate and the fence post.
Zone 2 – between the gate and the gate post
Zone 3 – the path of the gate
Zone 4 – the space between the gate in the open position and any object such as a wall, fence, tree, etc.
Zone 5 – pinch points between the opener and gate or post
II. During Installation
1.Install the gate opener on the inside of the property and fence line. DO NOT install an opener on the outside of the
gate where the public has access to it.
2.Be careful with moving parts and avoid close proximity to areas where fingers or hands could be pinched.
3.Devices such as safety edges and photo beams provide additional protection against entrapment (see page 5).
4.If push buttons or key switches are installed, they should be within sight of the gate, yet located at least 10 feet from
any moving part of the gate (see diagram below). Never install any control device where a user will be tempted to
reach through the gate to activate the gate opener.
5.Do not activate your gate opener unless you can see it and can determine that its area of travel is clear of people,
pets, or other obstructions. Watch the gate through its entire movement.
6.Secure outdoor or easily accessed gate opener controls in order to prohibit unauthorized use of the gate.
10'10'
10'10'
Moving Gate
Area
Driveway
Moving Gate
Area
NEVER INSTALL
any control device
within gray area
3
10'10'
IMPORTANT SAFETY INSTRUCTIONS
III. After Installation
1.Attach the warning signs (included) to each side of the gate to alert the public of automatic gate operation. It is
your responsibility to post warning signs on both sides of your gate. If any of these signs or warning decals become
damaged, illegible or missing, replace them immediately. Contact GTO for free replacements.
2.The gate is automatic and could move at any time, posing a serious risk of entrapment. No one should be in contact
with the gate when it is moving or stationary.
3.Do not attempt to drive into the gate area while the gate is moving; wait until the gate comes to a complete stop.
4.Do not attempt to "beat the gate" while the gate is closing. This is extremely dangerous.
5.Do not allow children or pets near your gate. Never let children operate or play with gate controls. Keep the
remote controls away from children and unauthorized users; store controls where children and unauthorized users do
not have access to them.
6.KEEP GATES PROPERLY MAINTAINED. Always turn power to opener OFF before preforming any
maintenance. Clean the push-pull tube with a soft, dry cloth and apply silicone spray to it at least once per month.
7.Service the gate and gate opener regularly. Grease hinges, spray push pull tube with high quality silicon spray and
replace the battery every two (2) years.
8.To operate this equipment safely, YOU must know how to disconnect the opener for manual gate operation
(see page 1). If you have read the instructions and still do not understand how to disconnect the opener, contact the
GTO Service Department.
9.Disconnect the opener ONLY when the power is TURNED OFF and the gate is NOT moving.
10.Make arrangements with local fire and law enforcement for emergency access.
11.Distribute and discuss copies of the IMPORTANT SAFETY INSTRUCTIONS section of this manual with all
persons authorized to use your gate.
12.IMPORTANT: Save these safety instructions. Make sure everyone who is
using or will be around the gate and gate opener are aware of the dangers
associated with automated gates. In the event you sell the property with the
gate opener or sell the gate opener, provide a copy of these safety instructions
to the new owner.
Should you lose or misplace this manual, a copy can be obtained by
downloading one from the Mighty Mule web site (www.mightymule.com), by
contacting GTO, Inc., at 3121 Hartsfield Road, Tallahassee, Florida 32303 or
by calling 1-800-543-4283 and requesting a duplicate copy. One will be
provided to you free of charge.
4
IMPORTANT SAFETY INSTRUCTIONS
Secondary Means of Protection Against
Entrapment
As specified by Gate Operator Safety Standard, UL 325 (30A.1.1), automatic gate openers shall have provisions for, or be
supplied with, at least one independent primary and one independent secondary means to protect against entrapment. The
Mighty Mule utilizes Type A, an inherent (i.e., built-in) entrapment sensing system as the primary type of entrapment
protection. Also, the Mighty Mule has provisions for the connection of Type B2 protection to be used as the secondary type
of entrapment protection, if desired.
1. For gate operators utilizing a contact sensor (e.g., safety edge sensor– Type B2) in accordance with UL 325 (51.8.4 [i]):
A. One or more contact sensors shall be located at the leading edge, bottom edge, and post edge, both inside and
outside of a vehicular swing gate system.
B. A hard wired contact sensor shall be located and its wiring arranged so that the communication between the
sensor and the gate opener is not subjected to mechanical damage.
C. A wireless contact sensor such as one that transmits radio frequency (RF) signals to the gate opener for
entrapment protection functions shall be located where the transmission of the signals are not obstructed or
impeded by building structures, natural landscaping or similar obstruction. A wireless contact sensor shall
function under the intended end-use conditions.
Leading Edge Contact Sensor
on both sides of the gate
Vehicular GateVehicular Gate
Post Edge Contact Sensor
on both sides of the gate
Bottom Edge Contact Sensor
on both sides of the gate
Post Edge Contact Sensor
on both sides of the gate
ENTRAPMENT ALARM (UL 325; 30A.1.1A)
The Mighty Mule Gate Opener® is designed to stop and reverse approximately 2 seconds when the gate comes in
contact with an obstruction or when an object activates the non-contact sensors. Additionally, these openers are
equipped with an audio entrapment alarm which will activate if the unit obstructs twice while opening or closing.
This alarm will sound for a period of 5 minutes, or until the opener receives an intended signal (e.g., from a
transmitter) and the gate returns to a fully open or fully closed position.
5
IMPORTANT SAFETY INSTRUCTIONS
Required Safety Precautions for Dual Gates
Install Warning Signs
Warning signs alert people of automatic gate operation and are recommended when installing the Mighty Mule Gate
®
Opener
recommend using the GTO Bulldog Pedestrian Gate Lock (Call the GTO Sales Department) for controlled access.
. Furthermore, a walk-through gate must be installed if pedestrian traffic is expected near the vehicular gate. We
Bulldog Pedestrian
Gate Lock
(recommended, not included
Pedestrian Gate
)
Contact Sensor
(
recommended, not included
)
Warning SignWarning Sign
Vehicular GateVehicular Gate
Contact Sensor
(
recommended, not included
)
Contact Sensor
(
recommended, not included
)
Contact Sensor
(
recommended, not included
)
Entrapment Protection
Inherent obstruction settings, even when properly adjusted, may not be sensitive enough to prevent bodily injury in some
circumstances. For this reason, safety devices such as safety edge sensors (or photoelectric sensors), which stop and reverse
gate direction upon sensing an obstruction, are suggested for augmented protection against entrapment.
Warning Signs
The warning signs (at right) must
be installed on both sides of each
gate leaf (see page 7 for details).
!
WARNING
Moving Gate Can Cause
Injury Or Death
1. KEEP CLEAR! Gate may move at any time.
2. Do not allow children to operate gate or
play in gate area.
3. This gate is for vehicles only. Pedestrians
must use a separate entrance.
6
IMPORTANT SAFETY INSTRUCTIONS
These warning labels should be found at the locations specified below. If any of them are missing, immediately contact GTO
for replacements.
!
WARNING
!
WARNING
MOVING GATE
Can Cause Injury or Death
1. KEEP CLEAR! Gate may move at any time.
2. Do not allow children to operate gate or play in gate area.
3. This gate is for vehicles only. Pedestrians must use
separate entrance.
Moving Gate Can Cause
Injury Or Death
1. KEEP CLEAR! Gate may move at any time.
2. Do not allow children to operate gate or
play in gate area.
3. This gate is for vehicles only. Pedestrians
must use a separate entrance.
warning signs (4 enclosed) to be installed on both sides
of each gate leaf (3—5 feet above the bottom of the gate)
Conforms to UL 325 STANDARDS
Maximum Gate: 500 lb. (226.7 kg); 16 ft. (4.8 m)
USC
L
I
S
E
T
9901178
TO MANUALLY OPEN AND CLOSE THE GATE:
1. Turn control box power switch OFF.
2. Disconnect front mount from gate bracket.
3. Pull front mount away from gate bracket.
Voltage: 12 Vdc; Frequency: 0 Hz; Power: 41.4 W
D
Class I, II and III Vehicular Swing Gate Operator.
Serial Number: 1000-xxxxxxx
warning labels (4) installed on both sides
of each operator housing
Series
Disconnect operator ONLY when the control box power
switch is OFF and the gate is NOT moving.
GTO, Inc. Tallahassee, Florida USA
product identification and manual operation instruction label (1)
installed on control box cover
7
RB2000
Dual Gate Opener Parts List
Opener and Mounting Hardware
4 1/2" x 4 1/2"
Setback Template (1)
See Installation of the Post Bracket Assembly
pages 5 and 6 in the Installation Manual
Gate Bracket (2)
Strain Relief (1)
8" Nylon Cable Tie (20)
Post Bracket (4)
4 1/2' Power Cable (1)
Installation Video (1)
Post Pivot Bracket (2)
Hardware
Gate Opener (2)
E-Z GATE OPENER
Closed Position
Stop Plate (2)
®
40' Power Cable (1)
®
PENER
GATE O
E-Z
Customer Support Card (1)
3/8" x 8" Bolt (8)
3/8" x 3" Bolt (4)
3/8" x 2" Bolt (2)
5/16" x 1-3/4" Bolt (2)
3/8" x 1-1/8" Clevis Pin (4)
Hairpin Clip (4)
3/8" Washer (18)
3/8" Lock Washer (14)
5/16" Washer (2)
3/8" Nut (14)
5/16" Nut (2)
2" Receiver Mounting Screw (4)
8
Single Gate Opener Parts List (continued)
Control Box and Electrical Components
Tools Needed
• Power Drill
• Open End Wrenches — 3/8", 7/16", 1/2", and 9/16"
• 3/8" Drill Bit
• Hacksaw or Heavy Duty Bolt Cutters
• Slotted (Flat Bladed) Screwdriver
• Phillips Screwdriver
• Tape Measure
• Level
• Wire Strippers
• C-Clamps — small, medium, and large
ALSO, YOU WILL NEED THESE ITEMS BEFORE YOU BEGIN THE INSTALLATION (Some of these items can
be found in the Accessory Catalog on page 38):
•Additional low voltage wire will be needed; length depends upon the distance between the transformer power
supply and the control box. See Powering the System on page 26, and the Accessory Catalog.
•If your dual gate is more than 1000' away from an ac power source you will need to use at least two Mighty MuleSolar Panels to trickle charge the battery. See the Accessory Catalog.
•Depending on the type of gate, a horizontal cross memberor mounting plate may be needed to mount the front
of the opener and gate bracket to the gate. See page 11, step 2; page 15, step 10.
•If your fence posts are made of wood and are less than 6" in diameter or 6" square, see page 12.
•If you have thin walled tube or panel gates, see RecommendedReinforcement Examples on page 12.
•If your fence posts are larger than 6" in diameter you will need threaded rods or carriage bolts longer than 8".
See page 15.
•Both gate leaves need a stop post for the open position. These posts are not provided. See Installation of thePositiveStops on page 17 for more information.
9
Technical Specifications
MIGHTY MULE GATE OPENER
DRIVE
• Low friction screw drive (linear actuator) rated for –30 ºF to +200 ºF (–34 ºC to +93 ºC).
• Powered by a 12 V motor with integral case hardened steel gear reducer. Motor speed reduced to 220 rpm. Generates
330 ft. lb. of torque at 12 V.
• Opening arc: minimum 80º to maximum 110º. Approximate opening time (90º): 15 to 17 seconds, depending on weight
of gate.
POWER
• The system is powered by a 12 VDC, 7.0 Ah, sealed, rechargeable lead acid battery.
• Battery charge is maintained by a 120 VAC, 18 VAC output transformer rectified to 14.5 VDC (20 VA) through the
GTO control board. Two (2) blade-style control board fuses are rated for 15 A.
NOTE: The transformer should not be directly connected to any battery. Do not replace fuses
with higher ampere rated fuses; doing so will void your warranty and may damage your control board.
• Battery charge is maintained by GTO Solar Panel Charger: float voltage of 14.5 VDC output from a 19
silicon alloy panel. Generates 5 W at 300 mA. A gated diode on the control board prevents battery discharge.
CONTROL
• GTO microprocessor-based control board is set for pull-to-open gate installations. DIP switches can be adjusted to
accommodate an optional kit for push-to-open gates (see Accessory Catalog).
• Control board has temperature compensated circuits.
•A circuit on the control board regulates charging. "Sleep draw" is 40 mA; "active draw" is 2 to 5 A.
• Auto-memorization of digital transmitter code.
• GTO remote-mounted RF receiver tuned to 318 MHz.
• Limit controls are mechanical. Adjustable range of push-pull tube is 7
3
fully retracted is 33
/
4", mounting point to mounting point.
1
/
2" to 11
1
/
2". Opener length with push-pull tube
• Adjustable auto-close timer (OFF to 120 s), inertia, and obstruction sensitivity using three (3) potentiometers.
• Power terminal block accommodates a transformer and solar panels.
• DIP switches simplify setup of gate opener.
• Accessory terminal block fully compatible with push button controls, digital keypads, safety loops, etc.
• Control board allows connection of safety edge sensors and photoelectric sensors.
• Audio entrapment alarm sounds if unit encounters an obstruction twice while opening or closing.
3
/
8" x 8
1
/
2"
OPERATIONAL CAPACITY
• Depending upon the length of the gate leaves and the number of operational cycles per day, the Mighty Mule Gate
Opener® can open dual gates weighing up to 350 lb. per leaf—if all installation procedures have been
properly followed. Ball bearing hinges should be used on all gate leaves weighing over 250 lb.
Gate Capacity Chart
16 ft.
14 ft.
12 ft.
3.5-10 ft.
Gate Length
(per gate leaf)
135
145
155
165
50 lb.100 lb.150 lb.250 lb.350 lb.
(estimated number of cycles based on use with a transformer)
120
130
140
150
Gate Weight (per gate leaf)
105
115
125
135
NONE
85
95
105
NONE
NONE
60
70
NOTE: An operation cycle is one full opening and closing of the gate. The numbers shown in this chart are for single
gate applications, cycles for dual gate applications will be about half of those with a single gate.
To determine the number of cycles the gate opener will perform using solar panels, please see the specifications listed on
page 26 or call (800) 543-GATE [4283] or (850) 575-0176 for more information.
These specifications are subject to change without notice.
10
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