Installation Manual for the

Installation Manual for the
Installation Manual for the
®
E-Z GATE OPENER
®
E-Z GATE OPENER
502
UL325 SERIES
LI
502
STED
US
1-800-543-GATE (4283) • www.mightymule.com
!
WARNING
MOVING GATE
Can Cause Injury or Death
®
E-Z GATE OPENER
502
1-800-543-GATE (4283) • www.mightymule.com
!
WARNING
MOVING GATE
Can Cause Injury or Death
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 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.
2007 GTO, Inc.
©
rev - 09/24/07
Printed in China for GTO, Inc.
For more information on GTO/PRO’s full line of automatic gate openers and access controls visit our website at www.gtopro.com
R502INST
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.
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 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.
Conversion Chart
Converting Metric Units to English Equivalents
When You Know
Multiply By
To Find
Symbol
centimeters
meters
kilograms
0.3937
3.2808
2.2046
inches
feet
pounds
in. (or ")
ft. (or ')
lb. (or #)
Converting English Units to Metric Equivalents
When You Know
Multiply By
To Find
Symbol
inches
feet
pounds
2.5400
0.3048
0.4535
centimeters
meters
kilograms
cm
m
kg
Converting Temperature
deg. Celsius
deg. Fahrenheit
(ºC x 1.8) + 32 deg. Fahrenheit
(ºF-32) ÷ 1.8 deg. Celsius
ºF
ºC
FOR YOUR RECORDS
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
KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE
Disconnecting the Opener--------------------------------------------------------------page 1
Important Safety Instructions for the Consumer-------------------------------------page 2
Secondary Means of Protection Against Entrapment-------------------------------page 5
Required Safety Precautions for Gates------------------------------------------------page 6
Warning Signs and Labels--------------------------------------------------------------page 7
Installation --------------------------------------------------------------------------- page 8
Parts List----------------------------------------------------------------------------------page 8
Technical Specifications --------------------------------------------------------------page 10
Installation Overview ---------------------------------------------------------------- page 11
Installation of the Mounting Hardware-----------------------------------------------page 12
Mounting the First Opener-------------------------------------------------------------page 16
Installing the Second Opener-----------------------------------------------------------page 16
Installation of the Closed Position Stops---------------------------------------------page 17
Mounting the Control Box--------------------------------------------------------------page 19
Connecting the Opener Power Cables------------------------------------------------page 20
Powering the System --------------------------------------------------------------- page 21
Solar Chart--------------------------------------------------------------------------------page 21
Connecting the Transformer------------------------------------------------------------page 21
Control Board Settings -----------------------------------------------------------page 24
Obstruction Sensitivity------------------------------------------------------------------page 25
Main DIP Switches----------------------------------------------------------------------page 26
Dual Mode DIP Switches---------------------------------------------------------------page 27
Setting Closed Position Limits---------------------------------------------------------page 28
Setting Your Personal Transmitter Code -------------------------------------- page 27
Installing the Receiver ------------------------------------------------------------ page 28
Connecting Additional Safety Devices ----------------------------------------- page 29
Connecting Accessories ----------------------------------------------------------- page 31
Push to Open Installation --------------------------------------------------------- page 32
Setting Open Position Limits-----------------------------------------------------------page 33
Troubleshooting Guide ----------------------------------------------------------- page 35
Warranty and Repair Service ---------------------------------------------------page 37
Column Installation Information ----------------------------------------------- page 38
Accessory Catalog ----------------------------------------------------------------- page 39
®
E-Z GATE ®OPENERS
PLEASE READ THIS FIRST!
Thank you for purchasing a Mighty Mule® E-Z Gate® Opener—GTO's "do-it-yourself" automatic gate opener!
When correctly installed and properly used, your Mighty Mule® E-Z Gate® Opener will give you many years of
reliable service. Please read the following information and watch the enclosed video 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® E-Z Gate® Opener.
The Mighty Mule® E-Z Gate® Opener is designed for installation on a pull-to-open dual leaf gate (gates that open
into the property). By purchasing an accessory bracket, the Mighty Mule® E-Z Gate® Opener can accommodate a
push-to-open dual leaf gate (gates that open out from the property). The gate must not exceed 18 feet in length and
weigh more than 350 pounds per leaf or exceed 6 feet in length and weigh more than 850 pounds per leaf (please see
Technical Specifications on page 10). The Mighty Mule® E-Z 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® E-Z Gate® Opener accommodates extra transmitters, digital keypads, solar panels, push buttons,
automatic gate locks, and other access control products. These optional accessories (see accessory pages in the back
of this book) 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 (800-543-GATE).
The Mighty Mule® E-Z Gate® Opener features adjustable obstruction sensing. This safety feature makes the gate
stop and reverse direction within 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® E-Z Gate® Opener 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.
PLEASE NOTE—If your application requires any of the following:
Swing gates longer than 18 feet or weighing more than 850 pounds;
Slide gates;
Heavy duty or commercial uses;
Professional installation;
For additional support and for information about our GTO/PRO professional line of gate openers and accessories go
to www.gtopro.com or call GTO at (800) 543-GATE [4283] or (850) 575-0176. 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 video and read these instructions carefully and completely
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 opener safety and proper use of the gate opener.
iii
IMPORTANT SAFETY INSTRUCTIONS
Because automatic gate openers produce high levels of force, consumers need to know the potential hazards associated with
improperly designed, installed, and maintained automated gate opener systems. Keep in mind that the gate opener is just
one component 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:
CAUTION: The gate will move freely and uncontrolled when the gate opener is
removed from the gate. ONLY disconnect the opener when the control box power switch is OFF and the gate is NOT moving.
Front or Rear Mount
Disconnecting the Opener
1. Turn control box power switch OFF.
2. Remove hairpin clip, clevis pin, and bushing
from either the front or rear mounting point.
3. Remove the opener from the mount.
Clevis Pin
Gate Bracket
The gate can be opened and closed manually
when the opener is disconnected.
Bushing
Hairpin Clip
NOTE: Substitute a Pin Lock for the clevis pin on the front
mount of each gate opener to prevent unauthorized removal of
the opener from the gate (see Accessory Catalog). 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 dual opener is proper for the type and size of gate, its frequency of use and the proper class rating.
2.
Make sure the dual 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. (see page 11)
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 2
ZONE 5
ZONE 4
Gate in the 
Open Position
ZONE 3
ZONE 3
Driveway
Entrapment Zones for a
Pull-To-Open Application
2
ZONE 5
ZONE 4
Gate in the 
Open Position
IMPORTANT SAFETY INSTRUCTIONS
Entrapment Zones for a proper Pull-To-Open installation:
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.
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 contact sensors (safety edges) and non contact sensors (photo beams) provide additional protection
against entrapment.
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.
Pull-To-Open Application
10'
10'
10'
Moving Gate
Area
10'
Moving Gate
Area
Driveway
10'
NEVER INSTALL
any control device
within gray area
3
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 performing 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, and replace the battery every 2-3 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.
Disconnect the opener ONLY when the power is TURNED OFF and the gate is NOT moving.
9. 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 an inherent entrapment
sensing system, and shall have provisions for, or be supplied with, at least 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
500
Vehicular Gate
Post Edge Contact Sensor
on both sides of the gate
Vehicular 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® E-Z Gate® Opener is designed to stop and reverse within 2 seconds when the gate comes
in contact with an obstruction. 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 from a hard wired entry/exit source (e.g. push button
control or keypad) and the gate returns to a fully open or fully closed position. Turning the power switch on the
control box OFF and back ON will also deactivate the alarm. Wireless controls such as transmitters and wireless
keypads will not deactivate the alarm.
5
IMPORTANT SAFETY INSTRUCTIONS
Required Safety Precautions for Gates
Install Warning Signs
Warning signs alert people of automatic gate operation and are required when installing the Mighty Mule® E-Z Gate®
Opener. Furthermore, a walk-through gate must be installed if pedestrian traffic is expected near the vehicular gate. We
recommend using the GTO Bulldog Pedestrian Gate Lock (Call the GTO Sales Department at 1-800-543-4283) for
controlled access.
Bulldog Pedestrian
Gate Lock
(recommended, not included)
Contact Sensor
Warning Sign
Pedestrian Gate
(recommended, not included)
Vehicular Gate
Warning Sign
Vehicular Gate
Contact Sensor
Contact Sensor
(recommended, not included)
(recommended, not included)
Contact Sensor
(recommended, not included)
Entrapment Protection
GTO’s 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 enhanced protection against entrapment.
Warning Signs
! WARNING
The warning signs (at right) must
be installed on both sides of the
gates (see page 7 for details).
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.
DC SWING SERIES / 500
Conforms to UL 325 STANDARDS
Maximum Gate: 500 lb. (226.7 kg); 16 ft. (4.8 m)
US Voltage: 12 Vdc; Frequency: 0 Hz; Power: 25 W
C
LIS ED
T
Class I, II, III and IV Vehicular Swing Gate Operator.
#xxxxxxx
Serial Number: XXXXXXXXXX
TO MANUALLY OPEN AND CLOSE THE GATE:
1. Turn control box power switch OFF.
2. Disconnect front or rear mount from gate bracket.
3. Pull opener away from front or rear mount.
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 the right side of the control box.
Warning signs (2 enclosed) to be installed on each side
of the gate (3–5 feet above the bottom of the gate)
®
®
E-Z GATE OPENER
502
UL325 SERIES
Logo and warning labels (2) installed on each side of
opener housing
7
Dual Gate Opener Parts List
Opener and Mounting Hardware
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Dual Gate Opener Parts List (continued)
Control Box and Electrical Components
Battery (1)
Receiver (1)
GTO Transmitter(1)
! 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.
Warning Signs (4)
Transformer (1)
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
• Small (Flat Bladed) Screwdriver
• Phillips Screwdriver
Control Box (1)
• Tape Measure
• Level
• Wire Strippers
• C-Clamps — small, medium, and large
• Center Punch
• An extra person will be helpful
YOU MAY ALSO NEED THESE ITEMS BEFORE YOU BEGIN THE INSTALLATION
(Some of these items can be found in the Accessory Catalog page 39):
• Low voltage wire will be needed to run from the transformer to the control box; length depends upon the distance between
the transformer power supply and the control box. See Powering the System on page 21, and the Accessory Catalog.
• If your gate is more than 1000' away from an ac power source you will need to use at least 10 to 30 Watts of solar charging
power to trickle charge the battery. See the Accessory Catalog.
• If your fence post is made of wood and is less than 6" in diameter or 6" square, see page 12.
• If your fence post is larger than 6" in diameter you will need threaded rods or carriage bolts longer than 8". See page
15.
• PVC conduit.
• If you have thin walled tube or panel gates, see Recommended Reinforcement Examples on page 12.
• Depending on the type of gate, a horizontal cross member or 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.
• Surge protection for transformer.
• Some types of installations require U-Bolts.
• If the gate is a push-to-open refer to page 36
• Additional washer or a metal plate may be needeed for wooden post.
9
Technical Specifications
MIGHTY MULE® 502 E-Z GATE® OPENER
DRIVE
• Low friction screw drive (linear actuator) rated for -5 ºF to +160 ºF (-28 ºC to +71 ºC).
• Powered by a 12 V motor with integral case hardened steel gear reducer. Motor speed reduced to 260 rpm. Generates
680 ft. lb. of torque at 12 V.
• Maximum opening arc of 110º. Approximate opening time (90º): 20 seconds, depending on weight of gate.
POWER
• The system is powered by a 12 Vdc, 7.0 Ah, sealed, rechargeable 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. One (1) blade-style control board fuse rated for 25 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 193/8" x 81/2"
silicon alloy panel. Generates minimum of 5 W at 300 mA. A gated diode on the control board prevents battery discharge.
CONTROL
• GTO microprocessor-based control board is set for single leaf, 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.
• Opener length with push-pull tube fully retracted is 401/4", mounting point to mounting point.
• Adjustable auto-close timer and obstruction sensitivity.
• Power terminal bock accommodates a transformer or solar panels.
• DIP switches simplify setup of gate opener.
• Accessory terminal block is 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 the unit encounters an obstruction twice while opening or closing.
OPERATIONAL CAPACITY
• The Gate Capacity Chart shows approximate cycles, per day, you can expect from the Mighty Mule 502 Automatic
Gate Operator when powered with a transformer. Actual cycles may vary slightly depending upon the type and condition of gate and installation.
Mighty Mule 502 Gate Capacity /Cycle Chart
Estimated number of daily cycles, based on use with a transformer and one(1) 12 Volt battery.
Number of Cycles Per Day
IMPORTANT: BALL BEARING HINGES SHOULD
BE USED ON ALL GATES
WEIGHING OVER 250 Lbs.
Gate Weight
NOTE: "NR" indicates this
size and weight combination
is not recommended for the
Mighty Mule 502.
850 lbs.
750 lbs.
650 lbs.
550 lbs.
450 lbs.
350 lbs.
250 lbs.
150 lbs.
100 lbs.
50 lbs.
68
73
78
83
88
93
98
103
108
113
5’ - 6’
63
68
73
78
83
88
93
98
103
108
8’
NR
63
68
73
78
83
88
93
98
103
10’
Gate Length
NR
NR
63
68
73
78
83
88
93
98
12’
NR
NR
NR
63
68
73
78
83
88
93
14’
NR
NR
NR
NR
63
68
73
78
83
88
16’
NR
NR
NR
NR
NR
63
68
73
78
83
18’
NR = NOT RECOMMENDED
To determine the number of cycles the gate opener will perform using solar panels, please see the specifications
listed on page 21 or call (800) 543-1236 or (850) 575-4144 for more information.
* An operation cycle is one full opening and closing of the gate.
These specifications are subject to change without notice.
10
Installation Overview
Pull-to-Open Gates (Gate Opens into the Property)
The diagram shown below is an example of a pull-to-open installation on a chain link fence and dual gates. Mounting the
openers on a masonry column requires special procedures; see Column Installation Information on page 38 if you intend
to mount the openers on columns. Furthermore, if you have push-to-open gates, you will need to purchase two (2) pushto-open brackets (see Accessory Catalog) to properly configure your system. See Push to Open Installation on page 32
before proceeding.
Gate Swings Evenly and Freely
Hung Firmly and Plumb
Receiver
Control Box with Battery
120 Volt Indoor
Transformer
(surge protector
not supplied)
Second Gate Opener

Post Bracket Assembly
First Gate Opener
500
500
500
Gate Bracket
Closed Position Positive Stop Plates
4 1/2' Power Cable
Run 1000' (max.) of low
voltage wire to control
box from transformer
(wire not included).
PVC conduit (not included)
to protect second opener
power cable and low voltage wire
from lawn mowers and weed eaters.
Concrete Poured
Around Gate Post
Preparation of the Gate
Step 1
The gates must be plumb, level, and swing freely on
their hinges. Wheels must not be attached to the gates.
The gates must move throughout their arc without
binding or dragging on the ground. Note that gates
over 250 lb. should have ball bearing hinges with grease
fittings.
Horizontal Cross Member
Step 2
The fence posts must be secured in the ground with
concrete so they will minimize twist or flex when the
openers are activated. We recommend you position the
openers near the centerline of the gates to keep the gates
from twisting and flexing and to avoid backsplash from
rainwater. The addition of horizontal or vertical cross
members (if they are not already in place) to provide
a stable area for mounting the gate brackets is also
important.
Vertical Cross Member
11
Installation of Mounting Hardware
The position of the post bracket determines the leverage and efficiency of the opener. The post bracket position also sets the
clearance between the opener and gate in the open and closed positions (minimum 2 inches).
The curved design of the post bracket works well for installations on round and square fence posts. Because the post bracket
carries the entire thrust of the active opener, bolts that completely penetrate the fence post must be used.
On wooden posts, place a metal plate or washer
(not supplied) between the nuts and the fence
post to prevent the thrust of the opener from
pulling the bolts and washers out of the wood.
Wooden Post
Metal Plate
Wooden Post
Metal Plate
NOTE: A fence post smaller than 6" in diameter
or 6" square should be made of metal instead
of wood so that it will remain stable while the
opener is moving the gate.
Post
Bracket
Post 
Bracket
Post
Pivot Bracket
Post 
Pivot Bracket
Larger than 6" diameter post
Center of Gate Hinge
On round posts of 6" diameter or larger, the post pivot bracket may
not be necessary for the installation. In this instance, the two post
brackets are mounted by themselves.

Pull-to-Open Installation
IMPORTANT:
We strongly recommend using steel pipe, wood or metal to reinforce thin walled tube gates or wood to reinforce panel gates
as shown. These reinforcement methods will prevent damage to the opener and gate when the opener is installed.
Recommended Reinforcement Examples
Steel Pipe Cut in Half
(not supplied)
Gate Bracket
Gate Bracket
Panel Gate
Thin Walled Tube Gate
Wood or Metal
Reinforcement
(not supplied)
12
Gate Bracket
1" x 6" Wood Reinforcement
Determining the Mounting Position
of the Post Bracket Assembly and the Gate Bracket
Post Bracket Assembly
Step 3
IInsert the 3/8" x 2" bolt through
the center hole of the post
brackets and post pivot bracket
as shown. Fasten a 3/8" lock
washer, 3/8" washer and 3/8" nut
on the end of the bolt. DO NOT
overtighten the nut because the
post pivot bracket will have to be
adjusted later.
NOTE: The following steps are
intended for pull-to-open gate
installations. If you are mounting
your gate openers on a push-toopen gate (e.g., a gate on a sloped
driveway) you will need to purchase
two Push To Open brackets (see
Accessory catalog). Also, see Pushto-Open Installation beginning on
page 32.
3/8" x 2" Bolt
Post Bracket
Post Pivot Bracket
Post Bracket
3/8" Washer
3/8" Lock Washer
3/8" Nut
Step 4
Attach post bracket assembly and gate bracket to the opener with the clevis pins and bushings. Secure the clevis pins with
hairpin clips.
Clevis Pin
Front Mount
Rear Mount
Clevis Pin
Bushing
Gate Bracket
Opener
Bushing
Hairpin Clip
Post Bracket Assembly
Hairpin Clip
Step 5
With the gate in the open position (up to 110º from its closed position) and the gate opener fully retracted, adjust the post
bracket assembly and gate bracket until the opener is level. While holding the opener level, use C-clamps to temporarily
keep the post bracket assembly and gate bracket in their respective positions on the fence post and gate.
Post Bracket Assembly
Level Opener
LEVEL hori
zontal cro
ss membe
Gate In Open Position 
Fence Post

13
r
Gate Bracket
IMPORTANT: While determining the mounting point for the post pivot bracket assembly, be sure that the position allows
for minimum 2 inches of clearance between the gate and the opener in both the open and closed positions, as shown in the
diagrams below. This clearance will give the opener the most efficient leverage point for opening and closing the gate and
more importantly provides the least possible pinch area.
Step 6
When you feel that you have the best position for the post pivot bracket in the open position, insert the 5/16" x 1-3/4" bolt
through the aligned holes of the post bracket and post pivot bracket to hold it in place. Remove the clevis pin from the front
mount and while supporting the gate opener, swing the gate and gate opener to the closed position. With the gate and gate
opener in the closed position check the clearance and be sure that the gate opener is not binding at the post pivot bracket.
If you don't have 2 inches of clearance or the gate opener is binding on the post pivot bracket, remove the 5/16" x 1-3/4" bolt
and readjust the pivot bracket until you can achieve these important clearances.
With the post pivot bracket in the optimum position for clearance and freedom of movement, reattach the opener to the gate
bracket in the open position and recheck the gate opener level and make sure the brackets are clamped securely.
2" minimum
Gate in the
CLOSED POSITION
Pinch Area
Be sure gate opener
and bracket don't bind.
Pinch Area
Gate in the
OPENED POSITION
2" minimum
TIP: Turning the pivot bracket over gives
more hole alignment options for the post
pivot bracket assembly. You can also move
the entire post pivot bracket assembly to
different positions on the gate post to help
achieve the proper clearances.
14
Installing the Post Bracket Assembly and Gate
Step 7
Mark reference points for bolt holes on the fence post through middle of bracket slots. Marking reference points in this
manner allows room for adjustment when mounting the post bracket assembly and gate bracket. After marking your
reference points, remove the
opener and brackets from the
fence and gate.
EXAMPLES
Mark fence post through 
TOP VIEW
middle of bracket slots
Step 8
and drill 3/8" holes
Drill 3/8" holes into fence post
as marked.
Round Metal Post
Step 9
Fasten post bracket assembly to
the fence post using
(4) 3/8" x 8" bolts, washers,
lock washers, and nuts
(provided). Remove excess
bolt length extending beyond
the tightened nuts with a
hacksaw or bolt cutters.
Square Metal Post
SIDE VIEW
Post Bracket
Assembly
Square Wood Post
NOTE: In cases where the
fence post has a diameter larger
than 6", threaded rods or
carriage bolts longer than 8"
(not supplied) must be used.
Remove excess bolt length 
with hacksaw or bolt cutters
Round Wood Post
Step 10
Mark reference points for bolt holes on
the gate cross member through middle of
gate bracket slots. Drill 3/8" holes into
the gate cross member as marked.
Gate In Open Position 

LEVEL ho
rizontal cr
Mount gate bracket using (2)
3/8" x 3" bolts, washers, lock washers,
and nuts (provided). Cut off excess bolt
length extending beyond the tightened
nuts.
oss membe
r
Mark cross member through middle of
gate bracket slots and drill 3/8" holes
Gate Bracket Mounting Examples
FRONT VIEW

SIDE VIEW
FRONT VIEW
SIDE VIEW
Mounting Plate 
Created for 
Decorative Gate
(required but not
supplied)
Round Tube & Chain Link Gate
Remove excess bolt length 
with hacksaw or bolt cutters
Square Tube Gate
15
Mounting the First Opener
Step 11
Attach the opener to the securely bolted post bracket assembly and gate bracket using clevis pins, bushings, and hairpin
clips, or optional Pin Locks (see Accessory Catalog). Verify that the opener is level and adjust the post bracket assembly if
necessary.
Post Bracket Assembly
bolted to fence post
Level Opener
LEVEL hori
zontal cros
s member
Gate Bracket bolted
to gate cross member
Clevis Pin, Bushing, and Hairpin Clip
Fence Post
Gate In Open Position 
Clevis Pin, Bushing, and Hairpin Clip

Installing the Second Opener
Step 12
Install the second opener on the remaining gate leaf by repeating Step 3 through Step 11, starting on page 13.
After you have mounted the second opener, proceed to Installing the Positive Stops on the next page.
16
Installation of the Closed Position Stops
The Mighty Mule® Gate Openers firmly hold the gates in the closed position using positive stops.
The positive stops help stabilize the gate leaves in the closed position. To further enhance stability
and security, we strongly recommended using an optional Mighty Mule® Automatic Gate Lock
(see Accessory Catalog) with your dual gate.
IMPORTANT: You need to determine
which side of the driveway you will mount the
control box. From this point on the gate and
gate opener on the same side as the control box
will be referred to as the MASTER gate and
gate opener. The gate and gate opener on the
opposite side of the driveway from the control
box will be referred to as the SLAVE gate and
gate opener.
Optional Ground Stop
(beneath gate)
Gate Hinge
MASTER GATE
Closed Position 
Stop Plates
CONTROL BOX
The gate leaf can open
up to 110˚ (max.)
Step 1
Gate Hinge
SLAVE GATE
The gate leaf can open
up to 110˚ (max.)
Closed Position Stop Plate mounted 
horizontally on metal post with U-bolts.
Attach the horizontal closed position stop plate to the
MASTER gate leaf.
Detach the gate operators from the gates and move the
gates to their closed position (Illustration A). Using
appropriate hardware for your type of gate (U-bolts for
tube or chain link; screw or bolts for wood or metal)
attach the closed position stop plate (horizontally) about
mid height on the MASTER gate frame. Do not tighten
it completely at this time. Slide the stop plate toward the
frame of the SLAVE gate leaf until they touch (Illustration
B). Once you have moved the stop plate to the correct
position, tighten its hardware completely.
FRONT VIEW
SLAVE Gate Frame
MASTER Gate Frame
Illustration B
TOP VIEW
NOTE: The optional ground stop post is used to provide a secure point for the SLAVE gate to close
against. If you will be using the GTO/PRO Horizontal Gate Lock accessory with your gate opener
system, the closed position ground stop is REQUIRED, as shown in Steps 2 and 3 on the next page.
17
Step 2
Closed Position Stop Plate mounted
on the gate leaf that CLOSES FIRST
Install a low profile ground stop (not provided) beneath the
SLAVE gate stop plate.
Mount Vertically
The ground stop needs to be positioned near the end of the
gate as shown in Illustration A and may be made of metal
or concrete and should be firmly secured in the ground (we
recommend setting it in concrete).
SIDE VIEW
Closed Position Stop Plate

Low Profile Ground Stop
in Near the Center of Driveway
FRONT VIEW
Step 3
Attach a vertical closed position stop plate to the SLAVE
gate.
Using appropriate hardware for your type of gate attach the
vertical closed position stop plate to the SLAVE gate frame
at the point where it will come in contact with the ground
stop post.. Do not tighten it completely at this time. You must slide the closed position stop plate toward the ground stop until
they touch (Illustration C). Once you have moved the stop plate to the correct position, tighten its hardware completely.
NOTE: For a push-to-open installation (gate opens out from the property) attach the closed position stop plate to the outside
of the gate.
At this stage of the installation, the openers should be installed on the
gate leaves and the open and closed position stops should be in place.
SLAVE Gate Opener
Post Bracket Assembly
MASTER Gate Opener
Gate Bracket
Closed Position
Positive Stop Plates
18
OPTIONAL Closed Position
Ground Stop Post
Mounting the Control Box
Step 1
Mount the control box using the screws (provided) or another
secure mounting method. The control box must be mounted at
least 3 feet above the ground to protect it from rain splash,
snow, etc., and at least 3 feet from an AC power source to
prevent electrical interference.
Use mounting
holes and screws
provided to mount
control box to a
secure surface.
NOTE: The battery that came with your Mighty Mule®,
MUST be placed in the top (horizontal) battery slot
with the terminals on the RIGHT. The extra (vertical)
battery slot is for an optional second battery. An optional
second battery can be used for solar and/or high traffic
applications, if needed..
Step 2
BLACK
Make sure the control box power switch is in the OFF
position. The ON/OFF Switch is located on the bottom of
the control box. Remove the control box cover and slide
the battery into position with its terminals to the RIGHT
(see illustration). Connect the BLACK battery wire to the
NEGATIVE (–) battery terminal. Connect the RED battery
wire to the POSITIVE (+) terminal. Pay close attention to
the color of the wires. If the wires are connected incorrectly,
the control board will be damaged. NEVER insert the
battery with the terminals to the left.
RED
BLACK wire to NEGATIVE (–) terminal
RED wire to POSITIVE (+) terminal
12 Volt Battery
(included)
Step 3
LOCK
PWR
AUX
AUX
RLY
CONTROL
OUTPUTS
GTO
LOCK
POWER
INPUTS
TRANSF
GTO
18 VAC
or
SOLAR
Strip approximately 3/16" of insulation from each
wire of the power cable. Twist each exposed wire
tightly (there are seven [7] wires inside the power cable
sheath). Loosen sealing nut on strain relief hub at
bottom of control box. Insert power cable into control
box through strain relief. Thread approximately 6"
of the power cable into the control box and retighten
sealing nut until the power cable locks into place.
GRN
SLAVE CABLE
WHT
BLU
BRN
ORG
25
FUSE
RED
BLK
GRN
BATT-
BLU
BRN
ORG
RED
Battery wires for
optional second battery.
BATT+
MASTER CABLE
WHT
BLK
COM
STALL FORCE
MIN
1 2 3 4
ON DIP
MAX
ON
ON
PUSH
SIMULT.
ON
ON
STATUS
S2
S3
LEARN RMT
S4
LEARN
SLV LIMIT
LEARN
MAST LIMIT
BLK
RED
ALM
Strain Relief
120
OFF
OFF
AUTO CLOSE TIME
OFF
GRN
RECEIVER
GTO RCVR.
Lock Nut
SOFT START OFF
WARNING
OFF
OPEN
PULL
SLV OPEN DLY.
EXIT
CLOSE
EDGE
OPEN
EDGE
CONTROL INPUTS
SAFETY
SHADOW
MODE1
MODE2
COM
CYCLE
Hub
Sealing Nut
Strain Relief
Space for optional
second 12 Volt battery
(see Accessory Catalog)
Operator Power Cable
19
Connecting Opener Power Cables
MASTER Operator
Step 4
GRN
WHT
BLU
BRN
ORG
RED
BLK
Wrong
Power Cable from the
Master Operator Arm
COM
COM
CYCLE
SAFETY
Wrong
EXIT
SHADOW
CLOSE
EDGE
OPEN
EDGE
Wire
Terminal �
Block
Wire
Terminal �
Block
GRN
RECEIVER
Terminal �
Block
GTO RCVR.
Wire
CONTROL INPUTS
Tighten the set screws against the end of the wires. A
dab of petroleum jelly on each terminal will help prevent
Correct
MASTER CABLE
Insert the stripped power cable wires into the appropriate
terminals on the MASTER CABLE terminal block. The
green wire should be inserted into the GRN terminal, the
white wire into WHT, the blue wire into BLU, brown
wire into BRN, and the orange wire into the ORG,
terminal.
BLK
RED
SLAVE Operator
Step 5
Review the Installation Overview illustration on page 11 before proceeding.
Cut a slot into the driveway to accommodate PVC conduit (not provided). The buried conduit will protect the 40 foot power
cable from automobile tires, lawn mower blades, weed eaters, and grazing animals. Pull the 40 foot second opener power
cable through the conduit and secure them into the slot in the driveway.
AUX
RLY
GRN
BLU
BRN
ORG
SLAVE CABLE
WHT
RED
BLK
Insert the stripped wires of the power cable into the
appropriate terminals on the SLAVE operator terminal
block. The green wire should be inserted into the GRN
terminal, the white wire into WHT, the blue wire into
BLUE, brown wire into BRN, and the orange wire into
the ORG terminal, red wire into RED, and black wire
into BLK.
GRN
BLU
BRN
ORG
RED
MASTER CABLE
WHT
BLK
Tighten the set screws against the end of the wires.
COM
COM
20
CON
CYCLE
CONTROL
OUTPUTS
PWR
Power Cable from the
Slave Operator Arm
AUX
Strip approximately 3/16" of insulation from each wire
of the 40 foot power cable. Twist each exposed wire
tightly. Insert the second opener power cable upward
through the right strain relief (if necessary, loosen the
sealing nut). Thread approximately 4" of wire into the
control box. Retighten strain relief (on the black sheath
of the power cable) until the power cable locks into
place.
LOCK
GTO
LOCK
Step 6
Powering the System
Installation of the Transformer
IMPORTANT:
•
The transformer is designed and intended for indoor use. If the transformer can be plugged only into
an outside electrical outlet, a weatherproof cover or housing (available at local electrical supply stores)
must be used.
•
All low voltage wire used with the Mighty Mule® Gate Opener must be 16 gauge dual conductor,
multi-stranded, direct burial wire (see page 22 and the accessory pages). Do not run more than 1000
feet of wire.
If your gate is more than 1000 ft. from an ac power source, you will need to use at least one 5 watt
Solar Panel to charge the battery (see the accessory pages). Refer to the Solar Panels and Gate
Activity chart below.
•
OPTIONAL Solar Panels and Gate Activity
Winter Ratings
The table and map illustrate
the maximum number of
gate cycles to expect per day
in a particular area when
using from 10 to 30 watts of
solar charging power. (see
Accessory Catalog). The
figures shown are for winter
(minimum sunlight) and do not account for
the use of any accessory items. Accessories
connected to your system will draw additional
power from the battery.
12 v dual gate (10 watts) solar charger 12 v dual gate (15 watts) solar charger 12 v dual gate (20 watts) solar charger 12 v dual gate (25 watts) solar charger 12 v dual gate (30 watts) solar charger Zone 1
4
7
10
13
16
Zone 2
Zone 3
8
13
18
23
28
13
20
27
34
41
NOTE: A maximum of 30 watts of solar
charging power can be connected to the
Mighty Mule® Gate Opener. Consult Solar
Panel Installation Instructions for further
information.
Step 1
Make sure the power switch is OFF before proceeding to the next step.
Step 2
ON/OFF Switch
Select the electrical outlet into which you will plug the transformer.
Measure the distance from this outlet to the control box following the
path where the wire will be laid. After you have measured how much
wire is needed, cut the wire to the appropriate length.
21
IMPORTANT INFORMATION ABOUT LOW VOLTAGE WIRE
The only wire acceptable for use with GTO products is 16 gauge multi-stranded, low voltage, PVC
sheathed wire. This particular gauge enables the transformer to provide an adequate charge through the
control board to the battery at distances up to 1000 ft.
DO NOT use telephone wire or solid core wire. Unlike multi-stranded wire, these types of wire are
inadequate for use with your gate opener system. Telephone wire and solid core wire do not deliver
enough voltage for your gate opener to function and will cause the system to go into a condition known
as "low voltage lockout."
NEVER splice wires together. Splicing permits corrosion and seriously degrades the wire's ability to
carry an adequate current.
Step 3
POWER
INPUTS
GTO
LOCK
AUX
RLY
CONTROL
OUTPUTS
Lay the measured length of low voltage wire in a trench following a path from
the selected electrical outlet to the control box. Wires coming up from the
ground should be run through PVC conduit to protect them from lawn mower
blades, weed eaters, and grazing animals. Be sure to bury the wire laid in the
trench.
SLAVE CABLE
25
FUSE
BATTBATT+
MASTER CABLE
CONTROL INPUTS
Step 4
1 2 3 4
RECEIVER
GTO RCVR.
Feed the low voltage wires upward through the strain relief opening on the
lower left of the control box. Pull 6" to 8" of wire into the control box and
tighten the strain relief screw to secure the wires.
Power Cable from
Slave Arm
Low Voltage Wire
from Transformer
Power Cable from
Master Arm
WARNING! DO NOT PLUG THE TRANSFORMER
INTO AN OUTLET DURING THIS STEP! THE
TRANSFORMER MUST ONLY BE PLUGGED INTO
AN OUTLET DURING STEP 7!
POWER
INPUT
AUX
RLY
AUX
GRN
BLU
BRN
ORG
SLAVE CABLE
WHT
Insert one transformer wire into an 18VAC terminal.
Insert the other transformer wire into the remaining
18VAC terminal. The transformer wires can be
connected to the 18VAC terminals regardless of
polarity or color.
RED
BLK
GRN
BLU
BRN
ORG
RED
BLK
22
MASTER CABLE
WHT
Tighten set screws against exposed end of wires. A
dab of household petroleum jelly on each terminal will
help prevent corrosion.
CONTROL
OUTPUTS
PWR
LOCK
Low Voltage Wire
from AC Transformer
or Solar Panel
GTO
LOCK
Strip 3/16" off the ends of the low voltage wire
and twist tightly. Attach these ends to the 18VAC
terminals located on the POWER IN terminal block
(see illustration at right). Be certain not to let the
exposed wires touch each other!
RED
BLACK
GTO 18VOLT
TRANSFORMER
OR SOLAR
Step 5
PVC Pipe
Step 6
Strip 1/2" of insulation from the ends of the low voltage
wire. Attach these stripped ends to the transformer
terminals.
A dab of household petroleum jelly on each terminal will
help prevent corrosion.
Transformer
Step 7
Plug the transformer into the electrical outlet.
(Use of a surge protector with the transformer is strongly
recommended.)
HINT: Keep a few mothballs in the control box to
discourage insects from entering it and damaging the
control board.
NOTE: If transformer will be located outside be sure
to enclose in a weatherproof cover (not included).
23
SURGE PROTECTOR
Make sure the exposed wires do not touch each other!
CONTROL BOARD SETTINGS
DIP Switches
NOTE: Leave DIP Switch #3 in the OFF position until installation is complete, to prevent gate from
automatically closing during installation.
DIP
DIP Switch #2 - Warning Buzzer
ON - Buzzer warning enabled (factory preset).
OFF - Buzzer warning disabled.
The Warning Buzzer alerts you when the gate
opener is beginning to either open or close the
gate. It sounds for the first 2 seconds in each
direction. It also sounds a warning when the gate
obstructs two times in one cycle. Switching this to
OFF only disables the open and close warning not
the obstruction warning.
ON
OFF
DIP Switch #1 - Soft Start/Stop
ON - Soft start enabled (factory preset).
OFF - Soft start disabled.
The Soft Start/Stop feature slowly starts the gate
as it begins to open and slows the gate as it comes
to the closed position. This saves wear and tear on
the gate and gate opener system.
ON
1 2 3 4
Main DIP Switch Settings (MODES)
AUTO CLOSE TIME
STALL FORCE
STATUS
LEARN RMT
OFF
120
MAX
ON DIP
OFF
OFF
PULL
DLY.
OFF
OFF
1 2 3 4
SOFT START
WARNING
OPEN
SLV OPEN
MODE1
MODE2
MIN
ON
ON
PUSH
SIMULT.
ON
ON
DIP Switch #3 - Push/Pull-to-Open
ON - Push to open.
OFF - Pull to open (factory preset).
If your gate opens into the property the DIP
Switch is set to the OFF position (factory setting).
If your gate opens out from the property the DIP
Switch must be set to the ON position. NOTE:
if you have a Push-to-Open gate application you
will need a Push-to-Open bracket (see Push-toOpen Instructions on page 30).
S3
LEARN
MAST LIMIT
S2
LEARN
SLV LIMIT
S4
DIP Switch #4 - Delay/Simultaneous operation
ON - Slave opens simultaneously with master.
OFF - Slave opens after master.
NOTE: Not applicable for single gate operator.
AUTO CLOSE TIME
Auto Close
STALL FORCE
STATUS
The 'AUTO CLOSE TIME' pot controls
auto close feature.
Turning the pot all the way counter-clockwise
will turn auto close feature off. The minimum
auto close time is 3 seconds. The maximum
(turn the pot all the way clockwise) auto close
time is 120 seconds.
LEARN RMT
OFF
OFF
OFF
MAX
ON DIP
MODE1
MODE2
Auto Close Time Pot
OFF
OFF
PULL
DLY.
MIN
1 2 3 4
SOFT START
WARNING
OPEN
SLV OPEN
120
ON
ON
PUSH
SIMULT.
S3
LEARN
MAST LIMIT
ON
ON
S2
LEARN
24
Setting the Closed Position Limits
for Pull to Open Applications
TURN CONTROL BOX ON
Your Mighty Mule® has two Limit Settings
1) OPEN Limit setting: (Gate in the OPEN POSITION / FACTORY SET NOT ADJUSTABLE) The open limit setting is
the fully open position.
2) CLOSED Limit setting: (Gate in the CLOSED POSITION) To achieve optimum closed position, you are required
to complete the following SEVEN STEPS:
Step 1
Confirm that the power switch is in the ON position, and the gates are in the OPEN POSITIONS.
Step 2
Activate your openers by pressing the entry transmitter
button. Your gates should now be moving from the fully
open positions toward their closing position. Prepare to
STOP gate that reaches the desired closed position first
by pressing the entry transmitter button again. This step
may be repeated until desired close position is achieved.
Once the desired CLOSED position has been achieved,
proceed to step 3.
CLOSE TIME
STALL FORCE
STATUS
LEARN RMT
120
Note which gate has reached the desired closed position
(typically it's the slave gate), program the closed limit
setting by pressing and holding the corresponding
'LEARN MAST LIMIT' or 'LEARN SLV LIMIT' for 5
seconds.
MAX
ON DIP
OFF
OFF
Step 3
1 2 3 4
ART OFF
G
OFF
PULL
EN DLY.
MIN
ON
ON
PUSH
SIMULT.
ON
ON
S3
LEARN
MAST LIMIT
S2
LEARN
SLV LIMIT
S4
Learn Master Limit
Button
Learn Slave Limit
Button
Step 4
Press the transmitter button and allow the gates to
return to the fully open position. YOUR FIRST
GATE’S CLOSED POSITION LIMIT IS NOW
PROGRAMMED.
Step 5
Activate your openers again by pressing the entry transmitter button. Your gates should now be moving from the fully open
positions toward their closing position. The first gate will stop at the spot you just programmed and the second gate will
continue to close until you press the transmitter button again. The optimum CLOSED POSITION for the second gate is
when it closes firmly, without excess tension, against the first gate. This step may be repeated until desired close position is
achieved. Once the desired CLOSED position has been achieved, proceed to step 6.
Step 6
Repeat step 3 for the other gate that has not been set in step 3.
Step 7
Press the transmitter button and allow the gates to return to the fully open position. BOTH YOUR MASTER AND SLAVE
GATE’S CLOSED POSITION LIMITS ARE NOW PROGRAMMED.
25
TESTING YOUR CLOSED LIMIT SETTING:
Press your entry transmitter and allow your gates to close. If CLOSED positions are not correct or need to be changed, you
will need to CLEAR your CLOSED LIMIT settings and follow Steps 1-7 again.
CLEARING PROGRAMMED CLOSED LIMIT SETTING:
If you make a mistake and set the limit at the wrong position – press your transmitter to return the gates to their fully opened
positions, then press and hold the 'LEARN MAST LIMIT' or 'LEARN SLV LIMIT' button for 5 seconds. This will clear the
memory for the closed limit positions. Follow Steps 1-7 again.
Setting Your Personal Transmitter Code
All GTO transmitters are set to a standard code at the factory and are ready to operate your Mighty Mule® Gate Opener®.
For your safety and security, however, we strongly recommend that you replace the factory setting with your own personal
code. Follow the directions below:
1. Remove the Transmitter Cover
On the back of the transmitter use a small phillips head screw driver to remove
the two screws on the sides of the visor clip and separate the front cover from the
transmitter. With the front cover removed, the battery and the DIP switches will
be exposed. To set a new code, use a small screwdriver to move the switches.
LE
D
–
0
+
1
2
3
4
5
A2
AL
KA
LI
3S
NE
12
BA
TT
ER
6
7
8
9
EC
E
V
Y
2. Set the transmitter DIP Switches
There are nine (9) transmitter DIP switches; each can be placed in three different
positions (+, 0, –). DO NOT set all the switches in the same position, such as all +,
all 0, or all –. Once the DIP switches have been set to a personal code, replace front
cover.
1 2 3 4 5 6 7 8 9
+
0
ECE
WARNING: No other adjustments should be made inside the transmitter.
3. “Teach” the New Code to Control Board Memory
CLOSE TIME
STALL FORCE
STATUS
LEARN RMT
120
OFF
OFF
MAX
ON DIP
ART OFF
G
OFF
PULL
EN DLY.
MIN
1 2 3 4
A. Press and hold transmitter button.
B. Press and hold the LEARN RMT (Learn Remote) button
on the control board until the buzzer sounds.
C. Release transmitter button. The new code
is stored in control board memory.
D. Release the LEARN RMT (Learn Remote) button.
ON
ON
PUSH
SIMULT.
ON
ON
S3
LEARN
MAST LIMIT
S2
LEARN
SLV LIMIT
S4
26
Learn Remote
Button
Obstruction Sensitivity Potentiometer
STALL FORCE
E
AUTO
TO
O CLOSE TIME
OFF
O
The Stall Force potentiometer on the control
board operates like a volume control on a radio.
It controls the obstruction sensitivity (or the amount
of force the opener will apply to an obstruction)
before it automatically stops and reverses direction for
approximately two (2) seconds.
MAX
SOFT START
WARNING
OPEN
SLV OPEN
MODE1
MODE2
OFF
OFF
PULL
DLY.
MIN
MAX
ON
MIN
120
0
STALL FORCE
FO
O
1 2 3 4
IMPORTANT: For safety reasons the
obstruction setting or Stall Force on the
Mighty Mule® control board comes from
the factory set at MIN (minimum). In many
gate installations this setting will need to be
adjusted to overcome the weight and size of
the gates.
OFF
OFF
ON
ON
PUS
S
SIM
M
ON
ON
Use a small slotted screwdriver to turn the arrow in the center of
the potentiometer. Adjust the sensitivity from the MINIMUM position
where the gate operates without obstructing from its own weight or the
wind conditions in your area.
NOTE: You may need to increase the stall force in cold weather due to
increased resistance from gate hinges.
ALWAYS KEEP SAFETY AT THE TOP OF YOUR LIST WHEN ADJUSTING OR
SERVICING YOUR AUTOMATIC GATE OPENER!
Installing the Receiver
Use the transmitter to check the range of the receiver before permanently mounting it.
Consider the following when mounting the receiver:
• Standard receiver cable length is 10 feet (receivers with a longer cable are available as special order items; call the GTO Sales Department). NEVER splice receiver cable!
• Run the cable through PVC conduit to protect it from damage.
• DO NOT run cable through metal conduit because the receiver signal range will be decreased.
• DO NOT run cable in conduit containing ac wiring.
• DO NOT mount receiver on a metal fence or post; doing so will decrease signal range.
• The receiver range can vary from 50 to 100 feet depending upon weather, topography, and
external interference.
• DO NOT mount upside down.
• MOUNT so that you have line of sight between remote and antenna.
• MOUNT 3 feet away from AC voltage.
FCC Regulation
This device complies with FCC rules Part 15. Operation is subject to the following
conditions:
1. This device may not cause harmful interference.
2. This device must accept an interference that may cause undesired operation.
Transmitter distance may vary due to circumstances beyond our control. NOTE:
The manufacturer is not responsible for any radio or TV interference caused by
unauthorized modifications to this equipment. Such modifications could void the
user’s authority to operate the equipment.
27
Connecting Additional Safety Devices
Although GTO strongly recommends the use of additional safety devices, we do not endorse any
specific brand names. Only use products that are certified and listed to be in compliance with any
applicable UL safetystandards (Underwriters Laboratories) and national and regional
safety codes.
Call GTO Sales at 1-800-543-4283 for information on compatible
products for your specific application.
The Mighty Mule® 502 will ONLY accept accessory devices with normally open dry contact output.
Contact Sensors (safety edges)
If not installing a contact sensor skip to next section.
PLEASE NOTE: Contact sensors are not included with the Mighty Mule® 502.
The Mighty Mule® 502 is equipped with built-in obstruction sensitivity. The opener is designed to stop and reverse the
gate within 2 seconds when it comes in contact with an obstruction. However, obstruction sensitivity, although functioning
properly, may not be sensitive enough to prevent bodily injury in some circumstances. To augment your protection against
entrapment, GTO recommends using some form of additional safety device. When installed, contact sensors must be
mounted in compliance with UL 325, Underwriters Laboratories safety standard for gate openers. Review page 5 for information about mounting requirements for safety edges ("contact sensors").
Refer to the sensor manufacturer’s instructions for information
about installing these devices on a vehicular gate.
Make sure the power switch to the opener is
turned off before connecting safety device
wiring to the terminal blocks. Unplugging
the transformer does not turn power to the
opener OFF.
RECEIVER
Connect one of the CLOSE EDGE contact sensor wires
to the COMMON (COM) terminal and the other to the
CLOSE EDGE terminal on the Mighty Mule® 502
control board.
RED
BLK
GRN
CLOSE
EDGE
OPEN
EDGE
SHADOW
EXIT
SAFETY
CYCLE
Connect one of the OPEN EDGE contact sensor wires
to the COMMON (COM) terminal and the other to
the OPEN EDGE terminal on the Mighty Mule® 502
control board.
COM
BLK
Contact Sensor Input Connection:
COM
CONTROL INPUTS
ALM
GTO RCVR.
Wire from Contact Sensor
(open safety edge)
Activation of a contact sensor while the gate is in motion will
cause the gate to stop and reverse within two (2) seconds.
Wire from Contact Sensor
(close safety edge)
NOTE: If the close edge is contacted when the gate is opening, nothing happens. If the close edge
is contacted when the gate is closing, then it reverses. If the open edge is contacted when the gate is
closing, nothing happens. If the open edge is contacted when the gate is opening, then it reverses.
28
Non-Contact Sensors (photo beams)
If not installing a non-contact sensor skip to next section.
PLEASE NOTE: Non-contact sensors are not included with the Mighty Mule® 502.
The Mighty Mule® 502 can also accept "Safety" input from normally open "dry-contact" output devices such as safety beams
connected to the SAFETY input terminal.
Refer to the sensor manufacturer’s instructions for
information about installing these devices on a vehicular
gate.
RECEIVER
Make sure the power to the opener is turned
off before connecting safety device wiring to the
terminal blocks. Unplugging the transformer
does not turn power to the opener OFF.
BLK
RED
GRN
CLOSE
EDGE
OPEN
EDGE
SHADOW
EXIT
CYCLE
SAFETY
Connect one of the non-contact sensor dry contact output
wires to the COMMON (COM) terminal and the other to the
COM
COM
BLK
Non-Contact Sensor Connection:
CONTROL INPUTS
ALM
GTO RCVR.
This input is ONLY monitored when the gate
is closing. Activating the non-contact sensor
(obstructing the safety beam path) will cause the
gate to reverse to the fully open position.
Wire from Non-Contact
Sensor (photo beam/loop detectors)
Shadow Loop
If not installing a shadow loop skip to next section.
PLEASE NOTE: Non-contact sensors are not included with the Mighty Mule® 502.
The Mighty Mule® 502 can accept "Shadow Loop" input
from Loop Detector that provides normally open "dry-contact"
connected to "Shadow" input terminal.
Refer to the sensor manufacturer’s instructions for information
about installing these devices on a vehicular gate.
RED
BLK
GRN
CLOSE
EDGE
OPEN
EDGE
SHADOW
EXIT
SAFETY
CYCLE
COM
COM
CONTROL INPUTS
BLK
Make sure the power to the opener is turned
off before connecting safety device wiring to the
terminal blocks. Unplugging the transformer does
not turn power to the opener OFF.
RECEIVER
ALM
GTO RCVR.
Shadow Loop Connection:
Connect the COM wire from the Loop Detector to the COMMON
(COM) terminal and the Normally open Wire from the Loop
Detector to the SHADOW terminal on the Mighty Mule® 502
control board.
The SHADOW LOOP is a detector located with the moving path
of the gate to prevent the gate from closing when a vehicle is in the
path.
This input is ONLY monitored when the gate is at
the fully open position. Activating this will prevent
the gate from closing.
29
Wire from Loop Detector
Connecting Accessories
If not connecting accessories skip to next section.
The Mighty Mule® 502 can accept NORMALLY OPEN, DRY-CONTACT accessories, such as; Push Button Entry
Devices and Key Pads.
Refer to the sensor manufacturer’s instructions for information about installing these devices on a vehicular gate.
Make sure the power to the opener is turned off
before connecting Cycle Input device wiring to
the terminal blocks. Unplugging the transformer
does not turn power to the opener OFF.
RECEIVER
Accessory Input Connection:
CONTROL INPUTS
Each activation of the accessory will cause the
gate to cycle as follows:
OPEN
STOP
CLOSE
RED
BLK
GRN
CLOSE
EDGE
OPEN
EDGE
SHADOW
EXIT
SAFETY
CYCLE
COM
COM
BLK
Connect one of the accessory wires to the COMMON
(COM) terminal and the other to the CYCLE terminal on the
Mighty Mule® 502 control board.
ALM
GTO RCVR.
STOP
Wire from Accessory
(push button, key pad, etc.)
Free Exit Input
The Mighty Mule® 500 can accept NORMALLY OPEN, DRYCONTACT free exit/entry devices such as GTO Wand and Loop
Detector.
RECEIVER
Refer to the sensor manufacturer’s instructions for
information about installing these devices on a
vehicular gate.
RED
BLK
GRN
CLOSE
EDGE
OPEN
EDGE
SHADOW
EXIT
SAFETY
CYCLE
COM
COM
Make sure the power to the opener is turned off
before connecting Free Exit/Entry device wiring to
the terminal blocks. Unplugging the transformer
does not turn power to the opener OFF.
BLK
CONTROL INPUTS
ALM
GTO RCVR.
Free Exit Connection:
Connect the Exit Wand BLK wire to the COMMON (COM)
terminal and the Exit Wand BLU wire to the EXIT
terminal on the Mighty Mule® 500 control board.
Activation of this input will cause the gate to open
to the fully opened position. As long as contact is
held, gate will remain open.
30
Wire from Exit/Entry Device
(GTO Wand, Loop Detector etc.)
Connecting GTO Automatic Gate Lock
If not connecting gate lock skip to next section.
POWER
INPUTS
GTO Lock:
GTO
For use exclusively with GTO Lock (FM143 or FM144).
Connecting other devices to these terminals may cause incorrect
operation and void your warranty.
TRANSF
LOCK
AUX
RLY
18 VAC
GTO
LOCK
AUX
or
GTO Lock Connection:
CONTROL
OUTPUTS
SOLAR
PWR
SLAVE CAB
GRN
WHT
BLUE
BRN
ORG
SLAVE INPUT
Connect the red and black leads from the lock to the GTO LOCK
terminal on the MIGHTY MULE® 502 control board.
Aux:
• These 2 terminals are normally open 'dry-contact'
(no voltage) relay ouput.
• These 2 terminals are ON (shorted) whenever the gate is
moving and OFF (opened) otherwise.
• These 2 terminals maximum rating is 24Vdc, 1 Amp.
OC
L
G TO
31
K
Wire from
Automatic GTO Lock
Push to Open Installation
Swinging gates shall not open into public access areas!
A "Push-to-Open" gate opens out from the property.
A Push-to-Open Bracket is required for this type of installation (see
Accessory Catalog). If you have a pull-to-open gate (gate opens into the
property), return to page 13; step 3.
In a PUSH-TO-OPEN installation the openers are installed while the gates
are in the closed position.
Step 1
With the gates closed, adjust the post bracket assembly and the gate
bracket until the opener is level. While holding the opener level, use
C-clamps to temporarily keep the post bracket assembly and gate
bracket in their respective positions on the fence post and gate.
Post Bracket Assembly
Determining The Mounting Position
of The Post Bracket Assembly
3/8" x 2" Bolt
Post Bracket
Push-To-Open Bracket
(optional accessory)
Post Bracket
3/8" Washer
3/8" Lock Washer
3/8" Nut
IMPORTANT: While determining the mounting point for the post
pivot bracket assembly be sure that the position allows for maximum
clearance between the gate and the opener in both the open and closed
positions, as shown in the diagrams below. This clearance will give the
opener the most efficient leverage point for opening and closing the gate
and more importantly provides the least possible pinch area.
Step 2
After verifying that you have the best position
for the post pivot bracket, insert the 5/16" x 1 3/4"
bolt through the aligned holes of the post bracket
and post pivot bracket and fasten it with the 5/16"
washer and nut.
Gate in the Open Position
Pinch Area (gray)
IMPORTANT: If you loosened the clamp on
the post bracket to achieve the optimum position,
tighten it in its new position and recheck the gate
bracket with the gate in the open position (move the
gate bracket and re-clamp it if necessary).
2" minimum
Gate in the Closed Position
Pinch Area (gray)
2" minimum
32
Step 3
With the gate in the fully closed position and the opener retracted, swing the opener to the gate. Mark reference points for
bolt holes on gate cross member through middle of gate bracket slots. The opener must be level. (Some vertical adjustment
is possible by sliding the post bracket assembly up and down.) Drill 3/8" holes into the gate cross member as marked. Fasten
gate bracket to cross member using (2) 3/8" x 3" bolts, washers, lock washers, and nuts. Attach the opener to the post bracket
assembly and gate bracket using clevis pins, bushings, and hairpins clips.
Fence Post
LEVEL
Gate Post and Gate Cross Member
(In Closed Position)
Operato
r
LEVEL
POST PIVOT BRACKET level with the
horizontal surface of the GATE BRACKET
LEVE
2
3
4
OFF
ON
ON
MAX
OFF
OFF
MIN
120
1 2 3 4
OFF
OFF
PULL
DLY.
ON
MODE1
1
DIP
OFF
ON
ON
ON DIP
SOFT START
WARNING
OPEN
SLV OPEN
Make sure the control box power switch is OFF. Use a
small screwdriver to move the Number 3 DIP switch from
the factory setting (OFF / Pull-To-Open) to ON for PushTo-Open. Turn power switch ON. The control board is now
configured to push the gate open.
AUTO CLOSE TIME
STALL FORCE
FORC
Step 4
ON
ON
PUS
PUSH
SIMU
SIMULT.
L
Step 5
Install the second gate opener on the other gate in the same
manner. Then refer to the CONTROL BOARD SETTINGS
on page 25 for gate sequencing and other programming steps
before proceeding.
DIP#3
ON
Push-to-open operation.
OFF
Pull-to-open operation (factory setting).
Setting the Open Position Limit
Step 1
Confirm that the power switch is in the ON position, and the gates are in the CLOSED POSITIONS.
Step 2
Activate your openers by pressing the entry transmitter button. Your gates should now be moving from the closed positions
toward their open position. Prepare to STOP gates by pressing the entry transmitter button again when the first gate reaches
the desired open position. This step may be repeated until desired open position is achieved. Once the desired OPEN
position has been achieved, proceed to step 3.
33
Step 3
Note which gate has reached the desired closed position (typically it's the slave gate), program the closed limit setting by
pressing and holding the corresponding 'LEARN MAST LIMIT' or 'LEARN SLV LIMIT' button for 5 seconds.
Step 4
Press the transmitter button and allow the gates to return to the closed position. YOUR FIRST GATE’S OPEN POSITION
LIMIT IS NOW PROGRAMMED.
Step 5
STALL FORCE
STATUS
LEARN RMT
120
OFF
OFF
MAX
ON DIP
ART OFF
G
OFF
PULL
EN DLY.
MIN
1 2 3 4
Activate your openers again by pressing the
entry transmitter button. Your gates should now
be moving from the closed positions toward
their open positions. The first gate will stop at
the spot you just programmed and the second
gate will continue to open until you press the
transmitter button again. Press the transmitter
button when the second gate reaches the desired
open position. This step may be repeated until
desired open position is achieved. Once the
desired OPEN position has been achieved,
proceed to step 6.
CLOSE TIME
ON
ON
PUSH
SIMULT.
ON
ON
S3
LEARN
MAST LIMIT
S2
LEARN
SLV LIMIT
Step 6
S4
Repeat step 3 for the other gate that has not been
set in step 3.
Learn Master Limit
Button
Learn Slave Limit
Button
Step 7
Press the transmitter button and allow the
gates to return to the closed position. BOTH
YOUR MASTER AND SLAVE GATE’S
OPEN POSITION LIMITS ARE NOW
PROGRAMMED.
TESTING YOUR OPEN LIMIT SETTING:
Press your entry transmitter and allow your gates to open. If OPEN positions are not correct or need to be changed, you will
need to CLEAR your OPEN LIMIT settings and follow steps one (1) to seven (7) again.
CLEARING THE PROGRAMMED OPEN LIMIT SETTING:
If you make a mistake and set the limit at the wrong position – press your transmitter to return the gates to their closed
positions, then press and hold the 'LEARN MAST LIMIT' or 'LEARN SLV LIMIT' button for 5 seconds. This will clear the
memory for the open limit positions. Follow steps one (1) to seven (7) again.
34
Troubleshooting Guide
If your gate opener does not function properly after it is installed, use this guide before calling the GTO Service Department.
Audible Feedback
Symptom
Diagnosis
1 short beep upon activation Blown Fuse
Low or Bad Battery
Loose Battery Connection
Check:
Fuse
Battery Under Load
Battery Harness Connections
1 short beep upon power up Circuit Board Powered Up & Normal Operation
Ready
Continuous Uninterrupted
Alarm
Circuit Board Senses an
Obstruction
1 beep with 10 seconds off
Low Battery Condition
1 beep then 2 beeps
Master Motor Terminals
Shorted
1 beep then 3 beeps
Path of Gate
Gate for Level and Plumb
Stall Force Adjustment
Disconnect Safety Devices
Rev Counter
Fuses
Battery Harness Connections
Battery Under Load
•
•
•
•
Connections to Master Inputs
Master Arm Power Cable
Motor
Circuit Board
Slave Motor Terminals
Shorted
•
•
•
•
Connections to Master Inputs
Master Arm Power Cable
Motor
Circuit Board
1 beep with 2 seconds off
Master Arm Limit Switch
Error
•
•
•
Connections to Master Inputs
Master Arm Power Cable
Master Input ORG & GRN, BRN & GRN voltage with
wires disconnected. 11VDC across each terminal.
2 beeps with 2 seconds off
Slave Arm Limit Switch Error
•
•
•
Connections to Slave Inputs
Slave Arm Power Cable
Slave Input ORG & GRN, BRN & GRN voltage with
wires disconnected. 11VDC each across each terminal.
3 beeps with 2 seconds off
Master Arm Rev Counter
Error
•
•
•
Connections to Master Inputs
Master Arm Power Cable
Rev Counter
4 beeps with 2 seconds off
Slave Arm Rev Counter Error
•
•
•
Connections to Master Inputs
Master Arm Power Cable
Rev Counter
35
Visual Feedback
-Symptom
Diagnosis
Check:
Status (clear) 1 blink
Cycle Terminal
Shorted
Disconnect the push button, keypad, intercom keypad, or any other accessory
wired to this terminal. Try the remote. If the remote works, then the problem
is the accessory.
Status (clear) 2 blinks Safety Terminal
Shorted
Disconnect the loop detector, photo beam, or any other accessory wired to this
terminal. Try the remote. If the remote works, the problem is the accessory.
Status (clear) 3 blinks Exit Terminal Shorted Disconnect exit wand, loop detector, photo beam, Knox box, or any other
accessory wired to this terminal. Try remote. If the remote works, the
problem is the accessory.
Status (clear) 4 blinks Shadow Terminal
Shorted
Disconnect the loop detector, photo beam, or any other accessory wired to this
terminal. Try remote. If the remote works, the problem is the accessory.
Status (clear) 5 blinks Close Edge Terminal
Shorted
Disconnect the edge sensor, photo beam, or any other accessory wired to this
terminal. Try the remote. If the remote works, the problem is the accessory.
Status (clear) 6 blinks Open Edge Terminal
Shorted
Disconnect edge sensor, photo beam, or any other accessory wired to this
terminal. Try the remote. If the remote works, the problem is the accessory.
RF (yellow) Flickers
Receiving 318 MHz
RF
RF (yellow) OFF
No 318 MHz RF
Received
Power (green) ON
AC or Solar Power
Present
Power (green) OFF
No AC or Solar Power
Normal operation when remote or wireless keypad is used.
•
•
•
•
Battery in Remote
Program Remote
Antenna Receiver Connections
Antenna Receiver
Normal Operation
Transformer:
• Breaker or GFI
• Power at AC outlet.
• Output of Transformer.
• Voltage on wire at 18 VAC Input
Solar:
•
•
•
•
•
Solar Panel Wires Reversed
Weather
Solar Panel Placement
Output of Solar Panel
Voltage on wire at Solar Input
Charge (red) ON
Fast Charging Mode
Charge (red) Fast
Blinking
Soak Charging Mode Battery Voltage should be ~14.1 VDC when connected to the circuit board
Charge (red) Slow
Blinking
Float Charge
Battery Voltage should be ~13.8 VDC when connected to the circuit board
Battery Not Being
Charged
AC power
Transformer
Solar Panel
Charging Circuit
Charge (red) OFF
Battery Voltage should be ~14.8 VDC when connected to the circuit board
36
Repair Service
If your Mighty Mule® Gate Opener is not operating properly, please follow the steps below:
1. First use the procedures found in the Troubleshooting Guide (see page 35).
2. If you are unable to solve the problem, call the GTO Service Department at (800) 543-1236, or (850) 575-4144.
Refer to the serial number (located on the control box cover) and date of purchase when calling for assistance.
3. If repair or replacement of your gate opener is necessary, the Service Department will assign a Return Goods Authorization (RGA) number to you for warranty repair.
4. Securely pack the component(s) authorized for return to the factory. Include a copy of your receipt. Write the RGA number issued to you on the outside of the package in LARGE BOLD PRINT. Ship the package(s) freight prepaid to:
GTO, Inc., 3121 Hartsfield Road, Tallahassee, Florida, USA 32303.
NOTE: Products returned to GTO without a Return Goods Authorization (RGA) number in LARGE
BOLD PRINT on the outside of the package WILL NOT be accepted. Also, items returned to GTO freight
collect WILL NOT be accepted.
VOLTAGE RATINGS
18 Vac Transformer____________________________18.0 to 22.0 Vac
5 W Solar panel (single)________________________18.0 to 22.0 Vdc 300 mA
measure voltage at panel and control box.
12 V Battery_ ________________________________12.0 to 13.5 Vdc 7.0 Ah
Charging circuit ______________________________12.0 to 14.8 Vdc
measure voltage with battery connected
The GTO, Inc. Technical Service Department is open
Monday – Friday 8:00 A.M. – 7:00 P.M. (Eastern Time)
Telephone (800) 543-1236
Telephone (850) 575-4144
Fax (850) 575-8950 • Web site: www.mightymule.com
E-Mail: [email protected]
GTO, Inc.
3121 Hartsfield Road • Tallahassee, Florida, USA 32303 • (800) 543-4283 • (850) 575-0176 • Fax (850) 575-8912 •
Web site www.gtopro.com
37
Column Installation Information
IF THIS OPENER WILL BE USED WITH GATES THAT ARE MOUNTED ON
MASONRY, BRICK, OR ROCK (etc.) COLUMNS:
READ THE FOLLOWING CAREFULLY BEFORE PROCEEDING
A.
The simplest solution is to install the opener in a push-to-open configuration (requires Push-To-Open Bracket,
see Accessory Catalog). The minimum clearance is easier to achieve and clearance is no longer a problem,
since the opener will be pushing the gate away from the column instead of pulling it toward the column. It
is recommended that you place a steel plate between the opener mounting brackets and masonry surface for
additional strength.
B.
If a push-to-open installation is impossible due to traffic hazards, terrain, etc., another option is to re-hang the
gate. You may hang it on a post, either in the center of the column or at the back corner, or move the gate to the
back corner of the columns.
C.
The most difficult solution is to cut a notch in the column to accommodate the opener and power cable. This
job is NOT for the inexperienced!
Column Mount Example
(A + B can not exceed 14 inches)
Example: If A is 2" then B can not exceed 12"
A
Pivot Bracket
B
Gate
Column
Hinge
38
®
E-Z GATE OPENERS
®
ACCESSORIES
Accessories are Available From Your Retail Store
Solar Panel (FM121)
The Solar Panel is a 10 watt solar powered battery charger for use with the FM500 & FM502 gate
operator systems. Particularly suited for remote installations, each Solar Panel comes with tubular
steel support, mounting clips, wire connectors, and 8 ft. of low voltage wire (see Low Voltage Wire
for additional wire). The Mighty Mule® control board has clearly labeled terminal connections for
easy installation of the Solar Panel. Installation in some regions of the world will require multiple
solar panels for adequate charging power. Solar Panel (FM122) is a 5 watt solar powered battery
charger with all the same features as (FM121).
Push Button Control (FM132)
Unlit doorbell button for remote entry or exit control. Wires directly to the control board and uses 16
gauge multi-stranded, dual conductor low voltage wire (sold separately).
Pin Lock (FM133)
The Pin Lock substitutes for the clevis pin at the front end of the Mighty Mule® gate operators.
Helps prevent theft of the operator from the gate, while allowing quick release of the operator.
Key Chain Mini Transmitter (FM134)
The Key Chain Mini Transmitter is a miniature version of the Mighty Mule® entry transmitter and
has the same adjustable code settings. 12 Volt battery included.
Single Button Transmitter (FM135)
The Mighty Mule® entry transmitter, with adjustable code settings, is standard equipment with all
Mighty Mule® systems. 9 Volt battery included.
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Digital Keypad (FM137)
The specially designed digital keypad can be easily installed as a wireless or wired keypad. It can be
programmed to use up to 25 different personal identification number (PIN) codes. Each code is face
programmable with additional security features built in. Wired installations require 16 gauge, low
voltage, multi-stranded, dual conductor, direct burial wire (sold separately). Requires 3 AA batteries
(not included).
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Mounting Post (FM100) - In Ground
This black powder coated pedestal is designed to provide convenient access to your keypad, wireless
intercom, or other access control device from your vehicle. With its break down design it is easy to
install and works well in most standard applications. Surface Mount Flanges (F102) and Extensions
(F103) for added height are available.
Gate Opening Sensor (FM138)
The Mighty Mule® Gate Opening Sensor is designed for residential and agricultural applications and
is compatible with all Mighty Mule® automatic gate operator models. The wand is an electromagnetic sensor, which offers 'hands free' operation of the Mighty Mule® Gate Operators with a 12 ft.
radius of detection of vehicles in motion.
IC
MAT
AUTO LOCK
GATE
Automatic Gate Lock Pull-to-Open (FM143)
A MUST for added security. Solenoid driven, with a steel housing. Unlocks and locks automatically
as gates open and close. Used with Mighty Mule® DC swing gate operating systems for maximum
stability and security. Comes with a keyed manual release. Recommended for gates over 8 ft. long.
Ideal for animal enclosures or high wind areas.
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Accessories are Available From Your Retail Store (con't)
Wireless Entry Intercom / Keypad (FM136)
Allows owner to screen guest at the gate before allowing access to the property. Keypad also allows owner
to give up to 25 programmable entry codes to family, friends or approved delivery personnel. Codes can be
permanent of temporary. Can be wireless up to 500 feet or hard wired up to 1000 feet. Additional base stations
available (F3101MBC).
Replacement Battery (FM150)
Standard 12 volt, 7.0 amp-hour, maintenance-free battery for the Mighty Mule® FM500 & FM502 gate
operator systems. This is the only battery approved for use with the Mighty Mule® FM500 & FM502 gate
operator systems. Life expectancy is 3-5 years.
Low Voltage Wire (RB509)
The 16 gauge, multi-stranded, dual conductor Low Voltage Wire is for connecting the AC powered
transformer, or the Solar Panel to the control board. Also used for the connection of accessories, such as locks,
keypads, push buttons and other wired control devices. This specially designed wire is UV treated, PVC coated
and ready for direct burial. Available in 50, 100, 250, 500 and 1000 foot rolls.
11" Push to Open Bracket (FM148)
Required when Mighty Mule® 500/502 gate operator(s) must push the gate open, such as on a sloping driveway or
where space prevents gate(s) from opening inward (pulled open). Order two PTO brackets for conversion of a dual
swing gate installation.
Column Mount Lock Receiver (433IH)
For mounting the Automatic Gate Lock on brick columns, walls, or for other applications with limited space
between gate and post.
Replacement Transformer (RB570)
Standard 18 volt, 2200 mA, AC transformer for maintaining the battery included with the Mighty Mule®
gate operator. This is the only transformer approved for use with all UL325 Mighty Mule® gate operator systems.
Garage Door Receiver (RB709U)
The Garage Door Receiver allows you to use the same Mighty Mule® entry transmitter (see Dual Transmitter) to
operate your gate operator and your garage door operator. Compatible with most garage door operators.
If you have a question about any special order item,
just call 1-800-543-GATE!
The contents of all material available on this installation manual are copyrighted by GTO, Inc. (“GTO”), unless otherwise indicated. All rights are reserved by GTO, and content may not be reproduced, downloaded, disseminated, published, or transferred in any form or by any means, except with the prior, written permission of GTO. Any reprinting of GTO publications is by permission only. Copyright infringement is a violation of federal law.
Mighty Mule¨, E-Z Gate¨, GTO¨, are registered trademarks of GTO, Inc. America’s DIY Automatic Gate Openers is a trademark of GTO, Inc. and are the exclusive property of GTO, Inc. (“GTO”).
All rights are reserved by GTO, and these marks may not be used, in any for without the prior, written permission of GTO.
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