Page 1
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.
WARNING
!
MOVING GATE
Can Cause Injury or Death
UL325 SERIES
50
2
®
E-Z GATE OPENER
1-800-543-GATE (4283) • www.mightymule.com
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.
WARNING
!
MOVING GATE
Can Cause Injury or Death
UL325 SERIES
50
2
®
E-Z GATE OPENER
1-800-543-GATE (4283) • www.mightymule.com
UL325 SERIES
502
®
E-Z GATE OPENER
DUAL GATE SYSTEM
©
2002 GTO, Inc.
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 profi ts 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 Hartsfi eld Road • Tallahassee, Florida, USA 32303
Telephone GTO Sales: 1-800-543-GATE (4283) or (850) 575-0176 • Fax (850) 575-8912
or GTO Technical Service: 1-800-543-1236 or (850) 575-4144 • Fax (850)575-8950
www.mightymule.com
L
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Page 2
VEHICULAR GATE OPENER CLASS CATEGORIES
Residential Vehicular Gate Opener-Class I
hotel, garages, retail store, or other building servicing the general public.
use in an industrial location or building such as a factory or loading dock area or other locations not intended to
____________________
____________________
Remember to keep all receipts for
proof of purchase.
kilograms 2.2046 pounds lb. (or #)
pounds 0.4535 kilograms kg
Page 3
-------------------------------------------------------------
--------------------------------------------------
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
--------------------------------------------------------------------------
Parts List
---------------------------------------------------------------------------------
page 8
Technical Specifi cations
page 10
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
--------------------------------------------------------------
Solar Chart
page 21
Connecting the Transformer
-----------------------------------------------------------
page 21
----------------------------------------------------------
Obstruction Sensitivity
-----------------------------------------------------------------
page 25
Main DIP Switches
page 26
Dual Mode DIP Switches
--------------------------------------------------------------
page 27
Setting Closed Position Limits
--------------------------------------------------------
page 28
-------------------------------------
----------------------------------------
----------------------------------------------------------
Setting Open Position Limits
----------------------------------------------------------
page 33
--------------------------------------
--------------------------------------------------
Accessory Catalog
----------------------------------------------------------------
Table of Contents
KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE
Page 4
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
Mighty Mule® E-Z Gate® Opener
Mighty Mule® E-Z Gate® Opener
pull-to-open dual leaf gate
the property). By purchasing an
Mighty Mule® E-Z Gate® Opener
from the property). The gate must not exceed 18 feet in length and
on page 10). The
Mighty Mule® E-Z Gate® Opener
can be used on vinyl, aluminum, chain
high resistance to the wind. If the wind is strong enough, the opener will obstruct and stop.
Mighty Mule® E-Z Gate® Opener
accommodates extra transmitters, digital keypads, solar panels, push buttons,
Mighty Mule®
Accessory Catalog
Mighty Mule® E-Z Gate® Opener
features
adjustable obstruction sensing.
MIN
is the factory setting;
Mighty Mule® E-Z Gate® Opener
also has an
adjustable auto-close feature
button at any time after the gate opens fully will cause it to close immediately.
Swing gates longer than 18 feet or weighing more than 850 pounds;
Slide gates;
Heavy duty or commercial uses;
Professional installation;
please call GTO at
(850) 575-0176
for information about our
professional
dealer near you.
E-Z GATE OPENERS
®
®
carefully and completely
to become familiar with all parts and installation steps. The video tape is only designed as
Page 5
Keep in mind that the gate opener is just
one component of the total gate operating system
that can result in damage to the opener or its components, serious
only
part
of the total gate operating system, it is the responsibility of the
Substitute a
Pin Lock
for the clevis pin on the front
the opener from the gate (
Clevis Pin
Hairpin Clip
Gate Bracket
Front or Rear Mount
Bushing
Page 6
1.
Failure to meet the requirements set forth in the instruction
2. When designing a system that will be entered from a highway or main thoroughfare, make sure the system is placed
3. The gate must be installed in a location that provides adequate clearance between it and adjacent structures when
open into public access areas.
4. The gate and gate opener 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
3. Review the operation of the system to become familiar with its safety features. Understand how to disconnect the
4. This gate opener is intended for
use (
5. Always keep people and objects away from the gate and its area of travel.
6. Pay close attention to the diagram below and be aware of these areas at all times.
Gate in the
Open Position
Gate in the
Open Position
ZONE 2
ZONE 3
ZONE
4
ZONE
5
Driveway
ZONE 1
ZONE 2
ZONE 4
ZONE 5
ZONE 3
Page 7
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 or post.
1. Install the gate opener on the inside of the property and fence line.
DO NOT
install an opener on the outside of the
2. Be careful with moving parts and avoid close proximity to areas where fi ngers or hands could be pinched.
3. Devices such as contact sensors (safety edges) and non contact sensors (photo beams) provide additional protection
4. If push buttons or key switches are installed, they should be within sight of the gate, yet located at least 10 feet from
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.
Moving Gate
Area
Moving Gate
Area
Driveway
10'10'
10'10'
10'10'
NEVER INSTALL
any control device
within gray area
Page 8
1. Attach the
(
your responsibility
to post warning signs on both sides of your gate. If any of these signs or warning decals become
2. The gate is automatic and could move at any time, posing a serious risk of entrapment. No one should be in contact
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
remote controls away from children and unauthorized users; store controls where children and unauthorized users do
6.
7. Service the gate and gate opener regularly. Grease hinges, and replace the battery every 3-5 years.
8. To operate this equipment safely, YOU must know how to disconnect the opener for manual gate operation
(
9. Disconnect the opener
when the power is
and the gate is
moving.
10. Make arrangements with local fi re and law enforcement for emergency access.
11. Distribute and discuss copies of the
section of this manual with all
persons authorized to use your gate.
12.
Should you lose or misplace this manual, a copy can be obtained by
Page 9
Secondary Means of Protection Against
As specifi ed by Gate Operator Safety Standard, UL 325 (30A.1.1), automatic gate openers shall have an inherent entrapment
provisions for
primary
type of entrapment protection. Also, the Mighty Mule® has
provisions for
the connection of
protection to be used
secondary
type of entrapment protection, if desired.
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.
twice
while opening or closing. This alarm will sound for a period of
keypads will not deactivate the alarm.
Bottom Edge Contact Sensor
on both sides of the gate
Leading Edge Contact Sensor
on both sides of the gate
Post Edge Contact Sensor
on both sides of the gate
Post Edge Contact Sensor
on both sides of the gate
Vehicular GateVehicular Gate
500
UL325 SERIES
®
E-Z GATE OPENER
1-800-543-GATE (4283)
www.mightymule.com
Page 10
may not be sensitive enough
to prevent bodily injury
in
some circumstances
reverse gate direction upon sensing an obstruction, are suggested for enhanced protection against entrapment.
Warning Signs
be installed on both sides of the
alert people of automatic gate operation and are
when installing the Mighty Mule® E-Z Gate®
recommend using the
(
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.
Moving Gate Can Cause
Injury Or Death
WARNING
!
Warning SignWarning Sign
Contact Sensor
(
recommended, not included
)
Contact Sensor
(
recommended, not included
)
Pedestrian Gate
Bulldog
Pedestrian
Gate L
ock
(recommended, not included
)
Vehicular GateVehicular Gate
Contact Sensor
(
recommended, not included
)
Contact Sensor
(
recommended, not included
)
Page 11
!
Warning signs (2 enclosed) to be installed on each side
of the gate (3—5 feet above the bottom of the gate)
Maximum Gate: 500 lb. (226.7 kg); 16 ft. (4.8 m)
Voltage: 12 Vdc; Frequency: 0 Hz; Power: 25
W
Class I, II, III and IV Vehicular Swing Gate Operator.
Serial Number: XXXXXXXXXX
#xxxxxxx
Conforms to UL 325 STANDARDS
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.
DC SWING SERIES / 500
GTO, Inc. Tallahassee, Florida USA
Disconnect operator ONLY when the control box power
switch is OFF and the gate is NOT moving.
L
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50
2
UL325 SERIES
®
®
E-Z GATE OPENER
Product identification and manual operation instruction
label (1) installed on control box cover
Logo and warning labels (2) installed on each side of
opener housing
C
Page 12
®
E-Z GATE OPENER
1. KEEP CLEAR
! Ga
t
e
may move at any
t
ime.
2. Do n
ot allow children
to operate gate
or play in gate ar
ea.
3. This gat
e is for vehicles on
ly. Pedestrians must
use separat
e entrance.
WARNING
!
MOVING GATE
Can Cause In
jury or Death
UL325 SERIES
502
®
E-Z GATE OPENER
1-800-543-GATE
(4283) • www.mightymule.com
1. KEEP CLEAR!
Gate may move at
any time.
2. Do n
ot allow children to o
perate gate or play i
n
gate
area.
3. This gate
is
for v
ehicles only
. Pedestrians mus
t
use s
eparate entrance.
WARNING
!
MOVING GATE
Can Cause Injur
y or Death
UL325 SERIES
502
®
E-Z GATE OP
ENER
1-800-5
43-GATE (4283) •
www
.mightymul
e.com
Page 13
///
/
/
Transformer (1)
Battery (1)
Control Box (1)
Wa
rning Signs (4)
GT
O Transmitter(1)
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.
Moving Gate Can Cause
Injury Or Death
WARNING
!
Receiver (1)
Accessory Catalog
page 39):
the transformer power supply and the control box. See
on page 21, and the
Accessory Catalog
power to trickle charge the battery. See the
Accessory Catalog
to mount the front of the
Page 14
DRIVE
NOTE: The transformer should not be
directly
with higher ampere rated fuses; doing so will void your warranty and may damage your control board.
/
/
GTO
microprocessor-based control board is set for single leaf, pull-to-open gate installations. DIP switches can be
/
4
tion of gate and installation.
MIGHTY MULE® 502 E-Z GATE® OPENER
"NR" indicates this
Mighty Mule 502.
page 19
or call
(800) 543-1236
or
for more information.
Gate Weight
Gate Length
Number of Cycles Per Day
Mighty Mule 502 Gate Capacity /Cycle Chart
Estimated number of daily cycles, based on use with a transformer and one(1) 12 Volt battery.
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’
63
68
73
78
83
88
93
98
103
10’
63
68
73
78
83
88
93
98
12’
63
68
73
78
83
88
93
14’
63
68
73
78
83
88
16’
NR
NR
NR
NR
NR
63
68
73
78
83
18’
NR
NR
NR
NR
NR
NR
NR
NR
NR
NR
NR = NOT RECOMMENDED
Page 15
be plumb, level, and swing freely on
their hinges. Wheels must not be attached to the gates.
Note that gates
fi ttings.
of the gates to keep the gates
(if they are not already in
place) to provide a stable area for mounting the gate
brackets is also important.
if you intend
to mount the openers on columns. Furthermore, if you have push-to-open gates, you will need to purchase two (2)
(see
Accessory Catalog
before proceeding.
Horizontal Cross Member
Vertical Cross Member
Gate Swings Evenly and Freely
Hung Firmly and Plumb
Receiver
PVC conduit (not included)
to protect second opener
power cable and low voltage wire
from lawn mowers and weed eaters.
Post Bracket Assembly
Control Box with Battery
Gate Bracket
First Gate Opener
Concrete Poured
Around Gate Post
Run 1000' (max.) of low
voltage wire to control
box from transformer
(wire not included).
4 1/2' Power Cable
Closed Position Positive Stop Plates
120 Volt Indoor
Transformer
(surge protector
not supplied)
Second Gate Opener
5
0
0
U
L
3
2
5
S
E
R
I
E
S
®
E
-Z
G
A
T
E
O
P
E
N
E
R
L
I
S
T
E
D
U
S
5
0
0
U
L
3
2
5
S
E
R
I
E
S
®
E
-
Z
G
A
T
E
O
P
E
N
E
R
L
I
S
T
E
D
U
S
500
UL325 SERIES
®
E-Z GATE OPENER
1-800-543-GATE (4283)
www.mightymule.com
Page 16
not supplied
post to prevent the thrust of the opener from
pulling the bolts and washers out of the wood.
brackets are mounted by themselves.
Post
Bracket
Post
Pivot Bracket
Metal Plate
Wooden Post
Post
Bracket
Post
Pivot Bracket
Metal Plate
Wooden Post
Center of Gate Hinge
Pull-to-Open Installation
Larger than 6" diameter post
Thin Walled Tube Gate
Steel Pipe Cut in Half
Gate Bracket
Gate Bracket
Wood or Metal
Reinforcement
Gate Bracket
Panel Gate
1" x 6" Wood Reinforcement
(not supplied)
(not supplied)
We
using steel pipe, wood or metal to reinforce thin walled tube gates or wood to reinforce panel gates
Page 17
Level Opener
Fence Post
Gate In Open Position
LEVEL horizontal cross member
Post Bracket Assembly
Gate Bracket
Clevis Pin
Hairpin Clip
Post Bracket Assembly
Rear Mount
Opener
Bushing
Clevis Pin
Hairpin Clip
Bushing
Gate Bracket
Front Mount
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.
/
the center hole of the post
brackets and post pivot bracket
/
/
/
the nut because the
post pivot bracket will have to be
hairpin clips.
3/8" x 2" Bolt
3/8" Nut
Post Pivot Bracket
Post Bracket
Post Bracket
3/8" Lock Washer
Post Bracket Assembly
3/8" Washer
gate
your
push-to-
(
two
Accessory
beginning on
page 32.
Page 18
Gate in the
CLOSED POSITION
Pinch Area
Gate in the
OPENED POSITION
Pinch Area
2" minimum
2" minimum
Be sure gate opener
and bracket don't bind.
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
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.
While determining the mounting point for the post pivot bracket assembly, be sure that the position allows
Page 19
Mark reference points for bolt holes on the fence post through middle of bracket slots. Marking reference points in this
reference points, remove the
/
Fasten post bracket assembly to
the fence post using
/
provided
bolt length extending beyond
the tightened nuts with a
hacksaw or bolt cutters.
In cases where the
than 6",
not supplied
Mark reference points for bolt holes on
the gate cross member through middle of
/
the gate cross member as marked.
Mount gate bracket using (2)
/
provided
Gate In Open Position
LEVEL horizontal cross member
Mark cross member through middle of
gate bracket slots and drill 3/8" holes
Post Bracket
Assembly
Mark fence post through
middle of bracket slots
and drill 3/8" holes
Round Metal Post
Round Wood Post
Square Metal Pos
t
Square Wood Pos
t
Remove excess bolt length
with hacksaw or bolt cutters
SIDE VIEW
TOP VIEW
EXAMPLES
Round Tube & Chain Link Gate
Square Tube Gate
Mounting Plate
Created for
Decorative Gate
(required but not
supplied)
Remove excess bolt length
with hacksaw or bolt cutters
FRONT VIEW
SIDE VIE
W
FRONT VIEW
SIDE VIEW
Page 20
Mounting the First Opener
Accessory Catalog
Level Opener
Gate In Open Position
LEVEL horizontal cross member
Post Bracket Assembly
bolted to fence post
Clevis Pin, Bushing, and Hairpin Clip
Clevis Pin, Bushing, and Hairpin Clip
Gate Bracket bolted
to gate cross member
Fence Post
through
Page 21
Closed Position
Stop Plates
Gate Hinge
CONTROL BOX
Gate Hinge
The gate leaf can open
up to 110˚ (max.)
Optional Ground Stop
(beneath gate)
The gate leaf can open
up to 110˚ (max.)
MASTER GATE SLAVE GATE
Mighty Mule® Automatic Gate Lock
Accessory Catalog
MASTER
gate and
box will be referred to as the
gate and
Closed Position Stop Plate mounted
horizontally on metal post with U-bolts.
SLAVE Gate Frame
MASTER Gate Frame
TOP VIEW
FRONT VIEW
MASTER gate leaf.
Illustration A
tube or chain link; screw or bolts for wood or metal)
closed position stop plate
(
Do not
tighten
Illustration
position, tighten its hardware completely.
Illustration B
Page 22
At this stage of the installation, the openers should be installed on the
Post Bracket Assembly
Gate Bracket
MASTER Gate Opener
Closed Position
Positive Stop Plates
SLAVE Gate Opener
OPTIONAL Closed Position
Ground Stop Post
Using appropriate hardware for your type of gate attach the
closed position stop plate
to the SLAVE gate frame
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
For a push-to-open installation (gate opens
from the property) attach the closed position stop plate to the
not
provided
Illustration A
and may be made of metal
recommend setting it in concrete).
Closed Position Stop Plate mounted
on the gate leaf that CLOSES FIRST
Closed Position Stop Plate
Low Profile Ground Stop
in Near the Center of Driveway
FRONT VIEW
SIDE VIEW
Mount Vertically
Page 23
Make sure the control box power switch is in the
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
battery wire to the
(
battery
(
Pay close attention to
Mounting the Control Box
/16" of insulation from each
tightly (there are seven [7] wires inside the power cable
bottom of control box. Insert power cable into control
box through strain relief. Thread approximately 6"
Mount the control box using the screws (
provided
to protect it from rain splash,
RED wire to POSITIVE (+) terminal
BLACK wire to NEGATIVE (–) terminal
RED
BLACK
Operator Power Cable
Strain Relief
Battery wires
for optional
second battery
12 Volt Battery
(included)
Space for optional
second 12 Volt Battery
(see Accessory Catalog)
Sealing Nut
Hub
Lock Nut
Strain Relief
Use mounting
holes and screws
provided to mount
control box to a
secure surface.
The battery that came with your Mighty
Mule®,
MUST
be placed in the top (horizontal)
battery slot with the terminals on the
battery. An optional second battery can be used for
Page 24
Power Cable from the
Master Operatorr Arm
RECEIVER
SWITCH
MASTER INPUTS
GRN WHT BLUE BRN ORG RED BLK COM COM
CYCLE
CLOSE
SAFETY
EXIT/
OPEN
SHADOW
LOOP
CLOSE
EDGE
OPEN
EDGE
BLKGRN RED
STALL FORCE
M
I
N
M
A
X
terminals on the
MASTER
terminal, the
blue wire into
terminal.
Correct
Wrong Wrong
Wire
Terminal
Block
Terminal
Block
Terminal
Block
Wire Wire
MASTER Operator
/16" of insulation from each wire
tightly. Insert the second opener power cable upward
through the
(if necessary, loosen the
black sheath
place.
block. The green wire should be inserted into the
terminal, the blue wire into
terminal.
illustration on
page 11
before proceeding.
not provided
SLAVE Operator
SWITCH
RELAY OUT SLAVE INPUTS
GRN WHT BLUE BRN ORG RED BLKNC RLY-COM NO
MASTER INPUTS
GRN WHT BLUE BRN ORG RED BLK COM COM
Power Cable from the
Slave Operator Ar
m
Page 25
• The transformer is designed and intended for
use. If the transformer can be plugged only into
be used.
• All low voltage wire used with the Mighty Mule
Gate Opener must be 16 gauge dual conductor,
multi-stranded, direct burial wire (
and the
Accessory Catalog
Do not run more than
• If your gate is more than 1000 ft. from an ac power source, you will need to use at least one 5 watt
Accessory Catalog
Activity
Make sure the power switch is
before proceeding to the next step.
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
ON/OFF Switch
the maximum number of
using from 10 to 30 watts of
Accessory Catalog
the use of any accessory items.
Accessories
power from the battery.
Mighty Mule® Gate Opener. Consult
Panel
Installation Instructions for further
Winter Ratings Zone 1 Zone 2 Zone 3
Page 26
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
blades, weed eaters, and grazing animals. Be sure to bury the wire laid in the
trench.
Feed the low voltage wires upward through the strain relief opening on the
tighten the strain relief screw to secure the wires.
use telephone wire or solid core wire. Unlike multi-stranded wire, these types of wire are
/
terminals located on the
terminal block
terminal.
terminal. The transformer wires can be
18VAC
terminals regardless of color.
help prevent corrosion.
RED
BLACK
RED
BLACK
Low Voltage Wire
from AC Transformer
18VAC
SWITCH
SOLAR RELAY OUT SLAVE INPUTS
GRN WHT BLUE BRN ORG RED BLKNC RLY-COM NO
MASTER INPUTS
GRN WHT BLUE BRN ORG RED BLK
+–~~
Low Voltage Wire
from Transformer
Power Cable from
Opener Arm
PVC Pipe
BE PLUGGED INTO
AN OUTLET
DURING STEP 7
Page 27
recommended.)
Keep a few mothballs in the control box to
/
terminals.
A dab of household petroleum jelly on each terminal will
help prevent corrosion.
Make sure the exposed wires do not touch each other!
SURGE PROTECTOR
Transformer
Page 28
1ON2 3 4 5 6 7
ON
OFF
1 2 3 4 5 6 7
DIP#6 DIP#7 Delay Time for Auto-Close
ON ON 15 seconds
ON OFF 30 seconds
OFF ON 60 seconds
OFF* OFF* 120 seconds (factory preset)
DIP#5
ON
D1 mode, constant pressure to operate gate.
OFF*
B2 mode, momentary contact to operate gate.
DIP#4
ON Push-to-open operation.
OFF* Pull-to-open operation.
DIP#3
ON Auto-close enabled.
OFF* Auto-close disabled.
DIP#2
ON* Buzzer warning enabled.
OFF Buzzer warning disabled
DIP#1
ON* Soft start enabled.
OFF Soft start disabled.
* Factory preset.
DIP Switch #1 - Soft Start/Stop
The Soft Start/Stop feature slowly starts the gate as
the closed position. This saves wear and tear on the
DIP Switch #2 - Warning Buzzer
The Warning Buzzer alerts you when the gate
two times in one cycle. Switching this to OFF
DIP Switch #3 - Auto-Close
With the Auto-Close switch in the OFF position
the gate will remain open until it receives another
transmitter, keypad, or push button control. With
the Auto-Close switch in the ON position the gate
remain open is determined using DIP Switches #6
DIP Switch #4 - Push/Pull-to-Open
If your gate opens into the property the DIP Switch
the property the DIP Switch must be set to the ON
position. NOTE: if you have a Push-to-Open gate
DIP Switch #5 - B2/D1 Mode
This DIP Switch must remain in the OFF position
unless the gate opener is going to be used by a
DIP Switches #6 and #7
The combination of these two switches determines
the amount of time the gate will remain open when
Leave DIP Switch #3 in the OFF position untill installation is complete, to prevent gate from
IMPORTANT CONTROL BOARD SETTINGS:
CONTROL BOARD DIP SWITCH #1 is factory
preset in the ON position and MUST remain in the
ON position. Changing this setting can damage
your gate, gate opener and
possibly void your warranty!
Page 29
1
ON
2 3 4
DUAL
MODES
ON
OFF
1 2 3 4
1
ON
2 3
4
DUAL
MODES
ON
OFF
1 2 3 4
1
ON
2 3 4
DUAL
MODES
ON
OFF
1 2 3 4
1
ON
2 3 4
DUAL
MODES
ON
OFF
1 2 3 4
1
ON
2 3
4
DUAL
MODES
ON
OFF
1 2 3 4
1
ON
2 3 4
DUAL
MODE
S
ON
OFF
1 2 3 4
ON
6 7
SET
LIMIT
ON
OF
F
1 2 3 4 5 6 7
Set Limit Button
Dual Mode DIP Switches
Factory setting.
Single Arm (Master
Only) operation.
MASTER gate starts to open 2 seconds
before SLAVE gate / SLAVE gate starts to
close 4 seconds before MASTER gate.
MASTER gate starts to open 2 seconds
before SLAVE gate / SLAVE gate starts to
close 8 seconds before MASTER gate.
MASTER and SLAVE gates open
simultaneously / SLAVE gate starts to close 4
seconds before MASTER gate.
MASTER and SLAVE gates open
simultaneously / SLAVE gate starts to close 8
seconds before MASTER gate.
1
ON
2 3 4
DUAL
MODES
ON
OFF
1 2 3 4
1ON2 3 4
DUAL
MODES
ON
OFF
1 2 3 4
#1 OFF & #2 OFF
#1 ON , #2 OFF
and #3 OFF
#1 ON, #2 OFF
and #3 ON
#1 OFF, #2 ON
and #3 ON
#1 OFF, #2 ON
and #3 OFF
*
REQUIRED SETTING for use with an Automatic Gate Lock accessory.
*
#4 OFF to set or CLEAR
MASTER Position Limit
#4 ON to set or CLEAR
SLAVE Position Limit
DIP Switches #1 and #2 (Factory Set OFF/OFF)
DIP Switch #3 - Additional Delay (Factory Set OFF)
DIP Switch #4 - Used to set MASTER and SLAVE gate closed
#4 ON =
#4 OFF =
Page 30
Setting the Closed Position Limits
(Gate in the OPEN POSITION / FACTORY SET NOT ADJUSTABLE) The open limit setting is
the fully open position.
(Gate in the CLOSED POSITION) To achieve optimum closed position, you are required
to complete the following SEVEN STEPS:
positions toward their closing position. Prepare to STOP gate that reaches the desired closed position fi rst by pressing the
position has been achieved, proceed to step 3.
With the gate that closed fi rst in the desired closed position, program the closed limit setting by setting the number 4 DIP
positions toward their closing position. The fi rst gate will stop at the spot you just programmed and the second gate will
With the second gate in the desired closed position. Program the
then PRESS & HOLD the “SET LIMIT" button on the control
board for 5 seconds.
1
ON
2 3 4
DUAL
MODES
ON
OFF
1 2 3 4
ON
6 7
SET
LIMIT
ON
OFF
1 2 3 4 5 6 7
Set Limit Button
Dual Mode DIP Switches
Page 31
1
2
3 4 5
6 7 8
9
EC
E
A23S 12V
ALKALINE BA
TTER
Y
+
0
–
LE
D
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
positions, then press and hold the "SET LIMIT" button for 10 seconds. This will clear the memory for the closed limit
positions. Follow Steps 1-7 again.
LEARN TRANSMITTER
button on
the control board for 5 seconds.
button.
is stored in control board memory.
1
ON
2 3 4 5 6 7
1
ON
2 3 4
RECEIVER
DUAL
MODES
SET
LIMIT
LEARN
TRANSMIT
TER
MODES
ON
OFF
ON
OFF
1 2 3 4 5 6 7
1 2 3
4
COM
CYCLE
CLOSE
SAFETY
EXIT/
OPEN
SHADOW
LOOP
CLOSE
EDGE
OPEN
EDGE
BLKGRN RED
Learn Transmitter Button
STALL FORCE
M
I
N
M
A
X
positions (
0
DO NOT
set all the switches in the same position, such as all
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.
+
0
ECE
1 2 3 4 5 6 7 8 9
Page 32
before permanently mounting it
external interference.
FCC Regulation
NOTE:
unauthorized modifi cations to this equipment. Such modifi cations could void the
user’s authority to operate the equipment.
ALWAYS KEEP
AT THE TOP OF YOUR LIST WHEN ADJUSTING OR
STALL FORCE
M
I
N
M
A
X
For safety reasons the obstruction setting or
on
(mini-
potentiometer on the control board operates like a volume
row in the center of the potentiometer. Adjust
Page 33
properly,
may not be sensitive enough
to prevent bodily injury in some circumstances
recommends
using some form of additional safety device.
When installed, contact sensors must be
Refer to the sensor manufacturer’s instructions for information about installing these devices on a vehicular gate.
Contact sensors are not
included with
the Mighty Mule® 502.
to the
terminal and the other to
the
terminal on the Mighty Mule® 502
to the
terminal and the other to the
terminal on the Mighty Mule® 502
Activation of a contact sensor while the gate is in motion
Although GTO strongly recommends the use of additional safety devices, we do not endorse any
Wire from Contact Sensor
(open safety edge)
Wire from Contact Sensor
(close safety edge)
RECEIVER
COM COM
CYCLE
CLOSE
SAFETY
EXIT/
OPEN
SHADOW
LOOP
CLOSE
EDGE
OPEN
EDGE
BLKGRN RED
STALL FORCE
M
I
N
M
A
X
Page 34
Refer to the sensor manufacturer’s instructions for information
about installing these devices on a vehicular gate.
the
terminal and the other to the
terminal on the Mighty Mule® 502 control board.
Non-contact sensors are not
included with
the Mighty Mule® 502.
Wire from Non-Contact
Sensor (photo beam)
RECEIVER
COM COM
CYCLE
CLOSE
SAFETY
EXIT/
OPEN
SHADOW
LOOP
CLOSE
EDGE
OPEN
EDGE
BLKGRN RED
STALL FORCE
M
I
N
M
A
X
Shadow Loop
Wire from Shadow Loop
RECEIVER
COM COM
CYCLE
CLOSE
SAFETY
EXIT/
OPEN
SHADOW
LOOP
CLOSE
EDGE
OPEN
EDGE
BLKGRN RED
STALL FORCE
M
I
N
M
A
X
Refer to the sensor manufacturer’s instructions for information
about installing these devices on a vehicular gate.
terminal and the other to the
terminal on the
Mighty Mule® 502 control board.
is a detector located with the moving path
the path.
Non-contact sensors are not
included with
the Mighty Mule® 502.
Page 35
Refer to the sensor manufacturer’s instructions for information about installing these devices on a vehicular gate.
Accessory Input Connection:
terminal and the other to the
terminal on the
Mighty Mule® 502 control board.
OPEN STOP CLOSE STOP
Wire from Accessory
(push button, key pad, etc.)
RECEIVER
COM COM
CYCLE
CLOSE
SAFETY
EXIT/
OPEN
SHADOW
LOOP
CLOSE
EDGE
OPEN
EDGE
BLKGRN RED
STALL FORCE
M
I
N
M
A
X
Page 36
Gate in the Closed Position
Pinch Area (gray)
Gate in the Open Position
Pinch Area (gray)
2" minimum
2" minimum
With the gates
bracket until the opener is level. While holding the opener level, use
bracket in their respective positions on the fence post and gate.
from the property.
A Push-to-Open Bracket is required for this type of installation
(
Accessory Catalog
the
property), return to page 13; step 3.
position.
3/8" x 2" Bolt
3/8" Nut
Push-To-Open Bracket
(optional accessory)
Post Bracket
Post Bracket
3/8" Lock Washer
Post Bracket Assembly
3/8" Washer
/
/
4
bolt through the aligned holes of the post bracket
/
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
While determining the mounting point for the post
pivot bracket assembly be sure that the position allows for maximum
positions, as shown in the diagrams below. This clearance will give the
Page 37
Operator
Fence Post
Gate Post and Gate Cross Member
(In Closed Position)
POST PIVOT BRACKET level with the
horizontal surface of the GATE BRACKET
LEVEL
LEVEL
LEVEL
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
/
Make sure the control box power switch is
DIP switch from the factory
power switch
push
the gate open.
Setting the Open Position Limit
toward their open position. Prepare to STOP gates by pressing the entry transmitter button again when the fi rst 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.
page 25 for gate sequencing and other programming steps before
proceeding.
1ON2 3 4 5 6 7
ON
OFF
1 2 3 4 5 6 7
DIP#4
ON Push-to-open operation.
OFF Pull-to-open operation (factory setting).
Page 38
With the fi rst gate in the desired open position. Program the open limit setting by setting the number 4 DIP switch on the
LIMIT IS NOW PROGRAMMED.
button. Your gates should now be moving from the closed positions
toward their open positions. The fi rst 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
With the second gate in the desired open position. Program the
then PRESS & HOLD the “SET LIMIT" button on the control
board for 5 seconds.
positions, then press and hold the "SET LIMIT" button for 10 seconds. This will clear the memory for the open limit
positions. Follow steps one (1) to seven (7) again.
1
ON
2 3 4
DUAL
MODES
ON
OFF
1 2 3 4
ON
6 7
SET
LIMIT
ON
OFF
1 2 3 4 5 6 7
Set Limit Button
Dual Mode DIP Switches
Page 39
Maintenance & Troubleshooting Guide
If the Opener Does Not Work
1. Test the transformer for voltage with a voltmeter. The acceptable range can be found in the
transformer 12 hours to charge the battery before using the gate opener.
2. If the transformer test shows voltage, check the
terminal block on the control board for voltage.
1. Check the battery in your transmitter and replace with a fresh one if needed..
2. Verify that the power cable is securely connected.
3. Replace the control board fuse if it is blown (
A HIGHER RATED
1. Make sure the
switch at the bottom of the control box is set to
2. Check all connections for looseness and corrosion.
On all gates weighing 250 lb. or more, routinely grease the ball bearing hinges at least 4 times a year; more
frequently if the gates are near a coastal area.
•
Keeping a few mothballs in the control box will discourage insects from entering it and damaging the control
board.
•
Clean the push-pull tube with a soft, dry cloth and apply silicone spray to it at least once per month.
While oxidation is a normal part of weathering of equipment that is exposed to the elements, we recommend
you apply silicone spray the front and rear mounts to minimize this effect.
Page 40
is open
– 5:30
(Eastern Time)
is open
is open
If the Opener is Working
___________________________
_______________________
measure voltage at panel and control box.
________________________________
_____________________________
measure voltage with battery connected
1. Check the position of the mounting brackets and readjust if necessary.
2. Check the gate for binding or hinge damage.
1. Check the position of the mounting brackets and readjust if necessary.
2. Check the gate for binding or hinge damage.
Page 41
Gate Opener is not operating properly, please follow the steps below:
Maintenance & Troubleshooting Guide
(
Refer to the serial number (located on the control box cover) and date of purchase when calling for assistance.
Authorization (RGA) number
to you for warranty repair.
4. Securely pack the component(s) authorized for return to the factory. Write the RGA number issued to you on the outside
of the package in
be accepted. Also, items returned to GTO freight
be accepted.
Page 42
MASONRY, BRICK, OR ROCK (etc.) COLUMNS:
PROCEEDING
back corner of the columns.
job is
for the inexperienced!
Column
Pivot Bracket
Gate
A
B
Column Mount Example
(A + B can not exceed 14 inches)
Example: If A is 2" then B can not exceed 12"
Hinge
Page 43
Not Compatible with Mighty Mule® 250
is a 5 watt solar powered battery charger for use with the
FM500 & FM502
gate opener systems.
comes with tubular steel support, mounting clips, wire
Mighty Mule®
has clearly labeled terminal connections for easy installation of the
Unlit doorbell button for remote entry or exit control. Wires directly to the control board and uses 16 gauge multi-
substitutes for the clevis pin at the front end of the Mighty Mule® gate openers. Helps prevent theft of
the opener from the gate, while allowing quick release of the opener.
Mighty Mule®
entry transmitter and has the same
Mighty Mule®
entry transmitter, with adjustable code settings, is standard equipment with all
Mighty Mule®
use up to 25 different personal identifi cation number (PIN) codes. Each code is face programmable with additional
burial wire (sold separately). Requires 3 AA batteries (not included).
Not Compatible with Mighty Mule® 250
Mule® automatic gate opener models (see Sensor Box for model compatibility). The Sensor is an electromagnetic
Automatic Gate Lock Pull-to-Open (FM143)
Not Compatible with Mighty Mule® 250
MUST for added security. Solenoid driven with a steel housing. Unlocks and locks automatically as gates open and
Mighty Mule®
system for maximum stability and security. Comes with a keyed manual release.
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
be face mounted or mounted on top of the gate posts.
AUTOMATIC
G
ATE
L
OCK
®
ELECTRO
NIC SEC
URITY
L
OCK
Accessories are Available From Your Retail Store
E-Z GATE OPENERS
®
®
ACCESSORIES
POW
E
R
K
e
y
p
a
d
B
a
t
t Lo
w
Gran
t
Perm
i
ssio
n
An
s
w
er
D
V
9V
A
CC
ES
S CONTR
OL
S
YS
T
E
MS
1-
80
0
-5
4
3
-
4
2
8
3
1
2
ABC
3
DEF
4
GHI
5
JKL
6
MNO
7
PRS
8
TUV
9
WXY
0
Page 44
40
Not Compatible with Mighty Mule® 250
Mighty Mule® FM500 & FM502
gate opener
Mighty Mule® FM500 & FM502
Life expectancy is 3-5 years.
is for connecting the AC powered transformer, or
the
to the control board. Also used for the connection of accessories, such as locks, keypads, push buttons
Available in 1000' rolls or special lengths.
Not Compatible with Mighty Mule® 250
Mighty Mule®
500/502 gate opener(s) must push the gate open, such as on a sloping driveway or
Not Compatible with Mighty Mule® 250
For mounting the
Automatic Gate Lock
on brick columns, walls, or for other applications with limited space
between gate and post.
Mighty Mule®
Mighty Mule®
entry transmitter (see Dual and Triple
HEDDOLF
UNIVERSAL
RECEIVER
MODEL 294
Accessories are Available From Your Retail Store (con't)
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, down-
loaded, 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 infringe-
ment 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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