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14

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.

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.

IMPORTANT

:

While determining the mounting point for the post pivot bracket assembly, be sure that the position allows 

for a minimum of 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 effi cient leverage point for opening and closing the gate and 
more importantly provides the least possible pinch area.

TIP:

Turning the pivot bracket over gives 

Turning the pivot bracket over gives 

more hole alignment options for the post 

more hole alignment options for the post 

pivot bracket assembly. You can also move 

pivot bracket assembly. You can also move 

the entire post pivot bracket assembly to 

the entire post pivot bracket assembly to 

different positions on the gate post to help 

different positions on the gate post to help 

achieve the proper clearances.

Summary of Contents for Mighty Mule 500

Page 1: ...tial 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 installati...

Page 2: ...ccess locations not servicing the general public in which unauthorized access is prevented via supervision by security personnel 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 FOR YOUR RECORDS Please record the product serial number located on the control box cover and the date and place of p...

Page 3: ... Technical Specifications page 10 Installation Overview page 11 Installation of the Mounting Hardware page 12 Mounting the Opener Mounting the Opener Mounting the Opener page 16 Installation of the Closed Position Stop page 16 Mounting the Control Box page 17 Connecting the Power Cable page 18 Powering the System page 19 Solar Chart Solar Chart Solar Chart page 19 Connecting the Transformer Connect...

Page 4: ...ed 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 the enclosed Mighty Mule Accessory Catalog are available at most stores Your store shou...

Page 5: ...dentified 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 part of the total gate operating system it is the responsibility of the part consumer to ensure that the total system is safe for its in...

Page 6: ...ith any applicable local codes I Before Installation 1 Verify this opener is proper for the type and size of gate its frequency of use and the proper class rating 2 Make sure the gate has been properly installed and swings freely in both directions Repair or replace all worn or damaged gate hardware prior to installation A freely moving gate will require less force to operate and will enhance the ...

Page 7: ...ld 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 gat...

Page 8: ...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 3 5 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...

Page 9: ...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 openers 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...

Page 10: ...ic 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 for controlled access 1 KEEP CLEAR Gate may move at any time 2 Do not allow children to operate gate or play in gate area 3 ...

Page 11: ...itch 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 I S T E D US 500 UL325 SERIES E Z GATE OPENER Product identification and manual operation instruction label 1 installed on control box cover Logo and...

Page 12: ...8 Single Gate Opener Parts List Opener and Mounting Hardware E Z GATE OPENER 500 UL32 5 SERI ES E Z GATE OPENER LISTED US ...

Page 13: ...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 ...

Page 14: ...ivity Power terminal block 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 unit encounters an obstruction twice while opening or closing OPERATI...

Page 15: ...nce and single gate Mounting the opener on a masonry column requires special procedures see Column Installation Information on page 36 if you intend on page 36 if you intend on page 36 to mount the opener on a column Furthermore if you have a push to open gate you will need to purchase a push to open bracket see Accessory Catalog to properly configure your system See Push to Open Installation on pa...

Page 16: ...er or 6 square should be made of metal instead of wood so that it will remain stable while the opener is moving the gate 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 Post Bracket Post Pivot Bracket Metal Plate Wooden Post Post Bracket Post Pivot Bracket Metal Plate Wooden Pos...

Page 17: ... 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 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 3 8 x 2 Bolt 3 8 Nut Post Pivot Bracket Post Bracket Post Bracket 3 ...

Page 18: ...cket 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 IMPORTANT While determining the mounting point for the post pivot bracket assembly be sure that the position allows for a minimum of 2 inches of clearance between the gate and the opener in ...

Page 19: ... carriage bolts longer than 8 not supplied must be used 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 Mount gate bracket using 2 3 8 x 3 bolts washers lock washers and nuts provided nuts provided nuts Cut off excess bolt length extending beyond the tightened nuts Gate Bracket Mounting ...

Page 20: ...o support opener Fasten the closed position stop plate to the end of the gate frame on the gate centerline but do not tighten it completely Slide do not tighten it completely Slide do not the stop plate toward the fence post until they touch see illustration Once you have moved the stop plate to the correct position tighten its hardware completely Use the appropriate hardware for your type of gate...

Page 21: ... 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 f...

Page 22: ...screws against the end of the wires A dab of petroleum jelly on each terminal will help prevent corrosion Correct Wrong Wrong Wire Terminal Block Terminal Block Terminal Block Wire Wire Connecting Opener Power Cable Sealing Nut Hub Lock Nut Strain Relief Step 14 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 co...

Page 23: ...battery 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 Winter Ratings Zone 1 Zone 2 Zone 3 12 v single gate 5 watts solar charger 4 8 13 12 v single gate 10 watts solar charger 8 16 26 12 v single gate 15 watts solar charger 11 20 30 12 v single gate 20 watts solar charger 14 2...

Page 24: ...ltage 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 5 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 ...

Page 25: ...ntrol box to discourage insects from entering it and damaging the control board 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 Make sure the exposed wires do not touch each other SURGE PROTECTOR Transformer ...

Page 26: ...ch 3 Auto Close With the Auto Close switch in the OFF position the gate will remain open until it receives another signal from an activation device such as a transmitter keypad or push button control With the Auto Close switch in the ON position the gate opener will automatically close the gate The time the gate will remain open is determined using DIP Switches 6 and 7 DIP Switch 4 Push Pull to Op...

Page 27: ...ition has been achieved proceed to step 3 Step 3 With the gate in the desired closed position PRESS HOLD the SET LIMIT button on the control board for 5 seconds Step 4 Press the transmitter button and allow the gate to return to the fully open position YOUR GATE S CLOSED POSITION LIMIT IS NOW PROGRAMMED TESTING YOUR CLOSED LIMIT SETTING Press your entry transmitter and allow your gate to close If ...

Page 28: ...ight and size of the gates The Stall Force potentiometer on the control board operates like a volume potentiometer on the control board operates like a volume control on a radio It controls the obstruction sensitivity or the amount of 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 ...

Page 29: ...set a new code use a small screwdriver to move the switches 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 strongly recommend that you replace the factory setting with your own personal strongly recommend code F...

Page 30: ...T run cable in conduit containing ac wiring The receiver range can vary from 50 to 100 feet depending upon weather topography and external interference NOTE Do not mount upside down 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 unde...

Page 31: ...opener is turned off before connecting safety device wiring to the terminal blocks Unplugging the transformer does not turn power to the opener OFF Contact Sensor Input Connection 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 500 control board Connect one of the CLOSE EDGE contact sensor wires to the COMMON C...

Page 32: ...rs are not included with Non contact sensors are not the Mighty Mule 500 Wire from Non Contact Sensor photo beam RECEIVER COM COM CYCLE CLOSE SAFETY EXIT OPEN SHADOW LOOP CLOSE EDGE OPEN EDGE BLK GRN RED STALL FORCE M I N M A X Shadow Loop If not installing a shadow loop skip to next section Wire from Shadow Loop RECEIVER COM COM CYCLE CLOSE SAFETY EXIT OPEN SHADOW LOOP CLOSE EDGE OPEN EDGE BLK GR...

Page 33: ...rminal blocks Unplugging the transformer does not turn power to the opener OFF Accessory Input Connection Connect one of the accessory wires to the COMMON COM terminal and the other to the CYCLE CLOSE terminal on the Mighty Mule 500 control board Each activation of the accessory will cause the gate to cycle as follows OPEN STOP CLOSE STOP If not connecting accessories skip to next section Wire fro...

Page 34: ...es of the post bracket bolt through the aligned holes of the post bracket and post pivot bracket and fasten it with the and post pivot bracket and fasten it with the 5 16 washer and nut washer and nut IMPORTANT IMPORTANT If you loosened the clamp on the post bracket to achieve the optimum position the post bracket to achieve the optimum position tighten it in its new position and recheck the gate ...

Page 35: ...o Open to ON for Push To Open Turn power switch ON The control board is now configured to push the gate open Setting the Open Position Limit Step 1 Confirm that the power switch is in the ON position and the gate is in the CLOSED POSITION Step 2 Activate your opener by pressing the entry transmitter button Your gate should now be moving from the closed position toward the open position Prepare to ST...

Page 36: ...d you will need to CLEAR your OPEN LIMIT settings and follow steps one 1 to four 4 again CLEARING PROGRAMMED OPEN LIMIT SETTING If you make a mistake and set the limit at the wrong position press your transmitter to return the gate to the fully closed position then press and hold the SET LIMIT button for 10 seconds This will clear the memory for the open limit position Follow steps one 1 to four 4...

Page 37: ... for broken or spliced wires Check the Red LED on the Control Board IF THE LED IS ON but the unit is not working 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 15 ampere fuse only DO NOT USE A HIGHER RATED FUSE IF THE LED IS OFF 1 Make sure the ON OFF switch at the bo...

Page 38: ...ar 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 Gate CLOSES Then Opens Again on its Own 1 Check the position of the mounting brackets and readjust if necessary 2 Check t...

Page 39: ...onent s authorized for return to the factory 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 GT...

Page 40: ...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 column...

Page 41: ... built in Wired installations require 16 gauge low voltage multi stranded dual conductor direct burial wire sold separately Requires 3 AA batteries not included Gate Opening Sensor FM138 Not Compatible with Mighty Mule 250 The Gate Opening Sensor is designed for residential and agricultural applications and is compatible with most Mighty Mule automatic gate opener models see Sensor Box for model c...

Page 42: ... UNIVERSAL RECEIVER MODEL 294 Replacement Battery FM150 Not Compatible with Mighty Mule 250 Standard 12 volt 7 0 amp hour maintenance free battery for the Mighty Mule FM500 FM502 gate opener systems This is the only battery approved for use with the Mighty Mule FM500 FM502 gate opener systems Life expectancy is 3 5 years Low Voltage Wire RB509 The 16 gauge multi stranded dual conductor Low Voltage...

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