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Mighty Mule FM402 Installation Instructions 

rev 12-14-15

IMPORTANT SAFETY INSTRUCTIONS

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

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 or death, for which the manufacturer cannot be held responsible.

  2.  When designing a system that will be entered from a highway or main thoroughfare, make sure the system is 

placed far enough from the road to prevent traffic congestion.

  3.  The gate must be installed in a location that provides adequate clearance between it and adjacent structures when 

opening and closing to reduce the risk of entrapment. Swinging gates must not open into public access areas.

  4.  The gate and gate opener installation 

must comply with any applicable local codes.

I. Before Installation

  1.  Verify this opener is proper for the type and size of gate, its frequency of use, and the proper class rating.
  2.  Make sure the gate has been properly installed and swings freely in both directions. Repair or replace all worn 

or damaged gate hardware prior to installation. A freely moving gate will require less force to operate and will 

enhance the performance of the opener and safety devices used with the system.

  3.  Review the operation of the system to become familiar with its safety features. Understand how to disconnect the 

opener for manual gate operation (page iii).

  4.  This gate opener is intended for vehicular gates ONLY.  A separate entrance or gate must be installed for 

pedestrian use (page vi).

  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.   

Entrapment Zones for a proper Pull-To-Open installation:

 

Zone 1 – leading edge of the gates. 

 

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, etc. 

 

Zone 5 – pinch points between the opener and gate.

Summary of Contents for FM402

Page 1: ...e 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 INSTRUCTIO...

Page 2: ...al General Access Vehicular Gate Operator Class II A vehicular gate operator or system intended for use in a commercial location or building such as a multifamily housing unit five or more single fami...

Page 3: ...tallation Overview for Pull To Open Gates 6 Installation of the First Gate Opener 7 Install Post Bracket Assembly and Gate Bracket 8 Attach Opener Arm 10 Install the Closed Position Stop Plates 11 Mou...

Page 4: ...it stops and reverses direction You will need to adjust the stall force for your particular application The Mighty Mule Gate Opener also has an adjustable auto close feature After the gate reaches the...

Page 5: ...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...

Page 6: ...er 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...

Page 7: ...e Area Driveway 10 10 10 10 10 10 NEVER INSTALL any control device within gray area III After Installation 1 Attach the warning signs included to each side of the gate to alert the public of auto mati...

Page 8: ...ccess Systems LLC 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 Required Safety Precautions...

Page 9: ...apment 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 se...

Page 10: ...front and rear mount from mounting brackets 3 Remove opener from mounting brackets and move gate Disconnect opener ONLY when the power switch is OFF and the gate is not moving www mightymule com 1 800...

Page 11: ...rol board regulates charging Sleep draw is 15 mA active draw is 3 to 8 A Auto memorization of digital transmitter code GTO RF receiver tuned to 318 MHz Opener length with push pull tube fully retracte...

Page 12: ...If your gate is more than 1000 from an AC power source you will need to use a solar panel charging kit minimum 10 watts Refer to the Solar Panels and Gate Activity Chart below Solar Panel and Gate Ac...

Page 13: ...should have ball bearing hinges with grease fittings The gate post should be be secured in the ground with concrete so it will minimize twist or flex when the opener is activated The addition of a ho...

Page 14: ...stallation DVD 1 Gate Bracket 2 Post Pivot Bracket 2 3 8 Bushings 2 Customer Support Card 1 Post Bracket 2 Closed Position Stop Plate 2 2 Mounting Screw 6 E Z GATE OPE NER Transformer 1 Warning Signs...

Page 15: ...he control box Page 14 26 If your gate is more than 1000 away from an AC power source you will need to use at least one 10 Watt solar panel FM123 or two 5 Watt panels FM121 to charge the 12 Volt batte...

Page 16: ...ackets allows for 1 of clearance between the gate and the opener in both the open and closed position at the same time maintaining a maximum distance of 13 from the end of the retracted opener arm to...

Page 17: ...netrate the post On wood posts place a metal plate or washer not supplied between the nuts and the post to prevent the thrust of the opener from pulling the bolts and washers out of the wood The post...

Page 18: ...ener with a clevis pin and a 3 8 bushing Secure the clevis pin with a hairpin clip Step 4 With the gate in the fully open position and the opener arm fully retracted adjust the post bracket assembly a...

Page 19: ...move the 5 16 x 11 2 bolt and readjust the post pivot bracket TIP Turn the post pivot bracket over for more hole alignment options You can also move the entire post bracket assembly to different posit...

Page 20: ...Post Remove excess bolt length with hacksaw or bolt cutters SIDE VIEW TOP VIEW EXAMPLES Gate Bracket Mounting Examples Attach Opener Arm Step 1 Attach the opener to the securely bolted post bracket as...

Page 21: ...gates and move the gates to the closed position Step 2 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...

Page 22: ...ition Stop Plate Low Profile Ground Stop Closed Position Stop Plate Step 4 Using appropriate hardware for your type of gate attach the vertical closed position stop plate to the SECOND gate frame at t...

Page 23: ...L BOX Battery Back of Control Box Battery Wire Harness with In Line Fuse Step 5 Tuck the excess battery leads into the battery box and reattach the CONTROL BOX to the BATTERY BOX Step 6 Remove the fou...

Page 24: ...is 16 gauge stranded low voltage direct burial wire This particular gauge enables the transformer to provide an adequate charge through the control board to the battery at distances up to 1000 DO NOT...

Page 25: ...ten set screws against exposed end of wires Step 6 At the AC outlet strip 1 2 of insulation from the ends of the low voltage wire Attach these stripped ends to the transformer terminals We suggest add...

Page 26: ...ine tune the gate position if neccessary Step 4 With the gates in in the desired closed positions PRESS and HOLD the SET LIMIT button until the alarm and RED Light come on Then release the button NOTE...

Page 27: ...t of force the opener will apply against an obstruction before it stops and reverses direction within two seconds IMPORTANT The Stall Force setting will need to be adjusted to compensate for the weigh...

Page 28: ...o less than 5 feet FCC WARNING Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment In accordan...

Page 29: ...This mounting position will give the opener the most efficient leverage point for operation and provides the least possible pinch area C After verifying that you have the best position for the post p...

Page 30: ...neccessary C Press and HOLD the SECOND Opener OPEN button on the control board and be prepared to RELEASE the button when the gates reached the desired open position limit Use the JOG OPEN and CLOSE b...

Page 31: ...sert one solar panel wire into a 14VAC OR SOLAR terminal Insert the other solar panel wire into the remaining 14VAC OR SOLAR terminal The wires can be connected to the 14VAC OR SOLAR terminals regardl...

Page 32: ...Safety Devices Photo Beams Push Button Control Gate Opening Sensor Refer to Sensor manual for additional information if needed Edge Sensor Automatic Gate Lock NOTE Connections are for typical applica...

Page 33: ...ll cycle the operation as follows OPEN STOP CLOSE STOP OPEN 4 EDGE SENSOR Typically for use with contact edge sensor Activation of this input while gate is moving will cause it to reverse direction fo...

Page 34: ...elf test when the unit is turned on b Continuous beep after power up Unit has learned new transmitter code releasing the transmitter button will shut off the alarm c Rapid beeping Unit has encountered...

Page 35: ...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 back of opener arm and date of purchase when calling for assistance 4 If...

Page 36: ...ich offers hands free operation of the Mighty MuleGate Openor with a 12 ft radius of detection of vehicles in motion A wireless version of the Gate Opening Sensor is available FM130 Automatic Gate Loc...

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