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## Page 1 > **IMPORTANT:** Before you install the automatic gate lock be sure your gate is level, moves freely on its hinges, and does not bind or drag against the ground. # GTO AUTOMATIC GATE LOCK® Installation Manual > Figure: Photograph of a GTO Automatic Gate Lock installed on a metal gate. The lock body is mounted horizontally across the gate and engages a receiver on the gate post. A wire exits the lock body. **PLEASE NOTE:** Because of the various mounting applications, **no mounting hardware is provided** with the GTO Automatic Gate Lock. All necessary mounting hardware can be obtained from your local hardware store; all other hardware is provided. This manual shows two examples of the most common installations, and should provide insight into most other applications. If you have any questions during installation, please call (800) 543-1236 for technical support. For more information on GTO's full line of automatic gate openers and access controls visit our website at www.gtoinc.com RB909  rev-10/19/07 Printed in China for GTO, Inc.  © GTO, Inc. 2007 ## Page 2 # Before You Start... For the GTO Automatic Gate Lock to work properly, the gate must close firmly against a positive stop and engage the lock catch against the lock receiver. Achieving optimal closure may require slight adjustments to the gate opener settings. Installing the lock with the Gate Opener may require resetting closed limits and changes to the stall force. See **Setting the Gate Closed Position** in your *Gate Opener Installation Manual* for information on these adjustments. Set the limits so that the arm holds the gate snug against the stop in the closed position. **IMPORTANT: You may need to spray the locking mechanism with silicone spray initially to help the latch move freely.** If you are installing the lock on a **Push-to-Open** gate (gate opens out), the lock must be installed on the *outside* of the gate. Depending upon the installation, the gate post may need to be "pocketed" to accommodate the lock receiver or you may want to purchase the column mount receiver. Contact the GTO Technical Service Department at (850) 575-4144 for assistance if needed. **NOTE: Positive stops are required for dual gate applications.** # Be sure you have all the parts: A - Lock with 20' of low voltage wire B - Lock Receiver C - Clevis Pin D - Locking Cap E - Lock Board Battery Lead Wires F - White Wire (motor lead to lock board) G - Lock Control Board (Lock PCB) H - 2 Double Spade Tongue terminals I - 6 nylon cable ties J - Wire Connector K - Lock Keys (for manual release) L - Lock Decal M - Optional Column Mount Receiver   433IH (not included) > Figure: Illustrated parts inventory. > **A:** Lock with attached coiled low-voltage wire; dimensions labeled **2"** high, **8½"** long, and **5½"** for the top mounting slot/bracket. > **B:** Lock receiver; dimensions labeled **2"** and **2¾"**. > **C:** Clevis pin; labeled **3½"** long and **¼" Diameter**. > **D:** Locking cap. > **E:** Lock board battery lead wires. > **F:** White wire, motor lead to lock board. > **G:** Lock Control Board (Lock PCB). > **H:** Two double spade tongue terminals. > **I:** Six nylon cable ties. > **J:** Wire connector. > **K:** Lock keys for manual release. > **L:** Lock decal reading “GTO AUTOMATIC GATE LOCK.” > **M:** Optional Column Mount Receiver, **433IH (not included)**. # What else do you need? Mounting hardware is **not included**. Read these instructions completely and review the installation examples to determine the mounting hardware required for your application. **NOTE:** The GTO Lock is designed to use mounting hardware **up to 5/16"** in diameter. For a more secure installation, use lock washers and lock nuts on all mounting hardware. For most **IRON or ALUMINUM TUBE** gates you will need: Carriage bolts, washers, and nuts for the lock and receiver. *(see Illustration B, page 3)* For most **CHAIN LINK** gates you will need: U-Bolts, saddles or carriage bolts, washers and nuts for the lock. Bolts, washers, and nuts for the receiver. *(see Illustration C, page 3)* # The installation has two parts: ## (1) Mounting The Lock and Lock Receiver ## (2) Connecting the Control Boards Once you have the necessary mounting hardware, you can begin the installation. 1 ## Page 3 # Installing The Gate Lock **NOTE:** The Automatic Gate Lock can be installed on single and dual gate systems. Use the appropriate instructions for the system you have - SINGLE GATE (below) or DUAL GATES (page 4). # Single Gate Installation Turn power switch **OFF** on the bottom of the control box. Disconnect gate opener by removing hairpin clip and clevis pin from the gate bracket end of the opener. Disconnecting the opener will allow the gate to swing freely during installation of the gate lock. **Step 1:** With the gate in the closed position, determine the best location for the lock and lock receiver. The lock and receiver must be level and aligned with the opener. Also, the lock should have a solid surface or cross member to provide stability. **Step 2:** Clamp receiver and lock together (with receiver pin hole and lock slot aligned) against the gate post, mark their positions to drill receiver holes *(see Illustration B and C, page 3)*. The receiver must be mounted with carriage bolts, not U-bolts, to allow lock to seat properly. Fasten the receiver to the gate post. **Step 3:** Hold latch open with key to operate gate and check closed limit and lock alignment. Drop pin in receiver but don't put the cap on. Recheck the lock's position and alignment, then mark its position for drilling holes. **Step 4:** Drill the holes on gate supports through the slots in the lock bracket. U-bolts and saddles can be used to mount the lock on chain link gate supports. Secure the lock to the gate. Install clevis pin and locking cap by placing clevis pin through slots in lock receiver and hammering the clevis pin into the locking cap *(see Illustration D)*, secure the lock bracket and check the alignment again. > Figure: **Illustration A.** Diagram of a single swing gate with the GTO Automatic Gate Lock and receiver at the closing end of the gate. The lock and receiver are shown aligned horizontally with the gate opener. Label: “Lock and receiver must be level and aligned with opener.” A lower inset shows the gate closed with lock aligned; a second inset shows the gate sagging/misaligned, causing the lock and receiver not to align. The opener, control box, and connecting wires are shown on the hinge-post side. 2 ## Page 4 > Figure: **Illustration B — Iron or Aluminum Tube Fence and Gate Installation.** Exploded and assembled drawings of an iron or aluminum tube gate and fence post. Labels: “Remember to check the alignment and mark positions before drilling holes in fence post and gate.” “Clevis Pin,” “Receiver,” “Locking Cap,” “GTO Automatic Gate Lock,” and “Carriage bolts, washers, and nuts (not provided; size of fasteners depends on the gate).” Arrows/dashed lines show carriage bolts passing through the receiver and lock mounting brackets into the fence post and gate. The assembled drawing shows the receiver on the post and the lock on the gate engaging it. > Figure: **Illustration C — Chain Link Fence and Gate Installation.** Exploded drawing of a chain link gate and fence post. Labels: “Remember to check the alignment and mark positions before drilling holes in fence post.” “Clevis Pin,” “Receiver,” “Locking Cap,” “U-bolts, saddles & nuts (not provided),” “Added cross member to support lock from force of slamming shut,” and “Lock.” Dashed lines and arrows show the receiver bolted to the fence post and the lock mounted to the gate using U-bolts, saddles, and nuts. An added cross member supports the lock. > Figure: **Illustration D — Locking Cap Assembly.** Vertical assembly diagram showing a clevis pin inserted through the receiver, with a locking cap beneath it. A hammer strikes the clevis pin from above while the locking cap is supported below by a clamp/block arrangement, indicating that the pin is hammered into the locking cap. 3 ## Page 5 # Dual Gate Installation Turn power switch OFF on the bottom of the control box. Disconnect gate openers by removing hairpin clip and clevis pin from the gate bracket end of the openers. Disconnecting the openers will allow the gates to swing freely during installation of the gate lock. **NOTE:** In a DUAL GATE INSTALLATION the gate opener on the same side of the driveway as the control box is known as the MASTER GATE OPENER and that gate is referred to as the MASTER GATE. Conversely the gate opener on the other gate is referred to as the SLAVE GATE OPENER and the gate is referred to as the SLAVE GATE. **IMPORTANT:** To use the gate lock on a dual gate system, the gate sequencing must be set so the MASTER GATE opens first and closes last, and the gate lock has to be mounted on the MASTER GATE and the lock receiver is mounted on the SLAVE GATE. The slave gate requires a positive stop. If your gates are not sequenced in a manner that works like this, you'll have to change the sequencing DIP switches on your gate opener control board. Follow the instructions in your gate opener installation manual for programming dual gate sequencing. The diagrams below will show how most dual GTO/PRO® and Mighty Mule® gate sequencing is programmed. If your gate opener control board is different form these shown, please contact GTO Technical Service at 1-800-543-1236 for additional information. > Figure: Four control-board diagrams showing dual-gate sequencing DIP-switch settings. > > **For Mighty Mule® FM702, GTO/PRO® 1000 and GTO/PRO® 2000 Dual Gate Openers:** Diagram labels: “DIP switches,” “OBSTRUCT SENS.,” “PULL/PUSH,” “SNGL/DUAL,” “SEQ1,” “SEQ2,” “LEARN,” “MIN,” and “MAX.” > First Operator opens first, Second Operator closes first > SEQ1 = OFF SEQ2 = ON > If SEQ1 is set to OFF, and SEQ2 is set to ON, the FIRST OPERATOR will open first, and the SECOND OPERATOR will close first. > > **For Mighty Mule® FM502, GTO/PRO® 3000 and GTO/PRO® 4000 Dual Gate Openers:** Diagram labels: “DIP switches,” “TRANSMITTER,” “LEARN,” “SET LIMIT,” “DUAL MODES,” “SEQ LIMIT,” and switch positions “OFF” and “ON.” > Master opens 2 secs before slave, Slave closes 8 secs before master. > Switch 1 = ON Switch 2 = OFF Switch 3 = ON > If Switch 1 is set to ON, Switch 2 is set to OFF and Switch 3 is set to ON, the MASTER OPERATOR will open first, and the SLAVE OPERATOR will close first. > > **Mighty Mule® 350 Control Board:** Diagram labels: “PULL-PUSH,” “MODE1,” “MODE2,” “LOCK/BEACON,” and “RF.” > Master opens 2 secs before slave, Slave closes 8 secs before master. > Switch 2 = OFF Switch 3 = ON Switch 4 = OFF > If Switch 2 is set to off and Switch 3 is set to on the MASTER will open first and the SLAVE operator will close first. Switch 4 must be set to LOCK MODE to avoid damaging circuit board. > > **Gen - 3 (Blue) Control Boards:** Diagram labels: “AUTO CLOSE TIME,” “STALL FORCE,” “STATUS,” “LEARN RMT,” “LEARN MAST LIMIT,” “LEARN SLV LIMIT,” “SOFT START,” “WARNING,” “OPEN,” “SLV OPEN DLY.,” “MODE1,” “MODE2,” “PULL,” “PUSH,” “SIMULT.,” “OFF,” “ON,” “120,” “MIN,” and “MAX.” > Master opens 2 secs before slave, Slave closes 8 secs before master. > Switch 4 = OFF > If Switch 4 is set to OFF, the MASTER OPERATOR will open first, and the SLAVE OPERATOR will close first. ## Page 6 With the sequencing set correctly follow the steps and diagrams below to mount the lock to the gates. **Step 1:** With the gate in the closed position, determine the best location for the lock and lock receiver. The lock and receiver must be level and aligned with the opener. Also, the lock should have a solid surface or cross member to provide stability. **Step 2:** Clamp receiver and lock together (with receiver pin hole and lock slot aligned) to the gates, mark their positions to drill holes (*see Illustration E and F, page 6*). The receiver must be mounted on the SLAVE GATE with carriage bolts, not U-bolts, to allow lock to seat properly. **Step 3:** Recheck the lock's position and alignment. Hold latch open with key and operate gate. Drill the holes on gate supports through the slots in the lock bracket. U-bolts and saddles can be used to mount the lock on chain link gate supports. Secure the lock to the MASTER GATE. Install clevis pin and locking cap by placing clevis pin through slots in lock receiver and hammering the clevis pin into the locking cap (*see Illustration G*), secure the lock bracket and check the alignment again. > Figure: Front view of a dual swing-gate installation. The left gate is labeled “SLAVE GATE (second gate opener)” and the right gate is labeled “MASTER GATE (first gate opener).” A lock receiver is mounted at the center of the slave gate and the gate lock is mounted at the center of the master gate. A dashed horizontal alignment line passes through both components. Label: “Lock and receiver must be level and aligned with opener.” > Figure: Two side-view alignment diagrams. The upper diagram shows a level gate and aligned receiver and lock. An arrow points to the latch with the instruction: “Hold latch open with key to operate gate. Receiver pin hole and lock slot must line up.” The lower diagram shows misalignment caused by a tilted gate/lock. ## Page 7 > Figure: **Illustration E.** Exploded and assembled views of a gate lock mounted to solid gate posts. Labels: “Remember to check the alignment and mark positions before drilling holes in fence post and gate.” “Clevis Pin,” “Receiver,” “Locking Cap,” “GTO Automatic Gate Lock,” and “Carriage bolts, washers, and nuts (not provided; size of fasteners depends on the gate).” The exploded view shows the receiver installed on one gate post using carriage bolts, washers, and nuts; the lock installs on the opposing gate post. The assembled view shows the receiver and lock engaged. > Figure: **Illustration F.** Exploded and assembled views of a gate lock mounted to chain-link gates. Labels: “Remember to check the alignment and mark positions before drilling holes in fence post.” “Clevis Pin,” “Receiver,” “Locking Cap,” “U-bolts, saddles & nuts (not provided),” “Added cross member to support lock from force of slamming shut,” and “Lock.” The receiver is mounted at one gate edge; U-bolts, saddles, and nuts secure the lock to the opposing chain-link gate and an added cross member. > Figure: **Illustration G — Locking Cap Assembly.** A clevis pin is inserted downward through the receiver slots into the locking cap. A hammer strikes the top of the clevis pin to seat it into the locking cap. ## Page 8 # Wiring the Lock to Mighty Mule PRO-SW2000XL, PRO-SW3000XL, and PRO-SW4000XL Gate Opener Control Boards ## Lock Board Wiring Chart \* Place a dab of petroleum jelly on the terminal contacts to prevent corrosion. > Figure: Wiring diagram for a gate lock connected to a “2000XL,3000XL,4000XL Control Board.” The board labels include “CONTROL OUTPUTS,” “LOCK PWR,” “AUX RLY,” “18 VAC or SOLAR,” “GTO LOCK,” “AUX,” “SLAVE CAB,” and “SLAVE INPUT.” The lock’s BLACK wire connects to the left “GTO LOCK” terminal; the lock’s RED wire connects to the adjacent “GTO LOCK” terminal. Labels alongside wires: “BLACK Wire From Lock” and “RED Wire From Lock.” The diagram shows the black and red wires running from the lock to the control board. ## Page 9 **Wiring the Lock to Gate Opener Control Boards** **MM500/502, PRO-SW3000, PRO-SW4000** Step 1. Turn control box power switch OFF and unplug the transformer or disconnect the solar panel. Remove control box cover and disconnect battery lead wires from the battery terminals before wiring the lock board to the opener control board. Step 2. Connect the WHITE wire (included) to Terminal #1 on the lock board. Connect the RED battery lead wire (included) to Terminal #5 on the lock board. Step 3. Attach the RED control board battery lead wire to one spade tongue on a double spade tongue connector (included). Attach the BLACK control board battery lead wire to one spade tongue on the other double spade tongue connector (included). Step 4. Pull RED and BLACK wires from gate lock through the strain relief and into the control box. Attach BLACK wire to Terminal #3 on lock board. Attach RED wire to Terminal #4 on lock board (see Lock Board Wiring Chart below). Step 5. Attach RED lock board battery lead wire to the double spade tongue terminal with the RED control board lead wire. Attach the BLACK lock board battery lead wire to the double spade tongue connector with the BLACK control board Lead Wire. Step 6. Connect the WHITE wire from the lock board directly to the MASTER OPERATOR terminal block along with the power cable wire from the opener arm. Connect the WHITE wire to the RED terminal for a Pull-to-Open installation or connect WHITE wire to the BLACK terminal for a Push-to-Open installation (see illustration on page 9). Step 7. Reconnect opener to gate bracket. Connect the BLACK Battery lead wire (included) to Terminal #2 on the lock board. (See Lock Board Wiring Chart below). Connect RED wires (with double spade tongue terminal) to POSITIVE (+) battery terminal and the BLACK wires (with double spade tongue terminal) to the NEGATIVE (–) battery terminal. Plug the transformer in or rewire the solar and turn the control box power switch ON. Test opener and lock to make sure it functions properly and make adjustments if necessary. > Figure: “Lock Board Wiring Chart.” Diagram of a lock board with a Time Adj knob and terminals numbered 1, 2, 3, 4, and 5. Arrows/wires identify: Terminal 1—WHITE Wire to RED on Operator Terminal; Terminal 2—BLACK Wire To Battery Negative (–) Terminal; Terminal 3—BLACK Wire From Lock; Terminal 4—RED Wire From Lock; Terminal 5—RED Wire To Battery Positive (+) Terminal. An arrow identifies the “Lock Board.” Note: “* Place a dab of petroleum jelly on the terminal contacts to prevent corrosion.” NOTE: It is recommended that the time adjustment knob is turned all the way to the right. ## Page 10 **Wiring the Lock to Mighty Mule 500/502 and GTO/PRO SW-3000 and SW-4000 Gate Opener Control Boards** > Figure: “Lock Board Wiring Chart,” Pull-to-Open Application. Wiring diagram showing a 12 Volt Battery, Double Spade Tongue Connectors, a 500/502 and 3000/4000 Control Board, MASTER OPERATOR POWER CABLE, lock board, and gate lock. The control board labels include: SWITCH; MASTER OPERATOR; POWER CABLE; RECEIVER; MASTER INPUTS; CYCLE; CLOSE; SAFETY; EXIT/OPEN; SHADOW LOOP; CLOSE EDGE; OPEN EDGE; GRN; WHT; BLUE; BRN; ORG; RED; BLK; COM; STALL FORCE; MIN; MAX; and RECEIVER. > > The battery positive terminal connects through a red wire and double spade connector to the lock board Terminal 5, labeled “RED Wire To Battery Positive (+) Terminal.” The battery negative terminal connects through a black wire and double spade connector to lock board Terminal 2, labeled “BLACK Wire To Battery Negative (–) Terminal.” The gate lock RED wire connects to Terminal 4, labeled “RED Wire From Lock,” and the gate lock BLACK wire connects to Terminal 3, labeled “BLACK Wire From Lock.” A WHITE wire connects Terminal 1 to the operator board Master Operator RED terminal, labeled “WHITE Wire to Operator Board Master Operator RED Terminal.” The master operator power cable wires also connect at the master operator terminal block. The lock board shows terminals 1, 2, 3, 4, and 5 and a Time Adj control. Note: “For Push-to-Open applications connect lock board white wire to the operator board BLK master terminal.” Note: “* Place a dab of petroleum jelly on the terminal contacts to prevent corrosion.” **Manual Lock Release:** The GTO Automatic Gate Lock is keyed for manual release. Should the electronic release be disabled for any reason, simply use the key to manually open the lock. > Figure: Drawing of the automatic gate lock with a key inserted into its keyed manual-release cylinder. ## Page 11 **Wiring the Lock to Gate Opener Control Boards** **FM700, PRO SW-1000, PRO-SW2000, PRO-SL1000, PRO-SL2000** Step 1. Turn control box power switch OFF and unplug the transformer or disconnect the solar panel. Remove control box cover and disconnect battery lead wires from the battery terminals before wiring the lock board to the opener control board. Step 2. Connect the WHITE wire (included) to Terminal #1 on the lock board. Connect the RED battery lead wire (included) to Terminal #5 on the lock board. Step 3. Attach the RED control board battery lead wire to one spade tongue on a double spade tongue connector (included). Attach the BLACK control board battery lead wire to one spade tongue on the other double spade tongue connector (included). Step 4. Pull RED and BLACK wires from gate lock through the strain relief and into the control box. Attach BLACK wire to Terminal #3 on lock board. Attach RED wire to Terminal #4 on lock board (see Lock Board Wiring Chart below). Step 5. Attach RED lock board battery lead wire to the double spade tongue terminal with the RED control board lead wire. Attach the BLACK lock board battery lead wire to the double spade tongue connector with the BLACK control board Lead Wire. Step 6. Connect the WHITE wire from the lock board directly to the FIRST OPERATOR terminal block along with the power cable wire from the opener arm. Connect the WHITE wire to the BLACK terminal for a Pull-to-Open installation or connect WHITE wire to the RED terminal for a Push-to-Open installation (see illustration on page 11). Step 7. Reconnect opener to gate bracket. Connect the BLACK Battery lead wire (included) to Terminal #2 on the lock board. (See Lock Board Wiring Chart below). Connect RED wires (with double spade tongue terminal) to POSITIVE (+) battery terminal and the BLACK wires (with double spade tongue terminal) to the NEGATIVE (–) battery terminal. Plug the transformer in or rewire the solar and turn the control box power switch ON. Test opener and lock to make sure it functions properly and make adjustments if necessary. > Figure: “Lock Board Wiring Chart.” Diagram of a lock board with a Time Adj knob and terminals numbered 1, 2, 3, 4, and 5. Arrows/wires identify: Terminal 1—WHITE Wire to BLACK on Operator Terminal; Terminal 2—BLACK Wire To Battery Negative (–) Terminal; Terminal 3—BLACK Wire From Lock; Terminal 4—RED Wire From Lock; Terminal 5—RED Wire To Battery Positive (+) Terminal. An arrow identifies the “Lock Board.” Note: “* Place a dab of petroleum jelly on the terminal contacts to prevent corrosion.” NOTE: It is recommended that the time adjustment knob is turned all the way to the right. ## Page 12 **Wiring the Lock to Mighty Mule FM-700/702 and GTO/PRO 1000 and 2000 Gate Opener Control Boards** > Figure: “Lock Board Wiring Chart,” Pull-to-Open Application. Wiring diagram showing a 12 Volt Battery, Double Spade Tongue Connectors, a controller with FIRST OPERATOR and SECOND OPERATOR terminal blocks, Power Cable from First Operator, lock board, and gate lock. > > The FIRST OPERATOR and SECOND OPERATOR terminal blocks are labeled RED, BLK, GRN, ORG, and BLU. The first-operator power cable wires are labeled RED, BLACK, GREEN, ORANGE, and BLUE. The WHITE lock-board wire connects to the BLK First Operator Terminal and is labeled “WHITE Wire to Operator Board BLK First Operator Terminal.” > > The battery positive terminal connects through a red wire and double spade connector to lock board Terminal 5, labeled “RED Wire To Battery Positive (+) Terminal.” The battery negative terminal connects through a black wire and double spade connector to lock board Terminal 2, labeled “BLACK Wire To Battery Negative (–) Terminal.” The gate lock RED wire connects to Terminal 4, labeled “RED Wire From Lock,” and the gate lock BLACK wire connects to Terminal 3, labeled “BLACK Wire From Lock.” The lock board has terminals numbered 1, 2, 3, 4, and 5. Note: “For Push-to-Open applications connect lock board white wire to the operator board RED first operator terminal.” Note: “* Place a dab of petroleum jelly on the terminal contacts to prevent corrosion.” ## Page 13 12 **Limited One Year Warranty:** GTO, Inc. • 3121 Hartsfield Road • Tallahassee, Florida 32303 • www.gtoinc.com GTO, Inc., gate opener accessories are warranted by the manufacturer against defects in workmanship for a period of one (1) year from the date of purchase, provided recommended installation procedures have been followed. In the case of product failure due to defective material or manufacturer workmanship within the one (1) year warranty period, the accessory will be repaired or replaced (at the manufacturer's option) at no charge to the customer, if returned freight prepaid to GTO, Inc. 3121 Hartsfield Rd., Tallahassee, FL 32303. **IMPORTANT:** Call (800) 543-1236 for a Return Goods Authorization (RGA) number before returning accessory to factory. Products received at the factory without an RGA will not be accepted. Replacement or repaired parts are covered by this warranty for the remainder of the one (1) year warranty period or six (6) months, whichever is greater. GTO, Inc. will pay the shipping costs (equivalent to United Parcel Service ground rate) for items repaired under warranty. The manufacturer will not be responsible for any charges or damages incurred in the removal of the defective parts for repair, or for the reinstallation of those parts after repair. This warranty shall be considered void if damage to the product(s) was due to improper installation or use, connection to an improper power source, or if damage was caused by lightning, wind, fire, flood, insects, or other natural agent. After the one (1) year warranty period, GTO, Inc. or one of its authorized service centers will make any necessary repairs for a nominal fee. Call GTO at (800) 543-1236 for more information. This warranty gives you specific legal rights, and you may also have other rights which may vary from state to state. This warranty is in lieu of all other warranties, expressed or implied. **NOTE:** Verification of the warranty period requires copies of receipts or other proof of purchase. Please retain those records. **IMPORTANT:** For the optimum service and safety, find the ideal obstruction sensing setting for your gate opener. Depending on the weight of your gate, the ideal setting will be just enough to move your gate without self-obstruction (stopping or reversing due to its own weight), yet sensitive enough to reverse and stop when it meets with an obstruction such as a car. See the GTO Installation Manual for information on obstruction settings. **NOTE:** Be sure your gate moves freely on its hinges without binding or dragging. **Troubleshooting** If lock hangs up and does not latch properly try the following steps before contacting Technical Support: - Reset closed position limit so gate is snug against stop plate - Lubricate latch with silicone spray to help latch to operate freely - Check alignment of lock by using the key to hold the latch open while operating the gate opener If lock still does not operate properly contact the GTO Technical Suppport Department: Hours: MON - FRI 8:00AM - 7:00PM (ET) (800) 543-1236 (850) 575-4144