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This can dramatically reduce the amount of standby time available from the batteries. To extend the available standby time, the charger board has a “sleep” mode feature which will turn off power to all controls except for any that are wired according to the schematics below. By removing the black jumper cap JP1 located in the upper right hand corner of the charger board this feature can be enabled. After fifteen minutes of inactivity, all controls except those wired as shown below will turn off. Those wired as shown will continue to have power at all times and will upon activation generate first a “wake” signal that will power all controls back up, and then create either an open signal or single button signal, depending on how the wire jumper shown below is connected. JP1 JUMPER CAP WAKE OPEN TERMINAL TERMINAL CHARGER BOARD -13 MODEL BGUS/BGUS-D • SG/SG-D OPERATOR INSTALLATION GUIDE CONTROL and ACCESSORY CONNECTION ILLUSTRATIONS -14 MODEL BGUS/BGUS-D • SG/SG-D OPERATOR INSTALLATION GUIDE CONTROL and ACCESSORY CONNECTION ILLUSTRATIONS -15 MODEL BGUS/BGUS-D • SG/SG-D OPERATOR INSTALLATION GUIDE CONTROL and ACCESSORY CONNECTION ILLUSTRATIONS -16 MODEL BGUS/BGUS-D • SG/SG-D OPERATOR INSTALLATION GUIDE TROUBLESHOOTING Operator fails to start: A. If the operator has been running a large number of cycles, the motor may have gotten hot and tripped the overload. Allow the motor to cool down and press the overload reset button in bottom of motor. B. Make sure you have power at the master distribution panel and that the power has not been turned off. C. The secondary fuse on the control board may have blown. Replace the fuse (refer to control box parts lists on Page 27 or Page 28 for part number information). Motor operates, but gate does not move: A. Check for broken or worn belts. B. Check all setscrews on pulleys and sprockets and tighten them if necessary, and check for keys which may have fallen loose from keyways. Motor sounds like it is working harder than normal: A. Make sure the gate is moving freely and without binding throughout its entire travel. Limit switch getting out of time: A. Check the setscrews in limit cams and limit sprockets for tightness. Replace if necessary. Gate stopping part way open or closed (but no visible obstruction): A. The control board may have received a false obstruction input triggered by current sensing set too low. Make sure the gate moves freely through its entire travel before adjusting the current sensing. B. The maximum run timer may have counted down and expired. This can be caused by having the timer set too low, if a chain or belt is broken, or if a sprocket or pulley is slipping. When the timer expires, the gate stops and the stop button must be pressed to reset gate. C. An obstruction signal from an accessory wired to the obstruction input may have triggered falsely. Check the control board for lit L.E.D. indicators for any of the following inputs: safety, shadow, open obstruction, close obstruction, stop, etc. If any are lit when the operator should be running, remove all devices hooked to that function and hook them up one at a time and try to run the operator until the problem device is found. Refer to Page 12 for details on the control board indicators. Gate staying open with automatic system: A. If there are vehicle detectors in your machine which are set up for reverse, one of your loops or loop detectors may be sending a false signal. Disconnect the wire harness and try running the operator. B. An opening or reversing device may be stuck or malfunctioning. Try disconnecting these devices and hook them back up one at a time and try running the operator until the malfunctioning device is found. C. Make sure the close limit switch isn’t activated. If it is, the operator will think the gate is already closed. HOW TO ORDER REPLACEMENT PARTS Use the part numbers listed on the following pages. Contact your local LINEAR dealer or distributor to order parts. 1. Supply the model number and serial number of your operator. 2. Specify the quantity of pieces needed and order by part number and name of part. 3. State whether to ship by freight, truck, parcel post, UPS or air express. 4. State whether transportation charges are to be prepaid or collect. 5. Specify name and address of person or company to whom parts are to be shipped. 6. Specify name and address of person or company to whom invoice is to be sent. -17 MODEL BGUS/BGUS-D • SG/SG-D OPERATOR INSTALLATION GUIDE MODEL BGUS MECHANICAL PARTS EXPLODED VIEW -18 MODEL BGUS/BGUS-D • SG/SG-D OPERATOR INSTALLATION GUIDE MODEL BGUS MECHANICAL PARTS LIST Ref. Part No. Number Description 2 2110-781* Welded Cabinet Assembly 3 2100-372* Enclosure Door 5 2220-008 Lock Assembly with Key 6 2110-746 Bearing Block Assembly Kit 7 2110-170 Drive Shaft Assembly 8 2110-732 Gate Arm Flange 9 2100-1925-BT Arm Attachment Channel 10 2100-1926-BT Counterweight 12 2110-441 Connecting Link with Bearings 26 2200-136 Flange Bearings 17 2500-2307 Mot...

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