LiftMaster BG790 BG790 Manual

LiftMaster BG790 Manual

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  • LiftMaster BG790 | BG790 Manual - Page 1
    OWNER'S MANUAL MODELS BG770 & BG790 VEHICULAR BARRIER GATE OPERATOR MODELS BG770 AND BG790 ARE FOR VEHICULAR PASSAGE GATES ONLY AND ARE NOT INTENDED FOR PEDESTRIAN PASSAGE GATE USE
  • LiftMaster BG790 | BG790 Manual - Page 2
    INSTRUCTIONS Electrical Operation 13 Manual Operation 13 TROUBLESHOOTING Power 14 Accessories 14 Primary Voltage Circuit 15 Low Voltage Circuit 15 General Reference Information 15 REPAIR PARTS Illustrated Parts - Model BG770 16 Repair Parts - Model BG770 17 Illustrated Parts - Model BG790
  • LiftMaster BG790 | BG790 Manual - Page 3
    lock. MECHANICAL SPEED REDUCTION Wormgear-in-oil-bath, 60:1 ARM TYPE MODEL BG770: One piece type to 15' MODEL BG790: Counterweighted wishbone type to 24' ARM SPEED MODEL BG770: Opens in 4 seconds MODEL BG790: Opens in 11 seconds LUBRICATION Permanently lubricated bearings in motor. Low temperature
  • LiftMaster BG790 | BG790 Manual - Page 4
    part of a gate system. Therefore, safety features must be incorporated into every design. Specific safety features include: • Gate Edges • Guards for Exposed Rollers • Photoelectric Sensors • Screen Mesh • Vertical Posts • Instructional and Precautionary Signage 4. Install the gate operator
  • LiftMaster BG790 | BG790 Manual - Page 5
    -25 Hex Bolt, 1/2-13 x 2-1/4 4 82-RH-50 Hex Nut, 1/2-13 4 85-LS-50 Split Lock Washer, 1/2 4 01-G0674 Owner's Manual 1 SITE PREPARATION 1. Be sure that selected gate location has required clearance for arm movement (and counterweights on model BG790). Refer to the dimensional drawings on
  • LiftMaster BG790 | BG790 Manual - Page 6
    adhesive backed tape as required. Figure 3 MODEL BG790 (WISHBONE ARM) 5-12" A 24' wishbone arm is provided as standard with every BG790 gate. If a shorter arm is desired, the extension may be shortened (Figure 4). The maximum arm extension is 8' for a total arm length of 24'. 1. Cut to desired
  • LiftMaster BG790 | BG790 Manual - Page 7
    . If you will mount the control station outdoors, replace the standard station supplied with the operator with a weatherproof station. 6. The BG770 and BG790 barrier gates will interface with almost all types of commonly used control stations, radio controls, and access control equipment. Refer to
  • LiftMaster BG790 | BG790 Manual - Page 8
    STANDARD ARM Attach arm to the arm hub flange (Figure 5). MODEL BG770: OPTIONAL ARM Attach arm to the arm hub flange (Figure 6). WARNING When following the procedure below, the motor belt will turn and the drive shaft will move during some of the steps. Keep hands and tools out of the gate cabinet
  • LiftMaster BG790 | BG790 Manual - Page 9
    MODEL BG790: WISHBONE COUNTERWEIGHTED ARM 1. Bolt counterweights to ends of arms clamps (Figure 7). Use caution lifting 57 lb. weights. 2. Bend and fasten the two arms together (Figure 8). If an extension arm is required, sandwich the extension arm between the two halves of the wishbone arm
  • LiftMaster BG790 | BG790 Manual - Page 10
    as necessary until the gate arm is in the desired horizontal position. Retighten jam nuts. MODEL BG770 TURNBUCKLE SHAFT ALIGNMENT If necessary, align turnbuckle shaft with center of crank arm for lowest point of travel of pivot arm (Figure 10). MODEL BG790 ADJUSTMENTS 1. If necessary, rotate
  • LiftMaster BG790 | BG790 Manual - Page 11
    CLOSE limit switch also. 1. Position the AUXILIARY CLOSE cam slightly ahead of the CLOSE cam. When the gate arm is on its down travel, the AUXILIARY CLOSE switch will activate just before the CLOSE switch. 2. When is activated (Figure 12). 2. Retighten the cam. OPEN Direction CLOSE Direction 11
  • LiftMaster BG790 | BG790 Manual - Page 12
    both model BG770 and BG790. More than one detector may be connected to the gate, and may be mounted inside of the cabinet. Connect the detector(s) according to the instructions on the wiring diagrams supplied with the gate and with the detector itself. FACTORY SUPPLIED PLUG-IN DETECTORS LiftMaster
  • LiftMaster BG790 | BG790 Manual - Page 13
    OPERATING INSTRUCTIONS ELECTRICAL OPERATION The BG770 and BG790 barrier gate operators are designed to provide years of trouble-free operation. The gate may be operated by means of the two button control station, or by other means if provided. ON/OFF POWER SWITCH The gate is provided with an ON/OFF
  • LiftMaster BG790 | BG790 Manual - Page 14
    TROUBLESHOOTING When troubleshooting, one of the first things to do is try to isolate the problem area. The four (4) main areas to check out are: • Power • Accessories • Operator's Primary Voltage • Operator's Low Voltage POWER Always use extreme caution! Some possible symptoms of power problems
  • LiftMaster BG790 | BG790 Manual - Page 15
    correct the problem or if you feel you will require technical assistance, contact your local distributor or dealer. If you do not have a distributor or dealer, then contact us for technical assistance. Please when calling for assistance, make sure you have the gate operator model number, voltage
  • LiftMaster BG790 | BG790 Manual - Page 16
    ILLUSTRATED PARTS - MODEL BG770 8 10 5 34 11 37 15 3 30 43 22 14 44 29 38 35 9 17 41 31 2 45 19 4 40 42 16 36 39 6 46 27 18 28 20 24 7 48 12 33 25 21 26 1 47 32 13 9 23 16 Operator Assembly
  • LiftMaster BG790 | BG790 Manual - Page 17
    -75 43 85-FW-50 44 85-LS-50 45 91-G0122 NOT SHOWN 02-102 03-ABDIN-4 13-8000 13-8001 42-3608 74-G0120 80-1904N 80-207-36 80-5001 80-G0186 DESCRIPTION 3 Pole Contactor Lower Crank Upper Crank Crank Link Gate Arm Hub Reducer Shim Tan Barrier Gate Enclosure Gate Bracket Switch Bracket
  • LiftMaster BG790 | BG790 Manual - Page 18
    ILLUSTRATED PARTS - MODEL BG790 12 34 33 2 7 14 2 33 40 15 3 42 40 16 8 37 32 9 6 24 1 22 31 26 32 27 48 41 4 14 13 43 44 5 14 30 36 10 17 18 20 19 21 34 12 28 29 44 25 45 39 23 38 45 44 35 46 14 47 11 49 Operator Assembly (Wishbone Arm not shown) 18
  • LiftMaster BG790 | BG790 Manual - Page 19
    Block 1 Wishbone Arm 1 BG790-50-11, BG790-50-21, BG790-50-81 20-3050B-4E 1/2HP - 208/230/460Vac - 30-60Hz Used on: BG790-50-23, BG790-50-43, BG790-50-83 20-3050M-5 1/2HP - 575Vac - 30-60Hz Used on: BG790-50-53 48 24-XXX-X Relay 1 24-115-1 115Vac Relay Used on: All 115Vac, 10 Models
  • LiftMaster BG790 | BG790 Manual - Page 20
    travel, retest the gate operator. Failure to adjust and retest the gate operator properly can increase the risk of INJURY or DEATH. 5. Use the emergency release ONLY when the gate is not moving. 6. KEEP GATES PROPERLY MAINTAINED. Read the owner's manual. Have a qualified service person make repairs
  • LiftMaster BG790 | BG790 Manual - Page 21
    servicing operator 5 (OR) 230V ONLY (YEL) (YEL) AUTO/MANUAL OPEN OPEN LOOP-PRESENCE (GN) (W) J3-4 J3-6 TO CAUSE GATE ARM TO CLOSE IMMEDIATELY OPERATOR. 4) BROWN WIRES INSIDE MOTOR NOT USED, SHOULD BE WIRE NUTTED. APPLICATIONS: CONTROL WIRING TYPE L2 MODEL TYPES: FIELD WIRING BG770, BG790
  • LiftMaster BG790 | BG790 Manual - Page 22
    servicing operator. EQUIPMENT) (YEL) 4 (YEL) AUTO/MANUAL O/L IN SEE NOTE 1 (BL) TD-2 2) REMOVE JUMPER TO CAUSE GATE ARM TO CLOSE IMMEDIATELY UNLESS HOLD OPEN OPERATOR. 1 APPLICATIONS: CONTROL WIRING TYPE FIELD WIRING & ADJUSTMENTS MODEL TYPES: HORSEPOWER: VOLTAGE/PHASE: BG770 (PG) BG790
  • LiftMaster BG790 | BG790 Manual - Page 23
    DETECTORS SHOULD BE DIRECTLY WIRED TO DETECTOR ITSELF. REFER TO INSTRUCTIONS ACCOMPANYING DETECTOR. RADIO CONTROL WILL OPEN GATE AND REVERSE IF CLOSING. IT WILL NOT STOP OR CLOSE THE GATE. NOTES: 1) REMOVE THIS JUMPER TO CAUSE GATE ARM TO CLOSE IMMEDIATELY WHENEVER IT IS OPENED, UNLESS A VEHICLE
  • LiftMaster BG790 | BG790 Manual - Page 24
    AMERICA FOR INSTALLATION AND SERVICE INFORMATION, CALL OUR TOLL FREE NUMBER 1-800-528-2806 www.liftmaster.com WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOLLOWING INFORMATION: PART NUMBER DESCRIPTION MODEL NUMBER ADDRESS ORDERS TO: THE CHAMBERLAIN GROUP, INC. Technical Support Group 6050 Country
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OWNER’S MANUAL
MODELS BG770 & BG790
VEHICULAR BARRIER GATE OPERATOR
MODELS BG770 AND BG790 ARE FOR VEHICULAR PASSAGE GATES ONLY
AND ARE NOT INTENDED FOR PEDESTRIAN PASSAGE GATE USE