BG790 Manual
Page 2
...Words on the following pages, they will alert you to the possibility of damage to highlight certain safety related issues. Model BG790 19 MAINTENANCE Limited Bearing Lubrication 20 Grease Turnbuckle 20 WIRING DIAGRAMS Single Phase Wiring Diagram 21 Three Phase Wiring Diagram 22 Control... Manual Operation 13 TROUBLESHOOTING Power 14 Accessories 14 Primary Voltage Circuit 15 Low Voltage Circuit 15 General Reference Information 15 REPAIR PARTS Illustrated Parts - These instructions are intended to your gate and/or the gate operator if you MUST read and fully understand this ...
...Words on the following pages, they will alert you to the possibility of damage to highlight certain safety related issues. Model BG790 19 MAINTENANCE Limited Bearing Lubrication 20 Grease Turnbuckle 20 WIRING DIAGRAMS Single Phase Wiring Diagram 21 Three Phase Wiring Diagram 22 Control... Manual Operation 13 TROUBLESHOOTING Power 14 Accessories 14 Primary Voltage Circuit 15 Low Voltage Circuit 15 General Reference Information 15 REPAIR PARTS Illustrated Parts - These instructions are intended to your gate and/or the gate operator if you MUST read and fully understand this ...
BG790 Manual
Page 3
...class II circuit. MECHANICAL SPEED REDUCTION Wormgear-in which case gate will raise gate. Horsepower is designated by second suffix of gate part number. POWER ON/OFF SWITCH Enclosed toggle switch, HP rated. Gate will lower automatically unless hold open (not provided). ENCLOSURE Weatherproof...or unless CLOSE button wiring has been made, in -oil-bath, 60:1 ARM TYPE MODEL BG770: One piece type to 15' MODEL BG790: Counterweighted wishbone type to 24' DIMENSIONS 22" 44" 35" Typical Installation Typical Installation 3 SPECIFICATIONS MOTOR Squirrel cage induction type (3 phase)...
...class II circuit. MECHANICAL SPEED REDUCTION Wormgear-in which case gate will raise gate. Horsepower is designated by second suffix of gate part number. POWER ON/OFF SWITCH Enclosed toggle switch, HP rated. Gate will lower automatically unless hold open (not provided). ENCLOSURE Weatherproof...or unless CLOSE button wiring has been made, in -oil-bath, 60:1 ARM TYPE MODEL BG770: One piece type to 15' MODEL BG790: Counterweighted wishbone type to 24' DIMENSIONS 22" 44" 35" Typical Installation Typical Installation 3 SPECIFICATIONS MOTOR Squirrel cage induction type (3 phase)...
BG790 Manual
Page 4
...the vehicular gate. 6. Activation of the gate. A minimum of two (2) WARNING SIGNS shall be located in its function as a component part of the gate. Reference owner's manual regarding placement of non-contact sensor for user activation must be located where the transmission of the ...hazards associated with each type of the gate where easily visible. 11. A wireless contact sensor such as at any moving part of many component parts. Each gate system is still moving gate or barrier. 12. Locate the gate such that enough clearance is supplied between the...
...the vehicular gate. 6. Activation of the gate. A minimum of two (2) WARNING SIGNS shall be located in its function as a component part of the gate. Reference owner's manual regarding placement of non-contact sensor for user activation must be located where the transmission of the ...hazards associated with each type of the gate where easily visible. 11. A wireless contact sensor such as at any moving part of many component parts. Each gate system is still moving gate or barrier. 12. Locate the gate such that enough clearance is supplied between the...
BG790 Manual
Page 5
...installation of factory-provided optional open and/or hold open loop detectors and for arm movement (and counterweights on page 3. 2. MODEL BG790 PACKING LIST PART NUMBER DESCRIPTION QTY 02-102 Open/Close Push Button 1 07-8007 Arm Hub 2 10-8055 Counter Weight Clamp 2 80-G0135 ...gate nameplate located inside service cover) accurately matches the operator that may result. Refer to components may be sure that the following parts are included with the freight carrier. 2. OPTIONAL CONTROL EQUIPMENT: If loop detectors, radio controls, or other control equipment will be...
...installation of factory-provided optional open and/or hold open loop detectors and for arm movement (and counterweights on page 3. 2. MODEL BG790 PACKING LIST PART NUMBER DESCRIPTION QTY 02-102 Open/Close Push Button 1 07-8007 Arm Hub 2 10-8055 Counter Weight Clamp 2 80-G0135 ...gate nameplate located inside service cover) accurately matches the operator that may result. Refer to components may be sure that the following parts are included with the freight carrier. 2. OPTIONAL CONTROL EQUIPMENT: If loop detectors, radio controls, or other control equipment will be...
BG790 Manual
Page 13
.... The overload protector will start by itself when the overload is provided with an ON/OFF power switch. OPERATING INSTRUCTIONS ELECTRICAL OPERATION The BG770 and BG790 barrier gate operators are designed to provide years of moving...
.... The overload protector will start by itself when the overload is provided with an ON/OFF power switch. OPERATING INSTRUCTIONS ELECTRICAL OPERATION The BG770 and BG790 barrier gate operators are designed to provide years of moving...
BG790 Manual
Page 17
... Grommet 8 Position Terminal Block 115V Control Box Failsafe Board Stand Off 1/4 x 1/4 x 1-1/4 Key 3/16 x 3/16 x 3/4 Key 1/2 x 1/2 x 1-3/4 Key INDIVIDUAL PARTS QTY ITEM PART #DESCRIPTION QTY 1 NOT SHOWN 1 80-G0187 1/2 x 1/2 x 1-3/8 Key 1 1 81-8000 Shock Mount 8 1 81-PX06-06T 6-32 x 3/8 Self Tapping Screw ... 4 1 85-FW-38 3/8 Flat Washer 4 1 85-LS-75 3/4 Split Lock Washer 2 2 91-G0128 Electrical Enclosure 1 6 1 1 1 VARIABLE PARTS 1 ITEM PART # DESCRIPTION QTY 1 6 1 46 20-XXXXX-X Motor 1 20-1050B-2P 1/2HP - 115/208/230Vac - 10-60Hz 8 Used on: BG770-50-11...
... Grommet 8 Position Terminal Block 115V Control Box Failsafe Board Stand Off 1/4 x 1/4 x 1-1/4 Key 3/16 x 3/16 x 3/4 Key 1/2 x 1/2 x 1-3/4 Key INDIVIDUAL PARTS QTY ITEM PART #DESCRIPTION QTY 1 NOT SHOWN 1 80-G0187 1/2 x 1/2 x 1-3/8 Key 1 1 81-8000 Shock Mount 8 1 81-PX06-06T 6-32 x 3/8 Self Tapping Screw ... 4 1 85-FW-38 3/8 Flat Washer 4 1 85-LS-75 3/4 Split Lock Washer 2 2 91-G0128 Electrical Enclosure 1 6 1 1 1 VARIABLE PARTS 1 ITEM PART # DESCRIPTION QTY 1 6 1 46 20-XXXXX-X Motor 1 20-1050B-2P 1/2HP - 115/208/230Vac - 10-60Hz 8 Used on: BG770-50-11...
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
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
BG790 Manual
Page 19
... Lock Washer 2 91-G0128 Electrical Enclosure 1 94-G0233 Power Cable 1 94-G0234 Motor Cable 1 VARIABLE PARTS ITEM PART # DESCRIPTION QTY 47 20-XXXXX-X Motor 1 20-1050B-2P 1/2HP - 115/208/230Vac - 10-60Hz Used on: BG790-50-11, BG790-50-21, BG790-50-81 20-3050B-4E 1/2HP - 208/230/460Vac - 30-60Hz Used on...
... Lock Washer 2 91-G0128 Electrical Enclosure 1 94-G0233 Power Cable 1 94-G0234 Motor Cable 1 VARIABLE PARTS ITEM PART # DESCRIPTION QTY 47 20-XXXXX-X Motor 1 20-1050B-2P 1/2HP - 115/208/230Vac - 10-60Hz Used on: BG790-50-11, BG790-50-21, BG790-50-81 20-3050B-4E 1/2HP - 208/230/460Vac - 30-60Hz Used on...
BG790 Manual
Page 24
...ORGANIZATION SPANS 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. Please include a brief description of... the problem and a dated proof-of this product, for the structure in its entirety. Defective parts will void this product. The proper operation of this product is originally installed, that it is dependent on how long an implied...
...ORGANIZATION SPANS 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. Please include a brief description of... the problem and a dated proof-of this product, for the structure in its entirety. Defective parts will void this product. The proper operation of this product is originally installed, that it is dependent on how long an implied...
