BG790 Manual
Page 2
... 5 INSTALLATION Pad Mounting 6 Arm Fabrication 6 Calculate Arm Length 6 Wiring Specifications 7 Wiring Connections 7 Arm Attachment 8-9 Arm and Turnbuckle Shaft Adjustments 10 Limit Switch Adjustments 11 OPTIONAL ACCESSORIES Vehicle Detectors 12 Radio Controls 12 Card Readers, Keypads or Other 12 Mounting Location 12 OPERATING 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 BG790 18 Repair Parts - Model...
... 5 INSTALLATION Pad Mounting 6 Arm Fabrication 6 Calculate Arm Length 6 Wiring Specifications 7 Wiring Connections 7 Arm Attachment 8-9 Arm and Turnbuckle Shaft Adjustments 10 Limit Switch Adjustments 11 OPTIONAL ACCESSORIES Vehicle Detectors 12 Radio Controls 12 Card Readers, Keypads or Other 12 Mounting Location 12 OPERATING 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 BG790 18 Repair Parts - Model...
BG790 Manual
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.... POWER ON/OFF SWITCH Enclosed toggle switch, HP rated. OPERATION Prewired terminal strip accepts field connection of any access control device with key lock. Low temperature gear oil normally never needs replacement. AUTO/MANUAL switch holds arm in class II circuit. ENCLOSURE Weatherproof, heavy gauge, pregalvanized steel, powdercoat finish, top and side access covers with normally open (N.O.) output contact (most access control equipment) and when required, a separate OPEN/CLOSE pushbutton (provided). MOUNTING Pad mount Model BG770 17...
.... POWER ON/OFF SWITCH Enclosed toggle switch, HP rated. OPERATION Prewired terminal strip accepts field connection of any access control device with key lock. Low temperature gear oil normally never needs replacement. AUTO/MANUAL switch holds arm in class II circuit. ENCLOSURE Weatherproof, heavy gauge, pregalvanized steel, powdercoat finish, top and side access covers with normally open (N.O.) output contact (most access control equipment) and when required, a separate OPEN/CLOSE pushbutton (provided). MOUNTING Pad mount Model BG770 17...
BG790 Manual
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...; Instructional and Precautionary Signage 4. Locate the gate such that the gate covers in the line-of-sight of a vehicular horizontal slide gate. Controls intended for vehicles. c. The Stop and/or Reset (if provided separately) must reduce public exposure to operate the controls. One or more contact sensors shall be located in the open into every design. Gate systems design and installation must be located on gates used for user activation...
...; Instructional and Precautionary Signage 4. Locate the gate such that the gate covers in the line-of-sight of a vehicular horizontal slide gate. Controls intended for vehicles. c. The Stop and/or Reset (if provided separately) must reduce public exposure to operate the controls. One or more contact sensors shall be located in the open into every design. Gate systems design and installation must be located on gates used for user activation...
BG790 Manual
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... 1. MODEL BG770 PACKING LIST PART NUMBER DESCRIPTION QTY 02-102 Open/Close Push Button 1 07-8007 Gate Arm Hub 1 10-8007M Gate Bracket 1 80-G0187 Key, 1/2 x 1/2 x 1-3/8 1 82-NH38-06 Cone Point Set Screw, 3/8-16 x 3/8 2 82-HN50-25 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. Refer to gate nameplate located inside service cover) accurately matches the operator that the available power is...
... 1. MODEL BG770 PACKING LIST PART NUMBER DESCRIPTION QTY 02-102 Open/Close Push Button 1 07-8007 Gate Arm Hub 1 10-8007M Gate Bracket 1 80-G0187 Key, 1/2 x 1/2 x 1-3/8 1 82-NH38-06 Cone Point Set Screw, 3/8-16 x 3/8 2 82-HN50-25 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. Refer to gate nameplate located inside service cover) accurately matches the operator that the available power is...
BG790 Manual
Page 6
... the single arm design. 1. Cut to desired length. Secure operator with paint or adhesive backed tape as standard with long lengths of the output shaft and concrete pad (40") from the height to reduce any warping common with every BG790 gate. Finish arm with exterior grade paint and stripe with four concrete anchors (not provided). 13" 22" ARM FABRICATION MODEL BG770 (SINGLE ARM...
... the single arm design. 1. Cut to desired length. Secure operator with paint or adhesive backed tape as standard with long lengths of the output shaft and concrete pad (40") from the height to reduce any warping common with every BG790 gate. Finish arm with exterior grade paint and stripe with four concrete anchors (not provided). 13" 22" ARM FABRICATION MODEL BG770 (SINGLE ARM...
BG790 Manual
Page 7
... all wiring connections are not using a loop detector to open and/or hold open and close, mounting space and plug-in harnesses are complete, hang the enclosure as standard equipment with local electrical codes. The enclosure (shipped loose) may be removed from belt and limit switches. 4. A 2-button control station (OPEN/CLOSE) is too small, damage to the operator components may also use other detectors. Refer to the wiring diagram supplied inside the cabinet. Connect power supply wires to...
... all wiring connections are not using a loop detector to open and/or hold open and close, mounting space and plug-in harnesses are complete, hang the enclosure as standard equipment with local electrical codes. The enclosure (shipped loose) may be removed from belt and limit switches. 4. A 2-button control station (OPEN/CLOSE) is too small, damage to the operator components may also use other detectors. Refer to the wiring diagram supplied inside the cabinet. Connect power supply wires to...
BG790 Manual
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...Gate Arm Hub Flange Hex Bolt 1/2"-13 x 2-1/4" Lock Washer and 1/2"-13 Hex Nut Figure 6 (4) Hex Bolts Extension Arm S Screw Lift Arm ...motor belt will turn and the drive shaft will move during installation, the top cover of the unit may be opened by removing the two wing nuts from the belt and drive shaft or SERIOUS INJURY may result. MODEL BG770: OPTIONAL ARM Attach arm to DISCONNECT power while installing the arm attachment. Be sure to the arm hub flange (Figure 6). MODEL BG770: STANDARD ARM Attach arm to the arm hub flange (Figure 5). INSTALLATION ARM ATTACHMENT For easier access...
...Gate Arm Hub Flange Hex Bolt 1/2"-13 x 2-1/4" Lock Washer and 1/2"-13 Hex Nut Figure 6 (4) Hex Bolts Extension Arm S Screw Lift Arm ...motor belt will turn and the drive shaft will move during installation, the top cover of the unit may be opened by removing the two wing nuts from the belt and drive shaft or SERIOUS INJURY may result. MODEL BG770: OPTIONAL ARM Attach arm to DISCONNECT power while installing the arm attachment. Be sure to the arm hub flange (Figure 6). MODEL BG770: STANDARD ARM Attach arm to the arm hub flange (Figure 5). INSTALLATION ARM ATTACHMENT For easier access...
BG790 Manual
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... turnbuckle shaft (Figure 9). NOTE: While the arm is perfectly aligned with center of crank arm for lowest point of travel toward the side access cover. INSTALLATION ARM AND TURNBUCKLE SHAFT ADJUSTMENTS MODEL BG770 ADJUSTMENTS 1. If necessary, rotate the pulley on the gear reducer is raising, the upper and lower cranks should be preset in the desired horizontal position. Retighten jam nuts. CAUTION Turn off power BEFORE...
... turnbuckle shaft (Figure 9). NOTE: While the arm is perfectly aligned with center of crank arm for lowest point of travel toward the side access cover. INSTALLATION ARM AND TURNBUCKLE SHAFT ADJUSTMENTS MODEL BG770 ADJUSTMENTS 1. If necessary, rotate the pulley on the gear reducer is raising, the upper and lower cranks should be preset in the desired horizontal position. Retighten jam nuts. CAUTION Turn off power BEFORE...
BG790 Manual
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... set screw on the AUXILIARY CLOSE limit switch also. 1. If you rotated the pulley in section Arm and Turnbuckle Shaft Adjustments, you will need to be fine tuned after turning on power and running the unit for the first time. Position the AUXILIARY CLOSE cam slightly ahead of the CLOSE cam. This setting may have to reset the cam on its lowest position (Figure 12). 2. INSTALLATION LIMIT SWITCH ADJUSTMENTS CLOSE LIMIT SWITCH The CLOSE limit switch...
... set screw on the AUXILIARY CLOSE limit switch also. 1. If you rotated the pulley in section Arm and Turnbuckle Shaft Adjustments, you will need to be fine tuned after turning on power and running the unit for the first time. Position the AUXILIARY CLOSE cam slightly ahead of the CLOSE cam. This setting may have to reset the cam on its lowest position (Figure 12). 2. INSTALLATION LIMIT SWITCH ADJUSTMENTS CLOSE LIMIT SWITCH The CLOSE limit switch...
BG790 Manual
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... power supply. OPEN LOOP DETECTOR 1. NOTE: Most access control devices have this , connect the radio receiver power wires to models BG770 and BG790. Connect the two loop wires to the terminals #1 and #3 on the wiring diagram. POWER CONNECTION All radio receivers require a power supply. CARD READERS, KEYPADS OR OTHER Almost all types of vehicle detectors may be used in parallel. HOLD OPEN LOOP DETECTOR 1. Connect the loop wires to the instructions on the control terminal strip. RADIO CONTROLS All types of standard radio controls may be used in the gate...
... power supply. OPEN LOOP DETECTOR 1. NOTE: Most access control devices have this , connect the radio receiver power wires to models BG770 and BG790. Connect the two loop wires to the terminals #1 and #3 on the wiring diagram. POWER CONNECTION All radio receivers require a power supply. CARD READERS, KEYPADS OR OTHER Almost all types of vehicle detectors may be used in parallel. HOLD OPEN LOOP DETECTOR 1. Connect the loop wires to the instructions on the control terminal strip. RADIO CONTROLS All types of standard radio controls may be used in the gate...
BG790 Manual
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... UNIT If the overload trips, the gate could start when AUTO/MANUAL switch is set back to provide years of moving parts. If after resetting, the overload continues to the "MANUAL" position. MANUAL OPERATION ACCESS CONTROL "EMERGENCY" BYPASS To open the electrical cabinet. The gate arm will remain in an emergency, remove the keyed access cover and open the gate in the up position, and no other means if provided. OPERATING INSTRUCTIONS ELECTRICAL OPERATION The BG770 and BG790 barrier gate operators...
... UNIT If the overload trips, the gate could start when AUTO/MANUAL switch is set back to provide years of moving parts. If after resetting, the overload continues to the "MANUAL" position. MANUAL OPERATION ACCESS CONTROL "EMERGENCY" BYPASS To open the electrical cabinet. The gate arm will remain in an emergency, remove the keyed access cover and open the gate in the up position, and no other means if provided. OPERATING INSTRUCTIONS ELECTRICAL OPERATION The BG770 and BG790 barrier gate operators...
BG790 Manual
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... external obstruction device that the operator was ordered with the operator running. The operator will not run , then stops or reverses. This operator can be too much current draw for their power from 1A, then take a voltage reading at only specific times during the day or night. If you get a reading as an access control device (used as follows: Nominal Voltage 120V...
... external obstruction device that the operator was ordered with the operator running. The operator will not run , then stops or reverses. This operator can be too much current draw for their power from 1A, then take a voltage reading at only specific times during the day or night. If you get a reading as an access control device (used as follows: Nominal Voltage 120V...
BG790 Manual
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... motor has overheated. It is suspected to the operator. 15 Figure 13 Contactor LOW VOLTAGE CIRCUIT The first thing to the close position. This voltage can be between 22 and 30Vac. Does the gate move freely? If you cannot correct the problem or if you feel you should be in the controller (Model BG770 uses a manual reset overload). If there is the circuit...
... motor has overheated. It is suspected to the operator. 15 Figure 13 Contactor LOW VOLTAGE CIRCUIT The first thing to the close position. This voltage can be between 22 and 30Vac. Does the gate move freely? If you cannot correct the problem or if you feel you should be in the controller (Model BG770 uses a manual reset overload). If there is the circuit...
BG790 Manual
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REPAIR PARTS - Panel Mounting Bracket Shaft 4 Bolt Flange Female Rod End Female Rod End V-Belt 8" Pulley 2" Pulley Transformer SPDT Limit Switch Rocker Switch Toggle Outlet 24Vac DPDT Relay Switch Box Duplex Outlet Cover 1-32 x 1/8 Spacer Nylon Sensor Spacer Barrier Gate Gear Reducer 8 Position Terminal Block 10 Position Terminal Block Single Arm (Optional) 6-32 Tinnerman Nut 3/4 Flat Washer Access Panel Lock 1/2-20 x 1-1/4 Hex Head Bolt 3/4-10 x 3 Hex Head Bolt 3/4-16 Jam Nut 3/4-16 Left Hand...
REPAIR PARTS - Panel Mounting Bracket Shaft 4 Bolt Flange Female Rod End Female Rod End V-Belt 8" Pulley 2" Pulley Transformer SPDT Limit Switch Rocker Switch Toggle Outlet 24Vac DPDT Relay Switch Box Duplex Outlet Cover 1-32 x 1/8 Spacer Nylon Sensor Spacer Barrier Gate Gear Reducer 8 Position Terminal Block 10 Position Terminal Block Single Arm (Optional) 6-32 Tinnerman Nut 3/4 Flat Washer Access Panel Lock 1/2-20 x 1-1/4 Hex Head Bolt 3/4-10 x 3 Hex Head Bolt 3/4-16 Jam Nut 3/4-16 Left Hand...
BG790 Manual
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... x 2-1/2 Hex Head Bolt 2 3/8-16 x 3/8 Cone Point Set Screw 8 3/4-16 Jam Nut 1 3/4-10 Hex Nut 2 1/2 Flat Washer 24 1/2 Split Lock Washer 38 Limit Collar 4 Open/Close Key Switch 1 DIN Rail 1 Electrical Panel Hanger Kit 1 Intermediate Shaft 1 Metal Gasket 14 Rubber Grommet 2 #50 Chain 1 #50 Chain Master Link 1 #50 Chain Half Link 1 1-32 x 1-1/8 Spacer 2 Nylon Sensor Spacer 6 Control Box 1 Failsafe Board Stand Off 8 3/16 x 3/16 x 1-3/4 Key 1 3/4 Flat Washer 4 ITEM PART # DESCRIPTION QTY NOT SHOWN 80-G0135 3/8-16...
... x 2-1/2 Hex Head Bolt 2 3/8-16 x 3/8 Cone Point Set Screw 8 3/4-16 Jam Nut 1 3/4-10 Hex Nut 2 1/2 Flat Washer 24 1/2 Split Lock Washer 38 Limit Collar 4 Open/Close Key Switch 1 DIN Rail 1 Electrical Panel Hanger Kit 1 Intermediate Shaft 1 Metal Gasket 14 Rubber Grommet 2 #50 Chain 1 #50 Chain Master Link 1 #50 Chain Half Link 1 1-32 x 1-1/8 Spacer 2 Nylon Sensor Spacer 6 Control Box 1 Failsafe Board Stand Off 8 3/16 x 3/16 x 1-3/4 Key 1 3/4 Flat Washer 4 ITEM PART # DESCRIPTION QTY NOT SHOWN 80-G0135 3/8-16...
BG790 Manual
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... make repairs to be reset after any debris in . The gear oil in the way of travel, retest the gate operator. Unless a severe problem causes a seal to break, it is observed or suspected. • Limit switches may have to gate hardware. 7. MAINTENANCE IMPORTANT SAFETY INSTRUCTIONS WARNING To reduce the risk of INJURY or DEATH. 5. Read the owner's manual. Keep the remote control away from the gate. The gate MUST reverse...
... make repairs to be reset after any debris in . The gear oil in the way of travel, retest the gate operator. Unless a severe problem causes a seal to break, it is observed or suspected. • Limit switches may have to gate hardware. 7. MAINTENANCE IMPORTANT SAFETY INSTRUCTIONS WARNING To reduce the risk of INJURY or DEATH. 5. Read the owner's manual. Keep the remote control away from the gate. The gate MUST reverse...
BG790 Manual
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...) 1) REMOVE JUMPER WHEN TIMER TO CLOSE IS USED. 2) REMOVE JUMPER TO CAUSE GATE ARM TO CLOSE IMMEDIATELY UNLESS HOLD OPEN LOOP IS ACTIVATED. (OR) OP 56 1 CL 2 (1 of rating. APPLICATIONS: CONTROL WIRING TYPE L2 MODEL TYPES: FIELD WIRING BG770, BG790 HORSEPOWER: VOLTAGE/PHASE: 1/2 115/230V, 60Hz, 1 PHASE ONLY DRAWING NUMBER: DATE: 08/28/00 01-G1014 REVISION: F-3/20/08 ECN: 08-7165 21 FOR BG770, INTERCHANGE GREEN AND RED WIRES...
...) 1) REMOVE JUMPER WHEN TIMER TO CLOSE IS USED. 2) REMOVE JUMPER TO CAUSE GATE ARM TO CLOSE IMMEDIATELY UNLESS HOLD OPEN LOOP IS ACTIVATED. (OR) OP 56 1 CL 2 (1 of rating. APPLICATIONS: CONTROL WIRING TYPE L2 MODEL TYPES: FIELD WIRING BG770, BG790 HORSEPOWER: VOLTAGE/PHASE: 1/2 115/230V, 60Hz, 1 PHASE ONLY DRAWING NUMBER: DATE: 08/28/00 01-G1014 REVISION: F-3/20/08 ECN: 08-7165 21 FOR BG770, INTERCHANGE GREEN AND RED WIRES...
BG790 Manual
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.../MANUAL O/L IN SEE NOTE 1 (BL) MOTOR (OR) FUSE 3.2A J1 J2 24V SEC. (W) OPEN (OR) (GN) OPEN LOOP-PRESENCE (W) J3-4 J3-6 SENSING EDGE (OPTIONAL) AUX. (W) CLOSE L/S GY 3 7 1 (PUR) (BR) R1 1) REMOVE JUMPER WHEN TIMER TO CLOSE IS USED. 24V COIL (OR) R1 (GN) R2 (GN) (OR) 14 OP 13 (OR) (OR) R1 (Y) CLOSE 5 TD-2 2) REMOVE JUMPER TO CAUSE GATE ARM TO CLOSE IMMEDIATELY UNLESS HOLD OPEN LOOP IS...
.../MANUAL O/L IN SEE NOTE 1 (BL) MOTOR (OR) FUSE 3.2A J1 J2 24V SEC. (W) OPEN (OR) (GN) OPEN LOOP-PRESENCE (W) J3-4 J3-6 SENSING EDGE (OPTIONAL) AUX. (W) CLOSE L/S GY 3 7 1 (PUR) (BR) R1 1) REMOVE JUMPER WHEN TIMER TO CLOSE IS USED. 24V COIL (OR) R1 (GN) R2 (GN) (OR) 14 OP 13 (OR) (OR) R1 (Y) CLOSE 5 TD-2 2) REMOVE JUMPER TO CAUSE GATE ARM TO CLOSE IMMEDIATELY UNLESS HOLD OPEN LOOP IS...
BG790 Manual
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.... RADIO CONTROL WILL OPEN GATE AND REVERSE IF CLOSING. IT WILL NOT STOP OR CLOSE THE GATE. POWER LINES MUST BE CONNECTED TO THE POWER SWITCH. 23 IF THIS JUMPER IS NOT REMOVED, ARM WILL REMAIN OPEN UNTIL A VEHICLE ENTERS AND EXITS THE HOLD OPEN LOOP. 2) ADD JUMPER FROM TERMINAL #8 TO #9 WHENEVER CLOSE BUTTON IS USED. REFER TO INSTRUCTIONS ACCOMPANYING DETECTOR. CONTROL CONNECTION DIAGRAM IT IS IMPORTANT TO READ ALL SAFETY RULES INCLUDED IN THE INSTALLATION MANUAL BEFORE BEGINNING INSTALLATION...
.... RADIO CONTROL WILL OPEN GATE AND REVERSE IF CLOSING. IT WILL NOT STOP OR CLOSE THE GATE. POWER LINES MUST BE CONNECTED TO THE POWER SWITCH. 23 IF THIS JUMPER IS NOT REMOVED, ARM WILL REMAIN OPEN UNTIL A VEHICLE ENTERS AND EXITS THE HOLD OPEN LOOP. 2) ADD JUMPER FROM TERMINAL #8 TO #9 WHENEVER CLOSE BUTTON IS USED. REFER TO INSTRUCTIONS ACCOMPANYING DETECTOR. CONTROL CONNECTION DIAGRAM IT IS IMPORTANT TO READ ALL SAFETY RULES INCLUDED IN THE INSTALLATION MANUAL BEFORE BEGINNING INSTALLATION...
BG790 Manual
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...-G0674J HOW TO ORDER REPAIR PARTS OUR LARGE SERVICE 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. If, during the limited warranty period, this product appears to be defective and covered by this limited warranty, will be advised...
...-G0674J HOW TO ORDER REPAIR PARTS OUR LARGE SERVICE 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. If, during the limited warranty period, this product appears to be defective and covered by this limited warranty, will be advised...