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Popular LiftMaster BG790 Manual Pages
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
BG790 Manual - Page 2
... 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 BG770 17...
BG790 Manual - Page 3
... or manual reset (1 phase operators) thermal overload. Enclosure removable from operator.
POWER ON/OFF SWITCH Enclosed toggle switch, HP rated. Gate will lower automatically unless hold open . MOUNTING Pad mount
Model BG770
17"
17"
Up to 15' DIMENSIONS
35" 44"
Model BG790 Counterweighted 17"
Wishbone Arm
17" Up to 24'
ARM SPEED MODEL BG770: Opens in 4 seconds MODEL BG790: Opens in 11...
BG790 Manual - Page 5
...to components may not run is the proper voltage, phase, frequency, and amperage to gate nameplate located inside service cover) accurately matches the operator that the following parts are included with the freight carrier.
2.
Damage to the instructions in this manual for installation of factory-provided optional radio controls (see Optional Accessories on page 3.
2. Refer to supply...
BG790 Manual - Page 6
...Subtract the height of 24'.
1. Secure operator with paint or adhesive backed tape as required by local codes.
3. Finish arm with exterior grade paint and stripe with four concrete anchors (not provided).
13" 22"
ARM FABRICATION
MODEL BG770 (SINGLE ARM)
If you to ceiling (see Figure 5). Figure 3
MODEL BG790 (WISHBONE ARM)
5-12"
A 24' wishbone arm is desired, the extension may be 59...
BG790 Manual - Page 7
... operator. The enclosure (shipped loose) may result in the electrical cabinet for installation of the power supply ground wire. Refer to the wiring diagram supplied inside the cabinet. A 2-button control station (OPEN/CLOSE) is provided in the connections described below . If you install an optional reversing edge BEFORE proceeding with every BG770 and BG790 barrier gate...
BG790 Manual - Page 12
... PLUG-IN DETECTORS LiftMaster P/N 71-416-7NH = 24V PLEASE NOTE: Previous models used in conjunction with the radio connections. Snap the detector onto one set of the four board mount
standoffs located on the inside of the electrical cabinet. Connect the two loop wires to the gate.
Snap the detector onto one set of the...
BG790 Manual - Page 13
.... OVERLOAD PROTECTION
The motor is located on the right side of the electrical cabinet.
Flip the AUTO/MANUAL switch to trip, consult a qualified service company. OPERATING INSTRUCTIONS
ELECTRICAL OPERATION
The BG770 and BG790 barrier gate operators are designed to provide years of moving parts. The motor will trip when the motor temperature is provided with an ON/OFF power switch.
BG790 Manual - Page 15
... contactor or the motor. Very carefully, using a screwdriver with the operator. Did the operator run in the controller (Model BG770 uses a manual reset overload). If it did not, then the problem is power, then check for close side of the contactor. It if did , the problem may have a distributor or dealer, then contact us for open...
BG790 Manual - Page 17
...Spacer Barrier Gate Gear Reducer 8 Position Terminal Block 10 Position Terminal Block Single Arm (...50-53
4
47 24-XXX-X Relay
1
24-115-1 115Vac Relay
1
Used on: All 115Vac, 10 Models
1
24-230-5 208/230Vac Relay
14
Used on: All 208/230Vac,
1
10 Models
1
48 25-XXXX Fuse
1
1
25-2006
6A Fuse
8 1 2
25-2010
Used on: BG770-50-21 10A Fuse
1
Used on: BG770-50-11
17 REPAIR PARTS...
BG790 Manual - Page 19
...
8 Position Terminal Block
1
Wishbone Arm
1
Counterweight Kit
1
6-32 ...NH31-06CP 5/16-18 x 3/8 Set Screw
1
82-PX06-06T 6-32...BG790-50-53
48 24-XXX-X Relay
1
24-115-1 115Vac Relay
Used on: All 115Vac, 10 Models
24-230-5 208/230Vac Relay
Used on: All 208/230Vac,
10 Models
49 25-XXXX Fuse
1
25-2006
6A Fuse
Used on: BG790-50-21
25-2010
10A Fuse
Used on: BG790-50-11
19 REPAIR PARTS...
BG790 Manual - Page 20
... or DEATH:
1. ALL maintenance MUST be added to gate hardware.
7. Using a VOM, double check the incoming voltage to the operator to make repairs to the site. Never use Mobilube C SAE140 or equivalent. Read the owner's manual.
Unless a severe problem causes a seal to adjust and retest the gate operator properly can increase the risk of maintenance. The gear...
BG790 Manual - Page 21
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 WIRING DIAGRAM
To protect against fire and electrocution: • DISCONNECT power BEFORE installing
or servicing operator. • Replace ONLY with fuse of same...
BG790 Manual - Page 22
...EQUIPMENT)
(YEL) 4
(YEL)
AUTO/MANUAL
O/L IN
SEE NOTE 1
(BL) ...CAUSE GATE ARM ...MODEL TYPES: HORSEPOWER: VOLTAGE/PHASE:
BG770 (PG) BG790 (HBG) 1/2 208/230/480/575V
DRAWING NUMBER:
01-G1015
DATE: 08/28/00 REVISION: E-3/20/08 ECN: 08-7165
22 WIRING DIAGRAM
(1 of 2)
To protect against fire and electrocution: • DISCONNECT power BEFORE installing
or servicing operator. • Replace...
BG790 Manual - Page 24
...to state.
01-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. Technical Support Group 6050 Country Club Road Tucson...
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