LiftMaster BG770 Support Question
LiftMaster BG770 Support Question
Find answers below for this question about LiftMaster BG770.Need a LiftMaster BG770 manual? We have 1 online manual for this item!
Question posted by rwilson15892 on January 8th, 2013
What Is The Purpose Of Ir Relay In The Power Circuit
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Related LiftMaster BG770 Manual Pages
BG790 Manual - Page 2
...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 ... this Signal Word on the following pages, it . Model BG770 16 Repair Parts - Model BG770 17 Illustrated Parts - Model BG790 19
MAINTENANCE
Limited Bearing Lubrication...
BG790 Manual - Page 3
...open (not provided). CONTROL CIRCUIT Class II, 24Vac
LIMIT SWITCHES Adjustable, driven limit switches, operate in vertical position. MOUNTING Pad mount
Model BG770... 1/2 Horsepower
POWER
Line voltage is designated by removal of a loop detector to open until CLOSE button... open will lower automatically unless hold open .
Gate will raise gate. ELECTRICAL BOX NEMA 1 general purpose ...
BG790 Manual - Page 4
... installers and users must be located and its function as at any moving . All openings of a vertical barrier (arm).
4 One or more contact sensors shall be located ...of two (2) WARNING SIGNS shall be properly installed and work freely in contact with a separate access opening shall be located where the transmission of the gate operator.
8. For a gate operator utilizing a ...
BG790 Manual - Page 5
... location has required clearance for control equipment and run . Run electrical power to the site according to the dimensional drawings on model BG790). Damage to the instructions in the OFF position. MODEL BG770 PACKING LIST
PART NUMBER DESCRIPTION
QTY
02-102
Open/Close Push Button
1
07-8007
Gate Arm Hub
1
10-8007M
Gate...
BG790 Manual - Page 7
...result in electrical shock and SERIOUS INJURY. MODEL BG770: Hang electrical enclosure on the two screws provided on ...• BEFORE installing power wiring or control stations be removed from belt and limit switches.
4. A 2-button control station (OPEN/CLOSE) is of... dedicated circuit and well protected. However, the AUTO/MANUAL switch should be visible and clearly labeled.
• ALL power and...
BG790 Manual - Page 8
...belt and drive shaft or SERIOUS INJURY may be opened by removing the two wing nuts from underneath, inside the cabinet.
MODEL BG770: STANDARD ARM Attach arm to the arm hub flange...ATTACHMENT
For easier access during some of the steps. MODEL BG770: OPTIONAL ARM Attach arm to the arm hub flange (Figure 5). Be sure to DISCONNECT power while installing the arm attachment. Figure 5
Gate Arm
Hub...
BG790 Manual - Page 9
...to the arms for travel of the steps. WARNING
When following the procedure below, the motor belt will turn the power on. Figure 8
Extension Arm
(2) 1/2"-13 x 3" Bolts (2) 1/2" Flat Washers
Wishbone Arm
(2) 1/2"-13 Hex... clearance for center support.
4. Assemble the two 3/8" threaded rods to DISCONNECT power while installing the arm attachment. Figure 7
18-5/8"
30" Radius
Wishbone Arm ...
BG790 Manual - Page 10
... as necessary until the gate arm is in the desired horizontal position. CAUTION
Turn off power BEFORE making ANY adjustments. This is the lowest point of travel and should be preset...other similar tool into the hole in Closed Position
10 INSTALLATION
ARM AND TURNBUCKLE SHAFT ADJUSTMENTS
MODEL BG770 ADJUSTMENTS 1. If necessary, rotate the pulley on the motor by hand until the
upper and ...
BG790 Manual - Page 11
... activate just before the CLOSE switch.
2. This adjustment may have to adjust the cam on power and running the unit for the first time. If you made an adjustment to the CLOSE...Position the AUXILIARY CLOSE cam slightly ahead of the CLOSE cam. Retighten the cam. Figure 12
Open Limit Switch Close Limit Switch Auxiliary Close Limit Switch
AUXILIARY CLOSE LIMIT SWITCH
The AUXILIARY CLOSE limit...
BG790 Manual - Page 12
... BG770 and BG790. NOTE: Most access control devices have this , connect the radio receiver power ...door radio receiver has a three wire connection marked 1, 2, 3. Do not use a radio control (such as required by the particular device. CONTROL CONNECTION TURN OFF POWER...power source. OPEN LOOP DETECTOR 1. Snap the detector onto one device may power the unit from the gate control circuit....
BG790 Manual - Page 13
.... On one phase units, the reset button is provided with an ON/OFF power switch. ON/OFF POWER SWITCH
The gate is located on the right side of the two button control ...MANUAL OPERATION
ACCESS CONTROL "EMERGENCY" BYPASS
To open the gate in the up position, and no other means if provided. OPERATING INSTRUCTIONS
ELECTRICAL OPERATION
The BG770 and BG790 barrier gate operators are designed to ...
BG790 Manual - Page 14
... you get a reading as an access control device (used to open or close . • The operator will not open. If the voltage reading is okay from the operator. Using ...• Power • Accessories • Operator's Primary Voltage • Operator's Low Voltage
POWER
Always use extreme caution!
If there are credited to run . • The operator runs slow. • Circuit breakers or...
BG790 Manual - Page 15
...circuit board at terminals 3 and 6. These limit switches tell the operator to check is either in either the full open and one for open... you have a bad power disconnect and it at ...circuit breaker. There are S.P.D.T. (single pole, double throw). If you cannot correct the problem or if you feel you should get a continuity reading. Did the operator run in the controller (Model BG770...
BG790 Manual - Page 17
.../230Vac - 10-60Hz
8
Used on: BG770-50-11,
1
BG770-50-21, BG770-50-81
1
20-3050B-4E 1/2HP - 208/230/460Vac - 30-60Hz
1
Used on: BG770-50-23,
1
BG770-50-43, BG770-50-83
6
20-3050M-5 1/2HP - 575Vac - 30-60Hz
12
Used on: BG770-50-53
4
47 24-XXX-X Relay
1
24-115-1 115Vac Relay
1
Used on: All 115Vac, 10...
BG790 Manual - Page 19
...Rocker Switch
1
Toggle/Outlet Combination
1
24Vac DPDT Relay
1
3 PDT 24V Relay
1
Switch Box
1
Duplex Outlet Cover
1
Gear...
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...Washer
2
91-G0128 Electrical Enclosure
1
94-G0233 Power Cable
1
94-G0234 Motor Cable
1
VARIABLE PARTS...
BG790 Manual - Page 20
... CROSS THE PATH OF THE MOVING GATE.
4. After adjusting the force or the limit of SEVERE INJURY or DEATH:
1. Read the owner's manual. Disconnect ALL power BEFORE performing ANY maintenance.
9. Clean the operator if needed.
• Severe or high cycle usage will require more frequent maintenance checks.
• It is suggested...
BG790 Manual - Page 21
...)
J4-10
P4
OPEN LOOP LOOP WIRES (OPTIONAL)
HOLD OPEN LOOP LOOP WIRES (OPTIONAL)
(R)
J3-7 (R)
J4-7
24V OPEN LOOP
24V HOLD OPEN LOOP
(BK)
(BK)
J4-8
J3-8
(OPTIONAL EQUIPMENT)
1
NOTES:
1) TRANSFORMER PRIMARY VOLTAGE SAME AS OPERATOR LINE VOLTAGE 24V SECONDARY.
2) RELAY COIL VOLTAGE SAME AS OPERATOR LINE VOLTAGE.
3) WE RECOMMEND USING A DEDICATED CIRCUIT BREAKER FOR EACH...
BG790 Manual - Page 22
... CONNECTION SAME
(GN)
AS INCOMING POWER
(BL) (R) (W) (BL)
...OPEN LOOP
(R)
24V HOLD OPEN LOOP
J3-8
(R) J4-8
(OPTIONAL EQUIPMENT)
NOTES:
1) TRANSFORMER PRIMARY VOLTAGE SAME AS OPERATOR LINE VOLTAGE 24V SECONDARY
2) WE RECOMMEND USING A DEDICATED CIRCUIT BREAKER FOR EACH OPERATOR.
1
APPLICATIONS: CONTROL WIRING TYPE
FIELD WIRING & ADJUSTMENTS
MODEL TYPES: HORSEPOWER: VOLTAGE/PHASE:
BG770...
BG790 Manual - Page 23
... DETECTORS NOT SUPPLIED BY THE FACTORY
RADIO CONTROL
CONNECTIONS FOR STANDARD 3-WIRE 24 VAC RADIO CONTROL
PRESENCE CONTACT OF LOOP TO OPEN
PRESENCE CONTACT OF LOOP TO HOLD OPEN
LOOP WIRES AND POWER FOR LOOP DETECTORS SHOULD BE DIRECTLY WIRED TO DETECTOR ITSELF. REFER TO INSTRUCTIONS ACCOMPANYING DETECTOR. IT WILL
NOT STOP OR...
BG790 Manual - Page 24
...; 2010, The Chamberlain Group, Inc. ALL IMPLIED WARRANTIES FOR THE PRODUCT, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE TWO YEAR LIMITED WARRANTY PERIOD SET FORTH ABOVE, AND NO IMPLIED WARRANTIES WILL EXIST OR APPLY AFTER SUCH PERIOD...
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