Chamberlain LiftMaster BG770 Installation And Maintenance Manual
Chamberlain barrier gate operator installation and maintenance manual
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Also See for LiftMaster BG770:
- Installation and maintenance manual (32 pages) ,
- Owner's manual (24 pages) ,
- Installation instructions (4 pages)
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Summary of Contents for Chamberlain LiftMaster BG770
- Page 1 Installation and Maintenance Manual Barrier Gate Operator Models BG770 & BG790 Doc 01-G0674 Rev E...
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Page 2: Table Of Contents
Contents Contents General Product Information _______________________________________________ 4 Specifications _______________________________________________________________________ 4 Safety Instructions ________________________________________________________ 6 Before Installation ____________________________________________________________________ 6 During Installation____________________________________________________________________ 6 After Installation _____________________________________________________________________ 7 Preparing the Installation __________________________________________________ 8 Unpack Carton_______________________________________________________________________ 8 Preparing the Site ____________________________________________________________________ 9 Preparing the Operator _______________________________________________________________ 10 Installation _____________________________________________________________ 11 Mounting __________________________________________________________________ 11 Step 1:... -
Page 3: Contents
Required Maintenance-Normal Usage_____________________________26 BG770 Drawing and Parts List______________________________________________ 27 BG770 Exploded View _______________________________________________________________ 27 BG770 Parts List ____________________________________________________________________ 28 BG790 Drawing and Parts List______________________________________________ 29 BG790 Exploded View _______________________________________________________________ 29 BG790 Parts List ____________________________________________________________________ 30 01-G1014 Wiring Diagram _________________________________________________ 31... -
Page 4: General Product Information
General Product Information Specifications Specifications are for both model BG770 and model BG790 unless otherwise noted. POWER Line voltage is designated by third suffix of gate part number. For amp draw, see motor nameplate. -11; 115VAC, 1 Phase, 60Hz -21; 230VAC, 1 Phase, 60Hz -81;... -
Page 5: Operation
SPEED REDUCTION Wormgear-in-oil-bath, 60:1 ARM TYPE MODEL BG770: One piece type to 12 feet. MODEL BG790: Counterweighted wishbone type to 24 feet. ARM SPEED MODEL BG770: Opens in 4 seconds MODEL BG790: Opens in 11 seconds LUBRICATION Permanently lubricated bearings in motor. -
Page 6: Safety Instructions
Safety Instructions WARNING To reduce the risk of injury or death, it is important to read all safety instructions. These safety instructions have been prepared by LiftMaster, the manufacturer of the barrier gate. As the manufacturer of only part of the total barrier gate system, we do not know what type of controls or safety equipment that has been selected as part of your system. -
Page 7: After Installation
After Installation ! Be sure that the operator, controls, and safety devices have been tested and are functioning properly. ! Review the operation of the gate and safety equipment with the owner or end user. Be sure that the end user is aware of all safety instructions and hazards of the operating system. ! Inform the owner or end user that the barrier gate and all control and safety equipment should be maintained regularly. -
Page 8: Preparing The Installation
Damage claims must be filed with the freight carrier. Check that the nameplate data (inside service cover) accurately matches the operator that was ordered. Verify that the following parts are included with the standard unit. MODEL BG770 PACKING LIST PART NUMBER 02-102 07-8007... -
Page 9: Preparing The Site
Preparing the Site Be sure that selected gate location has required clearance for arm movement (and counterweights on model BG790). Refer to the dimensional drawings, Figure 1 and Figure 2 on page 4. Run electrical power to the site according to local electrical codes. See Table 3 below for correct wire size and length of run (see also Figure 3). -
Page 10: Preparing The Operator
Preparing the Operator CAUTION Never open electrical cabinet cover unless power is off. Electrical shock and serious injury could result. Remove the wood base from the unit and discard. Locate the keys for the access panel (taped to the arm mounting flange) and remove. Open the side access panel and check the position of the power ON/OFF switch. -
Page 11: Installation
Installation Mounting Step 1: Layout the concrete pad as detailed in Figure 4. Be sure to locate electrical conduit inside the hatched 14" x 13" area. Excavate required area for pad and conduit. Pad depth should be below the frost line, or as required by local codes. -
Page 12: Step 2: Arm Fabrication
Arm Fabrication Step 2: MODEL BG770 (SINGLE ARM) If you are making the arm yourself, refer to Figure 5 and its suggestions for the single arm design. Drill four 1/2" diameter holes using the arm clamp as a template. Tapering the wood as shown helps reduce the weight and allows you to reduce any warping common with long lengths of lumber. -
Page 13: Step 3: Wiring Connections
A two button control station (OPEN/CLOSE) is provided as standard equipment with every BG770 and BG790 barrier gate. If you are not using automatic controls to control the gate, the two button station may be connected as shown on the wiring diagram supplied with the gate to control the gate manually. -
Page 14: Step 4: Arm Attachment
Keep hands and tools out of the gate cabinet and away from the belt and drive shaft or serious injury may result. Be sure to disconnect power while installing the arm attachment. MODEL BG770: STANDARD ARM Attach arm to the arm hub flange as shown in Figure 7. Hex Bolt 1/2”-13 x 2-1/4”... - Page 15 BG790: WISHBONE COUNTERWEIGHTED ARM Attach left and right arms to the arm hub flanges as shown and described below. Bolt counterweights to ends of arms clamps as shown. Use Caution lifting 57lb. weights. Bend and fasten the two arms together as shown in Figure 10.
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Page 16: Step 5: Arm And Turnbuckle Shaft Adjustments
CCW as necessary until the gate arm is in the desired horizontal position. Retighten jam nuts. Pulley Crank Arm BG770 TURNBUCKLE SHAFT ALIGNMENT If necessary align turnbuckle shaft with center of crank arm for lowest point of travel of pivot arm (see Figure 12). Pivot Arm... - Page 17 MODEL BG790 ADJUSTMENTS If necessary, rotate the pulley on the motor by hand until the upper and lower cranks are in a vertical position (see Figure 13). This is the lowest point of travel and should be preset in this position at the factory. If the arm is not level, loosen the jam nuts on both the top and bottom end of the turnbuckle shaft.
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Page 18: Step 6: Limit Switch Adjustments
Limit Switch Adjustments Step 6: Auxiliary Close Limit Switch CLOSE LIMIT SWITCH The CLOSE limit switch is preset at the factory. If you rotated the pulley in section Arm and Turnbuckle Shaft Adjustments (page 16), you will need to reset the cam on the CLOSE limit switch. -
Page 19: Optional Accessories
Connect the loop wires to terminals P3 and P4 as shown on the wiring diagram. Radio Controls All types of standard radio controls may be used in conjunction with model BG770 and BG790. If the receiver is mounted inside of the gate enclosure, a commercial coaxial antenna should be used and extended through the side of the cabinet. -
Page 20: Card Readers, Keypads, Or Other
Card Readers, Keypads, or other Almost all types of access control devices may be connected to models BG770 and BG790. More than one device may be connected in parallel. All devices connected according to the instructions below will open the gate and reverse the gate if it is closing. -
Page 21: Operating Instructions
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 power switch. -
Page 22: Troubleshooting
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 1. Power Always use extreme caution! Some possible symptoms of power problems include: The obvious one is –... -
Page 23: Accessories
2. Accessories Add-on accessories can create many of the problems that are credited to the operator. Many applications have more than one accessory item attached to the operator and some of these items even draw their power from the operator. Some of the symptoms that can show up because of accessories: The operator won’t close. -
Page 24: Low Voltage Circuit
NOTE: Some motors have the overload built into the motor itself, while other units have a separate overload in the controller (Model BG770 uses a manual reset overload). 4. Low Voltage Circuit The first thing to check is the circuit breaker. -
Page 25: General Reference Information
Troubleshooting General Reference Information THE GATE Double check the gate and its related hardware. Does the gate move freely? Are there unprotected pinch points? - If yes, then correct. WIRING DIAGRAM Always reference the wiring diagram that was supplied with the operator. Note that some of the accessory items may have their own wiring diagram. -
Page 26: Required Maintenance-Normal Usage
Required Maintenance-Normal Usage ITEM External safety systems Gate caution signs Drive chain (see notes) Sprockets & pulleys Gate Accessories Electrical Frame bolts Total unit CAUTION When servicing, always disconnect operator from electrical power supply. NOTES Inspection and service should always be performed anytime a malfunction is observed or suspected. -
Page 27: Bg770 Drawing And Parts List
BG770 Drawing and Parts List BG770 Drawing and Parts List BG770 Exploded View Doc 01-G0674 Rev E... -
Page 28: Bg770 Parts List
PARTS HAVING ONE OR MORE X IN THE PART NO. VARY FROM MODEL TO MODEL. SEE “VARIABLE PARTS” BELOW. VARIABLE 20-1050B-2 20-XXXX 20-3050B-4E 20-3050M-5 24-115-1 24-XXXX 24-230-5 25-2006 25-2010 25-XXXX BG770 Drawing and Parts List STANDARD PARTS PART NO. QTY. 80-207-36 (N) 80-5001 (N) 80-575 80-8001 80-G0186 (N) 80-G0187 (N) 81-8000 (N) 81-PX06-06T (N) -
Page 29: Bg790 Drawing And Parts List
BG790 Drawing and Parts List BG790 Drawing and Parts List BG790 Exploded View Figure 16 Doc 01-G0674 Rev E... -
Page 30: Bg790 Parts List
BG790 Parts List PART NO. QTY. DESCRIPTION 02-102 (N) OPEN/CLOSE KEY SWITCH 03-8024-K 3 POLE CONTACTOR 03-ABDIN-4 (N) DIN RAIL 07-8007 ARM HUB 07-8058 CRANK LINK 07-8063 UPPER CRANK 07-8064 LOWER CRANK 10-8014 SWITCH BRACKET 10-8016-T TAN TOP COVER 10-8017-T TAN ACCESS COVER 10-8021 ELECTRICAL PANEL... -
Page 31: 01-G1014 Wiring Diagram
2) RELAY COIL VOLTAGE SAME AS OPERATOR LINE VOLTAGE. 3) WE RECOMMEND USING A DEDICATED CIRCUIT BREAKER FOR EACH OPERATOR. WIRING DIAGRAM APPLICATIONS: CONTROL WIRING TYPE L2 FIELD WIRING BG770, BG790 MODEL TYPES: HORSEPOWER: VOLTAGE/PHASE: 115/230V, 60Hz, 1 PHASE ONLY DRAWING NUMBER:... -
Page 32: 01-G1014 Field Wiring Diagram
IT IS IMPORTANT TO READ ALL SAFETY RULES INCLUDED IN THE INSTALLATION MANUAL BEFORE BEGINNING INSTALLATION. FAILURE TO COMPLY WITH THE SAFETY INSTRUCTIONS MAY RESULT IN SERIOUS PERSONAL INJURY OR PROPERTY DAMAGE. CONTROL WIRING NOTE #1 SENSING EDGE OPEN BUTTON OR OTHER OPEN CONTROL ELECTRICAL CABINET...
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