Table Of Contents - Chamberlain LiftMaster Professional BG770 Owner's Manual
Vehicular gate operator
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Also See for LiftMaster Professional BG770:
- Installation and maintenance manual (32 pages) ,
- Installation instructions (4 pages) ,
- Wiring diagram (4 pages)
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Operator Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operator Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Safety Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . . .4
PREPARATION
Carton Inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Operation Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
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
Vehicle Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Radio Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Card Readers, Keypads or Other. . . . . . . . . . . . . . . . . . . . . . . . . 12
Mounting Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Electrical Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Manual Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Primary Voltage Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Low Voltage Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
General Reference Information . . . . . . . . . . . . . . . . . . . . . . . . . . 15
REPAIR PARTS
Illustrated Parts - Model BG770 . . . . . . . . . . . . . . . . . . . . . . . . . 16
Repair Parts - Model BG770. . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Illustrated Parts - Model BG790 . . . . . . . . . . . . . . . . . . . . . . . . . 18
Repair Parts - Model BG790. . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Limited Bearing Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Grease Turnbuckle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Single Phase Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Three Phase Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Control Connection Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
T A B L E O F C O N T E N T S
. . . . . . . . . . . . . . . . 24
2
IMPORTANT NOTES
• BEFORE attempting to install, operate or maintain the operator,
you MUST read and fully understand this manual and follow
ALL safety instructions.
• These instructions are intended to highlight certain safety
related issues. These instructions are not intended to be
comprehensive. Because each application is unique, it is the
responsibility of the purchaser, designer, installer and end user
to ensure that the total gate system is safe for its intended use
WARNING
Mechanical
WARNING
Electrical
CAUTION
When you see these Safety Symbols and Signal Words on the
following pages, they will alert you to the possibility of SERIOUS
INJURY or DEATH if you do not comply with the warnings that
accompany them. The hazard may come from something
mechanical or from electric shock. Read the warnings carefully.
When you see this Signal Word on the following pages, it will
alert you to the possibility of damage to your gate and/or the gate
operator if you do not comply with the cautionary statements that
accompany it. Read them carefully.
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