Table Of Contents - Chamberlain LiftMaster BG770 Installation And Maintenance Manual

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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:
Arm Fabrication _____________________________________________________________ 12
Step 2:
Wiring Connections __________________________________________________________ 13
Step 3:
Arm Attachment _____________________________________________________________ 14
Step 4:
Arm and Turnbuckle Shaft Adjustments __________________________________________ 16
Step 5:
Limit Switch Adjustments _____________________________________________________ 18
Step 6:
Optional Accessories _____________________________________________________ 19
Vehicle Detectors ___________________________________________________________________ 19
Radio Controls______________________________________________________________________ 19
Card Readers, Keypads, or other________________________________________________________ 20
Operating Instructions ____________________________________________________ 21
Electrical Operation__________________________________________________________________ 21
Manual Operation ___________________________________________________________________ 21
Troubleshooting _________________________________________________________ 22
1. Power___________________________________________________________________________ 22
2. Accessories ______________________________________________________________________ 23
3. Primary Voltage Circuit ____________________________________________________________ 23
4. Low Voltage Circuit _______________________________________________________________ 24
General Reference Information_________________________________________________________ 25
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