Chamberlain 7902 K - Manual (Page 11)

11
ASSEMBLY STEP 3
Attach the Rail Brackets
• Align rail brackets to end of rail assembly, as
shown.
• Insert two 1/4"-20 x 5/8" hex bolts and lock nuts.
Tighten securely with a 7/16" socket.
You have now finished assembling your garage
door opener. Please read the following warnings
before proceeding to the installation section.
Rail
Brackets
Rail
Lock Nuts
1/4"-20
Hex
Bolts
1/4"-20x5/8
IMPORTANT INSTALLATION INSTRUCTIONS
1. READ AND FOLLOW ALL INSTALLATION WARNINGS
AND INSTRUCTIONS.
2. Install garage door opener only on properly balanced
and lubricated garage door. An improperly balanced
door may not reverse when required and could result in
SEVERE INJURY or DEATH.
3. All repairs to cables, spring assemblies and other
hardware MUST be made by a trained door systems
technician BEFORE installing opener.
4. Disable all locks and remove all ropes connected to
garage door BEFORE installing opener to avoid
entanglement.
5. Install garage door opener 7 feet or more above floor.
6. Mount emergency release handle 6 feet above floor.
7. NEVER connect garage door opener to power source
until instructed to do so.
8. NEVER wear watches, rings or loose clothing while
installing or servicing opener. They could be caught in
garage door or opener mechanisms.
9. Install wall-mounted garage door control:
• within sight of the garage door
• out of reach of children at minimum height of 5 feet
• away from all moving parts of the door.
10. Place entrapment warning label on wall next to garage
door control.
11. Place manual release/safety reverse test label in plain
view on inside of garage door.
12. Upon completion of installation, test safety reversal
system. Door MUST reverse on contact with a
one-inch high object (or a 2x4 laid flat) on the floor.
To reduce the risk of severe injury or death:
WARNING
WARNING
INSTALLATION
Lock Nut
1/4" - 20 Hex Bolt
1/4" - 20 x 5/8"
HARDWARE SHOWN ACTUAL SIZE