Tighten The Chain; Installation - LiftMaster SECURITY+ 1215EM FS2 Manual Del Propietário

ASSEMBLY STEP 5

Tighten the Chain

• Spin the inner nut and lock washer down the trolley
threaded shaft, away from the trolley.
• To tighten the chain, turn outer nut in the direction
shown. AS YOU TURN THE NUT, KEEP THE CHAIN
FROM TWISTING.
• When the chain is approximately 13 mm above the
base of the rail at its midpoint, re-tighten the inner nut
to secure the adjustment.
Sprocket noise can result if chain is either too loose
or too tight.
NOTE: When installation is complete, you may notice
some chain droop with the door closed. This is normal. If
the chain returns to the position shown when the door is
open, do not re-adjust the chain.
NOTE: During future maintenance, ALWAYS pull the
emergency release handle to disconnect trolley before
adjusting chain.
You have now finished assembling your garage door
opener. Please read the following warnings before
proceeding to the installation section.

INSTALLATION

IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
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 (2.13 m) or more above
fl oor.
6. Mount the emergency release within reach, but at least 6 feet
(1.8 m) above the fl oor and avoiding contact with vehicles to
avoid accidental release.
7. NEVER connect garage door opener to power source until
instructed to do so.
To Tighten Outer Nut
WARNING
WARNING
WARNING WARNING
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 (1.5 m).
• 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 1-1/2" (3.8 cm) high
object (or a 2x4 laid fl at) on the fl oor.
15
Lock
Washer
Outer Nut
Inner Nut
To Tighten
Inner Nut
Chain
13 mm
Base of Rail