Tighten The Chain; Installation - Chamberlain ATS2113X 1/2 HP Installation Manual

ASSEMBLY STEP 3

Tighten the Chain

1. Spin the inner nut and lock washer down the threaded
shaft, away from the trolley.
2. To tighten the chain, turn outer nut in the direction shown.
As you turn the nut, keep the chain from twisting.
3. When the chain is approximately 1/2" (1.27 cm) 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.
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 fi nished assembling your door operator.
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 door operator ONLY on properly balanced
and lubricated 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 operator.
4. Disable ALL locks and remove ALL ropes connected
to door BEFORE installing operator to avoid
entanglement.
5. Install door operator 7 feet (2.13 m) or more above
fl oor.
6. Mount the emergency release within reach, but at
least 6 feet (1.83 m) above the fl oor and avoiding
contact with vehicles to avoid accidental release.
7. NEVER connect door operator to power source until
instructed to do so.
Figure 1
To Tighten Outer Nut
Trolley
Figure 2
WARNING
WARNING
WARNING WARNING
8. NEVER wear watches, rings or loose clothing while
installing or servicing operator. They could be caught
in door or operator mechanisms.
9. Install wall-mounted door control:
• within sight of the 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 door
control.
11. Place manual release/safety reverse test label in plain
view on inside of 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.
7
Lock
Outer
Washer
Nut
Chain
Base of Rail
Inner
Nut
To Tighten Inner Nut
1/2" (1.27 cm)