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ASSEMBLY STEP 5
TIGHTEN THE CHAIN
1. Spin the inner nut and lock washer down the trolley threaded
shaft, away from the trolley.
2. To tighten the chain, turn the outer nut in the direction shown
(Figure1).
3. When the chain is approximately 1/4" (6 mm) above the base
of the rail at it's midpoint, re-tighten the inner nut to secure
the adjustment (Figure2).
Sprocket noise can result if chain is too loose. 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 in Figure2
when the door is open, do not re-adjust the chain.
NOTES:
•
During future maintenance, ALWAYS pull the emergency
release handle to disconnect the trolley before adjusting the
chain.
•
You may notice loosening of chain after Adjustment Step2
(Test the Safety Reversal System). Check for proper tension
and readjust chain if necessary. Then repeat Adjustment
Step2.
You have now finished assembling your garage door opener.
Please read the following warnings before proceeding to the
installation section.
Figure 1
Figure 2
Base of Rail
Mid Length of Rail
Chain
1/4" (6 mm)
Outer
Nut
Lock
Washer
Trolley
Threaded
Shaft
Inner Nut
To Tighten
Inner Nut
To Tighten Outer Nut
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. Where possible, install the door opener 7 feet (2.13 m) or more
above the floor.
6. Mount the emergency release within reach, but at least 6 feet
(1.83 m) above the floor and avoiding contact with vehicles to
avoid accidental release.
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 small children at a minimum height of
5feet (1.5m) above floors, landings, steps or any other
adjacent walking surface.
•
away from ALL moving parts of the door.
10. Place entrapment warning label on wall next to garage door
control in a prominent location.
11. Place emergency 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" (3.8cm) high object
(or a 2x4 laid flat) on the floor.
13. DO NOT install on a one-piece door if using devices or features
providing unattended close. Unattended devices and features
are to be used ONLY with sectional doors.
12
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