Outer
Nut
Lock
Washer
Trolley
Shaft
Inner Nut
Chain
Base of Rail
1/2 Inch
To Tighten
Inner Nut
To Tighten Outer Nut
Mid length of Rail
(1 cm)
ASSEMBLY STEP 5
Tighten the Chain
• Spin the inner nut and lock washer down the
threaded shaft, away from the trolley.
• To tighten the chain, turn outer nut in the direction
shown (Figure 1).
• When the chain is approximately 1/2" (1 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 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 Figure 2
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.
NOTE:
You may notice loosening of chain after
Adjustment (Test the Safety Reversal System).
Check for proper tension and readjust chain if
necessary. Then repeat Adjustment.
Figure 1
Figure 2
INSTALLATION
6
NOTE:
It is recommended that you attach fine mesh or screening across the inside of swinging or sliding doors
in order to prevent intruders from reaching through the bars and releasing the trolley from the door arm or
pressing the door control button.
You have now finished assembling your garage
door opener. Please read the following warnings
before proceeding to the installation section.
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of severe injury or death to persons:
WARNING
CAUTION
WARNING
WARNING
1. READ AND FOLLOW ALL INSTALLATION
INSTRUCTIONS
2. Install ONLY on a door which is in good repair and
moves freely.
3. Disable all locks and remove all ropes connected to
the door before installing the opener. Ropes connected
to a door can cause entanglement and DEATH.
4. If possible, install the opener 7 feet or more above
floor with manual release handle mounted 6 feet
above the floor. Removing the manual release rope
and handle and/or disabling the trolley release lever
can cause SERIOUS PERSONAL INJURY or DEATH.
5. Do not connect the opener to power source until
instructed to do so.
6. Locate the door control push button within sight of
the door at a minimum height of 5 feet where small
children cannot reach and away from all moving
parts of the door. Operating a door control push
button that is located out of sight of the door can
lead to SERIOUS PERSONAL INJURY or DEATH
from entrapment.
7. Install the User Safety Instruction Label on the wall
adjacent to the control button and the Maintenance
Instruction Label in a prominent location on the
inside or alongside of the door.
8. Upon completion of the installation, the door must
reverse when it comes in contact with a 2x4 board
inserted between the wall and the door or between
the swinging door sections (see page 8).
9. Do not wear watches, rings or loose clothing while
installing or servicing an opener. Jewelry or loose
clothing can be caught in the mechanism of the door
or the opener.
10. For opener security, install a guard to protect the rear
panel from being activated from outside the door.