Installation manual
18
GDO-9
Owner Installation Instructions
Programming The Opener
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Setting Travel Limits : Via Control Panel
Step 13.1 - Setting Travel Limits 
NOTE: If PE Beams are to be used they must be installed 
before setting the travel limits. 
WARNING! Use caution when operating the manual 
release with the door open since it may fall rapidly 
due to weak or broken springs, or an improperly 
balanced door. 
CAUTION! Do not disengage the opener to manual 
operation with children, persons or any objects 
including motor vehicles within the doorway.
Engage the C-Rail’s trolley (attached to the door via 
the arms) with the chain index by moving the door. 
If the trolley does not “click” fi rmly onto the chain 
index, ensure that the manual release cord is not in 
the disengaged position by pulling it backwards.
Turn on the power to the opener. The CLOSE LIMIT 
LED will be fl ashing.
Remove the button cover with a blade screwdriver 
(Fig. 22).
Press and hold the MINUS (-) button - the door will  
start closing (Fig. 23).
Release the MINUS (-) button when the door is near 
the desired closed position. Single presses of the 
MINUS (-) button will “inch” the door closed.
If the door overshoots press the PLUS (+) button to 
move the door in the open direction.
When the door is at the desired close position, press 
the SET button to record the close limit position. The 
OPEN LIMIT LED will now fl ash.
Press and hold the PLUS (+) button to open the door 
(Fig. 24).
Release the PLUS (+) button when the door is near the 
desired open position. Single presses of the PLUS (+) 
button will “inch” the door open.
If the door overshoots press the MINUS (-) button to 
move the door in the open direction.
WARNING!  Once the next step is performed, the 
door will automatically close and open to calculate 
force settings. Keep persons and objects clear of the 
door until it stops and the opener sounds a beep.
Press the SET button to store the open limit. Please 
read the above warning. 
Step 13.2 - Resetting Travel Limits
To reset the limits, press and hold the MINUS (-) button for 
6 seconds until the CLOSE LIMIT LED fl ashes quickly. If no 
action is taken within 30 seconds, the opener will return to 
normal operating mode and restore the original settings.
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