14
GDO-8 Shed Master®
Owner Installation Instructions
6.3 Setting datum position
1. Switch the opener into manual mode
(Fig. 08).
2. Move the door by hand to an approximately mid
open position.
3. Re-engage the opener.
4. Using a small blade screw driver turn the datum
adjust screw slowly until the yellow status LED just
illuminates.
NOTE:
If the status LED is already illuminated when
power is connected then turn the datum adjust screw
until the LED goes off then turn back one notch to
illuminate again.
6.4 Set the Limits Positions
Press and hold the MINUS (-) button until the door
reaches the desired close limit position. Single
presses will the inch the door closed
(Fig. 09)
.
Press the LIMIT SET button to store the close position
into memory
(Fig. 09)
Press and hold the PLUS (+) button until the door
reaches the desired open limit position. Single
presses will the inch the door open
(Fig. 09)
.
IMPORTANT WARNING:
The door will
automatically close, open and close again
once
Step 6.4(4) is performed
. Ensure that no people
or objects are in the door’s path.
Press the LIMIT SET button to store the close position
into memory
(Fig. 09)
.
The door will now automatically close and open to
calculate the safety obstruction settings. After this, the
opener can be operated with the OPERATE button.
6.5 Resetting the Door Limit Positions
Limit positions can be deleted by the following steps:
Press and hold the MINUS (-) button for six (6)
seconds until you hear three beeps and the CLOSE
LIMIT LED starts to fl ash.
Release the CLOSE button.
Repeat Step 6.4 to set new travel limit positions.
1.
2.
3.
4.
5.
1.
2.
3.
08
fi g
Setting Limits
Pull handle down to
disengage or re-engage
09
fi g
