FIG. 19
12
FIG. 18
SETTING LIMITS
STEP 15
SETTING TRAVEL LIMIT POSITIONS
IMPORTANT NOTE: The O/S/C button will not function
until the open and close limit positions are set.
15.1 SETTING LIMIT POSITIONS
1.
Plug the drive unit power cord into mains power point and
switch power on.
2.
Check that the door is in the closed position. If not move it
by hand. Pull the manual release cord away from the door to
engage the shuttle.
3.
Engage the shuttle into chain index. If necessary use the Red
Close button or Green Open button to inch the index to engage
the shuttle.
NOTE:
The door and shuttle must be engaged into the chain
index for the door to move.
WARNING: The safety obstruction detection system is
inoperable while limits the open and close drive buttons are
being used and travel limits are not set.
4.
Press and hold the green open button. The door will start
opening. Release the button once you have reached your
desired open limit position. (
Fig. 19
)
To fine tune the open limit position turn the green open limit
adjust screw anticlockwise until the green open limit LED is
illuminated.
5.
Press and hold the red close button (
Fig. 19
). The door will
start closing. Release the button once you have reached your
desired closed limit position.
To fine tune the close limit position turn the red close limit
adjust screw clockwise until the red close limit LED is
illuminated.
6. Use the open and close drive buttons to check that you are
happy with the limits positions. (Do not use O/S/C button). If
an adjustment is necessary turn the limit adjust screws as
required. With a 10 tooth sprocket the shuttle will travel
approximately 20mm for every 1/4 turn and approximately
16mm where the 7 tooth sprocket is fitted.
