Ryobi GD125 Manuel D'utilisation page 48

 Using a 7/16 in. socket, remove the nuts and bracket
securing the rail assembly to the power head.
 Remove the rail assembly and sprocket from the power
head.
To raise and mount the power head:
 Secure the rail assembly to the power head as described
in the Assembly section on page 8.
 Mount the power head to the ceiling bracket as described
in the Installation section on pages 24 and 25.
 Use the door arms to connect the outer trolley to the door
bracket as described in the Installation section on pages
28 and 29.
 Insert the keypad and sensor wires into the appropriate
terminals as described in the Installation section on pages
30 - 32.
 Plug the power head into an AC power supply.
 Make sure the safety sensors are aligned, set the door
travel limits, and test the automatic reversal feature as
described in the Installation section on pages 33 - 39.
 Upon completion of installation and setup of your garage
door opener and controls, perform all of the items on the
Installation Verification Checklist on page 40 to ensure
the garage door opener functions properly.
WARNING:
Failure to complete the Installation Verification Checklist
and verify proper function of the garage door opener can
result in death or serious personal injury.
Nut
Stud
Stud
MAINTENANCE
Nut
Bracket
Stud
Fig. 84
REMOVING THE LIGHT COVER
See Figures 86 - 87.
 Lower the power head and disconnect the rail assembly.
 Place the power head on top of a prop or on the ground
with a towel beneath it with the light cover facing up.
 Loosen and remove the two cover screws on both sides
of the power head.
 Push in the four tabs and gently raise the light cover away
from the power head.
NOTE: Use caution when removing the light cover to
avoid damaging the wires inside.
Rail
Assembly
48 - English
Sprocket
Fig. 85
Cover
Screw
Fig. 86
Light
Cover
Tabs
Fig. 87