Ryobi GD125 Manual Del Operador página 47

WARNING:
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc., come in contact
with plastic parts. Chemicals can damage, weaken or
destroy plastic which could result in serious personal
injury.
POWER SUPPLY CORD REPLACEMENT
WARNING:
If replacement of the power supply cord is necessary,
this must be done by the manufacturer in order to avoid
a safety hazard.
LOWERING THE POWER HEAD AND REMOVING
THE RAIL ASSEMBLY
See Figures 80 - 85.
It is recommended that you lower the power head and
disconnect it from the rail assembly before performing any
maintenance. Use extreme caution if maintenance is
performed while the unit is mounted to a ceiling.
 Lower the garage door completely.
 Place a 6 or 7 foot ladder directly beneath the power head
and climb up to gain access to the unit.
Wires
MAINTENANCE
Hitch
Pin
Clevis
Pin
Fig. 80
Wires
Fig. 81
 Unplug the power head from AC power supply.
 Remove the clevis pin and hitch pin securing the door
arm to the outer trolley.
 Disconnect the wires for the keypad and sensors.
 Using a 7/16 in. socket, remove bolts and nuts connecting
the power head to the mounting straps.
 Carefully lower the power head and place it on top of the
ladder.
 With someone's help, slowly descend the ladder and
bring the power head down with you.
NOTE: Be careful when lowering the power head. Do
not allow the power head and rail assembly to fall or pull
away from the header bracket.
 While holding the power head, have someone remove
the 6 or 7 foot ladder.
 Place the power head on top of a prop or on the ground
with a towel beneath it.
Rail
Assembly
47 - English
Mounting
Strap
Fig. 82
Power
Head
Fig. 83