51
OPERATOR’S MANUAL
with Maintenance Information
Maintenance
Checklist C Procedures
C-1
Test the Platform Overload System (if
equipped)
We require that this procedure be performed
every 500 hours or six months, whichever
comes first OR when the machine fails to lift
the maximum rated load.
Testing the platform overload system regularly
is essential to safe machine operation.
Continued use of an improperly operating
platform overload system could result in the
system not sensing an overloaded platform
condition. Machine stability could be
compromised resulting in the machine tipping
over.
The platform overload system is designed to
prevent machine operation in the event the
platform is overloaded. Models equipped with
the platform overload option are provided with
two additional machine control components:
the overload pressure switch and a tilt sensor.
The overload pressure switch, which is
adjustable and located at the barrel-end of the
lift cylinder, is used to determine when the
hydraulic lift cylinder requires too much
pressure to support the load inside the
platform. When this occurs, the pressure
switch will send a signal to the ECU, which will
not allow the machine to function until the
extra weight is removed from the platform.
The tilt sensor, located in the inner scissor arm
1, is used to determine the tilt of scissor, than
to measure the height of platform.
a overload pressure switch
b tilt sensor
c up limit switch
1 Turn the key switch to ground control and
raise the platform approximately 1.5 m
from the ground.
2 Lift the safety arm, move it to the center of
the scissor arm and rotate the safety arm
away from the machine and let it hang
down.
3 Lower the platform onto the safety arm.
Crushing hazard. Keep
hands clear of the safety arm when lowering
the platform.
4 Loose the screw of the up limited switch.
Remove the up limited switch from the
guide track.
5 Fully raise the platform. Release thetoggle
switch.
⊙
Result: The alarm should sound. The
a
b
c
