49
OPERATOR’S MANUAL
with Maintenance Information
Maintenance
B-13
Test the Down Limit Switch
We require that this procedure be performed
every 250 hours or quarterly, whichever comes
first.
Maintaining the limit switches is essential to
safe operation and good machine
performance. Operating the machine with a
faulty limit switch could result in reduced
machine performance and a potentially unsafe
operating condition.
Perform these procedures with the machine on
a firm, level surface that is free of obstructions.
Perform this test from the ground with the
platform controller.
1 Remove the platform controls from the
platform.
2 Turn the key switch to platform control.
3 Press the drive speed button.
⊙
Result: the light will turn on. The machine is
functioning properly.
¤
Result: the light will turn off Replace the
down limit switch.
4 Press the Lift function select button
5 Raise the platform 1.5 m.
6 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.
7 Lower the platform onto the safety arm.
Crushing hazard. Keep hands
clear of the safety arm when lowering the
platform.
8 Rotate the roller arm of the limit switch 90
degrees in an upwards direction. Activate
the switch contacts.
⊙
Result: the drive speed button light will turn
on when press the drive speed button. The
machine is functioning properly.
¤
Result: the drive speed button light will turn
off when press the drive speed button.
Replace the down limit switch.
9 Raise the platform and return the safety
arm to the stowed position.
10 Lower the platform to the stowed position.