OPERATOR’S MANUAL
with Maintenance Information
Maintenance
90
B-14
Test the Pothole Limit Switches and
the Level Sensor
DINGLI requires 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.
Level sensor
1 Remove the platform controls from the
platform.
2 Turn the key switch to platform control.
Pull out the platform and ground red
Emergency Stop button to the on position.
3 Press the drive function select button
4 Move the machine onto a grade which
exceeds the rating of the level sensor.
Refer to the serial label on the machine.
5 Press the lift function select button.
Standing on the up-hill side of the machine,
attempt to raise the platform to
approximately 2.4 m.
⊙
Result: The LED readout screen shows
code LL, an alarm sounds, and the
machine stops lifting after the pothole
guards are deployed. The machine is
functioning properly.
¤
Result: The LED readout screen does not
show code LL, the alarm does not sound
and the machine will continue to lift the
platform after the pothole guards are
deployed. Adjust or replace the level
sensor.
6 Press the drive function select button.
Standing on the up-hill side of the machine,
attempt to steer and drive the machine.
⊙
Result: The LED readout screen shows
code LL, an alarm sounds, and the
machine will not steer or drive. The
machine is functioning properly.
¤
Result: The LED readout screen does not
show code LL, the alarm does not sound
and the steer and drive functions operate.
Adjust or replace the level sensor.
Pothole Limit Switches
7 Lower the platform to the stowed position.
Move the machine onto a firm, level
surface.
8 Place a wooden block approximately 5 cm
tall under the right pothole guard.
9 Press the lift function select button.
Attempt to raise the platform
approximately 2.4m.
⊙
Result: The pothole guard contacts the
block and does not fully deploy, the LED
readout screen shows code 18, an alarm
sounds and the platform will lift to 2.4m or
beyond. The machine is functioning
properly.
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