Chapter 8 – Prestart Inspection
24 S2646E/S3246E – 0410051
3. Place the controls selector downward in the lower
controls position.
Figure 8.11 – Lower Controls
Danger
Pinch points may exist between moving compo-
nents. Death or serious injury will result from be-
coming trapped between components, buildings,
structures, or other obstacles. Make sure all person-
nel stand clear of the aerial platform while perform-
ing the prestart inspection.
Test the operation of the platform raise/lower switch in
both directions.
Place the battery disconnect switch in the off position.
The platform should not raise or lower with the discon-
nect in this position.
Emergency Stop
Push the emergency stop button in to turn off the electri-
cal power. The lower control functions should not operate
with the emergency stop in this position.
Lowering Alarm
Raise the platform and then lower it to ensure that the
alarm sounds to warn personnel in the area that the plat-
form is lowering.
Pothole Protector Interlock
Perform this test using the lower controls.
1. Stow the aerial platform on a smooth, flat, level con-
crete slab.
2. Remove all persons and materials from the platform.
3. With the trays closed, check the ground clearance
under the pothole protector skids (refer to Figure 8.12).
Clearance should be at about 4″ (10.1 cm) on both
sides of the aerial platform.
Tires and Wheels
Visually inspect the tires (refer to Figure 8.9). They should
be smooth without any cuts, gouges, or missing rubber
that might affect aerial platform stability.
Figure 8.9 – Tires and Wheels
Check the wheel lug nuts to see that none are missing,
damaged, or loose.
Ground Strap
Make certain the ground strap (refer to Figure 8.10) is
securely fastened to the chassis. It should be long enough
to contact the ground surface to eliminate static electric-
ity from the machine.
Figure 8.10 – Rear of Chassis
Lower Control Station
With no personnel in the platform, test the operation of
each control from the lower control station (refer to Fig-
ure 8.11).
Operating Controls
Use the following procedure to operate the machine from
the lower controls.
1. Turn the battery disconnect switch on.
2. At the lower controls, pull the emergency stop switch
outward to the on position.
Emergency Stop Button
Control Selector Switch
Platform Raise/Lower Switch
Ground Strap
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