Snorkel A38E-sn004509+ - Manual (Page 25)

Chapter 7 – Controls
A38E – 8210052 21
The following controls are located on the upper control
panel:
Emergency stop button
Joystick
Steer switch
Drive/steer select
Riser select
Main boom select
Tip boom select
Turntable rotation select
Platform level select
Horn button
Platform rotator
Emergency Stop Button
The emergency stop (refer to Figure 7.4) is a two-position
red push button.
Push the emergency stop button inward to disconnect
power to the upper controls.
Twist the emergency stop button clockwise to restore
power.
Push the emergency stop button inward when the
upper controls are not in use to protect against unin-
tentional operation.
Both the lower and upper control emergency stop buttons
must be on to operate the machine.
Joystick
The joystick (refer to Figure 7.4) is used to either drive
the aerial platform or to operate the boom and turntable
after selecting the appropriate function.
Press the drive/steer button to use the joystick to drive
the aerial platform.
Press the boom or turntable buttons to use the joystick
to operate those functions.
Movement of the joystick in a given direction produces a
corresponding movement of the aerial platform as indi-
cated on the upper control placard. The steering and drive
functions may be operated separately or simultaneously.
Steer Switch
The steer switch (refer to Figure 7.4) is a momentary
contact, rocker switch on top of the drive joystick. This
switch controls the two front wheels to steer the aerial
platform. The
To steer to the right, engage the interlock switch on
the joystick and hold down the right side of the steer
switch.
To steer to the left, engage the interlock switch on
the joystick and hold down the left side of the steer
switch.
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Note
The steering wheels are not self-centering. Set the steer-
ing wheels straight ahead after completing a turn.
Drive/Steer Button
The drive/steer button (refer to Figure 7.4) is used with
the joystick to drive and steer the aerial platform.
To drive forward press the drive/steer button and
then push the joystick forward, the direction of the
red arrow.
To drive in reverse press the platform raise/lower but-
ton and then pull the joystick backward, the direction
of the yellow arrow.
Note
The platform will not raise or lower while driving.
Riser Button
The riser button (refer to Figure 7.4) is used with the
joystick to raise and lower the riser boom.
To raise the riser boom, press the riser button and
then push the joystick forward, the direction of the
red arrow.
To lower the riser boom, press the riser button and
then pull the joystick backward, the direction of the
yellow arrow.
Main Boom Button
The main boom button (refer to Figure 7.4) is used with
the joystick to raise and lower the main boom.
To raise the main boom, press the main boom button
and then push the joystick forward, the direction of
the red arrow.
To lower the main boom, press the main boom button
and then pull the joystick backward, the direction of
the yellow arrow.
Tip Boom Button
The tip boom button (refer to Figure 7.4) is used with the
joystick to extend and retract the tip boom.
To extend the tip boom, press the tip boom button
and then push the joystick forward, the direction of
the red arrow.
To retract the tip boom, press the tip boom button
and then pull the joystick backward, the direction of
the yellow arrow.
Turntable Rotation Button
The turntable rotation button (refer to Figure 7.4) is used
with the joystick to rotate the turntable.
To rotate the turntable clockwise press the turntable
rotation button and then push the joystick forward, the
direction of the red arrow.
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