Pre-Operation Safety Inspection
10
S3219E/S3220E/S3226E/S4726E/S4732E – 1500842
Emergency Stop Button
The emergency stop (refer to Figure 3) is a two-position,
red push button on the front of the upper control panel.
Push the button inward to disconnect power from all
control circuits at the upper controls.
Twist the button to restore power.
Push the emergency stop button inward when the
upper controls are not in use to protect against unin-
tentional operation.
Note
The lower controls override the upper controls. If the up-
per control emergency stop is engaged the lower controls
can still be used to operate the aerial platform.
Drive/Lift Selector Switch
The drive/lift selector switch (refer to Figure 3) is used to
select either machine drive or lift functions. Both functions
can not be operated at the same time.
Place the drive/lift selector switch in the drive position
to drive the aerial platform using the joystick. The
platform will not raise or lower while driving.
Place the drive/lift selector switch in the lift position to
raise and lower the platform using the joystick.
Joystick
Use the joystick (refer to Figure 3) to operate the follow-
ing functions:
Aerial platform steering
Aerial platform drive and speed
Platform raise/lower and speed
Movement of the joystick in a given direction produces
a corresponding movement of the aerial platform. The
steering and drive functions may be operated separately
or simultaneously.
Interlock Switch
The joystick has an interlock switch in the handle (refer
to Figure 3).
Engage the interlock by grasping the joystick and
pulling the switch toward the handle.
Engage the interlock to activate the steering, drive,
or lift functions.
Steer Switch
The steer switch (refer to Figure 3) is a momentary con-
tact, rocker switch on top of the drive joystick. This switch
controls the two front wheels to steer the aerial platform.
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.
Note
The steering wheels are not self-centering. Set the steer-
ing wheels straight ahead after completing a turn.
Drive Range Switch
S3220E/S3226E/S4726E/S4732E
The drive range switch (refer to Figure 3) has two posi-
tions to select drive wheel operation:
High (Rabbit) – for normal driving conditions
Low (Turtle) – for driving on grades up to 25 percent
that require low speed and high torque operation,
Horn Button
The horn button (refer to Figure 3) is on the front of the
upper control panel.
Press the button to sound the horn.
Battery Condition Indicator
The battery condition indicator (refer to Figure 3) is lo-
cated on the top of the upper control panel. When the
light comes on, the lift function is cut out and drive speed
is reduced to slow.
Pre-Operation Safety Inspection
Note
Carefully read, understand and follow all safety rules,
operating instructions, labels and National Safety Instruc-
tions/Requirements. Perform the following steps each
day before use.
1. Open the trays and inspect for damage, fluid leaks
or missing parts.
2. Check the level of the hydraulic fluid with the platform
fully lowered. The fluid level must be between the full
and add marks. Add recommended hydraulic fluid if
necessary. See “Specifications” on pages 21-25.
3. Check that the fluid level in the batteries is correct.
See “Battery Maintenance” on page 18.
4. Verify that the batteries are charged.
5. Check that the AC extension cord has been discon-
nected from the outlet on the side of the chassis.
6. Check that all guardrails are in place and all fasteners
are properly tightened.
7. Inspect the machine thoroughly for cracked welds
and structural damage, loose or missing hardware,
hydraulic leaks, damaged control cable and loose
wire connections.