Snorkel S2033 - Manual (Page 37)

Figure 9.2—Upper Controls
Before operating from the upper controls,
properly set up the aerial platform as described
under Preparing for Operation. Use the following
procedure to operate the aerial platform from the
upper controls.
1. From the lower controls, place the control
selector switch in the upper position. The
upper controls will not operate while the
control selector is in the lower position.
2. Enter the platform. The top rail at the platform
entrance may be swung upward to load the
platform if necessary. Secure the chain, or
optional swinging gate, and the top rail.
3. Pull the emergency stop button outward.
4. The aerial platform may be positioned and
the platform may be raised and lowered from
the upper controls.
❑ Driving
The aerial platform can tip over if it becomes
unstable. Death or serious injury can result
from a tip-over accident. Do not drive an
elevated aerial platform on soft, uneven, or
sloping surfaces. Do not drive a fully stowed
machine on grades that exceed 20 percent.
A fully stowed machine may be operated on
grades up to 20 percent. A grade of 20 percent is
a 24
″
(61 cm) vertical rise in 10
′
(3.05 m)
horizontal length. Use the following procedure to
drive the aerial platform using the upper controls.
1. Place the drive/lift selector switch (refer to
Figure 9.2) in the drive position.
2. Squeeze and hold the interlock switch
against the joystick.
● To move forward, slowly push the joystick
forward until the desired speed is reached.
The aerial platform may travel at three
different speeds depending on how far
forward the joystick is moved. The three
speed ranges are separated by detents
that can be felt as the joystick is moved
from neutral.
● To move backward, slowly pull the joystick
backward. There is only one reverse
speed.
◆ Drive Speeds
The aerial platform can travel at three different
drive speeds. Drive speed ranges are interlocked
through a limit switch that senses scissors arm
position. When the platform is elevated below
approximately six feet, the aerial platform may be
driven forward or backward at three different
speeds. Above six feet of elevation, the two
fastest speeds are locked out and only the
slowest drive speed will work.
The potential for an accident increases when
safety devices do not function properly. Death
or serious injury can result from such
accidents. Do not alter, disable, or override
any safety device.
Do not use the aerial platform if it drives faster
than ½ mile per hour (25
′
in 30 seconds) when
elevated above 6
′
even if the joystick is in the mid
or high speed position.
◆ Drive/Lift Level Sensor Interlock
When the platform is elevated above
approximately six feet, lift and drive functions are
interlocked through a level sensor system. If the
chassis is tilted more than two degrees
side-to-side, or four degrees front-to-rear, platform
raise and drive functions are disabled and an
alarm sounds when those controls are activated.
If the drive/lift level sensor interlock shuts off the
platform raise and drive functions, lower the
platform and drive to a level surface.
Platform raise and drive functions may also be
disabled by the pothole protection interlock.
❑ Steering
The steer control switch is located on the joystick
(refer to Figure 9.2). Use the following procedure to
steer the aerial platform using the upper controls.
1. Squeeze and hold the interlock switch
against the joystick.
page 9 - 2 S2033 – 0390076
Chapter 9. Operation
DANGER
DANGER
Horn
Button
Steer
Switch
Interlock
Switch
Drive/Lift
Selector
Switch
Joystick
Emergency Stop Button
Battery
Condition
Indicator
Low Voltage
Warning Light