Snorkel SP22 - Manual (Page 48)

■ Platform Controls
The upper controls may be used for driving the
aerial platform and positioning the booms and
platform while on the job.
Use the following procedure to operate boom or
platform functions using the upper controls.
1. At the lower controls, insert the key into the
master switch€ (refer to Figure 7.1) and turn
the switch on.
2. Switch to platform operation (refer to
Figure 7.1).
3. Enter the platform and securely close the
gate (refer to Figure 7.2).
4. Attach the fall restraint lanyard to one of the
anchor points‚ (refer to Figure 7.2).
Figure 7.2—Platform
5. Pull the emergency stop buttonƒ out (refer
to Figure 7.3).
Figure 7.3—Platform Controls
6. Activate the start switch until the engine
starts, then release it.
7. Step down on the platform foot switch„
(refer to Figure 7.2).
❑ Boom Operation
Use the following procedure to operate the
turntable, boom, or platform functions.
1. Always look in the direction of movement.
Move the boom joystick in the desired
direction. The blue and yellow arrows by the
boom joystick correspond with the direction
of movement of the component selected.
2a For example, the yellow arrow by the main
boom points downward. To move the main
boom down, move the joystick toward the
corresponding yellow arrow. The rate of
movement is proportional to the joystick
position for turntable and boom functions.
2. Return the joystick to neutral to stop
movement.
❑ 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 25 percent.
A fully stowed machine may be operated on grades
up to 40 percent. A grade of 40 percent is equal to
an angle of 22 degrees.
Use the following procedure to operate the drive
functions.
1. Determine the desired drive range for the
specific driving conditions. The system
default is to the low range.
● Use low range for driving on loading ramps
or other steep grades and when safety
considerations demand slow deliberate
machine movement.
● Use high range when traveling across firm,
flat, level surfaces. High speed can only be
activated when the booms are stowed.
2. Press the range button to change the drive
system from low speed, high torque
operation to high speed, low torque
operation.
page 8 - 2 SP20/SP22 – 11890A
Chapter 8. Operation
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