Snorkel SB66JRT-sn1000-10031 - Manual (Page 12)

Operation
10 SB66JRT
1. Pull the emergency stop button outward. Insert the
key in the control selector and turn the switch to the
lower control position.
2. Press the start button until the engine starts, then
release. The engine will not start if the control selec-
tor switch is left in the lower control position for 30
seconds or longer before starting the engine. The
control selector switch must be turned back to off
before the engine will start.
3. Let the engine warm to operating temperature.
4. Turn the boom speed knob to slow.
5. Hold the ground operation switch up while operating
the control toggle switches.
6. Hold the appropriate toggle switch in the desired
direction.
7. Release the function toggle switch to stop move-
ment.
8. Place the ground operation switch in the off position
when no functions are being operated.
Upper 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 machine functions
using the upper controls.
1. At the lower controls, pull the emergency stop button
outward. Insert the key in the control selector and turn
the switch to the upper control position.
2. Enter the platform and securely close the gate.
3. Attach the fall restraint lanyard to one of the anchor
points.
4. Pull the emergency stop outward.
5. Turn the anti-restart master switch to on and pause
a few seconds while the alarm sounds to alert others
that the machine is about to start. Turn the switch to
start, then release it to on. The engine will not start if
the switch is left in the on position for 30 seconds or
longer before turning it to start. The switch must be
turned back to off before the engine will start.
6. Let the engine warm to operating temperature.
Boom Operation
Use the following procedure to operate the turntable,
boom, or platform functions.
1. Turn the boom speed knob to slow.
2. Step down on the platform foot switch. This switch
must be held down to operate the upper controls.
3. Hold the appropriate control in the desired direction.
Always look in the direction of movement.
4. Gradually turn the boom speed knob to control
the boom extend, jib and platform rotate function
speed.
5. Releasing the control to its neutral position, or releas-
ing the foot switch will stop movement.
Driving and Steering
A
Danger
The aerial platform can tip over if it becomes unstable.
Death or serious injury will result from a tip-over ac-
cident. Do not drive an elevated aerial platform on
soft, uneven, or sloping surfaces. Do not drive the
machine on grades that exceed 25 percent.
For operation on grades up to 30 percent, it is recom-
mended that the main boom be near horizontal and the
jib on the aerial platform elevated just enough to provide
adequate ground clearance. A 30 percent grade is a 0.91
m (36 ″) vertical rise in 3.05 m (10″) horizontal length.
Avoid driving with the platform over the front (steer) end
of the chassis. In this position the machine is difficult to
control because:
drive and steer control movements and their result-
ing machine movements are reversed.
when driving fast, sudden turns or stops produce
more severe reactions to platform occupants.
more turning space is required to prevent the
platform from colliding with obstacles several feet
beyond the path of the t yres.
A
Warning
Death or serious injury can result from improperly
driving or steering the aerial platform. Read and un-
derstand the information in this manual and on the
placards and decals on the machine before operating
the aerial platform on the job.
The blue and yellow arrows on the chassis indicate the
direction the chassis will move when the drive or steer
control is moved toward the corresponding color.
When the machine is in the stowed position, with the
booms centered between the rear wheels, the direction
of drive and steer control movement corresponds with
the direction of chassis movement.
When the turntable is rotated from the stowed position,
with the booms to either side of or in front of the chassis,
the direction of control movement does not correspond
with the direction of chassis movement.
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