Snorkel AB46JRT - Manual (Page 47)

Chapter 8 – Operation
AB46JRT – 0260071 43
Figure 8.2 – Upper Controls
5. Turn the start switch to the on position and pause a
few seconds while the alarm sounds to alert others
that the machine is about to start. Operate the preheat
switch if required.
• When the engine is warmed up or the ambient
temperature is above 50°F (10°C), it is not neces-
sary to operate the glow plugs before starting the
engine.
• When the ambient temperature range is 50°F
(10°C) to 23°F (-5°C), press and hold the preheat
button for five seconds before starting the engine.
• When the ambient temperature is below 23°F
(-5°C), press and hold the preheat button for ten
seconds before starting the engine.
6. Turn the switch to start, then release it to on. The en-
gine 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.
7. Let the engine warm to operating temperature.
Boom Operation
Use the following procedure to operate the turntable,
boom, or platform functions.
1. Step down on the platform foot switch (refer to Figure
8.3). This switch must be held down to operate the
upper controls.
Figure 8.3 – Platform
2. Hold the appropriate control in the desired direction.
Always look in the direction of movement.
3. To stop movement release the control to its neutral
position or release the foot switch.
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 40 percent.
For operation on grades up to 40 percent, it is recom-
mended that the main boom be near horizontal and the
jib be elevated just enough to provide adequate ground
clearance.
A 40 percent grade is a 48
″ (1.2 m) vertical rise in 10′
(3.05 m) horizontal length.
Avoid driving with the platform over the front end of the
chassis. In this position the machine is difficult to control
because:
• Drive and steer control movements and their resulting
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 tires.
Platform Foot
Switch
Lanyard Anchors
Top
Front
Emergency
Stop Button
Preheat Switch
Start Switch