Snorkel AB60J CE - Manual (Page 25)

Chapter 6 – Controls
AB60J – 0182099EE 21
Engine/Emergency Power Switch
The engine/emergency power switch is spring returned
to the engine position for aerial platform engine opera-
tion.
Place the switch in the emergency power position and
hold to operate aerial platform functions using the emer-
gency power system. Release the switch to disengage
the emergency power system.
Note
The emergency power system is for lowering the plat-
form during an emergency and is not intended for nor-
mal machine operation.
If the engine is running, it will stop when the switch is
placed in the emergency power position.
Throttle Switch
The throttle switch is used to set the engine throttle speed
to either low or high idle.
Place the switch in the low position for normal machine
operation and in high to drive at maximum speed.
The engine has a three speed throttle operation from
the upper controls. Independent of the throttle switch,
the platform foot switch, when depressed, increases the
engine speed from low to mid-range.
High engine speed is obtained when the main boom is
horizontal, the foot switch is depressed, the throttle
switch is in the high position, and the drive joystick is
moved out of neutral into the forward or reverse posi-
tion.
The machine can be driven in mid-range engine speed
with the throttle switch place in the low position.
Horn Button
The horn button is on the right side of the upper control
panel. Press the button to sound the horn.
Platform Foot Switch
The upper controls are interlocked through the platform
foot switch (refer to Figure 6.7). Step down on and hold
the platform foot switch to activate the drive and boom
functions from the upper controls.
Figure 6.7 – Platform
Boom Speed Knob
Use the boom speed control knob to control the speed
of the following boom functions.
• Riser boom raise/lower
• Jib boom raise/lower
• Boom extend/retract
• Platform level up/down
Set the knob to slow when beginning a movement. The
speed may be increased by slowly rotating the knob to-
ward fast. For smooth operation, rotate the knob to slow
when ending movement.
Drive Joystick
The drive joystick is used to control forward and reverse
motion of the aerial platform. It is also used to steer the
machine. The steering and drive functions may be op-
erated simultaneously.
Note
The distance the joystick is moved is proportional to the
speed of the function.
Hold the joystick forward to move the aerial platform
forward and backward to move in reverse as indicated
by the directional arrows on the chassis.
Hold the joystick to the right to steer the aerial platform
to the right and to the left to steer to the left as indicated
by the directional arrows on the chassis.
Note
The steering wheels are not self-centering. Set the steer-
ing wheels straight ahead after completing a turn.
Drive Range Switch
The drive range switch has two positions to select drive
wheel operation:
• HI – high speed and low torque operation.
• MID – high speed and high torque operation.
• LO – low speed and high torque operation.
Platform Level Switch
The platform level switch is used to level the platform
floor with respect to the ground. The switch is spring
returned to the center off position.
Hold the switch up to tilt the platform floor upward or
away from the ground. Hold the switch down to tilt the
platform floor downward or toward the ground.
Platform Rotate Switch
The platform rotate switch is used to rotate the platform
relative to the end of the tip boom. The switch is spring
returned to the center off position.
Hold the switch to the left to rotate the platform clock-
wise. Hold the switch to the right to rotate the platform
counterclockwise.
Platform Foot
Switch