Snorkel TB66J - Manual (Page 31)

Chapter 6 – Controls
TB66J – 0083740 27
quieter and the engine will consume less fuel than
at high throttle operation.
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
position.
On machines with three speed throttle:
Press down on the platform foot switch to increase
the engine speed from low to mid-range, indepen-
dent of the throttle switch.
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
position.
Place the throttle switch place in the low position to
drive the machine in mid-range engine speed.
Engine/Emergency Power Switch
The engine/emergency power switch (refer to Figure 6.6)
is used to operate turntable, boom, and platform func-
tions using the emergency power system. The switch is
spring returned to the engine position for aerial platform
engine operation.
Caution
The emergency power system is for emergency
lowering and stowing only. The length of time the
pump can be operated depends on the capacity
of the battery. Do not use this system for normal
operation.
Hold the engine/emergency power switch backward
to activate the emergency 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 normal
machine operation.
If the engine is running, it will stop when the switch is
placed in the emergency power position.
Platform Foot Switch
The upper controls are interlocked through the platform
foot switch (refer to Figure 6.7).
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Figure 6.7 – Platform
Step down on and hold the platform foot switch to
activate the drive and boom functions from the upper
controls.
Machine/Generator Switch
The switch for the optional AC generator is located on the
front of the upper control panel (refer to Figure 6.8).
Figure 6.8 – Upper Control Front
With the engine running, place the switch in the
generator position to provide electrical power to the
electrical outlet at the platform.
Place the switch in the machine position to turn off
the generator and resume machine operation.
Machine functions will not operate while the switch is in
the generator position.
Hydraulic System Warm-up Switch
The optional hydraulic fluid warm-up switch is used to
warm the hydraulic fluid when the ambient temperature
is below 32°F (0°C) and boom movement is sluggish
because of cold fluid.
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Platform Foot
Switch
Machine/Generator
Switch