CONTROLS AND OPERATING PROCEDURES OPERATOR MANUAL NBT60L
3-18 Published 09-06-2019 Control # 691-01
Main Hoist Speed
The main hoist speed selector switch (30, Figure 3-5) is
located on the right seat armrest. It is a three position switch
(HI-OFF-LOW), placarded as rabbit (fast) hoist motor speed
and turtle (slow) hoist motor speed. The center switch
position turns off the hoist controller.The main hoist speed
appears on the RCL display. For more information about the
HRI icons visible on the RCL display screen, see Table 7-3
on page 7-4.
Auxiliary Hoist Speed
If equipped, the auxiliary hoist speed selector switch (31,
Figure 3-5) is located on the left seat armrest. It is a three
position switch (HI-OFF-LOW), placarded as rabbit (fast)
hoist motor speed and turtle (slow) hoist motor speed. The
center switch position turns off the hoist controller. The
auxiliary hoist speed appears on the RCL display. For more
information, see Table 7-3 on page 7-4.
Hoist Rotation Indicator (HRI) System
The following sections describe the HRI system. For
information about the HRI icons visible on the RCL display
screen, see Table 7-3 on page 7-4.
Hoist Rotation Indicator (HRI) Display
The HRI information appears on the operating screen of the
RCL display. The icon indicates the current hoist in operation
and which direction the hoist is rotating. For information
about the HRI icons visible on the RCL display screen, see
Table 7-3 on page 7-4.
Hoist Rotation Indicators (HRI)
The Hoist Rotation Indicators for the auxiliary and main hoist
are located on top of each hoist control lever. Each indicator
is electronically driven by an input signal from a sensor
attached to its related hoist and an output signal from a
control module. Each hoist control lever pulses when its hoist
is running so the operator’s thumb can sense it.
3rd Wrap Indicator
The 3rd wrap indicator (sometimes called the minimum wrap
indicator) notifies the operator when three wraps of wire or
synthetic hoist rope remain on the hoist drum. The 3rd wrap
indicator sensor is located on the left side of the main and
auxiliary hoists. Each hoist is equipped with a tapered roller.
When the 3rd wrap is reached, the 3rd wrap indicator sensor
is activated and an icon on the RCL is displayed. This feature
does not lock out the hoist down function.
The 3rd wrap indicator icon appears on the RCL display. For
more information about the icon, see Table 7-3 on page 7-4.
Cab Tilt Switch
The cab tilt switch button (41, Figure 3-5) is located on the
right seat armrest. It is a three position, momentary spring
centered to off rocker switch. It has two positions, Up and
Down, allowing the cab to be tilted either up or down.
NOTE: The cab tilt feature and the cab must be completely
down before travel.
Adjustable Swing Speed Valve
The crane is equipped with an adjustable swing speed valve
(1, Figure 3-9) that sets the maximum swing speed of the
machine. Turn the valve knob clockwise to increase and
counterclockwise to decrease speed.
HEATER
The diesel powered supplemental heater (1, Figure 3-10) is
located under the cab support frame and supplies heat to the
crane cab. The heater controls the temperature of the crane
cab by cycling coolant between the heater and the climate
control unit located under the cab seat. Controls (25, 26, 27,
Figure 3-4) for the heater are located on the overhead
control panel in the crane cab.
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