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NBT60XL OPERATOR MANUAL
CONTROLS AND OPERATING PROCEDURES
3
NATIONAL CRANE
Published 11-01-2020 Control # 710-00
3-13
Boom Telescope Pedal (Standard with Aux
Hoist)
The crane is equipped with the boom telescope pedal only
when the auxiliary hoist option is included. The telescope
foot pedal (3, Figure 3-4) is located on the crane cab floor
and is used to extend and retract the boom. Pushing down at
the top of the pedal extends the boom out; pushing down at
the bottom of the pedal telescopes the boom in.
Foot Throttle Pedal
The foot throttle (4, Figure 3-4) is located on the crane cab
floor and is used to control the engine speed. Depress the
foot throttle to accelerate the engine speed and release to
return to idle.
RCL Display Panel
The display panel (5, Figure 3-4) is for the Rated Capacity
Limiter (RCL). For more information, see “Rated Capacity
Limiter” on page 7-1.
The RCL assists the crane operator with the information for
the crane to perform safely within its design parameters. The
RCL displays information on length and angle of boom,
working radius, rated load, total weight being lifted, and
outrigger position.
The RCL continuously monitors these parameters and
provides the operator with an updated readout of the crane
status. If a rated capacity condition is approached, the RCL
warns the operator with an alarm and locks out the crane
functions.
RCL Override Switches
There are two RCL Override Switches located in the crane
cab.
The switch located on the front control panel is a momentary
type switch (6, Figure 3-4). Turn the key to the On position
(right) to disengage the RCL controls. Releasing the key
allows the RCL controls to re-engage.
The RCL bypass switch (1, Figure 3-7) located behind the
cab seat, below the fuse relay panel (2), is an off/on switch
and overrides the overloaded controls until the switch is
turned to the OFF position.
1
FIGURE 3-6
1
2
3
10258
9601
DANGER
T h e R C L o n l y a i d s t h e o p er a to r w h e n p r o p e r l y
programmed with the proper load chart and crane
configuration. To prevent injury or death to personnel, be
sure the RCL is programmed before crane operation.
DANGER
Use extreme caution when operating the crane with the
RCL system overridden. Use of the RCL system override
to operate the crane in a non-permissible range can result
in death or injury to personnel and/or damage to
equipment and property.
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Fo
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Reference
Only