Manitowoc National Crane NBT40-1 Series User Manual

4-18 3-29-2018 Control # 610-00
OPERATING CONTROLS - CRANE NBT40-1 SERIES OPERATOR MANUAL
indicator is out of adjustment, verify and adjust bubble
level using procedures under Equipment Level
Indicators Adjustment, page 4-17.
6. Lower the center front stabilizer (optional) only after all
other outriggers are set. Press the front stabilizer switch
to activate and the extend/retract switch to extend. Hold
the extend/retract switch for two seconds after the
stabilizer contacts the ground. The front stabilizer is
automatically set at the correct ground pressure.
Outrigger Monitoring System (OMS)
Outrigger Monitoring System (OMS) aids operator in
accurately programming Rated Capacity Limiter (RCL) by
automatically identifying position of each outrigger beam.
OMS uses four sensors, one per outrigger beam, and an
inclinometer located in aerial lift superstructure to identify
when an outrigger beam is fully extended or an outrigger jack
is extended. This system is standard equipment on all aerial
lifts. Status will display on RCL screen in ground control cab
(Figure 4-3) when an outrigger beam is positioned to one of
pre-defined locations, including fully retracted, mid-extend,
and fully extended.
Set up of outriggers is same for cranes equipped with OMS,
(See “Setting the Outriggers” on page 4-17.)
If crane setup “On Outriggers” is chosen when programming
the RCL, then OMS indicates to RCL the horizontal position
of each of the four outrigger beams. Based on this
information, RCL will default to most conservative outrigger
beam configuration (i.e. If three outriggers are fully extended
and one is retracted, RCL will select retracted as outrigger
configuration). A confirmation of this configuration is all that
is needed (see Figure 4-14). Refer to Rated Capacity Limiter
Operator’s Manual for detailed instructions.
Outrigger Jack Monitoring
The following are also for use on cranes if Dual Rated as an
aerial lift. The outrigger jack monitoring system works in
conjunction with the standard outrigger monitoring systems
(OMS) and senses the location of each outrigger beam, the
position of each vertical jack, that the boom is stowed in the
boom rest, the truck chassis park brake is set, and the
levelness of the outriggers to permit operation within the
allowable level specification.
DANGER
After the center front stabilizer is set, it automatically
retracts if any other jack is adjusted. Reset the center front
stabilizer if this occurs.
DANGER
Tipping Hazard!
Mid-extend outrigger beam lock pin must be engaged
before operating on any beam from mid-extend position.
Proper Load Chart/Reach Diagram and RCL program
must be selected for current outrigger configuration.
Not Level
FIGURE 4-13
!
Startup Graphic
Operational Graphic
FIGURE 4-14
8131-1
8131-2

Manitowoc National Crane NBT40-1 Series Specifications

General

Brand	Manitowoc
Model	National Crane NBT40-1 Series
Category	Construction Equipment
Language	English