Manitowoc National Crane NBT40-1 Series User Manual

National Crane 3-29-2018 Control # 610-00 4-21
NBT40-1 SERIES OPERATOR MANUAL OPERATING CONTROLS - CRANE
4
a. Make crane as stable as possible, including, boom
angle, superstructure orientation, jib angle, etc. In
high winds, boom and jibs should be lowered or
secured.
b. Engage swing brake and/or swing lock pin.
6. Apply parking brake.
7. Put all operating controls in neutral position.
8. Position Crane Function switch to OFF.
9. Shut down engine following proper procedures specified
in this manual and applicable engine manual.
10. Remove keys.
11. Disconnect batteries, if crane will be inactive for over 24
hours.
12. Close and lock all windows, covers, and doors.
Unattended Equipment
Configuration in which the crane should be left while
unattended shall be determined by a qualified, designated
individual familiar with job site, configuration, conditions, and
limitations.
Before Performing the Lift
• Set outriggers as described in (Setting the Outriggers,
page 4-17) section in this manual.
• Prior to any fully retracted outrigger (0% extended)
operation, extend jack cylinders with outriggers fully
retracted and level crane. Engage swing brake and raise
boom out of boom rest until minimum boom angle for
indicated boom length with no load is exceeded. DO
NOT release swing brake with boom below minimum
indicated boom angle.
• Program the RCL as specified in RCL Operator Manual
which is located in crane cab.
• Check all controls for proper operation. If any abnormal
operations are detected, the condition must be corrected
before continuing.
• Check the work area for electric power lines.
LOAD CHART
Load chart is stored in a pocket in crane’s operator control
station. Load chart contains lifting capacities of crane in all
allowable lifting configurations.
Crane is designed to provide satisfactory service if it is not
loaded in excess of maximum rated loads specified in load
chart. Overloading can create safety hazards, cause
structural damage, and shorten service life of crane.
You must understand how to use load charts located in cab.
Make sure load, working area, and crane configuration are
within load limit specified in load chart.
NOTE: Weight of load handling devices (hook blocks and
slings) are considered part of load.
Using the Load Chart
NOTE: One of the most important tools of every crane is
the load chart found in crane operator’s station.
NOTE: Refer to Figure 4-18 for terms to know in
determining lifting capacities.
Load charts contains a large amount of information, which
must be thoroughly understood by operator.
Load charts contains outrigger capacity charts for fully
extended, mid extended, outriggers for the main boom and
CAUTION
To avoid possible engine fault codes and undesirable
operation, ensure keyswitch has been off 2 minutes
before disconnecting batteries.
DANGER
Tipping Hazard!
Changing weather conditions including but not limited to:
wind, ice accumulation, precipitation, flooding, lightning,
etc. should be considered when determining the location
and configuration of crane when it is to be left unattended.
Failure to comply with these instructions may cause death
or serious injury.
DANGER
Tipping Hazard!
Serious injury or death could result from improper crane
on fully retracted outriggers.
In fully retracted outrigger configuration, before slewing:
Ensure outriggers are properly set and crane is level per
operator manual.
Set swing brake to locked position.
Raise boom to exceed minimum boom angle for given
boom length at no load as indicated on Load Chart/Reach
Diagram
DO NOT release swing brake with boom below minimum
indicated boom angle
.
!

Manitowoc National Crane NBT40-1 Series Specifications

General

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