NBT50 OPERATOR MANUAL INTRODUCTION
National Crane Published 03-23-2018 Control # 243-14 1-1
SECTION 1
INTRODUCTION
SECTION CONTENTS
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Supplemental Information . . . . . . . . . . . . . . . . . . . 1-1
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Basic Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . 1-1
New Owner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
GENERAL
This manual has been compiled to assist you in properly
operating and maintaining your Model NBT50 Series
National Crane (Figure 1-1).
Before placing the crane in service, all operators and
persons working around the crane must thoroughly read and
understand the contents of this manual pertaining to Safety,
Operation and Maintenance. Before moving a vehicle
equipped with the crane, information relating to transporting
the vehicle must be read and observed.
This manual must be retained with the machine for use by
subsequent operating personnel.
For detailed information concerning the operation and
maintenance of the RCL system installed on the crane, see
Section 7- Rated Capacity Limiter in this manual.
Manufacturers of rated capacity limiters may refer to them in
their manuals as a load moment indicator (LMI), a hydraulic
capacity alert system (HCAS), a safe load indicator (SLI), or
an ECS5; Manitowoc refers to these systems as a rated
capacity limiter (RCL) throughout its Operator and Service
Manuals.)
Information in this manual does not replace federal, state or
local regulations, safety codes or insurance requirements.
The NBT50 has been designed for maximum performance
with minimum maintenance. With proper care, years of
trouble-free service can be expected.
Constant improvement and engineering progress makes it
necessary that we reserve the right to make specification
and equipment changes without notice.
National Crane and our Distributor Network want to ensure
your satisfaction with our products and customer support.
Your local distributor is the best equipped and most
knowledgeable to assist you for parts, service, and warranty
issues. They have the facilities, parts, factory trained
personnel, and the information to assist you in a timely
manner. We request that you first contact them for
assistance. If you feel you need factory assistance, please
ask the distributor’s service management to coordinate the
contact on your behalf.
Supplemental Information
Supplemental Information regarding Safety & Operation,
Specifications, Service & Maintenance, Installation, and
parts for options such as remote controls, augers, varying
control configurations, baskets, grapples, etc. are included in
separate manuals.
Whenever a question arises regarding your National product
or this publication, please consult your National Distributor
for the latest information. Your National Distributor is
equipped with the proper tools, necessary parts, and trained
personnel to properly maintain and service your crane.
Safety Information
A Safety Compact Disc (CD)/USB Flashdrive which includes
sections on Operation, Safety and Maintenance for National
Crane operators and owners is supplied when the crane is
purchased new. Additional copies are available from your
local distributor.
Basic Nomenclature
The nomenclature used to describe parts of a National Crane
are described in Figure 1-2. This nomenclature is used
throughout this manual.
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