SET-UP
OPERATOR MANUAL 600E2
4-6
PUBLISHED 04-26-2019 CONTROL # 113-09
6.
Rated loads are based on
freely suspended loads.
Always position the boom
tip directly over the load
before lifting. No attempt
shall be made to push
down with the boom or
move the load sideways in
any direction by pulling or
dragging the load.
7.
The user shall operate at reduced ratings to allow for
adverse job conditions such as soft or uneven ground,
high winds or erratic operation which produce swinging
(side) loads, experience of personnel, two machine lifts,
or other hazardous conditions for safe operation.
8.
When boom length or radius or both are between points
listed on load chart, the smallest load shown at either the
next larger radius or boom length shall be used.
9.
Do not exceed extension capacities at any reduced
boom length. If extension is between angle ratings on
load chart, the smallest load shall be used.
10.
Its safe to attempt to telescope or retract any load listed
if rating is not exceeded. Capacities at retracted boom
length cannot be telescoped without exceeding ratings.
11.
Always pay out loadline before extending boom to avoid
damaging loadline or crane structure.
12.
Loads lifted must be within safe hoist capacity as well as
safe crane capacity. Multiple part rope reeving must be
used on loads exceeding hoist single part rated pull.
extensions are rated for single part use only.
13.
Do not operate the boom over personnel or allow them
to walk or stand beneath the boom or load.
14.
Do not allow personnel on truck bed or crane frame area
when operating crane.
15.
Do not allow personnel to ride on hook, hook block, load
or any device attached to the loadline. Use only National
Crane approved baskets.
16.
Operate controls slowly and smoothly to avoid damage
to crane or personnel.
17.
Boom must be in carrying rack and outriggers fully
retracted for travel.
18.
Do not operate crane within 10 feet (3.05m) of live power
lines.
Definitions
Load Radius
Horizontal distance from the centerline of rotation before
loading to the center of the vertical load line or block with
load applied.
Loaded Boom Angle
Loaded boom angle is the angle between the first section
boom and the horizontal, after lifting the rated load at the
rated radius. The boom angle before loading should be
greater to account for deflections. The loaded boom angle
combined with the boom length give only an approximation
of the operating radius.
Working Area
Area measured in a circular arc above the center line of
rotation as shown on the Working Area diagram. If no decal
is present the work areas 360°.
Freely Suspended Load
Load hanging free with no direct external force applied
except by the loadline.
Side Load
Horizontal side force applied to the lifted load either on the
ground or in the air.
Boom Length
Length of the boom, from boom pivot pin to wire rope on last
main boom section. A decal on either side of the boom
shows when certain boom lengths are reached. The letters
on the intermediate boom lengths correspond to the letters
on the load chart.
Range Diagram
Corresponds to the pictorial in the load chart. The chart
shows the operating radius and height of the unloaded boom
tip at all boom lengths and angles. The chart should be used
as a guide to position unloaded loadline and to determine
approximate height to which the load can be lifted.
DETERMINING LOAD CAPABILITY
The following procedure is a typical method which must be
used to determine the crane’s ability to handle a load. The
crane is equipped with a standard hoist:
Block
+
Sling
+
Load
Total Rated
Load
Full Capacity
Work Area
180°
Fo
r
Reference
Only
Summary of Contents for National Crane 600E-2
Page 1: ...Operator Manual National Crane 600E 2 F o r R e f e r e n c e O n l y ...
Page 2: ...F o r R e f e r e n c e O n l y ...
Page 10: ...TOC 6 TABLE OF CONTENTS OPERATOR MANUAL 600E2 THIS PAGE BLANK F o r R e f e r e n c e O n l y ...
Page 121: ...F o r R e f e r e n c e O n l y ...
Page 122: ...F o r R e f e r e n c e O n l y ...