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SET-UP
OPERATOR MANUAL 600E2
4-4
PUBLISHED 04-26-2019 CONTROL # 113-09
Lifting Over the Front with a SFO
A single front outrigger (SFO) is required when loads are to
be lifted over the front of the vehicle. Before conducting any
boom operations, extend both outriggers until the chassis
weight is removed from the wheels. Level the crane side-to-
side using the level indicator located at either control station
as a reference. Then extend and lower the rear stabilizers to
level the crane front-to-back. Again refer to the level indicator
to insure that the crane is properly leveled. After the crane is
leveled side-to-side and front-to-back, extend the SFO until
firm contact is made with the ground. Always keep the load
as close to the ground as possible.
Check to ensure that the extension, if so equipped, is stowed
correctly on the first section boom.
Before Making the Lift
1.
Check all controls for proper operation by operating
each system through one complete cycle. This is
particularly important after the unit has been serviced or
repaired. If any abnormal operations are detected,
correct the condition before continuing.
2.
During all operations, the controls should be metered
when beginning or terminating a movement to prevent
sudden starting or stopping which imposes undue shock
loads on the equipment. This metering can be
performed by metering the control lever and the foot
throttle.
READING AND UNDERSTANDING THE
LOAD CHARTS
The structures and components of your unit are designed to
provide satisfactory service if the unit is not loaded in excess
of the maximum rated loads specified on the load chart.
Overloading can create serious potential safety hazards and
can also shorten the service life of your unit. It is important
that you know the weight and radius of any load that you are
attempting to handle. This should be done by use of a
dynamometer and tape measure or by contacting your
supervisor.
Overloading a crane can cause
many types of failure depending on
t h e c o n f i g u r a t i o n a n d w o r k i n g
p os i t io n o f t h e c r a n e, su c h a s
structural damage to almost any part
of the crane, hoist or cable failure
and tipping the unit over.
The load chart shows the maximum rated loads including
load (weight being lifted), load handling equipment such as
slings, buckets, and downhaul weight that can be handled by
the crane and the hoist. The weight of the load handling
equipment and boom attachments must be deducted from
the maximum load rating shown on the load chart to
determine the payload which can be lifted. Additional
reduction may be necessary to make allowance for such
factors as the effects of freely swinging loads, wind, ground
conditions, out-of-level conditions and operating speeds.
The ratings shown on the outrigger full span load chart are
maximum loads and are based on:
-
the structural integrity of the crane in shaded areas,
-
the stability of the crane in non shaded areas.
The stability or non shaded areas represent a stability tipping
factor of 85% (Note: For New York City approved units, the
stability or non shaded areas represent a stability tipping
factor of 75%) when:
DANGER
Do not operate outriggers unless they are visible to either
the operator or a designated signal person to avoid
crushing injury
360°
Block
+
Sling
+
Load
Total Rated
Load
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 ...
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