2-12
If there is a malfunction of the RCL or Anti-Two-Block system that causes loss of boom
movement and cannot be remedied by the procedures above, the override keyswitch under
the dashboard may be required to move the boom.
W A R N I N G
We recommend the CANCEL button and emergency override switch be used with
discretion. Improper or careless use of this switch can cause damage to the crane
and endanger people and property. The operator who uses these overrides in an
emergency should use good judgment.
There is a light on the dashboard to warn that one or more outriggers is not fully extended
when using the ON OUTRIGGERS setup on t he RCL. C heck the l ight daily when the
outriggers are down and there is no load on t he hook by raising and lowering each outrigger
about three inches. The light should come on when an outrigger is up.
CRANE CAPACITY
Before lifting loads, the operator must read the
Crane Capacity Chart
and adher e to the
load capacities and radii of handling given. The information provided on this chart is based
on stability, structural strength and hydraulic capacity.
To operate the crane safely, the operator must know the weight of the load and handling
devices and t he radius of the lifting operation. T he crane must not be loaded bey ond the
specifications of the capacity chart except for test purposes as pr ovided in ASME B30.5
Section 5-2.2. The person responsible for the lift must be sure that the load does not exceed
the crane ratings at any radius at which the load may be during the entire lifting operation.
The weights of the hooks, blocks, downhaul weights, slings, and other handling devices must
be added with the load.
The
Rated Capacity Limiter
on t he crane is int ended to assist the operator in est imating
loads and measuring load radii and to alert the operator to impending overload conditions.
The use of the Rated Capacity Limiter does not replace the requirements of the preceding
paragraph. Ver ified weights and m easured radii must take precedence over the Rated
Capacity Limiter readings. Please read the RCL Operation Manual.
The Rated Capacity Limiter displays a load, load r adius and boom angle that are obtained
from electronic calculations using readings from pressure, length and angle sensors. These
readings cannot be exact and should be treated as est imates. I n general, the smaller the
load and the higher the boom angle, the larger the percent of error.
Be aware that the electronic and mechanical components cannot be 100% fail-safe. Do not
consider the system as a substitute for good judgment, training, experience or accepted safe
operating practices. The operator is solely responsible for operation of the crane. Setting the
Rated Capacity Limiter for the configuration of the crane is necessary before starting a lift. If
incorrectly set, the system will not alert the operator to an impending overload, possibly
resulting in the loss of life or destruction of property.
If the Rated Capacity Limiter is inoperative or malfunctioning, repair or recalibration of the unit
must be done as soon as reasonably possible. The person responsible for lifts must establish
procedures for determining load w eights and r adii and conduct the lifts according to the
second paragraph above.
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