55M4300CCE00 Rev A
Where
Load:
represents the suspended load reading and
1.00
represents the
adjustment factor (a value of 1.00 signifies that there is no applied adjustment). The
main boom must be completely retracted for the mode selected and with an angle of
approximately 60°. When positioning the machine remember to make the last derrick
motion boom up. Carefully lift the test load until it is just clear of the ground.
2)
Use
“
”
or
“
”
to modify the load adjustment factor until the
displayed load is equal to the test load. Press
“
”
to accept the change, the
system will confirm the calibration is saved.
3)
Press
“
”
to return to the main calibration menu.
Carefully set the test load on the ground.
To clear the effect of load adjustment, enter the screen above and adjust the factor to
read 1.00 then accept the change as before. This should always be done before
commencing a no load calibration, see section 3.5.
Step #17: Main boom “Load offset”
This feature is optional and can be omitted if the displayed load is judged acceptable, it
is normally used in tandem with section 3.7 ‘load adjust’. A separate calibration is
available for each crane configuration that also has an individual no load calibration, but
is not used for configurations with boom attachments (refer to Section 3.11).
It is used to increase the accuracy of the load on hook indication. This will compensate
for minor geometric errors that may come from crane manufacturing tolerances or from
the method used to take the dimensions, weights and centre of gravity locations of
attachments.
Use the load checks performed in section 3.7 to establish if a “load offset” is required.
“Load offset” should only be used if the load reading indicates a constant fixed load
error for the complete operating range, it allows for a positive or negative fixed value
offset to be applied to the displayed load. If the error is variable then verify all data
entries required in the dimension and calibration data section.
It is recommended that this procedure is done with the machine on outriggers or
crawlers.
Summary of Contents for i4300
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