55M4300CCE00 Rev A
A known test load is needed to perform this calibration and should be between 50% and
90% of SWL for the configuration to be calibrated. These SWL’s should be based on the
capacity with a boom angle of approximately 60° and with the boom fully retracted for
the boom mode selected.
The calculated test loads should normally include the weight of the hook block and any
slings, shackles etc. that are used.
Ensure the current duty selection matches the actual crane configuration being used for
the calibration.
1)
Use
“
”
or
“
”
to highlight “load offset” and press
“
”
to enter.
Where
Load:
represents the suspended load reading and
0.00
represents the offset
factor (a value of 0.00 signifies that there is no applied offset). 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 offset factor until the
displayed load is equal to the test load and 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.
In some rare instances where the above adjustments do not provide acceptable results
it may be necessary to use a more sophisticated method of load corrections. See
section 6 for details but be sure to take notice of the warnings before proceeding.
