9. Once satisfied, select the next duty and repeat steps 2 – 7.
10. Once all duties are calibrated the crane is ready for commissioning.
5.6.2. Calibrating a Boom Section
1. Extend the boom to the desired length for calibrating.
2. Lift the desired test weight to calibrate – it is possible to calibrate with only
the fall or hook block or indeed with no attachments on the boom at all.
When fall blocks, slings etc. are present, accurately estimate the total
weight of all attachments including any desired test weight suspended.
3. Choose a low and a high angle you wish to use as calibration points. These
two angles should be as far apart as possible while still ensuring positioning
is at legal operating positions in the cranes working range. Also, ensure that
the telescopic cylinders are not full compressed or extended, as this will
cause unrealistic pressure readings. If your crane has any boom backstop
arrangement, ensure the backstops are not engaged at your high angle
selection. Angles of 30
and 50
would suffice, a greater spread would
however be advantageous. Luff the boom to the first of these angles. It does
not matter whether you start at a low or high angle first, however, it is
advisable that the last luff movement is UP. Hence, if you calibrated the high
angle point and then luffed down to the low angle point, luff up again very
slightly when at the low angle to ensure even distribution of pressure
between your cylinders.
4. Enter calibration mode and select F-02 “Calibrate load for selected winch”.
5. When prompted dial in the current loading including hook blocks and slings.
Press ENTER to store this load.
6. The prompt will now change to show S-01. This indicates the number for the
calibration section you now wish to calibrate. Ramp the display to the
desired section number (see previous Section 5.6.1. for instructions on
choosing section numbers) and, after ensuring the crane and load are
motionless (stable), press ENTER. If there is still some movement in the
load, allow time for settling.
7. The bottom display window now responds with either a “-LO-“ or “-HI-”
prompt. This indicates that you now need to luff to a new angle that is either
lower or higher respectively than the current boom angle. “-LO-“ means luff
down and “-HI-“ means luff up. Luff the boom to this new angle (observe the
top display window shows the current boom angle as it varies). If you
started at a high angle and have now luffed down to a low angle, luff up
again very slightly to ensure the pressures in the cylinders are evenly
distributed. Check the load is not swinging, then press ENTER.
8. The calibration for this boom section is now complete. Refer to previous
Section 5.6.1. for instructions on selecting further boom lengths (or
sections) to calibrate and then calibrate these sections as described in
steps 1 to 7 above.
Summary of Contents for RCI-1502 LM
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Page 53: ...Appendix 8 1 Data Logging on RCI Systems ...
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Page 60: ...Data Logging on RCI Systems Example Lift Cycles ...
Page 65: ...Appendix 8 2 Drawings ...
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Page 71: ...U N C O N T R O L L E D C O P Y ...
Page 72: ...APPROVED BY TOL 0 0 0 1 2 3 4 55 26 2 0 7 2 8 9 1 1 1 1 0 7 5 6 2 ...
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Page 74: ...APPROVED BY TOL 0 0 0 1 22 3 4 5 6 0 22 2 1 7 8 98 1 7 8 98 7 8 98 7 8 98 1 0 9 8 3 6 8 3 ...
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Page 76: ... APPROVED BY 0 1 2 22 3 3 3 TOL 4 4 23 4 232 22 3 242 4 2 32 2 3516 7 8 7 7 9 2 3 42 4 2 ...
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Page 78: ... APPROVED BY 0 1 2 22 3 3 3 TOL 4 4 23 4 232 22 5 0 42 4 2 3617 8 9 8 8 2 ...
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