Mondolfo Ferro MT 3600 up Manuel D'utilisation page 89

Take great care to position the arm correctly so as to ensure accurate data reading.
- Keep the arms in contact with the rim until the machine has acquired the values.
- Return the arms to their rest position.
- During the spin screen displays the geometric data of distance, diameter and width.
- If an incorrect value has been acquired during the measurement phase, move the arms
to the rest position and then repeat the operation.
Measurements can be taken also by moving one measuring arm at a time. In this case,
sensors can be used with no pre-set order. Pay maximum attention to the measured
data since they are influenced by the stored ones.
After setting geometric dimensions correctly and returning the sensors to the rest posi-
tion, the unbalance values recalculated according to the new dimensions are displayed.
IMPORTANT
Bear in mind that the wheel's nominal diameter (e.g. 14") refers to the planes
on which the tyre bead rests, which are obviously inside the rim. The val-
ues measured are with reference to external planes and, as a result, are
smaller than the nominal values due to the thickness of the rim itself. The correction value
therefore refers to an average rim thickness. This means that the data measured on wheels
with different thicknesses may vary slightly (2 or 3 tenths of an inch maximum) from the
rated values. This is not a lack of accuracy of the measuring devices, but reflects reality.
If the automatic measuring arm fails to operate, the geometric data can be entered
manually by following the procedure indicated in the "manual wheel data entry" section,
function present within the utility and configuration programmes.
Operator's manual MT 3600 - MT 3600 C Up
13a 13b
89