EM 9250
Operator’s manual
95
UK
- In this phase, it is possible to perform a new acquisition of the rim planes.
- Lowering the guard confirms the selection that was made (manual width entry or wheel
type selection) and a spin is performed and the wheel width is automatically measured.
Note:
- automatic width acquisition is re-enabled only with a new acquisition of the automatic
internal measuring arm;
- if the wheel guard is closed or in the case of a fault of the sensor located on the guard,
the machine will automatic setup for manual width entry when the internal measuring
arm is moved to the rest position.
As a geometric value is displayed, the corresponding indicator on the display lights up.
- Check the values measured and then return the arm to the rest position.
- If an incorrect value has been acquired during the measurement phase, move the arms
to the rest position and then repeat the operation.
IMPORTANT
bear in mind that the wheel's rated diameter (e.g. 14”) refers to the planes on which
the tyre beads rest, which are obviously inside the rim. The values 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
thickness of the rim. This means that the data measured on wheels with different thick-
nesses 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 geometrical data can be entered in
manual mode by following the procedure indicated in the paragraph "entering wheel
dimensions - for models with manual inner sensors (distance and diameter)".
For models with automatic
inner (distance and diameter)
sensor and automatic and outer
mechanical (width) measuring
sensors
To enter the distance, diameter and width
values automatically, proceed as follows:
- bring the automatic internal measuring
arm (A, Fig. 8) into contact with the inner
side of the rim as shown in Fig. 11 and at
the same time bring the automatic external
measuring arm (B, Fig. 8) into contact with
the outer side Fig. 12a.
- Take great care to position the arm correctly
so as to ensure accurate data reading.
12a
