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This procedure is used to calibrate the potentiometer of the external sensor (width).
It must be performed when the machine requests it by displaying the E4 message, or
when the measured and the actual rim widths differ.
- Hold the
gramme turns on.
- Press the
on the left display, and one flashing "E" will appear on the right one.
- Bring the automatic width measuring arm into contact with the wheel contact flange
as shown in fig. 20.
- Press the enter button
- Return the arm to the rest position.
If the calibration has been carried out successfully, a confirmation message will be
displayed.
If the A20 message is displayed the measuring device position is not correct for cali-
bration. Position it correctly, as already described, and repeat the procedure.
By pressing the
calibration.
MESSAGES ON THE DISPLAYS
The machine can recognise a certain number of malfunction conditions and signals
them to the user by visualising the relevant messages on the displays.
A 3
Wheel not suitable for performing the sensitivity calibration, use a wheel
of average dimensions (typically 5.5"X1440") or larger but with a weight
that does not exceed 40 kg..
A 5
Incorrect dimension settings for an ALU programme. Correct the dimensions
set.
A 7
The machine is temporarily unable to select the requested programme.
Perform a wheel spin, then repeat the request.
A 10
Internal sensor not in the rest position. Return the sensor to the rest posi-
Operator's manual MT 3100 - MT3200
w
idth sensor calibration
buttons until the corresponding light in the "CAL"
key twice to confirm the selection. The "CAL" message will appear
to confirm the measuring sensor position;
key it is possible to exit the programme without executing the
– a – n
(
if present
20
M
otice
essages
)
pro-
95
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