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Technical service manual
Replacing the distance zero position sensor (detects rest position of sensor
arm)
In the event of incorrect distance and diameter readings, check that the zero position
sensor functions correctly as described in chapter “98 Displaying internal sensor func-
tion”.
Check the following if the sensor (C, Fig. 2b) does not read:
- the connection flat;
- that the sensor is installed correctly in its housing (see fig.2b, picoflex connector fac-
ing towards rear of machine);
If the zero sensor must be replaced, proceed as described in the paragraph “Distance
sensor”.
In fact, the zero sensor is mounted on the distance sensor board.
Note:
should it be necessary to replace the flat cable of sensor (C, figure 2b), ensure that the
flat cable is reconnected correctly on the board (see fig.2c). The flat cable must be fas-
tened to the base leaving a sufficient length of free cable to allow the sensor to move
without the cable itself twisting around the shaft assembly pulley.
Fig.2c
Replacing/adjusting position of diameter microswitch
- With the measuring sensor in the rest position (fig. “Position 1 with lever fully for-
wards”), check that the microswitch actuator lever is not pressed (contacts 1 and 2
open).
- With the measuring sensor in the operating position (fig. “Position 2 with lever fully
backwards”), check that the microswitch actuator lever is sufficiently depressed to acti-
vate the microswitch. In this position, the actuator lever must still have at least 0.5 mm
of remaining free travel (contacts 1 and 2 closed). If the above conditions are not met,
Summary of Contents for MT 2450
Page 1: ...MT 2450 Code 4 131046_uk 12 2013 Technical service manual...
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