37
TROUBLESHOOTING
5
Chapter 5. -
TROUBLESHOOTING
MALFUNCTION
CORRECTIVE ACTION
The contacts do not return to the pre-
travel position
Verify if any residual dirt entered the movement transducer unit,
inside the measuring armset. This instance requires a special
maintenance action (see chapter MAINTENANCE).
The contacts remain pressed
The malfunction is generally caused by the following reasons:
Residual dirt entered the movement transducer unit, inside
the measuring armset; this instance requires a special
maintenance action (see chapter MAINTENANCE).
Damaging of an element of the mechanical transducer unit
and/or of the transmission unit; this instance requires the
substitution of the damaged and/or worn elements.
The malfunction is generally caused by the following reasons:
Improper use of the product (*)
Improper bore gauge assembly (see correct procedure
reported on this manual)
Loosening of one of these components:
•
Contacts and/or contact extension from the measuring
armset
•
Locking nut for the nosepiece/measuring armset
•
Plug gauge and/or extension and/or rotary spacer and/
or angle from the handle
•
Measuring system (pencil probe from the pencil probe-
holder, or mechanical/electronic indicator from the
indicator holder)
Wearing of the nosepiece;
such situation increases the nosepiece/workpiece clearance,
altering the technical-metrological features of the bore
gauge.
Residual dirt entered the movement transducer unit, inside
the measuring armset; this instance requires a special
maintenance action (see chapter MAINTENANCE).
1
1
2
2
3
4
5
The bore gauge repeatability is not
conform to the technical
specification
MALFUNCTION
CORRECTIVE ACTION
Zero-setting loss
The malfunction is generally caused by the following reasons:
Wearing of one of these elements:
•
Contacts
•
Mechanical transducer unit and/or transmission unit
Loosening of one of these components:
•
Contacts and/or contact extension from the measuring
armset
•
Locking nut for the nosepiece/measuring armset
•
Plug gauge and/or extension and/or rotary spacer and/
or angle from the handle
•
Measuring system (pencil probe from the pencil probe-
holder, or mechanical/electronic indicator from the
indicator holder)
2
(*) The bore gauge repeatability con be partially influenced by the operator skills; on
the next page is described the right procedure to achieve a proper repeatability test
of the bore gauge.
1
Содержание M1 Star MBG
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