Mitutoyo HM-200A Series - Periodic Inspection; Cleaning External Parts; Cleaning the Objective Lens

No. 99MBG127A
6-2
6.2 Periodic inspection
For reference:
To maintain optimal testing machine performance over an extended period, it should be
periodically inspected by a Mitutoyo service engineer. For detailed information, contact
your dealer or the nearest Mitutoyo Service Center.
Check the items below routinely in every test.
Table 6-1
Check point Inspection point Treatment Precautions
1 Indenter
Contamination of
indenter tip
Wipe the indenter. Not to distort the indenter shaft.
2 Objective lens
Contamination of
the lens surface
Wipe the lens. Not to scratch the lens.
3 Eyepiece
Contamination of
the lens surface
Wipe the lens. Not to scratch the lens.
4 Manual XY stage Rust Wipe off rust. Not to touch the turret.
5 Test block Hardness testing Measure the test block.
Not to deteriorate the standard
indentation.
6.2.1 Cleaning External Parts
Gently wipe off dirt from the exterior using a lint-free and soft cloth. If the contaminations
are persistent, wipe them carefully with a cloth soaked in a diluted neutral detergent and
tightly squeezed, then wipe dry with another cloth.
Important
Do not use benzene, thinner, or chemically treated cloth for cleaning since the surface
may discolor and the paint may peel.
6.2.2 Cleaning the Objective lens
Always keep the objective clean and free of dust, oil, and fingerprints.
If contaminated, clean the objective in the following manners.
• Dirt: Gently wipe it off with a clean lens brush, soft brush, or gauze.
• Oil, finger print: Gently wipe with tissue paper for the lens or a gauze dampened with
a small amount of absolute alcohol (ethanol, methanol).