Maintenance and Troubleshooting:
Cleaning Procedures Overview
8-2
Cleaning Procedures Overview
Frequency of cleaning is, in most cases, determined by necessity due
to poor image quality or gross astigmatism level. Recommended
cleaning procedures are given below for parts which operate in
vacuum and which are subject to possible contamination.
LIST OF APPLIED CLEANERS
•
De-ionized or distilled water – H
2
O
•
Ethanol – C
2
H
5
OH
•
Ethanol p/a (Pro Analysis: 99.8% pure) – C
2
H
5
OH
•
Isopropanol
•
Neutral pH cleaning fluid (soap solution)
•
CIF* or SOFT SCRUB (fine abrasive household cleaner)
or 0.05 µm aluminous powder
WA R N I N G !
The cleaning solvents ethanol and isopropanol are highly
flammable! Do not use open flames and do not smoke while
cleaning. Ventilate the room properly.
CLEANING COLUMN PARTS
All column parts are polished before the instrument is delivered. For
this reason only occasional light polishing is required to remove
contamination that may build up on components in the column and
specimen chamber as part of normal operation. Any part that is
exposed to the electron beam should be highly polished, and free of
contamination and / or scratches that can charge and thus degrade
the image.
Parts that can be removed by the general Supervisor / User and
polished include the following:
•
GSED / LFD components
TABLE 8-1
HOUSEHOLD CLEANERS
Country
Name
Austria
CIF
Australia
CIF
Finland
CIF
France
CIF
Germany
CIF
Italy
CIF
Japan
CIF
Netherlands
CIF
Switzerland
CIF
UK
CIF
USA
Soft Scrub
Summary of Contents for Quanta FEG 250
Page 8: ...C vi...
Page 28: ...System Operation Quanta FEG System States 3 10...
Page 108: ...Alignments 1 Gun Alignment 6 6...
Page 114: ...Alignments 154 Water Bottle Venting 6 12 154 Water Bottle Venting...
Page 152: ...System Options Automatic Aperture System 9 4...
Page 154: ...System Options Nav Cam 9 6 401 NAV CAM AUTOBRIGHTNESS...
Page 177: ...System Options Cooling Stage Waterless Cooling Stage 9 29...