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5
General Maintenance
5975/5977 Series MSD Operating Manual
127
To Clean the EI HES
Materials needed
•
Abrasive paper (5061-5896)
•
Alumina abrasive powder (393706201)
•
Aluminum foil, clean
•
Cloths, clean (05980-60051)
•
Cotton swabs (5080-5400)
•
Glass beakers, 500 mL
•
Gloves, clean, lint-free
•
Large (8650-0030)
•
Small (8650-0029)
•
Solvents
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Methanol (reagent-grade)
•
Methylene chloride (reagent-grade)
•
Acetone (reagent-grade)
•
Ultrasonic bath
Procedure
1
Disassemble the EI HES. (See
2
Collect the following parts to be cleaned: (See
•
Filament mount
•
Source mount (does not get abrasively or ultrasonically cleaned)
•
Repeller
•
Source body
•
Extractor lens (5)
•
Post extractor lens 1 (4)
•
Post extractor lens 2 (3)
•
Ion focus lens (2)
•
Entrance lens (1)
These are the parts that contact the sample or ion beam. The other parts
normally should not require cleaning.