6 General Maintenance
160 5977B Series MSD Operating Manual
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
• Methanol (reagent-grade)
• Methylene chloride (reagent-grade)
• Acetone (reagent-grade)
• Ultrasonic bath
Procedure
1 Disassemble the EI HES. (See “To Disassemble the EI HES” on page 157.)
2 Collect the following parts to be cleaned: (See Figure 50 on page 161.)
• 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)
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