7 General Maintenance
To Clean an EI XTR, SS, or Inert Source
204 5977B Series MSD Operating Manual
To Clean an EI XTR, SS, or Inert Source
Materials needed
• Abrasive paper (5061-5896)
• Alumina abrasive powder (8660-0791)
• 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
• Acetone, reagent grade
• Methanol, reagent grade
• Methylene chloride, reagent grade
• Ultrasonic bath
Preparation
1 Disassemble the ion source. (See “To Disassemble the EI SS or EI Inert
Source” on page 198 or “To Disassemble the EI XTR Source” on page 201.)
2 Collect the following parts to be cleaned for an EI SS or Inert source: (See
Figure 66 on page 206.)
• Repeller
• Interface socket
• Source body
• Repeller block insert
• Drawout plate
• Drawout cylinder
• Ion focus lens
• Entrance lens
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