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7.
Remove the 2 screws securing the differential aperture support to the ion guide support
rods using the 3-mm Allen wrench, and then remove the differential aperture support and
ion guide from the pumping block.
Note:
The ion guide is attached to the differential aperture support.
8.
To detach the ion guide from the differential aperture support, remove the 4 ion guide
securing screws using the 2.5-mm Allen wrench.
Figure 3–10:
Ion guide
3.9.2
Cleaning the differential aperture
Required materials:
•
Chemical resistant, powder-free gloves.
•
Suitable glass vessel in which to completely immerse the differential aperture when
cleaning.
•
HPLC-grade deionized water.
•
Waters MS Cleaning Solution (part number 186006846) or HPLC-grade (or better) 1:1
methanol/water.
•
Holding container for used cleaning solution.
•
Ultrasonic bath.
•
Source of oil-free, inert gas (for example, nitrogen) for drying.
Warning:
To avoid personal contamination with biohazards or toxic materials, always wear
chemical-resistant, powder-free gloves while performing this procedure.
Removing the ion guide
Ion guide securing screws
(fourth screw is obscured)
Differential aperture support
June 28, 2016, 715003956 Rev. C
Page 41
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