Waters Xevo TQ-S cronos, Обзор и руководство по обслуживанию, Страница: 97 / 175

Warning:
To avoid personal contamination with biologically hazardous, toxic, and corrosive
materials, wear chemical-resistant, powder-free gloves when performing this procedure.
1. Vent and shut down the mass spectrometer (see the mass spectrometer’s online Help for
details).
Warning:
To avoid personal injury, as well as damage to the roughing pump
and mass spectrometer, disconnect the power cords for the mass spectrometer
and roughing pump from the main power source.
2. Disconnect the power cords for the mass spectrometer and the roughing pump from the
main power source.
Warning:
To avoid burn injuries, allow a hot source to cool for at least 30
minutes before proceeding.
Warning:
To avoid puncture wounds, take great care while working with the
source enclosure open if one or both of these conditions apply:
• An ESI probe is fitted (the probe’s tip is sharp).
• A corona pin is fitted (the pin’s tip is sharp).
3. Remove the source enclosure (see Removing and refitting the source enclosure (Page
78) ).
Rationale:
Removing the source enclosure aids access to the ion block assembly.
4. Close the source isolation valve (see Closing the source isolation valve (Page 80) ).
5. Use the combined 2.5-mm hex wrench and cone extraction tool to unscrew the four captive
ion block assembly securing screws.
Figure 4–16: The ion block assembly securing screws
Ion block assembly securing screws
6. Remove the ion block assembly from the PEEK ion block support.
January 10, 2022, 715006200 Ver. 01 (previously released as Rev. A)
Page 97