Thermo Scientific HESI-II Probe, User Manual

Page: 19 / 36

Thermo Scientific HESI-II Probe User Guide 9
3
Removing and Installing the HESI-II Probe
This chapter describes how to set up the API source with the HESI-II probe. You must
remove the HESI-II probe to perform maintenance on the probe.
Removing the HESI-II Probe
Y To remove the HESI-II probe from the API source housing
1. Place the mass spectrometer in Standby mode, and allow the probe to cool to room
temperature.
Wait approximately 20 minutes for the probe to reach room temperature when it has
been operating at high temperature. If the mass spectrometer is connected to an LC
system, leave the solvent flow from the LC pump on while the probe is cooling to room
temperature.
2. If the mass spectrometer is connected to an LC system, turn off the solvent flow from the
LC pump, and then disconnect the tubing from the left side of the HESI-II probe
grounding union (see
Figure 7 on page 10 ).
Note
To install the APCI probe, refer to the Ion Max and Ion Max-S API Source Hardware
Manual .
Contents
• Removing the HESI-II Probe
• Installing the HESI-II Probe
• Adjusting the Probe Position
CAUTION AVOID BURNS . At typical operating temperatures (350 to 450
°
C), the
HESI-II probe can severely burn you. Before removing the probe from the API source
housing, allow the probe to cool to room temperature (for approximately 20 minutes)
before you touch it.