Waters Xevo G2 QTof, Operator'S, Overview And Maintenance Manual, Page: 83 / 248

Preparing the instrument for working on the source 5-7
Preparing the instrument for working on the source
For safety reasons, you must follow the procedure described below before
working on the source (for example, when changing the probe, installing or
removing the corona pin, operating the source isolation valve, and when
maintaining the source).
To prepare the instrument for working on the source:
1. In the instrument console, stop the LC flow or, if column flow is
required, divert the LC flow to waste.
2. In the instrument console, select source standby and confirm that the
operate indicator is not illuminated.
3. Set the source temperature to 30 °C.
4. Wait for the source temperature, desolvation temperature or APCI probe
temperature to cool.
5. Ensure that the API desolvation gas flow is stopped.
Removal and refitting of the source enclosure
You must first remove the LockSpray or NanoLockSpray source enclosure
from the instrument to perform certain maintenance procedures, or if you are
fitting the optional dual-mode APPI/APCI source to the instrument.
The following procedures apply to both the standard and optional source
enclosures.
Removing the source enclosure from the instrument
Required materials
Chemical-resistant, powder-free gloves
Warning:
To avoid burn injuries, do not touch metal surfaces that
exceed 70 °C.