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Tuning
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3.3.1 Preparing the Source for APCI Operation
To prepare the source for APCI tuning when the instrument is in ESI mode:
1.
Prepare the syringe according to the procedure in
, loading it with API
Setup Solution from the Startup Kit.
2.
Click
Press for Standby
on the lower right of the Tune window.
3.
Disconnect the nebulizer gas line and both electrical connections from the front
panel.
4.
Remove the ESI probe.
5.
Insert the APCI probe into the source, tightening the two thumbscrews.
6.
Connect the APCI nebulizer and desolvation gas lines at the front panel.
7.
Open the source enclosure cover.
8.
Remove the blanking plug from the corona pin mounting contact, and fit the corona
discharge pin (
). Align the tip of the corona discharge pin with the tip of
the sample cone.
9.
Close the source enclosure cover.
10. Connect the electrical lead to the Source/Probe receptacle on the front panel.
11. Click
Press for Operate
.
The source is now ready for APCI operation.
Caution:
The ion source block is hot. It can reach 150 °C, maintaining its set
temperature, even with the source enclosure removed.
STOP
Attention:
Do not start the liquid flow until the gas flow and probe heater are switched on
and the probe inserted.