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User Maintenance
API Source Maintenance ______________________________________________________
4-18
___________________ LCQ Deca XP Plus Hardware Manual ________________
6. Install the APCI probe into the slider. Rotate the APCI probe so that the
heater plug is as close as possible to the heater plug hole in the APCI
flange. Then install the heater plug into the hole in the APCI flange.
7. Continue to rotate the APCI probe, if necessary, until the metal hook
attached to the half-moon shaped heater retainer is as close as possible to
the heater plug hole in the APCI flange.
8. Move the ground wire away from the vaporizer casing.
9. Mount the slider and APCI probe to the flange.
10. Reinstall the corona discharge needle by inserting it into the socket in the
corona discharge needle assembly.
Go on to the next topic: Reinstalling the APCI Probe Assembly.
Reinstalling the APCI Probe Assembly
To reinstall the APCI probe assembly onto the XP Plus, follow the procedure
described in the topic Installing the APCI Probe Assembly in the Changing
API Probe Assemblies chapter, or place the APCI probe assembly in its
storage container.
Maintaining the ESI Probe
The ESI probe requires a minimum of maintenance. If the fused-silica
sample tube is plugged or broken, you need to replace the sample tube. You
can replace the sample tube without disassembling the ESI probe. However,
to clean interior surfaces or replace the electrospray needle or needle seal, you
need to disassemble the ESI probe.
The procedures described in this topic are:
•
Removing the ESI probe assembly
•
Disassembling the ESI probe assembly
•
Removing the ESI nozzle, needle, and needle seal
Note. You should flush the ESI probe at the end of each working day by
flowing a 50:50 methanol/water solution from the LC through the ESI
probe. Refer to the topic Flushing the Sample Transfer Line, Sample
Tube, and API Probe on page 4-6.
Note. Wear clean gloves when you handle ESI probe components.
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