5 Maintenance
Sources
Agilent 6475 Triple Quad LC/MS System User Guide 67
Sources
The following procedures describe periodic maintenance for the components
that make up the source.
Removing an Electrospray or Agilent Jet Stream source
Before you begin:
• Do a complete auto tune. If an auto tune is not available, do a check tune.
• If the tune report does not show good results, tune the instrument. If needed,
change the source to one that supports auto tune.
• Put the system in Standby mode.
In the Tune view or context, turn down the gas temperature as low as possible.
Leave the gas flow on for 30 minutes to cool the source.
1 For Electrospray (ESI), disconnect the nebulizer sample line.
2 For the dual ESI or dual AJS source on TOF and Q-TOF systems only, remove
the second nebulizer. Disconnect the nebulizer sample line and sample
nebulizer gas tubing.
3 Disconnect the heating cable.
4 Disconnect the sheath gas line at the connector and unplug it.
5 Disconnect the AJS HV cable delivering AJS nozzle voltage.
6 Disconnect the Multimode cable delivering AJS nozzle voltage.
7 Open the latch of spray chamber.
8 Open the spray chamber.
9 Remove the spray chamber by lifting it along the axis of its hinges.
The spray shield can be hot. Be careful not to burn yourself when you remove
the spray shield.
10 If you are changing to a different source type, remove the spray shield.
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