5 Maintenance
Sources
Agilent 6475 Triple Quad LC/MS System User Guide 63
Cleaning the spray chamber - weekly
Perform this maintenance weekly or whenever symptoms indicate that
contamination exists in the spray chamber and normal daily cleaning does not
correct the problem.
Tools needed:
• Clean powder-free nitrile gloves
• Clean lint-free cloth
• LC/MS-grade isopropanol
• LC/MS-grade water
• Clean wash bottle
• 4000 grit abrasive paper
To perform weekly cleaning of the spray chamber,
1 Put on clean powder-free nitrile gloves.
2 Disconnect the nebulizer sample line and sample nebulizer gas tubing from
the nebulizer.
3 Disconnect all cables and tubings from the instrument.
4 Open the latch of spray chamber.
5 Open the spray chamber.
6 Put the source under a fume hood.
7 Dampen a clean lint-free cloth with a mixture of LC/MS-grade isopropanol and
LC/MS-grade water. For Multimode, be careful not to touch thermocouple
probe.
8 Wipe the interior of the spray chamber with a clean lint-free cloth.
9 Make sure you wear clean gloves. Use a tech wipe to hold the parts as you
remove them. They will be warm.
10 Clean spray shield, capillary cap, end plate and contact ring under fume hood.
Carefully remove the canted coil spring from the capillary cap before cleaning.
11 Use 4000 grit abrasive paper to clean contaminants from the parts.
12 Put the spray shield, capillary cap, end plates and contact ring in the beaker.
13 Add a 50:50 mix of LC/MS-grade isopropanol and LC/MS-grade water in a
beaker.
14 Put the beaker in sonication for 5 minutes.
15 Drain the solvent and remove the parts from the beaker.
16 Dry the parts by using nitrogen gas.
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