Cleaning The Source Components - Waters Xevo TQD Operator's, Overview And Maintenance Manual

• The oil changes color (darkens) over time.
• After running the pump for 12 to 48 hours, it is common to see a few
drops of oil near the filler plug. Excess oil around the lip of the filler
plug will run down and drip off the pump once the pump reaches
operating temperature.
• When the pump begins to run at normal operating temperature,
spilled oil smells slightly.

Cleaning the source components

Clean the sample cone and cone gas nozzle when these conditions apply:
• The sample cone and cone gas nozzle are visibly fouled.
• You dismissed LC and sample-related causes for decreased signal
intensity.
See page 4-28.
If cleaning the sample cone and cone gas nozzles fails to increase signal
sensitivity, also clean the extraction cone. See
If cleaning the extraction cone fails to increase signal sensitivity, clean the ion
block and isolation valve. See
If cleaning the ion block and isolation valve fails to increase signal sensitivity,
also clean the ion guide assembly. See
page
page 4-44.
page 4-55.
Cleaning the source components
4-37.
4-27