Waters Xevo TQ MS, Operator And Maintenance Manual, Page: 59 / 184

Operating the source isolation valve 4-11
Operating the source isolation valve
You must close the source isolation valve to isolate the source from the
instrument vacuum system for certain maintenance procedures.
Required material
Chemical-resistant, powder-free gloves
To close the source isolation valve before starting a maintenance procedure
1. Prepare the instrument for working on the source (see “Preparing the
instrument for working on the source” on page 4-7 ).
2. Pull the source enclosure release (located at the bottom, right-hand side)
outwards and swing open the enclosure.
Warning:
The source components can be contaminated with
biohazardous and/or toxic materials. Always wear
chemical-resistant, powder-free gloves while performing this
procedure.
Warning:
To avoid electric shock, ensure that the instrument is
suitably prepared before commencing this procedure.
Warning:
The source can be hot. To avoid burn injuries, take
great care while working with the instrument’s source enclosure
open.
Warning:
To avoid puncture wounds, take great care while
working with the source enclosure open, because the ESI probe
tip is sharp.