Waters Xevo TQD, Overview And Maintenance Manual

Page: 96 / 250

4 Maintenance Procedures
96 March 14, 2014, 715004387 Rev. B
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 according the procedure on page 88 , “Preparing
the instrument for operations on or inside its source” .
2. Pull the source enclosure release (located at the bottom, right-hand side)
outward, and swing open the enclosure.
Warning:
To avoid personal contamination with biohazards or
toxic materials, and to avoid spreading contamination to
uncontaminated surfaces, wear clean, chemical-resistant,
powder-free gloves when working with the source components.
Warning:
To avoid electric shock, before beginning this procedure,
prepare the instrument according to the procedure on page 88 ,
“Preparing the instrument for operations on or inside its source” .
Warning:
To avoid burn injuries, take great care while working
with the instrument’s source enclosure open; the source can be hot.
Warning:
To avoid puncture wounds, take great care while
working with the source enclosure open if one or both of these
conditions apply:
• An ESI probe is fitted (the probe tip is sharp).
• A corona pin is fitted (the pin tip is sharp).