5-8 Maintenance Procedures
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 work performed on the source” on page 5-7).
2. Open the instrument’s access door.
3. Open the source enclosure door by releasing both spring-clips and
lowering the door towards you.
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 access door open.
Warning: To avoid puncture wounds, take great care while
working with the source enclosure door 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).
Caution: Do not apply any downward force to the source
enclosure door while the door is open.
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