• When transitioning from Power Save to Operate, Waters recommend that you allow the
instrument to stabilize for one hour before you perform a calibration.
• If the instrument is off, power it up (see Starting the instrument (Page 81)).
3.7 Replacing or refitting the source enclosure O-ring
If the instrument indicates that it has failed a source pressure test, you need to inspect the source
enclosure O-ring to ensure that it is fitted correctly and not damaged.
Required tools and materials
• Chemical-resistant, powder-free gloves
• O-ring removal tool
Warning: To avoid personal contamination with biologically hazardous or toxic compounds,
wear clean, chemical-resistant, powder-free gloves when performing this procedure.
Warning: To avoid burn injuries, allow the ion block assembly to cool before
performing this procedure.
Important: Ensure that the instrument is in Power Save mode before performing this
procedure.
To replace or refit the source enclosure O-ring:
1. Remove the source enclosure from the instrument (see Removing the source enclosure
from the instrument (Page 28)).
2. Inspect the source enclosure O-ring and ensure that it is fitted correctly and undamaged.
August 20, 2021, 715005003 Ver. 04 (Previously released as Revision C)
Page 31
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