Cleaning The Lamp Window - Waters Quattro Premier XE Operator's Manual

12. Fit the APPI lamp drive assembly to the source enclosure and perform a
source pressure test.
See also:
step 12

Cleaning the lamp window

The transmission of the high-energy photons responsible for APPI relies on
the cleanliness of the magnesium fluoride lamp window. The window should
be cleaned to keep the surface clear of contamination and avoid reduced
sensitivity.
Required materials
• Chemical-resistant, powder-free gloves
• Lint-free cloth
• Methanol or isopropyl alcohol
To clean the lamp window
1. On the MassLynx Tune window, click Press for Standby, and confirm
that the instrument status indicator is red.
2. Wait for three minutes for the desolvation gas to cool the probe and
source.
3. Click
To confirm the integrity of the source exhaust
Warning:
system, you must perform a pressure test on the source, as
described in the Waters Source Pressure Test Unit
Operator's Guide.
"To install the Combined APPI/APCI Source" on page
through step 19.
to stop the nitrogen flow.
Cleaning the lamp window
2-5,
4-7