Warning - MSA Sirius Mode D'emploi

Figure 6-1. Cleaning the PID Bulb
6. Open the Bulb Cleaning Kit (P/N 10049691), consisting of cleaning
implements and laboratory-grade methanol.
7. Moisten a clean cotton swab with methanol.
8. Hold the middle of the bulb body securely in your thumb and fore-
finger.
9. Using light pressure, rub the side of the swab in a circular motion
over the surface of the window for 60 seconds.
10.Dispose of the swab.
11. Take a fresh swab and repeat steps 7 through 10.
12.Using a clean, dry swab, use light pressure and move the side of
the swab over the window for 30 seconds.
13.Dispose of the swab.
14.Allow the bulb to dry for a minimum of 30 minutes before
proceeding.
Methanol can give a delayed, high response on the CO chan-
nel. When cleaning the bulb, it is important to ensure that all
of the methanol cleaning compound has evaporated from
the bulb before re-installation into the instrument.
15.Once the bulb is cleaned, inspect the bulb window for any dust or
fibers.
NOTE: The bulb window and entire body of the bulb must be dust-
and lint-free before re-assembly into the instrument.
6-4

" WARNING

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