MSA SIRIUS Instruction Manual page 39

5. Remove the rubber bulb holder from the end of the bulb and set the bulb holder on a
clean surface.
6. Open the Bulb Cleaning Kit, 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 forefinger.
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.
NOTE:
Methanol can give a delayed, high response on the CO channel. 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.
Figure 20:
Cleaning the PID Bulb
Warranty, Maintenance, and Troubleshooting
BULB
LENS
COTTON
SWAB
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