MSA SIRIUS Instruction Manual page 41

1. Turn OFF the instrument and, while in a non-hazardous and non combustible area,
remove the battery pack.
2. Unscrew the captive screw from the clear filter housing on the back of the instrument
and remove the filter housing.
3. Gently remove the ion chamber cover assembly (see Figure 21) from the instrument
and set the assembly on a clean, lint-free surface.
4. Using a small, flat-blade screwdriver, gently remove the ion chamber from the cell
holder and discard (Figure 21).
SREWDRIVER
Figure 21: Ion Chamber Removal
ALIGNMENT TAB
FLAT-BLADE
Warranty, Maintenance, and Troubleshooting
ION CHAMBER COVER
ALIGNMENT NOTCH
ION
CHAMBER
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