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33
64171
PS200
PORTABLE GAS MONITOR
8. Operator Maintenance
8.1. Cleaning
Clean the outer casing of the monitor using a non-abrasive moist cloth. Use a mild soap solution
with a non-abrasive cloth to remove stubborn marks.
8.2. Replacing the Filters
The monitor has 2 filters:
• hydrophobic (water) filter - located behind the filter cover on the front face of the monitor;
• sample inlet (dust) filter - located in the sample inlet connector at the bottom of the monitor.
Inspect these filters periodically for contamination or damage.
8.2.1 Replacing the Hydrophobic (Water) Filter
Figure 52: Hydrophobic Filter Replacement
1. Using a No. 1 Pozidriv
®
screwdriver, unscrew the captive screw.
2. Slide the filter cover away from the display until the locating lugs disengage from the locating
slots.
3. Lift the cover away from the monitor.
4. Remove the hydrophobic filter.
5. Insert a new hydrophobic filter.
Caution: Do not use polishes that contain silicon or solvent to clean the
monitor as these may damage the flammable gas sensor (if fitted).
Do not use abrasive chemicals or strong, volatile chemical solutions
as these could damage the impact-resistant casing.
Revision 12
.1