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32
64171LMP
Revision 3
PS200-LMP
PORTABLE GAS MONITOR
9. Operator Maintenance
9.1. Cleaning
Only use a moist, non-abrasive cloth to clean the outer, impact-resistant casing of the monitor. Rub
the cloth over the outer casing to remove any dirt and grime. In extreme cases, use a mild soap
solution with a non-abrasive cloth to remove any stubborn marks.
9.2. Replace Instrument 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.
9.2.1 Replacing the Hydrophobic (Water) Filter
Figure 41: Hydrophobic Filter Replacement
1. Using a No. 1 Pozidriv
®
screwdriver, unscrew the 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.
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.