7.1
SECTION 7 ROUTINE MAINTENANCE
7.1 Replacing fan filter element
The external fan filter element should be checked every six months in laboratory
conditions, for environments with a high dust content this period should be reduced.
The filter element is washable and in laboratory or light dust conditions may be washed
and refitted rather than replaced.
Remove power from the analyser and unclip the filter cover complete with
filter element and plastic gauze.
Remove the plastic gauze and old filter element from the cover.
Fit new filter into cover followed by plastic gauze.
Clip cover back onto fan.
7.2 Replacing sample filter element
Analysers fitted with a sample filter should have the element replaced every six months,
or more frequently if required.
WARNING
Sample and calibration gases may be toxic. Stop sample flow into
analyser to avoid releasing gas into atmosphere when sample filter
cap is removed
Stop sample flow to analyser.
Use spanner provided to unscrew sample filter cap.
Remove old filter element and rubber ’o’ ring.
Fit new sample filter and rubber ’o’ ring. Ensure that rubber ’0’ ring is
properly seated on the filter cap.
Fit sample filter cap and tighten using spanner.
Verify that there are no leaks
7.3 Cleaning
The exterior of the analyser should be regularly cleaned using a slightly damp cloth.
Remove power before cleaning. Ventilation holes must be kept clear. Do not use
solvents or abrasive cleansers to clean the analyser.
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