GMI PPM Gasurveyor 500, User Handbook Manual

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PPM GASURVEYOR 500 USER HANDBOOK
26
Filter Replacement
A cotton particulate filter is fitted behind the instrument
inlet nozzle to minimise the danger of moisture and dust
ingress.
Caution: The instrument should never be switched on
without a filter installed.
If a blockage occurs the ‘SAMPLE FAULT’ indicator is
displayed. Check the sample line and probe handle for
blockage. Press Button One
to clear the ‘SAMPLE
FAULT’ message. Replace the instrument filter if the
message does not clear.
To replace the filter, proceed as follows:
1) Use a two pence coin, or similar, to locate in the
slot of the inlet nozzle, then unscrew in an anti-
clockwise direction to remove both the nozzle and
filter.
Figure 4.1 Filter Replacement