Maintenance
Alarm does not
turn on
correctly
Check the alarm settings in the
Settings->Alarm screen
Make sure the logging interval
and time constant are set as
short as possible (30 seconds
or lower)
Alarm output wired with
reverse polarity
Alarm wires are polarized.
Voltage input must be wired to
alarm input (+)
Instrument
does not store
new data
Delete or transfer historic data
Instrument is in Survey
mode
The instrument does not store
data in survey mode. Can to
manual or program log mode
Flow Error is
indicated on
front screen
If sampling from a duct,
instrument may have
problems overcoming
pressure differences
Attach both the input and the
exhaust port into the duct
Remove obstruction if still
present. Press any key to
bypass
Internal pump failing,
indicated by inability to
adjust flow rate to full
range
Factory service may be
required
Filter Cassette clogged
or has mass loading
Replace the filter cassette. See
the maintenance section of the
manual
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