Maintenance
49
Symptom
Possible Cause
Corrective Action
Instrument
does not
store new
data
Memory is full.
Instrument is in Survey
mode.
Delete or transfer historic data.
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.
Flow obstruction.
Internal pump failing,
indicated by inability to
adjust flow rate to full
range.
Filter Cassette clogged or
has mass loading.
Attach both the input and the
exhaust port into the duct.
Remove obstruction if still
present. Press any key to
bypass.
Factory service may be
required.
Replace the filter cassette. See
the maintenance section of the
manual.
Laser Error
indicated on
front screen
Laser background is too
high.
Laser is failing
Remove and clean inlet nozzle.
Pay close attention to the tip of
the nozzle that is inserted into
the instrument to ensure it is
clear of any contamination.
Factory service may be
required.
Filter Error
indicated on
front screen.
Filters need to be replaced Replaced the filters per
instructions in the maintenance
section of this manual. Make
sure to reset the filter mass and
date once the filters have been
changed.
