Thermo Scientific G100 Series, Operating Manual

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Problem Solving
Self-test Warning Messages
8-2
G100 Range CO
2
Analyser Thermo Scientific
Self-test Warning Messages
The following warnings may be displayed during the self-test period when the instrument is switched
ON.
Warning Description
CheckMemory The instrument only has space to store less than 50 readings
before it is full. The exact number can be checked using the
‘View Readings’ option.
Memory Full There is no more space in memory to store readings. Both
the store and log options will be disabled until the memory
is cleared. The readings should be downloaded to PC using
the optional download software before memory is cleared.
Battery Low The instrument does not have enough power to operate for a
full day. The instrument should be recharged or connected
to an external power supply.
Service Due It has been 12 months (or more) since your instrument was
returned to the manufacturer for a service. The performance
and accuracy of the instrument may be impaired.
Low Flow The instrument’s gas inlet (or outlet) may be blocked. This
warning is most commonly caused by a water-logged or
dirty sample filter. Change the sample filter and check for
obvious blockages in the sample tubes. Alternatively, a
small amount of adjustment can be made to the low flow
detection point to compensate for minor changes in the per-
formance of the pump fitted to the instrument.
Check CO
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Cal.
This warning is most commonly caused by an incorrect user
calibration. Try recalibrating the sensor or press ‘Return to
factory settings’. If the warning persists it may be caused by
dirt or damage to the infrared sensor. The instrument will
need to be returned to the manufacturer for service/repair.
Ref. Fault This may be caused by dirt or damage to the infrared sensor
in the instrument. The instrument will need to be returned to
the manufacturer for service/repair.
*
Invalid
Config. The instrument has detected a problem with the configura-
tion parameters. The instrument will need to be returned to
the manufacturer for service/repair. Most likely to be caused
after firmware update.
Change O
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Cell The oxygen cell has not been changed for at least 2 years; its
performance and accuracy may be impaired. The instrument
will need to be returned to the manufacturer for service.
Change Pump The pump has exceeded its recommended run-time and
should be changed. The instrument will need to be returned
to the manufacturer for service.