14.1 Filters (continued)
Ventilation filter
The ventilation filter should be changed if the filter has a
darkness of 2-3 on the soot chart scale. Use a screwdriver to
pry open the filter holder from the slots on each side. Change
the filter cartridge and refasten the filter holder.
14.2 Sample Line and Probe
The sample line and probe should be cleaned regularly to
release particle deposits and to prevent early wearing due to
corrosion.
To clean the hose, disconnect from the analyzer end and
the probe end, blow out the line with short bursts of air from
an air compressor, and hang up to dry overnight so that ex-
cess water may drain out.
14.3 Sensors
During the J2KN-Pro start-up procedure, each sensor is ze-
roed using fresh air as the reference point, except for the O2
sensor which is calibrated to 20.9%. The status of each sen-
sor is permanently monitored by the instrument. The sensor’s
life span is shortened by the exposure to high concentration
gases above the measurement range. The output values of
the sensors should be in the range of:
O2 OO/105 (white) 11000 mV to 13000 mV
O2 5FO (black) 17000 mV to 24000 mV
All others -100 mV to +100 mV
If an error message is displayed during the start-up phase
and cannot be cleared despite several restart attempts,
please call an authorized service center for troubleshooting
advice.
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