GxT V016-01, Ferret 16 GasLink II 5-Gas Analyzer - Manual (Page 20)

20
Routine Maintenance
Low Flow Message
The low flow message can be caused by clogged or dirty filters, excessive
water moisture in the filters, or an extremely cold pump assembly. If you get
a low flow indication, follow the directions below to clear the message.
If the Low Flow message goes away when the sample hose is disconnected,
you have excessive water in the filter system, or the filters are dirty. Run
the extended Purge a couple of times. Make sure there is no water in the
sample probe handle assembly, or in the water separator.
If the Low Flow message still does not go away, disconnect the in-line
filter that is connected directly to the analyzer, and reconnect the sample
hose to the analyzer. This will take the in-line filter out of the sample hose
circuit. If the Low Flow message goes away, replace the in-line filter. If
the Low Flow message is still on, reconnect the in-line filter and replace
the water separator filters.
Purging
During normal operation the bottom filter will be come damp and the upper
filter should remain dry. Providing the bottom filter is damp enough, purging
will clear the hose, upper filter and bowl of water. Purging will not clear
the bottom filter and sample probe handle.
Filter Replacement
The in-line filter can be replaced by simply disconnecting it from the
analyzer and fitting the replacement. The upper and lower filter in the
water separator bowl need to be replaced as a unit. Do not lose the rubber
separator that goes between the filter elements, without it, no filtering will
occur. The filter with the Red Dot goes on the bottom.
Cleaning the Sample Hose
If it becomes necessary to clean the sample hose and handle, use
clean, dry compressed air. Do not blow compressed air through the filter
elements!
How to Extend the life of the NOx and O2 Sensor
The best way to extend the life of your NOx and O2 sensor is to simply
use the analyzer. Leaving it plugged in continually does not extend the
life. The units that are experiencing longer sensor life are used several
time a week. Usage of less than once per month will shorten the life of
the sensors.