IM 11M10A01-03E
A-4
4. Maintenance
When this sampling unit is used with OX100 serise Oxygen Analyzer, if the sampling
unit is not properly maintained the life of the Oxygen Analyzer sensor will be adversely
affected, drift will occur or the instrument will not calibrate.
Frequent filter maintenance is particularly important. If zero or span need frequent
adjustment, check the filter first.
4.1 Replacing the activated carbon pack
(1) Remove the tubing from the case’s lid.
(2) Turn the lid counterclockwise to open it.
(3) Remove an old filter pack.
(4) Open a new filter pack and follow the steps below, referring to the figures, to put it
into the case.
* Shape the pack into cylinders (Figure 1).
* Put it into the case by pushing it while pulling the tug 1 to puff out the pack and
folding the both top corners 2 and 3 of the pack outside (Figure 2).
* Push the pack into the case until the top of the pack sinks under the brim. Thrust the
pipe protruding from the back of the lid onto the top center, not on the tug, and
tighten the lid securely (Figure 3).
(5) Connect the tubing to the lid.
1
2
3
AP103E.eps
Figure 1.
Figure 2.
Figure 3.
4.2 Maintenance of the disk filter attached to the gas inlet
(1) Disconnect the fitting from the sampling gas inlet.
(2) Remove the filter with tweezers.
(3) Clean the captured foreign substances out of the filter by air purges.
(4) Replace the restored filter with its smooth surface facing to the gas inlet.
* When the filter becomes clogged shortly after the restoration, the filter needs to be
replaced.
