Ionics Instruments 2004 Page 10-4 DLM 30007-08 Rev. A
If the pump is not turning and the analyzer is operating (Measurement menu or
Grab Sampling RunTime menu is displayed), contact Ionics Instruments for
instructions.
If the pump is turning, close the analyzer cover and follow the steps below to
isolate the problem.
On-line Sampling
If there is no flow through analyzer, the 60 µm filter may be clogged and
should be replaced. A clogged filter should cause the pressure of the sample
stream to drop below 5 psi on the sample inlet pressure gauge.
The 1/16"-OD Teflon outlet tubing may also have been overtightened and has
collapsed. To check the outlet tubing:
1. Turn off the power on the analyzer.
2. Use a 1/4" wrench to remove the Teflon tubing from the bulkhead
fittings.
3. Inspect the tubing in the region of the ferrule. If the ferrule has
compressed the tubing excessively or if it is completely closed, the
tubing will need to be cut. Then install a new 1/16" Valco ferrule or
replace the tubing. Replacement ferrules and tubing are available
from Ionics Instruments.
Grab Sampling
The 1/16"-OD inlet line may be clogged or the inlet or outlet tubing may have
been overtightened and has collapsed. To check the inlet tubing, make sure
the analyzer is operating, then briefly remove the inlet Teflon tubing from the
sample container. The sample pump should draw a small amount of air into
the tubing. Replace the tubing in the sample container, making sure that the
end of the tubing is below the liquid level. Observe the small air bubble being
drawn into the analyzer. Observe the liquid flowing out the outlet tubing.
If air is not drawn into the analyzer or water is not flowing out of the analyzer,
inspect the ends of the tubing as described above and replace the tubing if
necessary.
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