M
AINTENANCE
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Sievers M500e TOC Analyzer
Operation and Maintenance Manual
DLM 78510-02 EN Rev. B
285
SUEZ © 2022
Replacing the In-Line Filter Element
To prevent clogging in online configurations, a filter is installed on the sample inlet line.
The lifetime of the filter element depends on the level of particles in the water samples.
If monitoring the TOC of the feed water (prior to purification), the filter element will need
to be replaced more often than if monitoring the water after purification.
If the filter element clogs too frequently, contact Technical Support or your local service
provider to receive help in the selection of larger-capacity filters. As the filter is used, the
flow rate of water through the iOS System will decrease and can even stop. A simple
way to determine if the filter element needs to be changed is to periodically measure the
flow rate of water out the waste line from the iOS System and replace the filter element
when the flow rate starts to decrease.
Replace the filter element on a routine basis to prevent clogging.
To replace the filter element
1. If the Analyzer is taking measurements, click the
Stop Analysis
button.
2.
Shut off the water to the sample inlet system.
3.
On the Analyzer’s Home screen, click the
Power Off
button to close all the
files.
4.
Turn the rotary power switch (located on the left outside panel of the Analyzer)
to the
Off
position to complete the power off cycle.
5.
Open the door to access the inside of the Analyzer.
6.
Remove the filter by loosening the nuts on the 1/4" Teflon tubing and
disconnecting the tubing.
7.
Position the 3/4" wrenches on the ends of the filter. Loosen the adapter on the
inlet side of the filter.
