166 of 220 Anatel A643a Maintenance - Anatel A643a
RPS - June 2007 - Edition 12
Operator Manual Anatel
13.5 Air Filter Cleaning
Replacement Kit: P/N FG7013501
Each Anatel A643a Analyzer is equipped with air filters which can become clogged over time,
reducing performance and stressing components. The filters should be checked periodically
and cleaned when necessary to guarantee unobstructed air flow through the instrument. The
frequency of air filter cleaning depends on the ambient environment in which the instrument is
located. Dirtier air demands more frequent filter cleaning.
To service the Anatel A643a’s air filters:
1) Remove both the Water I/O and Electronics Covers as described in the preparatory
procedures in “Preparatory Maintenance Procedures” on page 157.
2) Locate the two air filters on the bottom of the Analyzer enclosure, one positioned at
each end of the instrument.
3) Remove and rinse out the two air filters. Allow them to dry completely before
reinstalling them in the Analyzer.
4) Replace the two Analyzer covers.
5) Restore the sample water supply and re-establish power to the Analyzer.
13.6 Lithium Battery Replacement
Replacement Kit: P/N FG5005601
The Anatel A643a’s lithium battery maintains all non-volatile (user-entered) parameters to
prevent them from being erased from memory during an AC power loss. Although it possesses
up to a 5-year life, the battery will eventually have to be replaced. Code 11: Check Battery
indicates when the lithium battery is dead and must be replaced to ensure its backup
capabilities. The battery replacement kit includes the lithium battery and a cable tie to secure
it in position.
Any logged data will be lost and a Code 4 will be reported when the battery is replaced.
Print the data log as described in “Printouts” on page 117 to ensure a copy of the data.
Fig 13-15 : Anatel A643a Air Filters
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