If there are hard deposits in the through hole (e.g., marine growth), use 5% sulfuric acid and a
third cleaning swab to remove the deposits. If a hard deposit cannot be removed with 5%
sulfuric acid, contact technical support.
• Before illustrated step 6, make sure that there is no material in the sample inlet and outlet
tubing.
4. Select SENSOR SETUP > [select sensor] > DIAG/TEST > COUNTERS > CLEAN SENSOR to
set the CLEAN DAYS counter to zero.
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