Characteristics In Continuous Operation - Hach LANGE LICO 500 User Manual

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4.4 Characteristics in continuous operation

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The Main Menu is displayed when diagnostics are completed.
See section 5.1.3 Main Menu on page 18
After a continuous operating time of more than 24 hour without
switching off the instrument we recommend to perform a new
calibration with a distilled water cuvette/sample cell.
After a continuous operating time of more than 7 days without
switching off the instrument we recommend to switch off and on the
instrument to perform a new system check with filter adjustment
and lambda-calibration.
for a detailed description.