Cleaning in process

This article explains the Cleaning in Progress message shown on the analyzer during an active ASR® cleaning cycle.

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Message Meaning

Cleaning in Progress is an event notification, not an alarm. It indicates that ASR® cleaning is currently active.

The message is typically displayed for 2 to 5 minutes.

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System Behavior During Cleaning

• Measurement is temporarily inactive during the cleaning cycle.
• The last valid measured value is held (frozen) on the instrument display and mA output.
• Control functions are temporarily disabled during cleaning.
• Calibration is not possible while cleaning is active.

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Calibration Recommendation

Do not calibrate immediately after ASR® cleaning.

Wait 15 to 30 minutes after cleaning has finished to allow the sensor signal to stabilize before starting calibration.

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Recommended Cleaning Schedule

If possible, schedule ASR® cleaning for off-hours (for example around midnight) or for a time window when no operator is on site.

• This reduces confusion caused by temporary “Cleaning in Progress” messages during active shifts.
• It helps avoid calibration attempts during or directly after cleaning.
• Keep the 15 to 30 minute stabilization period before calibration.

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Summary

The Cleaning in Progress message confirms that ASR® cleaning is running normally. During this period, measurement and control are temporarily paused. After cleaning, allow sufficient stabilization time before calibration for reliable results.