Self Clean Mode - Hach ANATEL PAT700 Operator's Manual

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When the analyzer is powered on after the lamp replacement procedure, the analyzer
performs a lamp test to make sure the replaced lamp is working.

Self clean mode

It is possible to contaminate the analyzer's measurement cell on any water system or after
long-term storage or inactivity. This condition is indicated by suddenly changing or erratic
TOC or resistivity readings. During self cleaning, the ultraviolet lamp oxidizes contaminants in
the cell to alleviate such problems. The analyzer's sample valve opens to allow water to flow
through the cell. The UV lamp turns on to oxidize any organic contaminants, which
subsequently are flushed from the analyzer by the sample flow.
Operator Manual
Maintenance and Troubleshooting – PAT700 Total Organic Carbon Analyzer
Reconnect the lamp power connectors by carefully reinserting the connectors and
locking them in place by twisting the locking rings clockwise.
Close and lock the door.
Restore power to the analyzer.
Anatel