Section 6 Maintenance - Hach LXV321.99.00001 User Manual

Section 6 Maintenance
Potential chemical and biological eye and skin hazards.
Only qualified personnel should perform the tasks described in this section of the operating
manual.
The cleanliness of the measurement windows in the sensor head is critical to the accuracy
of the measurement results!
Cleaning the instrument
Clean the instrument with a damp, lint-free cloth.
Cleaning the measurement windows
The windows are made of sapphire glass. If required, they can be cleaned with any
conventional cleaning agent and a soft cloth. In the case of very stubborn deposits, clean
with a soft cloth soaked in 5% hydrochloric acid.
Observe the safety conditions and wear protective clothing!
• Safety glasses
• Gloves
• Overalls
C A U T I O N
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