Cleaning and Maintenance
40
Waltron User Manual
9065 Luminescent Dissolved Oxygen Analyzer
7
CLEANING AND MAINTENANCE
7.1
INSPECTION
Whenever possible, it is recommended to inspect the 9065 for the following and correct if
necessary:
Make sure there is no dirt or dust on the instrument.
Check whether the plugs and cables have been inserted correctly.
Connectors that are not used must be covered.
7.2
CLEANING
Only use water (or water with a detergent) to clean the sensor or the outside of the control box.
Warning!
Never use tools to clean the sensor coating. Touching the
coating may cause serious damage to the instrument.
Regular CIP of the process pipes with a suitable cleaning product.
Required cleaning products:
Product- Alkaline cleaner with an NaOH or KOH base.
o
(≤ 95° C, ≤ 5% NaOH or KOH)
Acid cleaner with an HNO
3
or H
3
PO
4
base.
o
(≤ 60° C, ≤ 3% HNO
3
or H
3
PO
4
)
Flow 0 – 10 m/s
NOTE:
Maintenance must be carried out by personnel who are
familiar with the applicable maintenance regulations.
Wear suitable protection against chemicals and pay special
attention to hot cleaning agents.