Monthly maintenance
C A U T I O N
Chemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protective
equipment appropriate to the chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.
C A U T I O N
Chemical exposure hazard. Dispose of chemicals and wastes in accordance with local, regional and
national regulations.
C A U T I O N
Personal injury hazard. Only the reagents supplied by Hach Company may be used in the instrument.
Reagents must be installed and used in a single, contiguous time period as allowed by the instrument.
Partially consumed reagents may not be saved and/or combined and reused.
Complete monthly maintenance to clean the colorimeter and replace the reagent bottles. The
reagents have a nominal use life of 31 days and a maximum use life of 35 days.
Note: The reminder notification "Monthly maintenance [x] days overdue" shows at the top of the display when
monthly maintenance is overdue.
Item supplied by the user:
Monthly maintenance kit
1. Push menu.
2. Select Maintenance>Monthly.
3. Complete the steps that show on the display. The display screens are shown for reference in
Appendix G: Screens—Monthly maintenance on page 95.
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