Maintenance, Maintenance schedule – Hach-Lange POLYMETRON 9611 sc Maintenance and Troubleshooting User Manual
Page 4
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This symbol identifies the presence of a strong corrosive or other
hazardous substance and a risk of chemical harm. Only individuals
qualified and trained to work with chemicals should handle chemicals
or perform maintenance on chemical delivery systems associated
with the equipment.
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Electrical equipment marked with this symbol may not be disposed of
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Maintenance
C A U T I O N
Multiple hazards. Only qualified personnel must conduct the tasks
described in this section of the document.
Maintenance schedule
shows the recommended schedule of maintenance tasks.
Facility requirements and operating conditions may increase the
frequency of some tasks.
Table 1 Maintenance schedule
Task
30 days 60 days
90 days
365 days
Clean external surfaces
(
on page 5).
X
on page 6).
X or as
needed
Replace the reagents
(
on page 7).
X
1
X
2
Replace the standards
(
on page 7).
X
3
Clean or replace the sample
(y-strainer) filter
X or as
needed
Replace the fan filter
X or as
needed
Replace the reagent air filter
X
Replace the tubing
X
Replace the stir bar
X
Replace the sample cell
X
1
With 10 minute cycles
2
With 15 minute cycles
3
With one calibration per week
4 English