Hach 5500sc Maintenance And Troubleshooting Manual page 5

Task
Replace the standards (Replace the
analyzer bottles on page 14)
Replace the cleaning solution
analyzer bottles on page 14)
Replace the internal filter
Clean the screen in the 40-mesh external
filter (Y-strainer)
Clean the screen of the optional 100-µm
external filter
3
Replace the fan filter
Replace the reagent air filter
3
Replace the tubing
Replace the stir bar
Replace the check valves on the
colorimeters (if applicable)
Replace the sample pump
1
With one calibration per week (default)
2
For one cleaning per 6 hours (default)
3
Refer to the documentation supplied with the replacement part.
4
Not applicable to newer instruments.
Table 1 Maintenance schedule (continued)
1 month
(Replace the
X or as needed
4
3
3 months
1
X
2
X
X or as needed
6 months 1 year
X or as needed
X or as
needed
X
X
X
X
X
English 5