Hach-Lange NITRATAX sc - Manual (Page 25)

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Section 6 Maintenance
Proper maintenance of the measuring windows in the sensor is critical for accurate
measurements. The measuring windows should be checked monthly for soiling and the
wiper profile checked for wear.
6.1 Maintenance schedule
C A U T I O N
Pinch Hazard. Only qualified personnel should conduct the tasks described in this section of the
manual.
N O T I C E
The seals must be replaced by the manufacturer’s Service Department. For more information,
see the instruction sheet of the flow-through accessories for NITRATAX sc.
Maintenance Task weekly 6 months Annually as per counter
Visual inspection X
Check calibration
X
(depending on the
ambient conditions)
Inspection X (counter)
Seal change X (counter)
Wiper profile change X
Wearing parts
Quantity Description Average service life 1
1 Under normal operating conditions using factory settings.
1 Wiper sets 1 year
1 Wiper motor 5 years
1 Seal set 1 year
1 Light bulb 10 years
2 Measuring window 5 years
1 Filter set 5 years
2 O-ring flow unit 1 year