Hach-Lange UVAS sc - Manual (Page 27)

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Section 5 Maintenance
The cleanliness of the two measuring windows in the sensor measuring path is
crucial for correct measured results!
The measuring windows should be checked weekly for soiling and the wiper
profile checked for wear.
5.1 Maintenance schedule
* On operation as per factory settings and correct use
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 annually by the manufacturer's customer service! If the
seals are not changed regularly, water may enter the probe head and seriously damage
the instrument!
Maintenance task
Visual inspection weekly
Check calibration
Comparative measurement weekly
(depending on the ambient conditions)
Inspection six months (counter)
Seal change annually (counter)
Wiper profile change as per counter
Consumables
Number Designation Average service life*
1 Wiper sets 1 year
1 Wiper motor 5 years
1 Seal set 1 year
1 Flash lamp 10 years
2 Measuring windows 5 years
1 Filter set 5 years
2 O-ring through-flow unit 1 year