Hach-Lange 3705 sc - Manual (Page 25)

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Section 5 Maintenance
DANGER
Only qualified personnel should conduct the tasks described in this section of the
manual.
DANGER
Explosion hazard. Do not connect or disconnect equipment unless power has been
switched off or the area is known to be non-hazardous.
5.1 Maintenance Schedule
5.2 Cleaning the Sensor
Clean the exterior of the sensor with a stream of clean water. If debris remains, use a wet
cloth or brush.
Maintenance Task 90 days
Clean the sensor 1
1 Cleaning frequency is application dependent. More or less frequent cleaning will be appropriate in some applications.
x
Inspect sensor for damage x
Calibrate Sensor (if required by regulatory agency) Per the schedule mandated by your regulatory agency.