Hach-Lange FP 360 sc Basic User Manual - Manual (Page 16)

English 16
Maintenance
The inside of the sensor is maintenance-free.
The cleanliness of the measurement window in the sensor head has an
impact on the accuracy of measurements. Check the measurement
window at regular intervals to make sure it is clean. The required
frequency of these checks is dependent on the measuring medium. Also
do a check in the event of unusually high measurement values and
clean the measurement window if necessary (refer to
Cleaning the
measurement windows ).
For sensors with a cleaning unit, adjust the frequency of cleaning to the
measurement conditions. The inspection interval must be shortened to
reflect any increase in solid matter.
Maintenance schedule
Contact the manufacturer's service department every 2 years to arrange
sensor inspection, testing, calibration and seal replacement. The flash
bulb is also replaced every 4 years.
Cleaning the measurement windows
1. Rinse the sensor with fresh water until all attached solid matter has
been removed.
2. Use pure acetone and a soft, clean cloth (e.g. camera lens cleaning
paper) to carefully remove the deposits on the measurement
window. Avoid sharp objects on the measurement window surface.
3. Rinse the residue from the cleaning agent with fresh water.
N O T I C E
Individual components of the suspension device (shackle and
chain of the chain mount kit) are made of stainless steel and may
corrode.
Interval Maintenance task 1
1 When operated according to factory settings and appropriate use
Visual inspection Application-dependent
Check for contamination
and corrosion.
System inspection Every 2 years
Check plugs and flash
bulb.
Calibration check Every 2 years Check calibration
C A U T I O N
Cleaning agents can be hazardous to health.
Wear protective equipment and avoid direct contact with cleaning
fluids.
N O T I C E
Other cleaning agents can damage the material. Damage caused
by cleaning carried out incorrectly is not covered by the warranty.