Maintenance
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Maintenance
Cleaning the detector
Remove the automatic cleaner or the lid, then clean the cell of the detector with a soft brush or
paper. If the detector is soiled, errors caused by flaking dirt become larger during zero
calibration. It is necessary to clean not only the optical path section but also the entire liquid
contact section of the detector.
If the inside of the piping is soiled with iron rust, the cell will also be soiled with rust. In this
case, clean the cell by filling it with the hydrochloric acid detergent.
Cleaning the sampling piping
Dirt is gradually deposited in the sampling piping. If deposited dirt flakes off due to vibration of
a pipe or the start and stop of a pump, etc., turbidity will increase.
Inject air into a pipe periodically to remove any dirt.
Replacing the zero calibration filter (if installed)
Provide a valve to prevent the outlet of a filter for zero turbidity from coming in contact with the
sample water. Keep the valve closed during measurement.
If the amount of filtration decreases, replace the filter with a new one.
Note
Before replacing the filter, be sure to decompress the filter housing completely.
Replacing the desiccant
The inside of the detector must be dry at all times. If the inside of the detector is in the same
condition as the external air, cold sample water cannot be measured due to condensation.
The desiccant used for the detector can be replaced with a new one. The yearly periodic
replacement of desiccants is recommended. In addition, when the case is opened, replace the
old desiccant with a new one.
The desiccant is a magnesium chloride and magnesium oxide compound. You can tell by
squeezing the desiccant bag from the outside if it is still powdered or not. If a desiccant has
absorbed moisture, it will become hard and expanded.
Turn the knob for replacing desiccant, and replace the old desiccant with a new one.
Filter
Filter housing
Desiccant
Desiccant holder
