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Maintenance
9
IMPORTANT
• Service the sensor regularly to avoid overdosing within a control
• Observe the current national regulations for maintenance intervals.
• Do not touch the electrodes or allow them to come into contact with
• Never attempt to clean the membrane with acid/alkaline solutions,
Maintenance
intervals
weekly (recommended)
Maintenance
work
38
Maintenance
system, due to incorrect measured value.
greasy substances.
cleaning reagents or mechanical aids (brushes or similar).
Check the sensor regularly for dirt, algae and air bubbles. As far as possi-
ble, avoid contamination of the membrane with solid particles, deposits etc.
Eliminate air bubbles by increasing the flow rate.
Check the sensor's reading on the controller regularly, using an appropriate
instrument for measuring bromine (e.g. DPD).
If necessary, recalibrate the sensor (see Chapter 8.2 "Calibration").
If calibration cannot be carried out properly, the membrane cap must be
replaced and calibration must be repeated (see Chapter 6 "Assembly",
8.1 "Run-in time" and 8.2 "Calibration").
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