CPR Touch XL, Control Unit
Index: 03 Date modified: 22/06/2022
OI No.: BA MR 001-03 Steuereinheit CPR Touch XL EN.docx
Page 48 of 70
7
Maintenance, care, faults
7.1
Device maintenance
We recommend that you assign a specialist firm to carry out regular maintenance. All
required maintenance and repair tasks may only be carried out by properly qualified
personnel from a specialist company. Required spare parts are available from your
specialist dealer.
Please observe the safety notices when handling chemicals and wear appropriate
protective clothing.
Tip!
In order to carry out any maintenance work, use the maintenance
protocol for the associated dosing technology.
7.1.1
Check and
clean
the prefilter
The prefilter prevents the contamination of the measuring cell; therefore, it must be kept
clean. Especially in the spring and fall, a higher level of
contamination through flying seeds and falling leaves can
occur in outdoor pools.
When working on lines that carry water, close the inlet and
outlet valves! Collect any water that runs out. Unscrew the
filter hood from the bracket. Remove the filter insert from
the filter hood and wash the filter insert under running
water. Reinstall in the reverse order.
NOTICE!
A contaminated prefilter may lead to a chlorine depletion, resulting
in faulty measuring values.
7.1.2
DPD1 Measuring – free chlorine calibration
According to the nationally applicable provisions (such as DIN, ÖNORM, Sia, …), a manual
measurement of the free chlorine must be conducted at regular intervals using the DPD1
method and the result must be documented in the operating log. For this measurement,
various photometric measuring procedures are available. If a major deviation is detected
between the display and the determined free chlorine measurement, a calibration of the
chlorine measurement must be carried out.
7.1.3
pH measurement – calibrate pH electrode
The pH electrode is a wear part. It is subject to a certain degree of ageing, which is due to
a variety of factors. In the area of swimming pool water treatment, a life span of 6 months
to 2 years may be expected.
The contamination of the electrode’s diaphragm may be one reason for measuring value
deviations. This contamination can potentially be cleaned using the electrode cleaner
Figure 7, Prefilter
