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For iron removal using manganese sand, it is recommended that a washing process be completed at least once
every 7 days and that a washing phase duration of 11 minutes and a rinsing phase duration of 5 minutes be set.
FILTER STAND-BY FUNCTION
This function must be exceptional (example: period of non-use). It enables blocking of automatic washing.
WATER CONNECTION, START-UP
1)
Once the filter is loaded:
2)
Check that the manual waste outlet regulation valve is easy to manoeuvre.
3)
Slowly open the untreated water supply valve and check for leaks.
4)
Leave the filter in this position to purge any air in the system.
5)
Once all of the air has been purged, open the untreated water supply valve all the way.
6)
Start a manual washing cycle using the control unit.
7)
Open the waste output valve until a waste flow-rate of 2 to 3 m
8)
Allow the filter to continue washing until the water runs clear.
9)
Adjust the washing flow-rate using the waste outlet valve as required by the filter medium (see the
table in the chapter on "filter medium").
10)
Ensure that the water is always clear during normal operation.
11)
Interrupt the cleaning process by pressing and holding the "OK" button. The filter is now in operation.
12)
Carry out a water withdrawal test at normal usage flow-rates.
13)
Note the pressure drop of the clean filter during operation by reading the pressure gauge.
SPECIFICS RELATING TO IRON REMOVAL USING MANGANESE SAND
It is recommended that the filter valve be assembled without the upper strainer since the new filter media
contains fine, adhesive particles. In this case, it is necessary to be careful when adjusting the washing cycle
to ensure that there is no filter media in the washing water.
Carry out a filter wash whenever necessary.
As general rule, washing is considered necessary when the filter pressure loss reaches 0.2 to 0.5 bar more
than the clean filter pressure loss. It should be noted that a filter that is slightly clogged is more effective than
a clean filter. It is therefore not desirable to wash a filter more often than necessary. Once a year, open the
filter and inspect the upper part of the filtering layer.
COMMISSIONING
OPERATION
BWT PURITY PRO XL Technical Manual - code 125502287 - Rev 1 - 27/09/2021
3
/h is achieved.
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