page 26
PAUL
®
station
manual
PAUL Station Manual 2019-08-02
6.4 Undefined frequency
6.4.1 Cleaning the RWT
As mentioned before, raw water will contain settleable solids. Thus, the RWT
should be inspected from time to time and cleaned by flushing via the bottom
outlet.
6.4.2 Cleaning the membrane module
Although usually
PAUL
®
should not be opened and the membrane module does
not need special care or attendance, in special situations it might be favourable
to also clean the membrane module from time to time.
This can be done with a chlorine solution of ca. 5 ppm
available
chlorine (ppm =
mg/L) as mentioned in chapter 6.3.1. Prepare the solution by filling
PAUL
®
,
closing the inlet to
PAUL
®
and add sufficient chlorine (volume of
PAUL
®
is ca.
100 Liter, so for
5 mg/L
you need
0.5 g available chlorine
).
Then let the solution soak for 30 min to 1 hour and then filter it into the FWT,
and with the solution that now is in the FWT, you can also clean the FWT, thus
combining the cleaning of both units.
