PRO COMPACT & CAD D300 v2.4
Page 22
3) Sterilizing the membranes
When should the membranes be sterilized?
Under normal circumstances, a monthly and regular rinsing of the membranes is enough for
their maintenance. If you do no use the watermaker for a while and cannot perform a monthly
rinsing, membrane sterilization is necessary. The protective effect of sterilizing does not
exceed 6 months. The sterilization should never be renewed more than twice a year but
should include, between these two operations, a mandatory rinse with fresh water.
An excessive concentration of sterilizing solution can corrode the membrane heads.
We recommend the sterilizing cartridge ST2 and our specified dose of sterilizing
solution, adapted to your system. Failure to comply with these recommendations or
use of another sterilizing solution void the warranty.
Membranes sterilizing procedure
1. Easy method
using
the ST2 sterilization cartridge (reusable):
We have developed a sterilization cartridge that greatly facilitates handling. The
instructions for this cartridge are given in
Appendix 4
.
2. Manual method
without
the ST2 sterilization cartridge:
With the watermaker turned off, thoroughly rinse it for 10 minutes with fresh water
using the 3-way valve on the prefilter. Pour the sterilizing product (whole bag) into a
bucket containing 8 litres of water. Uncouple the seawater inlet pipe and immerse it in
the bucket. Start the watermaker without increasing the pressure until the bucket is
empty. Once the bucket is empty and the operation completed, reconnect the pipe.
3. Method using a garden sprayer:
Pour the sterilizing product (whole bag) into a bucket containing 8 litres of fresh water
and mix everything together. Fill the garden sprayer with this mixture and increase the
pressure to 3 or 4 bar. Then inject the sterilizing solution at the inlet of the membranes
(red mark side).
