8
Switch off the system, fresh water flush
1) Open the pressure control valve until the plant runs without pressure.
2) Run the Aquatec several minutes to remove the concentrated salt from the
membranes.
3) Turn three-way valve (no. 2) to position test-outlet.
4) Switch off the high-pressure pump first and then the feed pump.
5) Close the seawater intake valve.
6) Open valve (no. 3). The fresh water pressure pump of the boat should turn on now
flush the system with chlorine-free fresh water. At least 8-10 liters of fresh water is
required per membrane A charcoal filter removes any existing chlorine which
destroys the membrane.
7) Close flush valve (no. 3).
Hint:
The time needed for the fresh water rinse depends on the board-side performance
of the fresh water pump and the condition of the membranes and therefore cannot
be stated on the factory side.
Please find out the required amount of flushing water by discharging the rinsing
water into a bucket once after a normal operation (take off the hose at the thru-hull
fitting) and check the salinity constantly by tasting. During the process, stop the
time to find out the time requirement of future flushes. By collecting it in a bucket,
you also find out the needed amount of flushing water.
Hint
:
A run with the LP and HP pump accelerates the flushing process. Also, the
onboard fresh water pump must provide sufficient flow
Attention:
A fresh water flushing of the Aquatec is recommended after each operation. It
reduced biological growth in the membrane and preserves the life span and the
reliability of the entire system.
After each operation, the Aquatec should be rinsed with fresh water. After fresh water
flushing, the system may remain unused for 7-14 days. This process can be repeated
as long as you like.
Note:
Prior to a longer period of shutdown (without flushing), the Aquatec has to be
preserved with the chemical no. 3 (Biocide). For instructions, see “Long term
preservation (mothballing) of the plant”.
