It is necessary to read the pressure on the manometer
located on the equipment front panel in order to
perform this verification.
The working pressure depends on many factors such
as water temperature, salinity level of seawater,
effective batteries voltage, membranes cleaning
degree, typology of installation.
The pressure, in normal working conditions with both
pumps activated, is approx. 6 -7 Bars.
When working with only one pump activated,
operating pressure drops at around 5 bar.
There is a small pressure lost head, in the range of
0,2 bar, during the cycle.
If the average pressure exceeds the above ranges it is necessary to check the membranes cleaning degree.
It is necessary to perform the shutdown procedure if the membranes result dirty. If cleaning also results
insufficient it could be necessary to perform an alkaline washing using the chemical product SCHENKER
CLEANING 2 (SC2). It is recommended to contact a Schenker certified service center.
6.3 Check for absence of leaks
It is necessary to perform this verification at every plant start-up and however often, since possible leaks due
to accidental causes (pipe bursting, hose clamp loosening, equipment failure, etc.) may occur, even plentiful,
with the consequence of possible damages.
6.4 Check for membranes replacement
The reverse osmosis membranes have a 7 years average working life. It is recommended therefore, after 5
years of operation, to verify the possible necessity of substitution and however to perform the substitution after
7 years.
6.5 Shutdown procedure
It is necessary to perform the shutdown procedure before standstills longer than 3 months, for instance before
the winter laying up.
The purpose of the shutdown is to flush the system from possible organic and inorganic sediments, and inhibit
the growth of bacteria that could reduce the reverse osmosis membranes efficiency.
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