13
SYSTEM SHUT DOWN PROCEDURE
1)
Switch the diverter valve to sample station.
2)
Open the pressure control valve all the way counter-clockwise.
3)
Switch off the electric motor and the boost pump (if installed).
4)
Close the seawater intake valve.
FRESH WATER FLUSH PROCEDURE
The fresh water flush exchanges the seawater in the membrane element/s with fresh water und should be
performed after each use of the watermaker. Skipping the flush does not save water as the product on next
operation must be dumped longer to clear the membrane element. The simple flushing procedure avoids
biological growth due to the dying microorganisms contained in seawater and dissolves mineral build up
that may clog the membrane element/s. Repeated every 14 days, the fresh water flush also avoids the need
for chemical preservation, otherwise to be performed for long-term storage.
CAUTION: The boats fresh water pressure should not exceed the range of the low pressure gauge.
1)
Open the pressure control valve all the way (two full rounds after the spring releases) counter
clockwise.
2)
Close the sea water intake valve or switch the cleaning/storage valve to the closed position.
3)
Open the fresh water flush valve.
Your boats’ fresh water supply pump should now turn on (larger fresh water pumps will cycle on and off).
Allow fresh water to flow until all salt water is flushed out of the RO System. For the next flush procedure,
test how long it takes until the brine at the outlet becomes fresh.
PRE-FILTER BACKWASH PROCEDURE
As part of a long term storage, you may remove the pre-filter cartridges from the housings or perform a
pre-filter backwash procedure. If there is no momentary shortage of fresh water, the back wash may also
be useful to reduce product water discharge time until the product is free of odor after each start up.
1)
Open the seacock and switch the cleaning/storage valve to the sea water position.
2)
Allow fresh water to flow until all salt water is flushed out of the pre-filter(s), boost pump and the
sea strainer (approximately 30 seconds, depending on the flow rate of your vessel’s fresh water
pump).
3)
Close the seacock.
MEMBRANE
STORAGE
PROCEDURE
If you intend to store your watermaker for more than ten days, growth of micro-organism may degrade the
RO membrane(s) performance and the RO membrane(s) should be flushed with a biocide solution. This will
preserve the membrane for long-term storage of up to ten months.
If you have installed the optional fresh water flush system, it is recommended to back flush the pre-filter(s),
the boost pump and the sea strainer with fresh water (see above). Close the seawater intake valve (sea
cock) and remove the pre-filter cartridge(s).
