Chapter IV Page 1
IV.1. Changing the filters.
When changing the filter cartridge make sure the sea cock valve is closed, before
unscrewing the bowl filter that enables to remove the old cartridge and replace it with a
new one which has the same specifications: 9 ¾ long, 5 micron calibrated filter. We do
not recommend another type of cartridge; it could let unwanted particles entering the
system.
Once replaced, screw the bowl filter back on and re-open the sea cock valve.
To replace the active carbon cartridge, disconnect the pressurized fresh water system in
the boat, open a tab to not leave any residual pressure in the circuit, and replace the active
carbon cartridge. Connect the boat pressurized fresh water system again.
IV.2. Membrane Replacement.
Follow these instructions to change the membrane, see diagram (Chapter IV Page 3)
•
Before handling the unit, make sure there is no pressure in the circuit. If the
pressure gauge indicates there is some, wait until it disappears.
•
Dismantle the high pressure connectors, taking care not to loosen the fittings of
the end caps (3) located on the vessels (1).
•
Disconnect the fresh water outlet tube.
•
Separate the membranes set from the frame by removing its screws for a better
handling.
•
Remove the steel connector set (5) between the two caps (3) and release the blue
polyamide Ø8mm tube (6).
•
Separate the flanges of the brackets (4) and remove the vessels.
•
Remove the end caps (3) to get access to the membranes (2), unscrewing them
with the help of a special pivot wrench.
•
Once the membranes have been removed, clean the inside of the vessels with
chlorine-free water. This dirt will be removed, and the water will act as a lubricant
helping the insertion of the new membrane.
•
Take the new membrane out of its packaging (the packaging is usually an airtight
plastic bag).
•
Check that the membrane seal have no malfunctions, damages or a excessive lack
between it and the membrane. It must be placed with its lips against the water
flow direction (see drawing). Lubricate the seal with water before being placed in
the vessel. This lip seal is located at the end of the membrane by the brine outlet
(OUTLET), there is no seal on the other end.
