30
Replacement of membrane
Attention !!!
The membrane is preserved with a chemical. During unpacking and inserting, please
wear protective gloves for your own safety. On contact with the preservative liquid,
the affected skin areas have to be rinsed thoroughly with water.
Important
:
To avoid that the new membrane dries out, it may only be removed from the plastic
packaging just before commissioning the plant. The
manufacturer's label
on the
membrane
must not be removed
.
Before
installing
a
new
membrane,
the
accompanying rubber V-cup seal must be mounted
on the side of the planned sea water entry.
(Depending on the manufacturer, the ring could
already be mounted.)
In doing so, the open side of the V-ring must point
toward the sea water entry side.
For easy installation, all sealing rings and membrane
connectors should be greased with a light coating of
glycerine or Vaseline.
Demounting the membrane:
For demounting the membranes, screw off the M6x20 screws each at both ends at
the AQUATEC pressure vessel. (Screw tightening torque for the holding clips 3 Nm).
Then take off the stainless steel holding clamps. Thereafter, pull the end caps out of
the pressure pipe with a slight pull at the stainless steel-fittings of the pressure hoses
and slightly sidewise movements.
The membrane has to be shoved out of the pressure pipe in flow direction of sea
water, because the dihedral rubber V-ring of the membrane prevents lateral
movements against the flow direction.
According to this, during assembly, the membrane has to be shoved into the
pressure pipe in flow direction. When mounted, necessarily watch the O-rings to
avoid damage. Before installation of the membranes, first fit the end cap on the side
of the concentrate in order to thereupon shove the membrane against this cap.
Note
:
The product water connection can be located on any side of the pressure tube and is
independent of the flow direction seawater.
sea water
product water
concentrate
(brine)
Rubber V- cup seal,
the open side must point toward the sea water entry side
.