3
– PRODUCT PRESENTATION
COD.150Z230.B.2021
EN
THE PRESENT MANUAL BELONGS TO -
Schenker Italia
- ALL RIGHTS RESERVED
15
The watermaker group is composed of the following parts:
•
Reverse osmosis membranes
•
Energy Recovery System
•
Manometer
•
Depressurization valve
•
Positioner
•
Reset valve
Reverse osmosis membranes.
They are installed inside the carbon fibre high-pressure housing. Membranes
are n.2 x SW4021 type. Their purpose is to separate the intake high-pressure seawater in two flows: one for
the salt-water drain and one for the fresh water production.
Energy Recovery System.
The heart of the system. It has the function of amplifying the pressure supplied by
the pumps and to recoup the hydraulic energy back from the membranes. The ERS device makes periodic
cycling by a hydraulically controlled automatic valve. The cycles are noticeable through a
”beat” issued by the
watermaker unit. The unit is based on cylinders and a central body containing the hydraulic valve necessary
for the system to function.
Manometer.
Located on the right side of the watermaker, it measures the working pressure of the watermaker.
Depressurization valve.
It is used for the air bleeding of the unit. It is located on the top of the watermaker.
Its function is to depressurize the system and to allow the bleeding of air. The valve must be closed during
normal working conditions (completely screwed in) and it is opened during the air bleeding operations (slightly
unscrewed).
Positioner.
It is a stainless steel threaded arm, with a black knob, located on the right hand side of the
watermaker. Its function is to reset the unit in case of hydraulic block.
Reset valve.
It is installed on top of the ERS it is recognizable by the little blue lever. The valve must be closed
during normal functioning (lever perpendicular to the valve). This valve has the function of allowing the resetting
of the ERS in case of a system block. It must be opened before screwing in the valve positioner.
