Ecosoft ROBUST 1000 Installer And User Manual page 5

INSTALLER AND USER GUIDE FOR REVERSE OSMOSIS SYSTEM ECOSOFT ROBUST 1000, ROBUST 3000
ROBUST 3000
Inlet pressure
gauge
Low-pressure
switch
Water inlet
connection
Sediment
pre-filter
Technological scheme of RObust 3000 is shown in Figure 2. After the pre-filters, the pressure
booster pump feeds the water to the reverse osmosis membrane array. Permeate from both
modules goes to the permeate collector, and the concentrate from the 1
one. Second stage permeate goes to the permeate collector, and concentrate is discarded to drain
via concentrate flow restrictor and drain port in port rack. Pressure gauge no. 2 shows pressure
between two membranes. Permeate goes to the purified water line or pressure tank (if installed),
passing through the carbon post-filter. Purified water line may go to the purified water faucet (not
included) or be connected with some other consumer appliance. High-pressure switch installed
before the post-filter reads pressure in permeate line and starts the reverse osmosis system when it
drops (due to taking of some water from the pressure tank or opening purified water faucet). When
the system switches on, entry solenoid valve is opened and booster pump is powered up, which
allows to feed water into the system. When purified water stops being drawn from the system,
pressure starts to build up and closes high-pressure switch switching off the system.
RObust 3000 system has low feed water pressure protection implemented with a low-pressure
switch, which prevents the pump and solenoid from operating if feed pressure is less than
0.4 bar (5.8 psi). Two pressure gauges on the front panel show operating pressure in the system,
which allows diagnosing potential and occurring problems.
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Inlet solenoid valve
Tank
connection
Permeate outlet
Operating
pressure
Membrane
gauge
module
Booster
pump
Figure 3
Flow restrictor
Drain outlet
Carbon
High-pressure
post-filter
switch
module goes to the 2
st
32
nd