Spectra Watermakers LB-1800C, Installation And Operating Manual

Page: 8 / 53

8
Feed Water Inlet
Feed water must be supplied to the feed water in-
let at a minimum pressure of 20psi (1.3bar) and a
Minimum Available Flow Rate of 6.5gpm
(24.5lpm). Silt density must be less than 3 SDI.
If the water supply has a lot of silt in it a settling
tank and or media filters are recommended.
Brine Discharge
Feed Water Inlet
Note that the brine discharge must go to
an open drain with an air gap so there
is no suction possible.
Route the Brine discharge from the cam lock fitting
back to the feed water source, or to another eco-
logically acceptable location. The brine flow will
be roughly 4.5gpm (17 pm) and will be saltier than
the feed water.
Inlet valve
The system requires a regulated inlet pressure of
20 to 30 psi on the Boost Pressure gauge. It is
recommended that the feed pressure be set as
high as possible with new filters and the pump not
knocking.
Optional Pressure Regulator
The picture at right shows the feed water solenoid
valve and the optional pressure regulator assem-
bly.
Note; If there is no water flowing the pressure reg-
ulator may be set too high so unscrew the adjuster
all the way and then adjust the feed pressure as
water is flowing. Adjust the pressure regulator
with a 3/8” Allan wrench so the boost pressure
shown on regulator gauge is 20 to 30 psi.
INSTALLATION