Spectra Watermakers LB-1800C, Installation And Operating Manual

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Product Water tubing
The Product Water Outlet is a 3/4” hose barb x 3/4” female pipe thread fitting. Route the prod-
uct water tube from the product water outlet fitting on the front of the unit into the top of the stor-
age tank. Ideally the product water should fall into the tank so there is no back pressure on the
product line. Install a tee in the water tank fill or tap a pipe thread into an inspection port in the
top of the tank. Do not feed the water into a manifold or bottom of the tank. Make sure there is
no restriction in this plumbing. The top of the water tank must be no more than 10 feet (3M)
above the top of the watermaker frame.
The limit on the system pumping product water is the back pressure created on the mem-
brane when the system shuts down. If you need the unit to pump water over 10 ft. install
a good quality check valve (with low cracking pressure) in the product line as this will
eliminate back pressure on the membrane (from the product) when the system shuts
down. Pressurized product water running back into the system can cause membrane
failure.
A product sampling tap can be installed along the tank fill hose between the outlet and the tank
connection. If a 3 - way valve is used as sampling tap or filling manifold is to be installed on the
product water line, then an “ open - before - close ” type 3 way valve should be used to ensure that
the product water line is never accidentally pressurized.
It is not recommended to use the watermaker as a product water delivery pump. If the product
water must be delivered up hill or to a tank more than 50 feet/15M away, run it to a transfer tank
and use a separate pump to move water to the desired location.
Feed Water flow gauge
Product water flow gauge
Feed pressure (after filters)
Product out to Fresh Water Tank
Membrane pressure
Feed water valve (run or service)
Feed water inlet
Brine discharge
INSTALLATION
The LB series watermakers must be protected from direct sun and weather. UV from
the sun will degrade the hoses, tubes and fittings used in the system. It is recommend-
ed that the unit be under a roof in a permeant enclosure with good ventilation and drain-
age.