Zinc Intake Screens are an easy method to prevent corrosion and debris getting into the pump and causing major damage.
Industry
recommendation: Once a month check the intake screens to make sure they
are not clogged or damaged. Also check for corrosion, and replace
screens if damage is serious. For the zinc screens to adequately control
corrosion there must be a strong electrical connection between the
screen and the intake fitting. Remove any corrosion that may be
insulating the screen from the intake fitting. Most screens have an
adjustable tab on the O.D. of the screen, which can be positioned to
ensure a tight fit. Zinc anodes should be checked twice a year for
corrosion. Anodes should be replaced when about half of the anode has
been sacrificed to corrosion. It is important to maintain the anodes
installed on a pump. When the zinc is gone, the metal component it was
intended to protect begins to corrode––guaranteed. Zinc screens and
anodes cannot perform their function unless they are exposed to water in
the pump. Never coat zinc screens or anodes with paint or anything
else. Of course, some corrosion of the iron will occur. The severity
depends on the water conditions and the maintenance of the anodes. Zinc
screens and anodes are optional, however it is important to include them
in your pump specifications. The cost is small compared to the cost of a
pump body and related components. Anodes can also be added to existing
pumps.
