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F-1031, Section 2115
Maintenance
Corrosion Protection
Optional Zinc Intake Screens
Once per month check to make sure the intake screens are
not clogged or damaged. Also check for corrosion, and
replace screens if damage is severe. For the zinc screen to
adequately control corrosion, there must be a strong elec‐
trical contact between the screen and the fitting. Remove
any corrosion, debris or paint from the counter bore that will
insulate the screen from the intake fitting. If the screen does
not fit tightly, adjust the gap of the slot on the outside dia‐
meter of the screen to ensure a tight fit.
NOTE: These screens are die- cast which results in a
slight taper from one side to the other. Install the
screen with the thinner cross- section facing out to
minimize flow restriction.
Zinc Intake Screen
Optional Zinc Anodes
Twice per year, remove the anodes and check for erosion of
the zinc elements. Replace the zinc elements if more than
half of either of the zinc elements has eroded. Anodes are
normally mounted on the pump intake piping, but they may
also be installed in the discharge piping if no intake mount‐
ing locations were available. Physical mounting of the anode
may be via an NPT tap or bolt- on flange as described
below.
NOTE: The zinc must make contact with water to be
effective. Do not paint or use any other coating on the
zinc elements.
Bolt- on Anodes
Unscrew the (4) hex head screws from the pump. If zinc
elements require replacement, unscrew the hex head cap
screw.
NOTE: There is no need to remove the threaded anode
adapter from the anode flange for zinc element
replacement. The screw was installed using thread
sealant so higher force than normal may be necessary
to remove.
Replace one or both elements as necessary. Install the
hex head screw using Loctite 242 (blue) on the screw
threads. Mount the anode assembly back on the fitting.
Bolt-on Anodes
Threaded Anodes
NOTE: The 2- 1/2 in. hex is threaded into a bushing that
should remain on the pump. Be sure to restrain the
bushing when removing the 2- 1/2 in. hex.
Unscrew the 2- 1/2 in. hex from the pump. If the zinc ele‐
ments require replacement, unscrew the hex head cap
screw.
NOTE:
The screw was installed using thread sealant so
higher force than normal may be necessary to remove.
Replace one or both elements as necessary. Install the hex
head screw using Loctite 242 (blue) on the screw threads.
Remove any paint or corrosion from the face around the
NPT tap on the pump. Apply thread sealant to the threads
and screw the 2- 1/2 in. hex into the pipe tap until tight.
Threaded Anodes
