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Optional Intake Screens
Once per month check to make sure the intake screens are
not clogged or damaged. Also check for corrosion, and re-
place screens if damage is severe. For the screen to ad-
equately control corrosion, there must be a strong electrical
contact between the screen and the fitting. Remove any cor-
rosion, 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 diameter 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.
Figure 5. Intake Screens
Optional Anodes
Twice per year, remove the anodes and check for erosion of
the replaceable elements. Replace the elements if more than
half of either of the 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 mounting
locations were available. Physical mounting of the anode
may be via an NPT tap or bolt-on flange as described below.
NOTE: The replaceable elements must make contact
with water to be effective. Do not paint or use any other
coating on the replaceable elements.
Bolt-on Anodes
Unscrew the (4) hex head screws from the pump. If ele-
ments require replacement, unscrew the hex head cap
screw.
NOTE: There is no need to remove the threaded anode
adapter from the anode flange for element replace-
ment. 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.
F-1031, Section 2109.1
Maintenance
Corrosion Protection
Figure 6. 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 elements
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.
Figure 7. Threaded Anodes
Page 10 of 13
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