© LNS FOX Instruction manual series WS (USA) pag. 19 of 28 - rev. 06-2014
o) unscrew two knobs
p) lift top
q) remove dirty filtering media
r) place upper seal ring
s) place lower seal ring
t) insert new filtering media
u) close down top
v) tight two external knobs
w) clean bottom of the unit
x) check drain slotes
y) check seal
“integrity of the unit”
Make sure that the prefilter cartridge is correctly assembled once the filtering media is replaced. An
incorrect assembly of it can result in shorter lifetime of the filter and/or problems when closing the unit.
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Verify that the surface where the prefilter will be placed is completely clean.
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Insert prefilter and tight main knob.
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Verify that the top pf the prefilter and the seal of the impeller case are both clean
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Close the unit
14 a) Insert prefilter
b) Tight main knob
c) Close the unit
“Note”
Excessive resistance while closing down the unit can be a signal of an imperfect positioning of the
prefilter or of presence of residual materials underneath. If that is the case verify the cause, take care
of the problem and close the unit.