Rev
A
MN301200
9
of
10
MAINTENANCE
Step
Six
Maintenance
should
consist
of
inspection
to
see
that
the
sump
float
is
free
to
move
and
not
coated
with
any
substance,
which
would
change
its
weight
or
volume
significantly.
If
this
occurs,
the
sump
float
should
be
cleaned.
This
is
easily
accomplished
without
disturbing
the
installation.
Dents
or
nicks
on
the
float
are
usually
of
no
consequence
to
operation.
Cleaning
procedure:
1.
Power:
Make
sure
that
all
power
to
the
sump
float,
controller
and/or
power
supply
is
completely
disconnected.
2.
Float
removal:
If
necessary,
make
sure
that
the
tank
is
drained
well
below
the
float
prior
to
removal.
Carefully,
remove
the
float
from
the
installation.
3.
Cleaning
the
float:
Using
a
soft
bristle
brush
and
mild
detergent,
carefully
wash
the
switch.
Do
not
use
harsh
abrasives
such
as
steel
wool
or
sandpaper,
which
might
damage
the
surface
of
the
sensor.
Do
not
use
incompatible
solvents,
which
may
damage
the
sensor's
PP
body
or
PVC
cable.
Take
particular
care
to
remove
any
scaling
from
the
float
body
and
make
sure
that
it
is
free
to
move.
4.
Float
installation:
Follow
the
appropriate
steps
of
installation
as
outlined
in
the
Installation
section
of
this
manual.
