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The KARI Float Switch is mounted
to hang from its own cable. The oat
switch oats on the surface of the liquid
and follows the movement of the liquid’s
surface. Functions are controlled in
the various tilt angles of the oat. The
switching distance differential is adjusted
by moving the weight along the cable.
Cable
length
(m)
Installation considerations
•The height at which the oat hangs
and the distance of the cable weight
from the oat can be adjusted. The
differential between the start and stop
levels is at its lowest when the cable
weight is about 10 cm from the tip of
the oat’s strain-relief (see page 7).
•If the viscosity of the liquid is high
or oating to the sides needs to be
restricted, we recommend a heavier
weight of cable, which we supply as
required. The weights are xed to the
cable with a clamp wedge (see Image 1).
•It is important to keep the junction
box in a dry environment. If this is not
possible, the ends of oat switch cables
must be covered with, for example,
protective grease (see Images 2 and 3).
An IP68 junction box is also available.
•The oat switch needs a cable weight
or other anchor point to operate.
•The installation site must be selected
such that the oat cannot become
caught under or stay on top of any
surface or get entangled in other
structures (see Image 4).
•When the oat switch is tested without
being oated, its correct orientation
must be considered: the ‘UP’ mark on
the side of the bottom portion must
face upward. For example, when placed
on the oor on its side, the oat switch
settles into this position because of its
internal keel weight (see Image 5).
•Tying the oat switch from its cable
near the oat to, for example, the
ascension pipe of the pump decreases
the useful life of the cable; the oat
switch should hang freely from its cable
(as shown in Image 6).
Image 1. Cable weights and the hanging loop are
xed to the cable with a clamp wedge (A–B).
Image 2.Avoid extending or
connecting the cable in humid
conditions.
Image 3.
Image 4.Take care to ensure
the free movement of the
oat.
Image 6. Avoid xing the oat such that
a sharp corner can cause kinks or wear to the cable.
Image 5. Note the correct
orientation of the oat.
A) B)
INSTALLATION AND
ADJUSTMENT
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