FlowLine Switch-Tek LV42 Series Specifications-Installation And Operating Instructions

The LV42 Series Large Float Level Switch is a mercury-free self counterweighted
floating switch designed for the automation of pumps, specifically filling and draining
of tanks, wells, and reservoirs. The LV42 Series body is free of any irregularities
making it ideal for use in sewage water applications. The polypropylene body
consists of a double airtight chamber with high-pressure melted polypropylene re-
injection sealing to ensure a perfect seal against infiltration. Cable hangers are
available to suit a variety of mounting applications. Featuring CE approval, high
temperature durability, oil resistance, and drinking water suitability.
INSTALLATION
The basic operating principle of the LV42 Series is very simple. As fluid level rises
the micro-switch located inside the LV42 Series is counter-balanced in such a way
that it generates a flipping action in the position of the switch. When fluid level
decreases the float starts in an inverted state then positions correctly. This change
in position generates a signal that can be used to actuate a motor or signal an
indicator alarm. To ensure the proper function of the LV42 Series, it is necessary to
secure the electric cable inside the tank or well as illustrated in Figure 1. The length
of the cable measured between the fixture point and the body of the LV42 Series
should be a minimum of 6 in (15 cm). It is essential to ensure that there are no
obstructions in the LV42 Series operational area before operation. During
operation, adjustments to the LV42 Series cable must not be made under any
circumstances, due to the fact that any unwanted cable connections made while
the LV42 Series is immersed in water can lead to electric shock.
There is a hanging bracket accessory option available (LV49-9000), for wire
arrangement. The bracket allows the cable of the LV42 Series to be held in place
at the top of the tank.
Note: The LV42 Series is self counterweighted and can be used without the need
of additional counterweight, clamp, or bracket. The previous are means to simplify
installation and aid in organizing the use of multiple float switches.
ELECTRICAL CONNECTIONS
SPDT, single pole double throw allows for operation of both increasing and
decreasing level, depending on the connections made between the terminals of the
micro-switch and the cable. SPDT, a three-conductor cable (without ground
option), has one lead that is common, one that is normally open (NO), and the
other that is normally closed (NC), for the proper connections of these conductors
please refer to the wiring diagrams in Figures 2 and 3.
Flowline, inc.
10500 Humbolt St. • loS AlAmitoS, cA 90720
Switch-Tek LV42 Series Large Float Switch
Specifications - Installation and Operating Instructions
Phone: 562/598-3015
Fax: 562/431-8507
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SPECIFICATIONS
Service: Compatible liquids, slurries.
Wetted Materials:
Housing: Polypropylene;
Cable: PVC.
Operating Temperature: -4 to 122°F (-20 to 50°C).
Pressure Limits: 29 psi (2 bar).
Enclosure Rating: IP68.
Switch Type: SPDT.
Electrical Rating: 10 (3) A @ 250 VAC.
Mounting Orientation: Vertical.
Shipping Weight:
Housing: 2.4 lb (1100 g);
Cable: 0.77 oz (21.27 g) per foot.
Agency Approval: CE.
NOTICE When making the connections described above, ensure that the
maximum motor power does not exceed the values indicated on
the level switch. The power supply cable is an important part of the LV42 Series.
Should the cable appear to be damaged, discontinue use immediately and proceed
to replace the unit. The yellow/green wire found on some units is the ground wire
and must be connected to a suitable ground terminal with the dimension greater
than 1mm The terminal used must also be protected against accidental break.
2 .
Figure 1: Installation
www.flowline.com
e-mail: levelsolutions@flowline.com
LV42 Series Quick Start
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Bracket
LV49-9000
QS300210 Rev A