Switch‐Tek Sump Float Level Switches LV41 & LV42 Series Manual LV41 Series Shown LV42 Series Shown Flowline, Inc. 10500 Humbolt Street Los Alamitos, CA 90720 Tel: (562) 598‐3015 Fax: (562) 431‐8507 www.flowline.
INTRODUCTION / TABLE OF CONTENTS Step One The LV41 Series Sump Float is a mercury‐free mechanically actuated floating switch intended to activate electrical components, usually pumps, to start and stop automatically. The LV41 series is perfect for simple level control of liquids for filling or draining reservoirs and tanks. Float switches such as the LV41 series are the most universally used for pump automation, due to their high reliability, economical pricing, and easy installation.
SPECIFICATIONS Service: Wetted Materials: Temperature Limits: Pressure Limits: Enclosure Rating: Switch Type: Electrical Rating: Mounting Orientation: Shipping Weight (housing): Shipping Weight (cable): Agency Approvals: Step Two LV41: Compatible liquids. LV42: Compatible Liquids, slurries Housing: Polypropylene Cable: PVC LV41: 32 to 122°F (0 to 50°C) LV42: ‐4 to 176°F (‐20 to 80°C) LV41: 14.
DIMENSIONS Step Three LV41 Series Top View LV41 Series Side View LV42 Series Top View LV42 Series Side View 4 of 10 MN301200 Rev A
SAFETY PRECAUTIONS Step Four About this Manual: PLEASE READ THE ENTIRE QUICK START PRIOR TO INSTALLING OR USING THIS PRODUCT. This manual includes information on the Switch‐Tek LV41 and LV42 series sump floats from FLOWLINE. Please refer to the part number located on the switch label to verify the exact model configuration, which you have purchased. User’s Responsibility for Safety: FLOWLINE manufactures a broad range of level sensing technologies.
COMPONENTS Step Five Switch‐Tek sump floats are available in two different configurations with options for different lengths of cable. Depending on the model purchased, you may or may not have been shipped all the components shown below.
INSTALLATION Step Five The basic operating principle of the sump float is very simple. As fluid level rises the float will also rise, resulting in a tilt of the micro‐switch located inside the housing. This tilt will generate a signal that can be used to actuate a motor or signal an indicator alarm. To ensure the proper function of the sump float, it is necessary to secure the electric cable inside the tank or well.
WIRING Step Five ELECTRICAL CONNECTIONS: The LV41 and LV42 series feature a SPDT relay contact. 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, which is a three‐conductor cable, has one lead that is common, one that is normally open (NO), and the other that is normally closed (NC).
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.
WARRANTY, RETURNS AND LIMITAITONS Step Seven For complete product documentation, video training, and technical support, go to www.flowline.com. For phone support, call 562‐598‐3015 from 8am to 5pm PST, Mon ‐ Fri. (Please make sure you have the Part and Serial number available.
