Features: It is used to measure the dynamic state of the liquid flowing through the pipeline, such as: water, ethylene, ethylene glycol and other liquids that have no corrosive effect on copper. When the flow rate of liquid exceeds or falls below the set flow rate, the SPDT contacts can turn on one circuit and cut off the other at the same time. The flow switch is usually used in places requiring interlocking or "cut-off" protection. Repeatability error is about 2.5%, ensure high stability of products. IP54 protection level, more safer to use. Perfect for water treatment system, central air conditioning, water cooling unit. Specification: Model: LKB-01D Material: Stainless steel, Copper, Plastic Rated voltage: 250V Rated current: 15A Repeatability error: 2.5% Regulation range: 5.2-23 L/min Switch type: SPDT Connector: RC 1" Max.working pressure: 1.0MPa Medium temperature: 0-100℃ Product dimension: 8.5*6.5*12.6cm / 3.3*2.6*5in Weight: Approx.817g/ 28.8oz Package List: 1 * Water Flow Switch 1 * User manual Installation method: 1. Open the flow switch 2. The switch has been set at minimum flow rate. Turn the adjusting screw counterclockwise to increase the flow setting value. 3. Press the target to check whether the micro switch can work normally. Excessive clockwise rotation of the adjusting screw may lead to the failure of the flow switch. 4. After the installation, please press the lever of the flow switch several times to check. If there is no "click" sound, turn the adjusting screw counterclockwise until there is "click" sound. 5. The adjustment screw of lacquer seal is only used for the first time to adjust the state of flow switch. Please do not change or adjust it. 6. Observe three operating cycles to ensure that the switch and the system to which it is connected are operating properly and cover the switch enclosure promptly. Note: 1. Please check the flow switch carefully before installation. 2. Flow switch can be installed in horizontal pipeline or vertical pipeline with upward liquid flow direction, but not in pipeline with downward liquid flow direction. When installed in the pipeline with upward liquid flow direction, the gravity effect should be considered. 3. When installing wiring, please pay attention to the following matters: (1). It is absolutely forbidden to impact the wrench on the switch base plate, which will lead to the deformation and failure of the flow switch. (2). When wiring or debugging, cut off the power supply. (3). When wiring, it is absolutely forbidden to adjust any screws other than micro switch terminals and grounding screws. And connecting the wire carefully, otherwise it is easy to make the micro switch itself position displacement, resulting in the failure of the flow switch; (4). Special grounding screws must be used for wiring, and installation screws cannot be removed.