Description: This is a manually adjustable metering pump. The pump's operating frequency can be adjusted manually. It features power-off reset or power-off hold functionality. Features: * Digital display of operating frequency; panel number indicates pump cycles per minute. * Diaphragm made of pure solid PTFE material, compatible with most chemicals, eliminating the need for regular diaphragm replacement and ensuring extended service life. Name: Electromagnetic Diaphragm Metering Pump Control Method: Manual Control Suction Range: 2m Power Supply: 110V-220V 50Hz Pump Head Material: PP Usage Instructions: This is a basic manual metering pump. 1. Adjust the chemical ratio in the metering tank, then connect the metering pump (ensure connection distance is within 2 meters). 2. Connect the metering pump to power. After powering on, adjust the desired flow rate on the pump panel. 3. Once adjusted, the metering pump will operate according to your set value and timing. 4. The metering pump draws material from the metering tank and delivers it to the injection point. (It operates continuously after powering on. To stop operation, turn off the power to reset.) Note: Ensure water remains in the metering tank during operation. Failure to do so may cause the metering pump circuit board to burn out.