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Operation and maintenance of fluoroplastic magnetic pumps: (1) Magnetic pumps should be installed horizontally; they should not be placed vertically. The plastic pump body must not bear the weight of the pipelines. In cases where vertical installation is required, the motor must face upwards. (II) When the liquid level at the suction point is above the pump’s axis, it is sufficient to open the valve on the suction pipeline before starting the pump. If the liquid level is below the pump’s axis, a bottom valve must be installed on the pipeline. (III) The pump should be inspected before use; the motor blades must rotate smoothly, without any jamming or abnormal noises, and all fasteners must be tightened properly. (IV) Check whether the rotation direction of the motor matches the orientation mark of the magnetic pump. (5) After starting the motor, slowly open the discharge valve; once the pump is in normal operation, adjust the discharge valve to the desired opening degree. (6) Before stopping the pump, the discharge valve should be closed first, and then the power supply should be cut off. It is very important to note the following points when using CQB magnetic pumps; otherwise, it may cause damage to them and shorten their service life. (1) Since the cooling and lubrication of the magnetic pump bearings rely on the medium being pumped, operating the pump without any medium is strictly prohibited. Additionally, it is necessary to avoid operation under no-load conditions that may occur when power is interrupted during operation. (II) If the medium being pumped contains solid particles, a filter screen should be installed at the pump inlet; if ferromagnetic particles are present, a magnetic filter is required. (III) During operation, the ambient temperature around the pump should be below 40°C, and the temperature rise of the motor must not exceed 75°C. (IV) The medium to be pumped and its temperature must fall within the limits permitted by the pump material (refer to the attached table: engineering plastic pumps can operate at temperatures below 60°C, while metal pumps can operate at temperatures below 100°C). The suction pressure should not exceed 0.2 MPa, the maximum operating pressure should be 1.6 MPa, the density should not be higher than 1600 Kg/m³, and the viscosity should not be higher than 30x10-6 m²/S. The medium must be a liquid free of hard particles and fibers. (5) For media whose conveyed liquid tends to precipitate and crystallize, it should be cleaned promptly after use to drain all the accumulated fluid from the pump. (VI) After the magnetic pump has been operating normally for 1,000 hours, the wear of the bearings and the dynamic rings on the end faces should be inspected, and any worn-out components that can no longer be used should be replaced.