Shaanxi Shaanxi school school supply equipment water supply equipment to select the first brand, Changsha Hing rise of water, the highest price, line quality, so we trust together, the national water supply service hotline 400-0030-929. If you can spend again in yesterday, I would choose to spend more smile to face. Because sometimes too easily confused unhappy side unknowns. Shaanxi school supply equipment Selection Help mainly by frequency control cabinet, pressure sensors, pumps and other components. Frequency control cabinet by the circuit breaker, inverter, contactors, relays, PLC and other components. 1. - Shaanxi senior secondary water supply equipment selection principles (1) reservoir capacity should be greater than the maximum water volume per hour. (2) The pump head should be greater than the actual water level. (3) the pump flow rate should be greater than the sum of the actual maximum water supply. (4) frequency control cabinet selection: the user can determine the type and number of units pump height according to water supply and water, then the selection of the control cabinet. Shaanxi school supply equipment Installation Notes 1, Shaanxi secondary water supply equipment should be installed in a dry room, well ventilated, keep the ambient temperature between 5 ~ 40 ℃, the temperature does not exceed 90%, non-corrosive gases in the room, dust and flammable materials. 2, the control cabinet installation location is easy to observe the operator, operation and maintenance. 3, equipped with power supply should meet the total electric power requirements of the device, equipped with motor power, shall not exceed the load capacity of the drive. 4, Shaanxi secondary water supply equipment should be installed to minimize the elbow out of the water, in order to reduce unnecessary pressure losses, and the pressure sensor is installed in the water vibration, water pressure steady place. 5, the control cabinet shall be grounded, grounding resistance ≤3 ohms, power should be preceded by checking the control cabinet components and wiring is loose, fall off, the connector is firmly confirmed before power and correct. 6, the control device at the factory adjusted, use, non-maintenance personnel is prohibited without adjustment or change the wiring changes in member rank. 7, Shaanxi secondary water supply equipment installation, commissioning and put into use after manufacturers. 8, when the Shaanxi secondary water supply equipment put into normal operation, the pump should pump instructions require regular maintenance oiling. 9, when the control part of the failure, shall promptly notify the company's maintenance, without the consent of the user may not install or adjust their own fold. Shaanxi school supply equipment technical indicators 1, water flow 0-1500 M3 / H head 2, the control motor power 0.75 --- 1500KW 3, the number of households 10-10000 household water supply 4, the pressure control range 0.15-1.6MPa 5, the average saving the rate of 30-60% 6, sine wave PWM control principle or space vector SVPWM 7, single pump or multiple pump operation mode automatically switches 8, the control method is programmable and PID control 9, overload 150% 60 seconds 10, Shaanxi secondary water supply equipment protection soft start, over-voltage, phase, in disguise, undervoltage, open circuit, instantaneous power failure, short circuit, etc. are self-diagnosis display and protection.