First, the characteristics of PWDDFL series of multi-suction head liquid sewage pump PWDDFL multi-suction head sewage pump with single (double) runner, single (double) blade structure, non-blocking hydraulic design, through the performance, no leakage, Small footprint, stable operation, small vibration, high reliability, easy installation, easy operation and automatic control. The series of products have been in the CLP Power Plant Xinchang, Huaneng Jinggangshan Power Plant and other countries large-scale 600MW generator sets successfully replace the domestic similar products safe and smooth operation, praised by customers. The series of pump flow: 5 ~ 800m3 / h Head: 5 ~ 80m Motor Power: 0.75 ~ 75KW Discharge diameter: 40 ~ 300 mm Through the particles: 5 ~ 15㎜ (discharge diameter ≤ 80mm), 15 ~ 30㎜ 100 ~ 150mm),> 30mm (discharge diameter 200 ~ 300mm time). Second, PWDDFL series of multi-suction head liquid sewage pump conditions 1, the transmission medium temperature does not exceed +40 ℃; 2, the transmission medium PH value of 4 to 10; 3, voltage 380V, 50Hz; 4, dirt through capacity: solid Particle diameter of 30% of the discharge, the fiber length of the export diameter of 3 times. Third, PWDDFL series of multi-tip liquid sewage pump main purposes 1, factories, commercial areas seriously polluted wastewater discharge. 2, urban sewage treatment drainage system. 3, residential sewage discharge stations. 4, air defense system drainage station, water plant drainage. 5, hospitals, hotels, sewage discharge. 6, municipal engineering construction site. 7, exploration, mining equipment attached to the machine. 8, rural areas, digesters, farmland irrigation and other pumps. Fourth, PWDDFL series of more suction head liquid sewage pump lifting and use matters needing attention 1, lifting, pay attention to protect the pump from damage. 2, the pump can not be placed at the inlet of the sewage pool. When the pump seat is in the mud or on the floating sand, the pump suffers from vibration. In this case, it is recommended that the pump be placed on a larger floor. 3, if the temperature dropped below 0 ℃ and the sewage is not frozen, the pump can continue to use. 4, the outlet pipe diameter should be matched with the outlet diameter of the pump (allowing to increase the diameter of the outlet pipe, but can not be reduced). 5, the use of sewage pumps, such as the surrounding accumulation of mud, debris, etc., it will reduce the transmission speed and shorten the life of the pump. In the case of more debris in the pool, it is recommended to place a filter on the periphery of the pump. The filter wraps the pump to prevent large sundries from entering the pump. The opening size and flow area of ​​the filter should be appropriate. Affect the pump suction. 7, note, not cut off the power before moving or lifting the pump. 5, PWDDFL series multi-tip liquid sewage pump instructions Before installing and using PWDDFL multi-suction sewage pump, must read carefully the instructions, to avoid improper use and damage to the machine, double check, the selection of the pump is correct , The actual conditions of use and the provisions of the use of the same conditions. Before starting the pump: A qualified electrician should check the system to ensure that the following electrical protection measures are taken. 1, the pump before operation, the application of 0 ~ 500V megger, check the motor main cable three-phase winding insulation resistance, the minimum shall not be less than 1 megohm, never allowed to check the control cable with a shake table to avoid damage to internal electronic components. 2, The power supply voltage must be within ± 5% of the rated voltage marked on the nameplate. The increase of the power supply voltage should not exceed 10% of the rated voltage. If the power supply is far from the place where the water pump is used, The area should be bolded with as few joints as possible and the joints must be sealed to prevent leakage. 3, the pump in use, must be equipped with a dedicated control box, and operate strictly in accordance with instructions, before use, first check the starting equipment wiring is correct, whether the starting device is flexible, contact is good, the metal shell of the starting device is reliable Ground. 4, electrical control cabinet should be moisture-proof, cable placement should be noted that not hanging down on the suction inlet of the pump. 5, check the direction of motor rotation, the pump installed for the first time before starting, or after each reinstallation, should check the direction of rotation. The detection method is that the elastic pin component is not installed for a moment, and the motor is operated to see whether the rotation direction of the motor coupling is consistent with the nameplate direction indication. If the rotation directions are inconsistent, the positions of any two phases in the three phases can be exchanged. If several pumps are connected to a single controller, each pump must be checked separately. 6, the correct installation and use, pump work, should be running smooth, flexible, no abnormal sound and vibration, or should be shut down to check the wiring method, the rotation direction is correct. 7, the float switch automatic control of the pump should be based on the amount of water in the sewage pool and the displacement of the pump, through the calculation, according to the provisions of the pump the maximum number of starts per hour to determine the float open and stop the pump position. Pump start 1, closing, if the motor does not turn, should quickly and decisively pull the gate, so as not to burn the motor. 2, after starting the motor, should pay attention to observe the motor and line voltage and ammeter if there is an abnormal phenomenon, should immediately stop and find out the fault and then before closing again. 3, as required, limit the number of continuous motor start. 4, several motors from a transformer-powered, can not be started at the same time, should be descending from Taiwan to Taiwan. 5, the monitoring of pump current monitoring: the motor current shall not exceed the rated current of the nameplate, three-phase current imbalance, no-load no more than 10% of the above contained no more than 5%. 6, voltage monitoring: power supply voltage and voltage deviation does not exceed ± 5%, three-phase voltage unbalance does not exceed 1.5%.
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