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2. Machine installation and adjustment 2.1 Precautions for installation 2.1.1 It is necessary to take proper care of the machine before and after installation; attention should be paid to protecting the motor from moisture, as well as to safeguarding the electrical control system. 2.1.2 Safety must be observed during shoveling and lifting to prevent the machine from being damaged by collisions. 2.1.3 The YGD centrifuge must be installed horizontally, with the reference surface being the upper surface of the base (levelness ≤ 3mm). 2.1.4 Equipment installed adjacent to the centrifuge, as well as other devices, should be kept at a sufficient distance from the centrifuge to prevent collisions during operation that could damage the machine or cause noise, and to facilitate its maintenance and repair. The layout of the centrifuge’s installation location must take full account of the space required for its use and maintenance. There should be a pedestrian walkway of at least 1 meter around the centrifuge unit. There must be more than 2 meters of space above the centrifuge unit for installation, maintenance, and repair. 2.1.5 This machine is a baseless centrifuge; it can be used normally by connecting the wires of the electrical control box in advance to the wires adjacent to the motor. 2.1.6 Machines are generally installed as complete units and must not be disassembled; if disassembly is indeed necessary, it must be approved by the manufacturer’s technical personnel after assembly. 2.1.7 The installation foundation of the centrifuge must be level; its weight should be approximately three times that of the machine. In addition to bearing the static load of the machine, the foundation must also be able to withstand dynamic loads. If the centrifuge is installed at a raised height, the load-bearing beams and operating platforms are the responsibility of the engineering department responsible for designing such installations. 2.1.8 Since the centrifuge experiences slight vibrations when operating at high speeds, the pipes connected to it (feed pipes, discharge pipes, washing pipes, exhaust pipes, cable conduits, etc.) must be connected in a flexible manner. The connection points must have reliable sealing or insulation devices to ensure no leaks and safe electrical operation. The diameter of the external liquid outlet pipe must not be smaller than that of the machine’s liquid outlet pipe, and it must not have any dead bends or blockages. The piping should be arranged at a lower height than the outlet pipe opening, with an appropriate height difference to ensure smooth liquid flow. 2.1.10 Based on the characteristics of the material to be separated, select an appropriate filter cloth model and sew the filter bags according to the manufacturing instructions provided by the manufacturer, to ensure good fit between the filter bags and the drum cylinder. 2.1.11 According to the electrical control schematic diagram of the YGT/YGD series centrifuges. The electrical technician will connect the electrical wiring. Waiting for the centrifuge to operate and be adjusted. 2.1.12 After the centrifuge has been installed, connect the power supply to the motor. Adjust the rotation direction of the motor as indicated on the centrifuge’s casing, as well as the tension of the V-belt, in order to prepare for a trial run. 2.2 Warnings: 2.2.1 The enclosure cover must be closed and locked before the machine is started! 6.2.2 It is strictly prohibited to open the enclosure cover while the machine is running! 6.2.3 Users should select the material for the drum based on the properties of the materials being processed, in order to prevent corrosion or rapid corrosion. 6.2.4 Rigid connections must be strictly avoided for the feed pipes, washing pipes, exhaust pipes, and liquid discharge pipes on the centrifuge unit when connecting them to the outside environment! This is to prevent interference with the unit’s own vibration damping system and to avoid damaging the machine. 3. Use of the machine 3.1 Power supply and motor a. Power supply: 380V ； 50Hz ； The motor power is specified in the technical parameters. b. The motor must be properly grounded to ensure electrical safety. c. The motor must rotate in the direction indicated on the nameplate; reverse rotation is not allowed! d. The connection between the centrifuge and the power source is made in accordance with the electrical control schematic; the types and specifications of the electrical components used are determined based on parameters such as the motor’s power and rated current, and they are selected in compliance with relevant electrical control standards, thereby preventing electrical overload and ensuring effective overload protection. 3.2 Dragging and control a. The drum of the centrifuge is driven by a conventional or explosion-proof AC motor, with start-up via an inverter or clutch. b. Braking is achieved through variable-frequency energy consumption braking or manual braking. 3.3 Operations 3.3.1 Preparations before startup: a. Before use, the work area should be cleaned to remove any obstacles that could interfere with the operation, and the following components should be inspected. b. The braking system should be flexible and reliable ； c. The drum must not get stuck or seized when rotated by hand ； d. The bolts in all sections must be tightened properly without any looseness ； e. Check whether the filter bags meet the requirements for liquid removal from the material; there should be no damage ； f. Is the rotation direction consistent with the direction of the indicator? g. The casing cover should flip smoothly and reliably. h. Check whether all connections are correct and reliable. 3.3.2 Startup and Operation: 3.3.2.1 Variable-frequency startup: (1) Connect the power supply and press the start button; the frequency converter then controls the motor to operate according to the pre-set parameters (start time, speed ranges, braking time, speed display, etc.) (manual control is also possible), and the centrifuge gradually increases in speed. . (2) When the centrifuge reaches the set feeding speed, open the feed valve to start feeding, while filtering out a portion of the liquid phase. If necessary, feeding can also be carried out before starting up; the amount of feed is determined by the operator based on an visual inspection or estimation of the centrifuge’s volume and capacity. Once the desired amount of material has been added, close the feed valve. When adding material, it is necessary to ensure that neither the volume nor the weight of the filter cake exceeds the specified limits. When the filter cake density is high, it is necessary to ensure that its weight does not exceed the specified loading weight to avoid danger ； When the filter cake density is low, it is necessary to ensure that its volume does not exceed the specified loading capacity to prevent the slurry from overflowing. (3) If the filter cake needs to be washed, open the washing valve to wash the filter cake, while allowing a portion of the washing liquid to drain off (the washing time depends on the process requirements). (4) The centrifuge is brought to its rated speed to further remove liquid from the filter cake. (5) After the liquid has been removed, press the stop button; the centrifuge will then engage in energy-regenerative braking until the drum stops rotating. (6) Release the locking handle to open the centrifuge housing lid, and manually remove the filter cake. When unloading, care should be taken to protect the filter cloth so that it is not damaged, as this will prevent leakage and vibration during the next separation process. (7) Check whether the filter bags are intact, re-install them, close the outer cover and lock the handle, then start the second working cycle. (8) Precautions: The inverter (if equipped one) has preset values for the acceleration (start-up) time and deceleration (braking) time. Users can make appropriate adjustments according to actual conditions, but such settings must be carried out by qualified professionals. For specific setup methods, please refer to the frequency converter user manual. The deceleration time must not be lower than the values specified in the table above! Otherwise, the energy-consuming resistors inside the control cabinet will overheat and get damaged, or the frequency converter will enter protection mode. After use, the power supply can be turned off only when the inverter displays a reset to 0. 3.3.2.2 Clutch start (1): Turn on the power supply and press the start button; the centrifuge gradually accelerates. . (2) When the centrifuge reaches medium or high speed, open the feed valve to start feeding, while filtering out a portion of the liquid phase. If necessary, feeding can also be carried out before starting up; the amount of feed is determined by the operator based on an visual inspection or estimation of the centrifuge’s volume and capacity. Once the desired amount of material has been added, close the feed valve. When adding material, it is necessary to ensure that neither the volume nor the weight of the filter cake exceeds the specified limits. When the filter cake density is high, it is necessary to ensure that its weight does not exceed the specified loading weight to avoid danger ； When the filter cake density is low, it is necessary to ensure that its volume does not exceed the specified loading capacity to prevent the slurry from overflowing. (3) If the filter cake needs to be washed, open the washing valve to wash the filter cake, while allowing a portion of the washing liquid to drain off (the washing time depends on the process requirements). (4) After the washing and liquid removal are complete, press the stop button and use manual braking until the drum stops rotating. (5) Release the locking handle to open the centrifuge housing lid, and manually remove the filter cake. When unloading, care should be taken to protect the filter cloth so that it is not damaged, as this will prevent leakage and vibration during the next separation process. (6) Check whether the filter bags are intact, re-install them, close the outer cover and lock the handle, then start the second working cycle. 3.4 Inspection and Adjustment 3.4.1 Different materials require testing in order to determine the most suitable centrifuge speed. For centrifuges with variable-frequency starting, it is recommended to use a lower speed as much as possible, provided that the process requirements are met, in order to reduce wear on components such as bearings and to minimize machine vibration. Attention! Centrifuges with variable frequency control must not be used for extended periods at speeds below 50 r/min ； It should also not exceed its rated speed to avoid damage.