Water ring vacuum pump operation and maintenance procedures

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Catalog 1. Equipment technical specifications 2. Preparation before start-up 3. Start-up operation 4. Stopping operation 5. Maintenance and precautions during operation 6. Abnormal phenomena and elimination methods 1. Equipment technical specifications Name No. Pumping capacity m3/h Ultimate pressure mmHg Power kw Speed r/min Working fluid consumption m3/min T6105 tower vacuum pump-liquid ring vacuum unit P6106A/B 700 5 22 980 Vacuum Pump - Water Ring Vacuum Machine Pump V-1.01A/B 1100 8 37 980 T6104 Tower Vacuum Pump - Liquid Ring Vacuum Unit P6105A/B 140 25 5.5 1440 0.5 2. Preparation work before start-up 2.1. Whether the area around the pump is clean, and no things that hinder the operation are allowed. 2.2. Check whether the process is correct. 2.3. Check whether all connectors and anchor bolts are completely tightened. 2.4. Check the sealing of the piping system and reconnect if necessary. 2.5 Check and clean the driving filter installed at the air inlet, and ensure that its filtration is effective. 2.6. Check whether the connection parts are tight and whether there are leaks, and whether the valves and pressure gauges are sensitive and easy to use. 2.6. Check whether the grounding wire is complete and tightened. 2.7. The pump drain port and the unit drain port must be closed. 2.8. Check the rotation direction of the motor before operation. 3. * | $ Start-up operation 3.1 After getting in touch with the relevant positions, close all valves of the standby pump before starting. 3.2 Open the pump working fluid valve and replenish the working fluid to the center line of the separator level gauge. Prefill the working fluid or open the bypass valve to ensure that the working fluid flows into the vacuum pump. 3.3 Turn on the cooling water source of the heat exchanger. 3.4 Jog the motor and check the rotation direction of the pump. 3.5 Start the vacuum pump and open the working fluid valve at the same time. During no-load operation, the working fluid remains within the set working range. 3.6 After normal startup, connect the system inlet valve and start working. 4. Parking operation 4.1 After getting in touch with the relevant positions, close the system inlet valve and the working fluid valve at the same time. 4.2 Stop the vacuum pump. 4.3 Close all valves and cut off the power supply. 4.4. After long-term shutdown or shutdown during frost season, open the working fluid discharge valve to drain all the working fluid in the system. At the same time, unscrew the plugs at the bottom of the heat exchanger pipeline (one for the tube side and one for the shell side). 5. Maintenance and precautions during operation 5.1 When the pump chamber is filled with water, do not start the pump, otherwise the blades and the pump shaft will break. 5.2 During the working process, if the temperature of the working fluid continues to rise, it will affect the normal working performance of the vacuum pump. At this time, you should check whether the cooling water volume, water temperature and water pressure of the heat exchanger meet the requirements. Also check whether the heat exchanger or filter is contaminated, and clean the heat exchanger if necessary. 5.3 Liquid level in the separator. The liquid level should be below the maximum mark. If it is higher than the maximum value, it indicates that there is a problem with the overflow system. If it is lower than the minimum value, it indicates that there is a problem with the fluid replenishment system or there is no working fluid replenishment. 5.4 Smooth operation of vacuum pump and motor. The motor current must not exceed the rated current. 5.5 There is no obvious water vapor or water droplets at the separator exhaust port. 5.6 If abnormal sounds are found during work, stop the machine immediately for inspection and treatment. 5.7 Always keep the equipment and its surroundings clean. 5.8 Record relevant information and data on time. 6. Abnormal phenomena and elimination methods Faults and elimination methods (see table) Cause of failure and remedial measures: Motor does not start, no sound. At least two power cords are broken. Check the wiring. Motor does not start, there is a buzzing sound. One wire is broken, the motor rotor is blocked, the impeller is faulty, the motor bearing is faulty. If necessary, clean the pump and correct the impeller clearance. Replace the impeller bearing. When the motor is started, the circuit breaker trips and the winding is short-circuited. The motor is overloaded and the exhaust pressure is too high. The working fluid is too high. Check the motor winding more often. Reduce the working fluid flow. Reduce the exhaust pressure. Reduce the working fluid consumption. The power is too high. Precipitation occurs. Clean and remove the sediment. The pump cannot produce vacuum. No working fluid. System leaks. Serious rotation direction is wrong. Check the working fluid. Repair the leak. Replace two wires. Change the direction of rotation. Vacuum degree is too low. The pump is too small. The working fluid flow is too small. The working fluid temperature is too high (>15℃). Mild leakage in the abrasive system. Seal leakage. Use a larger pump to increase the flow of the working fluid. Cool the working fluid and increase the flow. Replace parts. Repair the leak. Check the seal. Sharp noise will cause cavitation. The flow of the working fluid is too high. Connect the cavitation protection parts. Check the working fluid. Reduce the flow. The pump is leaking. The sealing gasket is broken. Check all sealing surfaces.