【Q&A Question 238】2018.09.01
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【Q&A Question 238】September 1, 2018: Briefly describe the inspection items for the operating pump before taking over its operation. 1. Verify that the pump’s outlet pressure (vacuum level) is within the specified range, and that there is no freezing or blockage in the pressure gauge tubes. 2. Ensure that the flow directions at the pump’s inlet and outlet are correct, and that the valve openings are appropriate. 3. Confirm that the motor current is within the specified limits. 4. Feel the bearings at both ends of the pump as well as the bearing covers of the motor to check for any signs of overheating. 5. Check that the filters in the lubrication oil cups are intact, and that the oil level is above 1/2 of the container. 6. Listen for any abnormal noises coming from the motor, bearings, pump shaft, and pump cylinder. 7. Inspect the pump’s seals to determine if there are any leaks. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Correct: 3 wealth, Incorrect: 1 wealth ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space through the summary post below
1. Verify that the pump outlet pressure (vacuum level) is within the specified range, and that there is no freezing or blockage in the pressure tapping pipes. 2. Ensure that the flow directions at the pump’s outlet and inlet are correct, and that the valve openings are appropriate. 3. Confirm that the motor current is within the specified range. 5. Feel the bearings at both ends of the pump as well as the bearing covers on the motor to check for any signs of overheating. 6. Check that the filters in the lubrication oil cups are intact, and that the oil level is above 1/2. 7. Listen for any abnormal noises coming from the motor, bearings, pump shaft, and pump cylinder. 8. Inspect the pump’s seals to ensure there are no leaks. 9. Check whether the hot oil pump has been preheated. 10. Verify that all attachments such as foot bolts are present, in good condition, and functioning properly. 11. Check whether the conveyor belt of the feed pump is loose or slipping, and whether there are any abnormal vibrations in the pump body. 12. Ensure that the grounding wires are in good condition
Lubricant level, pump operating pressure, current, and any abnormal noises
1. Verify that the pump outlet pressure (vacuum level) is within the specified range, and that there is no freezing or blockage in the pressure tapping pipes. 2. Ensure that the flow directions at the pump’s outlet and inlet are correct, and that the valve openings are appropriate. 3. Confirm that the motor current is within the specified range. 5. Feel the bearings at both ends of the pump as well as the bearing covers on the motor to check for any signs of overheating. 6. Check that the filters in the lubrication oil cups are intact, and that the oil level is above 1/2. 7. Listen for any abnormal noises coming from the motor, bearings, pump shaft, and pump cylinder. 8. Inspect the pump’s seals to ensure there are no leaks. 9. Check whether the hot oil pump has been preheated. 10. Verify that all attachments such as foot bolts are present, in good condition, and functioning properly. 11. Check whether the conveyor belt of the feed pump is loose or slipping, and whether there are any abnormal vibrations in the pump body. 12. Ensure that the grounding wires are in good condition
1. Verify that the pump outlet pressure (vacuum level) is within the specified range, and that there is no freezing or blockage in the pressure tap lines. 2. Verify
I don’t know about that. Take a look and learn a bit
1. Appearance: Whether there is leakage in the mechanical seal, if there have been any changes to the process flow, whether the drain valve is properly closed, and the motor grounding. 2. The pump’s flow rate, pressure, and temperature； Instrument readings such as the motor current and temperature at various points ； 3. Are there any noises, and is the vibration abnormal?
1. Verify that the pump outlet pressure (vacuum level) is within the specified range, and that there is no freezing or blockage in the pressure tapping pipes. 2. Ensure that the flow directions at the pump’s outlet and inlet are correct, and that the valve openings are appropriate. 3. Confirm that the motor current is within the specified range. 5. Feel the bearings at both ends of the pump as well as the bearing covers on the motor to check for any signs of overheating. 6. Check that the filters in the lubrication oil cups are intact, and that the oil level is above 1/2. 7. Listen for any abnormal noises coming from the motor, bearings, pump shaft, and pump cylinder. 8. Inspect the pump’s seals to ensure there are no leaks. 9. Check whether the hot oil pump has been preheated. 10. Verify that all attachments such as foot bolts are present, in good condition, and functioning properly. 11. Check whether the conveyor belt of the feed pump is loose or slipping, and whether there are any abnormal vibrations in the pump body. 12. Ensure that the grounding wires are in good condition
Vibration measurement, temperature measurement, current verification, lubricant level, outlet pressure, receipt and dispatch processes, etc.
1. Verify that the pump outlet pressure (vacuum level) is within the specified range, and that there is no freezing or blockage in the pressure tapping pipes. 2. Ensure that the flow direction at the pump’s inlet and outlet is correct, and that the valve openings are appropriate. 3. Confirm that the motor current is within the specified limits. 4. Feel the bearings at both ends of the pump as well as the bearing covers on the motor to check for any signs of overheating. 5. Check that the oil level in the lubrication oil reservoir is normal.
1. Listen on-site to check for any abnormal noises or vibrations in the motor and pump. 2. Verify that the level of lubricating oil is within normal limits; for pumps equipped with oil stations, it is also necessary to check the oil temperature, oil pressure, and filter pressure difference. 3. Inspect the seal oil, including its pressure or level (the inspection requirements vary depending on the type of seal), as well as the cooler used for cooling the seals. 4. Check the flow of cooling water and its effectiveness in cooling various parts of the pump. 5. Determine whether there are any leaks at the pump’s sealing points. 6. Examine the condition of the inlet and outlet pipelines as well as the pump’s load level. 7. The operator needs to monitor data such as the temperature, displacement, and vibration of the pump and motor.