What are the inspection items for a regular centrifugal pump during operation?

Temperature at the pump shaft end, motor temperature, current, lubricant level, and whether there are any noises during operation when the pump is stopped, etc.

Before starting the pump, check the condition of its lubricating oil: whether there is any oil present, whether the amount is appropriate; if oil needs to be added, do so, and also check the quality of the oil. If the oil needs to be replaced, carry out that replacement. Check the cooling water system of the pump to ensure it is unobstructed. Examine the operation of the inlet and outlet valves. Also check the electrical supply. During operation, pay attention to the pressure at the pump’s inlet and outlet, as well as the motor current. If oil sealing is used, monitor the sealing pressure. The cooling water system should be unobstructed, the oil quality should be good, the oil level should be normal, and the lubrication should be adequate. Check for any abnormal noises from the pump’s bearings and motor, as well as the temperature of the shafts and end faces, as well as any signs of vibration. Additionally, pay attention to whether there are any leaks in the seals on the pump’s inlet and outlet flanges.

Each shift must measure bearing vibration and bearing temperature once, and record the values.

Check whether the pump has vibrations or abnormal noises, any leaks, whether the oil level and pressure are normal, and whether the cooling water is functioning properly. If it is a heavy oil pump, it is also necessary to check whether the preheating is working correctly

What is the maximum temperature allowed, and what is the maximum vibration level?

Check the lubrication condition of the pump: whether there is lubricant present and whether its amount is appropriate, ideally between 1/2 and 2/3 of the required level; add lubricant if necessary, and assess its quality – replace it if it needs to be changed. Examine the pump’s cooling water system to ensure it is unobstructed. Check the operation of the inlet and outlet valves. Pay attention to the pressure at the pump’s inlet and outlet, as well as the motor current. If oil sealing is used, monitor the sealing pressure as well. Check for any abnormal noises from the pump’s bearings and motor, as well as the temperature of the shafts and end faces, as well as any signs of vibration. Additionally, check the seals on the pump’s inlet and outlet flanges to ensure there are no leaks

The inspection tasks before starting the pump include: the cooling water and temperature of the pump, the quantity and quality of the lubricating oil, rotating the pump shaft, the current consumption of the motor, and whether the pressure is within the specified range. For pumps in operation, the main aspects to check include: motor temperature, motor current, seal temperature, lubricating oil and cooling water, as well as whether the outlet pressure of the pump is stable