Smoke coming from the pump oil tank
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I switched to another pump for use, and within less than 5 minutes of doing so, I noticed smoke coming from the pump’s oil tank cover and the bearings turning red. I’m not sure what caused this Please share your thoughts, thank you
It must be heat generated due to friction; the specific cause could be poor lubrication or too small an installation clearance
If it’s a pump that has just been repaired, still check the installation clearance and the gland issues. If a pump that has been kept in reserve after operation continues to be used, there may be impurities or water in the lubricating oil, resulting in poor lubrication; it’s also possible that the vibration during operation is excessive or there are problems with the support rings. Ultimately, disassembly and inspection can reveal problems.
It must have been dry ground; otherwise, it couldn’t be that effective
【Smoke coming from the pump oil tank cover, bearings turning red】There is definitely no lubricating oil, and there may also be issues with the bearing installation.
There is a high possibility of a lack of oil; could the oil level gauge be showing an incorrect oil level? Before starting the pump, it is necessary to check the oil level, perform shaft rotation tests, and inspect the valves. It would be wrong to start the pump without carrying out these checks!
Check whether the lubricant has been filled to the specified level. If there is no issue with the lubricant, then consider whether the bearing clearance is too small; an overly small bearing clearance can cause the bearings to lock up due to thermal expansion once the equipment starts operating.
How is it possible to detect red bearings without disassembling the pump? . . . The bearing temperature is too high. It’s not clear whether this pump is a high-temperature pump; it stopped working after just 5 minutes. . . Was it tested after the maintenance was completed? If a trial run is possible, it’s likely that water has entered the bearing housing, which caused the bearings to rust, or the oil tank hasn’t been cleaned and contains debris such as iron particles. If there was no trial period, it might be due to assembly quality issues or a lack of lubrication. Check whether the bearing and its mounting are too tight, resulting in low bearing clearance
Was the pump turned over before starting? If the cranking is fine, it’s likely a lubricant issue: 1. The oil level indicator is inaccurate; the oil supply pipe is dirty and blocked, preventing oil from flowing in and thus the oil level doesn’t drop ； Water enters the 2 bearing housings, causing the lubricating oil to deteriorate.
There are many types of mechanical pumps, and the information available is incomplete, making it impossible to conduct a detailed analysis. With a fuel tank and red coloring, the most likely causes for these two issues are poor lubrication, followed by improper assembly.