Fault in the Dalian Empire shielded pump
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The equipment is set to be put into operation these days. One of the pumps keeps tripping. We considered factors such as bearing wear, so we replaced the relevant components. After releasing air from the system, the pump started running; it operated for about ten minutes before tripping again. We released air once more, and what came out was black material indicating bearing wear. We replaced the components again, and after running for over twenty minutes, the same problem occurred. We tried replacing the components yet again and kept running the pump for two hours – it was a repetitive process... It’s really frustrating. I can’t identify the cause at the moment. It seems that the pump rotates smoothly, and there’s very little shaft play, almost none at all. I hope fellow experts can help analyze this situation. The TRG gauge remains in the green zone
Consider whether the medium has any special properties! Are the inlet pipes blocked?
Adjust the G value and serial quantity according to the instructions. . .
Still, the main issue is improper selection; check whether the head and medium temperature are suitable.
Reply to 1# TracyJozh: How dare you start operating without checking for any volume fluctuations? You need to find the cause. Have you found it yet?
Reply to 1# TracyJozh: Do you have filters installed at the inlet of the pump in your system? It’s necessary to have them; there are quite a lot of impurities. Also, replacing the bearings in a canned motor is quite difficult, especially those located next to the motor – the impeller has to be removed first, which I find to be very troublesome. Do you know what the shaft play specified by the manufacturer is, what the clearance should be?
Reply to 6# ji7058891: It’s okay, it’s fine; bearings are still relatively easy to replace
Reply to 5# zhou*: The shaft is a bit bent, 70 silk; the pump has been replaced
I think we could try adding another cushion
Regarding the tripping issue, I think there’s a problem with the rotor or the stator shielding cover. Try consulting an electrician; if that doesn’t work, replace it
Things from the empire. It feels pretty good. After-sales service is efficient, but it’s hard to say the same for matters related to money. The bearings in our impeller section have been in use for two years, with the clearance remaining within acceptable limits. If there is a problem with the newly installed pump, consult the after-sales service department; they will resolve it for you promptly.