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Issues with the circulating water in shielded pumps

2019-08-04View Original

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There are many shielded pumps, the kind with small water coolers. The operating temperatures range from 100 to 240. I have a question: can it continue to operate in the event of a disruption in the circulating water? How long can it keep running? Ten minutes? Five minutes? I hope the experts can give some sound advice! Thank you
Reply #22019-08-04
For Haimitike, ask the manufacturer
Reply #32019-08-04
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Reply #42019-08-05
Interrupting the circulating water flow is an abnormal situation that can cause damage to the pump. As for how long it can withstand such conditions, only the manufacturer would know for sure (and even they might not be able to answer, as this is caused by problems with the operating conditions)
Reply #52019-08-05
This type of pump is not allowed to operate under either 100-240 degrees of temperature. As for the operating time, it’s similar to destructive testing: it’s difficult to predict how much damage will occur. Just like a car, can it drive without engine oil? How long can it run? Answer: Similar—just thinking about the terrifying consequences makes it advisable not to try it :)
Reply #62019-08-05
The 5th floor is the correct choice. Just like with certain illegal actions, it might not cause any problems, or it might cause problems right away
Reply #72019-08-06
Not even a minute – it’s a matter of principle
Reply #82019-08-06
This pump is of good quality. The price is very high; why worry about that little amount of condensation water?
Reply #92019-08-07
Once there is no cooling water, the medium circulating inside the shielded pump may vaporize, resulting in poor support and cooling of the bearings by this internal circulation, which in turn leads to damage to the sliding bearings.
Reply #102019-08-07
Okay. I also think it’s not possible, but a guy who supplies parts for Haimi said that four or five hours should be fine, while the workshop supervisor said 10 minutes would be sufficient. I still think the pump needs to be stopped right away
Reply #112019-08-08
Based on my many years of experience, what’s important is to look at the temperature rise; if the rise is not significant, then 10 minutes of operation is fine, with only minor issues possibly arising, such as slight wear on the graphite bearings. But when these issues accumulate to a certain extent, they can lead to accidents. Therefore, one should have principles in life as well as in doing things; adhering to principles is the minimum requirement for a good technician.

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