Problems with shielded pumps
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I have a question for everyone: what are the hazards of vacuum formation in shielded pumps?
Without liquid, the pump will have problems if it isn’t cooled. It is recommended to check the operating instructions for the canned motor pump to understand its principle. Baidu has it.
The most serious problem is damage to the seal, which requires returning it to the manufacturer for repair
If the sliding bearing is damaged, there may also be problems with the shielding sleeve
Either replace the pump or send it to the manufacturer for repair. Sometimes it’s better to replace a canned motor pump rather than repair it
If not taken care of, the sliding bearing will get damaged; over time, the axial force will wear out the bearing in the axial direction, and if the temperature rises further, the motor will be damaged as well. That’s the end of it – one has to replace it with a new one without any need for repairs. At that point, the cost of repairing it is almost the same as the cost of buying a new one.
The shielding sleeve will be damaged and sent back to the factory for repair. It takes a long time and is costly.