Help, gear pump
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There is a gear pump inside the device, which stopped operating due to a fault indication without any apparent reason. Before stopping, it was in circulation mode and did not deliver any material outward. The frequency conversion rate of the pump was around 30%, while the pressure inside the tank was 40 KPA. When the pump stopped, there was no increase in current; instead, it dropped to 0 directly. No cause was found after disassembling the equipment, and testing the motor individually also revealed no issues. Previously, the frequency converter of the pump did not operate at the actual frequency specified, but the issue was resolved after repairs. I would like to ask the experts here: what could be the reasons behind its sudden shutdown? PS: The material has a temperature of around 175 degrees Celsius and high viscosity; the pump body and pipes are equipped with S8 heating
Hello, OP! According to what you said, \"when the pump stops operating, the current does not show any tendency to increase; instead, it drops straight to 0.\" I believe there is no problem with the pump itself, as its wear and tear is not that rapid. You might want to check whether there are any issues with the variable-frequency motor and the inverter. I hope this can help you. If you have any issues with gear pumps, feel free to contact me at any time. My phone number: 13313170275 (same number on WeChat)
Is it caused by related interlocks? For example, the liquid level in the tank is very low…
The results of the recent inspection and disassembly of the equipment indicated that the issue was related to the bearings; after replacing the bearings, the machine did not stop operating again