Is there anyone an expert on water ring vacuum pumps? I need help!
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The 5110 stainless steel water ring vacuum pump from Zibo, Shandong, has a motor power of 4KW. Yesterday, when the vacuum pump was turned on, it made abnormal noises and the motor became hot; it tripped after a short while. An electrician used a clamp meter to measure the current, and it was less than 12A. The current has exceeded the normal level. The other vacuum pump, on the other hand, is noise-free and its motor does not get hot. The current is around 8A. (Electrician’s experience: Current = Power × 2; the normal current should be a little over 8A.) There is also a strange phenomenon: under normal operation, at extreme vacuum levels, the exhaust port of the vacuum pump’s pump head (the interface for the cavitation protection tube) remains slightly open to prevent excessive noise. This exhaust port draws air inwards. However, when the pump experiences an electrical overload and the exhaust valve opens at extreme vacuum levels, water sprays out from that valve. I remember that this same phenomenon occurred whenever the pump broke down in the past. Is there anyone who knows a lot about water ring vacuum pumps? Could you help figure out what the cause is?
In addition to the friction between the moving and stationary parts in the mechanical structure, there are two points to keep in mind when operating a water ring vacuum pump to avoid overcurrent: 1. The water ring should not be too thick, otherwise it will not deliver air but instead cause water to be pumped out. 2. Pressure should not build up on the exhaust side, as this will lead to overcurrent. You can use these two points as a guide for troubleshooting
The 5110 water ring vacuum pump from Zibo has valve plates on the middle disc; if these valve plates are damaged, that could be the problem
Also, the water supply pressure should not be too high, and the amount of water should not be excessive
The current is high; it might be due to an excessive amount of water. Try reducing the water flow by closing the valve
If water can flow out, it means the tank is full and can no longer pump water; of course, it’s overloaded
The water volume is too high, preventing the formation of a water film.
The water level is probably too high; check it
I reduced the water inflow this morning and the problem was solved; thanks to everyone
It’s difficult to control the water volume; I recommend creating a simple closed-loop system that uses solenoid valves and level sensors to automate the addition and removal of water. After all, with fewer human factors involved, the likelihood of errors is reduced
This morning, another vacuum pump started operating with a high level of water flow; after reducing the flow rate, everything returned to normal, which once again confirms the reason everyone mentioned.