The outlet valve of the centrifugal pump requires pressure buildup to allow flow; seeking help.
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The device is equipped with a jacketed circulation cooling system, which consists of a pump and various branching cooling circuits that cool 5 different areas before the coolant returns back. It contains a recirculating centrifugal pump that must operate under pressure; if the outlet valve is fully open, no flow will occur. May I ask if the flow rate of this centrifugal pump has been set too low? But this traffic volume is calculated by aggregating the demands from various points; how can that be?
It’s a circulating loop, and there’s also a head tank – that shouldn’t be the case.
Is there a collection tank at the entrance? ? ?
Yes, it’s vertical; there is just one inlet valve and filter between it and the entrance.
It is recommended to consider the following: 1. Check the inlet filter; 2. Ensure that the circulation pipes are unobstructed; 3. Monitor the liquid level in the collection tank; 4. Check whether the outlet pressure of the pump has decreased compared to before, and whether the pump needs maintenance due to prolonged use ! Hope this helps!
Let’s learn this: in our area, for the pumps, pressure is built up first after starting them, and then the outlet valve is opened while monitoring the pressure, so as to maintain a certain level of pressure and ensure that the pressure doesn’t drop when the valve is opened
It is recommended to check whether the internal/external opening degree of the valve matches. During installation, it may have happened that the valve was installed in the reverse position, with the open position ending up as the fully closed position.