Pump cooling system level alarm issue
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Recently, several horizontal pumps were installed. Due to the viscous nature of the medium, each pump is equipped with a cooling system; however, there is no power source for this system, and circulation relies on gravity. When the pumps arrived, the cooling systems came equipped with two level alarm interfaces: one for high liquid level and one for low liquid level. Yet the design team provided only one control cable for the level alarms, and it was connected to the high liquid level alarm. I find this unusual – I wonder if anyone has encountered such a practice, and whether it is correct.
Original poster, if the pump uses a closed internal circulation cooling system, it is necessary to prevent thermal expansion caused by overheating of the coolant; therefore, a high-level alarm for the coolant is required. If it is an open-loop cooling system, a coolant level low alarm must be used. I suggest you talk to the design firm.