The MRC 200+ X-Ray tube generates significant heat during long interventional procedures. If the "Tube Heat" indicator on the Azurion TSM reaches 90%, the system will trigger a visual warning. If it hits 100%, the system will temporarily lock out X-ray production to prevent permanent damage to the anode. If this happens mid-procedure, the first step is to switch the system to "Low Dose" or "Pulsed" mode to allow the cooling unit to catch up without stopping the imaging entirely.
If the tube is overheating despite low usage, inspect the CryoSafe Cooling Unit located in the equipment room. Check the coolant levels and ensure the filters aren't clogged with dust. A common cause of overheating is actually the room’s HVAC system; if the ambient temperature in the OR rises above 22°C (72°F), the X-ray system’s heat exchangers cannot operate at peak efficiency.
To reset the alert once the tube has cooled, navigate to the "System Status" page on the Azurion console. If the heat percentage has dropped below 70%, the "X-Ray Ready" light should turn green. If the alert remains despite a cool tube, there may be a faulty temperature sensor in the housing, requiring a Field Service Engineer to perform a sensor bypass and recalibration.
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