Pressure steam sterilizer

Large steam sterilizerSterilization is the process of placing the items to be sterilized in a sealed, pressurized sterilization pot. By heating, the water in the sterilization pot compartment boils to produce steam. The steam rapidly exhausts the cold air in the pot from the exhaust valve, and then the exhaust valve is closed to continue heating. At this point, since the steam cannot overflow, the pressure inside the sterilizer increases, resulting in an increase in boiling point and a temperature above 100 ℃. Causing coagulation and denaturation of bacterial proteins to achieve sterilization.

How to deal with heating faults in high-pressure sterilizers:

1. Fault: When using the high-pressure sterilizer, the heating function fails, resulting in the inability to generate steam normally. When the high-pressure sterilizer is running, the heating indicator light on the panel is on, but the temperature indicator does not rise, and the high-pressure sterilizer remains at room temperature.

2. Solution: Open the side panel of the high-pressure sterilizer, and the panel displays normally, indicating that the 220V power supply has entered the control circuit normally. Remove the wires connected to the heating tube and use a multimeter to check the resistance of the heating tube. Generally, the resistance is between 8-15 Ω. If the resistance is too high, it indicates an internal open circuit in the heating tube and needs to be replaced. Since there is a reason for the burnout of the heating tube of the high-pressure sterilizer, regardless of whether the heating tube of the high-pressure sterilizer is good or bad, the solid-state relay controlling the heating tube of the high-pressure sterilizer should be checked first. When the high-pressure sterilizer is powered on, the input voltage of its relay should be around 12vDC, and the output voltage should be around 220VAC. If the input of the high-pressure sterilizer is normal but the output is abnormal, this relay must be replaced; If the input of the high-pressure sterilizer is abnormal, the load output control part on the control circuit must be checked.