There are more or less situations in the use of the equipment, some of which have nothing to do with the safety problems, so the sterilization equipment can't work. It's only related to the safety problems. It's the common fault problems in the use of the sterilization kettle. Let us know that when we encounter the emergency of water and steam leakage in the sterilization kettle, please don't immediately relieve the pressure (for example, the pressure drops sharply when the temperature is above 80 ℃, There will be product deformation or blowout, etc.). Follow the following steps:

1. Warming stage

In case of water leakage, stop the machine immediately, manually draw the hot water back to the high-temperature cylinder, turn on the cold water to cool down (at the same time, slowly relieve the pressure synchronously with the cooling down), take out the product and move it to other sterilization kettle to sterilize again, so as to avoid wasting hot water; In case of steam leakage, if the temperature does not reach above 80 ℃, it can be shut down (synchronous cooling and pressure relief) and then moved to other sterilization kettle to continue sterilization. If the leakage is small and the temperature is close to constant temperature, the steam can be turned on manually to raise the temperature to 121 ℃ for constant temperature. After sterilization, the product can be taken out by cooling and pressure relief. Inform the maintenance.

2. Constant temperature stage

If there is water leakage and the liquid level is insufficient (the standard water level is 170cm, but the actual level is 140cm), it is suggested to continue to carry out the process. After completion, isolate the products, inform QC for sampling inspection, and the QC department shall provide the treatment scheme (scrap or re sterilization or direct packaging for shipment); Find out the abnormal points and inform the maintenance. The empty kettle can be put into production only after the operation is OK. In case of steam leakage, the autoclave can not maintain the constant temperature. Method 1: manually open the steam valve to make the temperature return to the process temperature to continue sterilization. After the constant temperature is over, switch back to automatic cooling and pressure relief, isolate the product, notify QC for sampling inspection and wait for QC to notify for treatment; Method 2: stop the machine, manually cool down and relieve the pressure, take out the product and move it to other autoclaves to continue sterilization (you can jump directly to the constant temperature stage), isolate the product after the end, inform QC for sampling inspection and wait for QC to notify for treatment. Inform the maintenance department to deal with the steam leakage fault, and use it after repair.

3. Cooling stage

In case of leakage in the process of pressure relief, continue to carry out and take out the product normally. No isolation is required. Inform the maintenance department to deal with the abnormal points. After maintenance, the empty kettle can only be used after the operation is OK.

The safety valve suddenly failed. When encountering overpressure and the safety valve is not opened, manually pull the handle of the safety valve to recover and relieve the pressure.

Treatment: in the process of sterilization, whether in the sterilization stage, if the pressure is too high, it can be operated manually, and the handle of the safety valve can be opened manually for pressure relief. Note: the operation needs to be slow down to the required pressure of the process. If in the constant temperature stage, the sterilization operation can be continued manually; Such as in the cooling stage, that is, pressure relief cooling (synchronous) can be; For example, in the heating stage, depressurize and cool down (simultaneously), cool the product and move it to other autoclaves for re sterilization; Inform the maintenance department to handle the safety valve. After repair, the empty kettle can only be used after normal operation.

When the equipment needs to be cooled manually under special circumstances, a certain positive pressure must be ensured in the pot to prevent the steam in the pot from condensing rapidly and generating negative pressure at the moment of cold water entering, resulting in the collapse of the pot. At present, the actual operation of the staff: the above situation can only appear in the products after constant temperature, such as the temperature in the sterilization kettle is 121 ℃, the pressure in the kettle is 0.20mpa, and the temperature needs to be manually lowered to 41 ℃ under normal pressure. First of all, the hot water inside the autoclave is pumped back to the high-level hot water tank, and the pressure inside the autoclave remains unchanged. At this time, open the cold water valve to reduce the temperature. At the same time, manually operate the pressure relief valve, one open and one close operation mode, so that the temperature and pressure of the products in the autoclave decrease synchronously. When the temperature is reduced to 80 ℃ and the pressure in the kettle is lower than 0.10MPa, the temperature and pressure can be reduced quickly.