The symptoms before the explosion of the pressure cooker are that the air pressure valve does not deflate for a long time, the fusible valve does not melt, the pot ring does not leak, let alone drip, and the water is boiled for five minutes. The above situation shows that the pressure cooker is likely to explode.
That is to say, under normal use, only when the air outlet valve and safety valve are blocked and the pressure cooker is still heating, will the explosion occur, resulting in the pressure in the cooker exceeding the pressure that the pressure cooker can bear. It is worth noting that the dislocation of the plastic gasket in the lid of the pressure cooker will cause the pressure cooker to explode, and the fire is too strong or the handle of the pressure cooker is loose during use.
Matters needing attention in the use of pressure cooker:
1. When using the electric pressure cooker for the first time, be sure to read the instruction manual of the pressure cooker.
2. When using, be sure to carefully check whether the exhaust hole is unblocked and whether the hole under the valve seat of the safety valve is blocked by residual rice grains or other food residues.
3. Before cooking food, the handle of the pot cover must be consistent with the instructions of the pot body, otherwise the pot cover is not good, the pressure will not come up, or the pot cover will bounce up after the pressure comes up, which may easily lead to burns.
4. When in use, some people forcibly increase the weight on the valve body in order to increase the pressure in the pot and forcibly shorten the production time. This dangerous operation on the ordinary pressure cooker is of little use in the ordinary pressure cooker, because the electric pressure cooker is kept in a sealed state when working, and the pressure in the cooker is set by the pressure switch in the cooker. Increasing the weight of the valve body cannot change the pressure in the pot.
5. When using the pressure cooker to put food raw materials, the capacity shall not exceed four fifths of the internal volume of the cooker, and if it is an easily expandable food such as beans, it shall not exceed two thirds of the internal volume of the cooker.
6. During the heating process, remind everyone never to open the lid halfway to avoid food bursting and burning. Be careful not to remove the heavy hammer or pressure regulating device before confirming cooling, so as to avoid food splashing and hurting people. The cover can only be opened after natural cooling or forced cooling.
7. Check whether the rubber gasket is aging. Rubber sealing rings will age after a period of use. Generally speaking, the aging apron is easy to make the pressure cooker leak and needs to be updated in time.