Precautions for Hot Air Circulating Drying Oven

Close the air switch of the circulating oven, set the heating temperature of 250℃, over-temperature alarm temperature of 260℃ according to the operating instructions of the oven, and start its automatic operation program after 1 hour of keeping warm time. The circulating fan, inlet fan, butterfly valve and heating of the oven Wait for the indicator lights to light up in sequence, indicating that the program is running normally. After heating and running for 2.5 hours, the temperature still does not reach the set value. If the heating time is too long, the heated glass container will be fragile and the product loss rate will increase. At the same time, it causes waste of energy and increases power consumption. In addition, the working cycle of the oven is lengthened, so that the process cannot be completed on time under the two-shift system of normal production positions, the process plan of the production task has been missed, and the production cost has been increased. It takes 2.5 hours to heat the temperature from room temperature to 250℃ when the tank is normally full, and it takes about 6 hours for a working cycle.