Necessary conditions for safe use of hot air circulation oven:
The hot air circulation oven is composed of angle steel, stainless steel plate and cold steel plate. The insulation layer is filled with high-density aluminum silicate cotton, which ensures the thermal insulation of the drying box and the safety of users. Heater mounting positions can be bottom, top or both sides. Use a digital display smart meter to control the temperature. There are two types of air duct design for hot air circulation oven: horizontal air supply and vertical air supply!
Product features: The shell is made of high-quality cold-rolled steel plate, and the surface is electrostatically sprayed, which has a novel appearance and is durable. The studio is made of high-quality stainless steel plate or cold-rolled steel plate, which has the advantages of high temperature resistance, corrosion resistance, and no black smoke. The movable pull-out grid increases the storage space of the materials in the box. There is a double-layer tempered glass observation window in the middle of the box door, which can observe the heated items in the working room at any time. The hot air circulation oven is a device that uses the electric heating wire compartment to heat the object to dry.
It is suitable for baking, drying, heat treatment, etc. in the range of 5~300°C higher than room temperature (some 200°C higher), and the sensitivity is usually ±1°C. It has many models, but the basic structure is similar, generally composed of three parts: the box body, the electric heating system and the automatic temperature control system. Its use and precautions are summarized as follows:
1. The hot air circulation oven needs to be placed in a dry and horizontal place indoors to prevent vibration and corrosion.
2. Pay attention to the safe use of electricity, and install a power switch with sufficient capacity according to the power consumption of the hot air circulation oven. Choose enough power wires, and should have a good grounding wire.
3. For the mercury thermometer type thermostat with electric contact, the two wires of the electric contact thermometer should be connected to the two terminal posts on the top of the box respectively. Insert an ordinary mercury thermometer into the exhaust valve, (the thermometer in the exhaust valve is used to calibrate the electric contact mercury thermometer and observe the actual temperature in the box) and open the hole of the exhaust valve. Adjust the electric contact mercury thermometer to the desired temperature and tighten the screws on the steel cap to achieve constant temperature. But be careful not to turn the indicating iron out of the scale when adjusting.
4. When all preparations are ready, put the sample into the hot air circulation oven, then connect and turn on the power, the red indicator light is on, indicating that the oven has been heated. When the temperature reaches the controlled temperature, the red light is off and the green light is on, and the constant temperature starts. In order to prevent the temperature control from malfunctioning, it also needs to be looked after.
