Use of drying oven and thermostat and matters needing attention
Use and precautions of drying oven and thermostat:
The drying box is used for drying and dry heat sterilization of articles, and the incubator is used for the cultivation of microorganisms and biomaterials. The structure and usage of these two instruments are similar. The temperature range of the oven is 50~250℃, and the air blast electric heating is often used to accelerate the temperature rise. The maximum working temperature of the incubator is 60℃.
1. Use
(1) Insert the thermometer into the seat (in the middle of the deflation regulator at the top of the box).
(2) Insert the power plug into the power socket.
(3) Turn the heating wire at the beginning of grouping to the position of 1 or 2 (depending on the required temperature). At this time, the blower can be turned on to promote hot air convection. At the beginning of grouping, when the heating wire is turned on, the red indicator lights up.
(4) Pay attention to the thermometer. When the temperature of the thermometer is about to reach the required temperature, adjust the automatic temperature control knob to make the green indicator light just flash. Observe the thermometer and indicator light after ten minutes. If the temperature indicated on the thermometer exceeds the requirements and the red indicator lamp is still on, turn the automatic temperature control knob slightly counterclockwise until the temperature is constant at the required temperature, and the indicator lamp will display red and green in turn. The thermostat knob is on the top left in front of the box. Its scale plate can not be used as a standard indication of temperature, but only as a mark of adjustment.
(5) In the process of constant temperature, if three groups of heating wires are not needed to be heated at the same time, only one group of heating wires can be connected. The more open groups there are, the faster the temperature rises.
(6) After working for a certain period of time, you can open the air release regulator at the top center to discharge moisture, or turn on the blower.
(7) After use, turn off all the electric heating wire grouping switches and turn the automatic thermostat knob counterclockwise to zero.
(8) Unplug the power plug.
2. Preventive measures
(1) Check the power supply before use and have a good grounding wire.
(2) There is no explosion-proof equipment in the drying box. Do not put flammable and volatile items in the oven for heating. Flammable articles shall not be placed near the box.
(3) The box should be kept clean, and the net should not rust, otherwise it will affect the cleanliness of glassware.
(4) It should be monitored regularly during use, so as to avoid temperature fluctuation affecting the use effect or accidents.
(5) The motor shaft of the blower should be refueled once every six months.
(6) Don't twist the temperature sensor in the box, and avoid colliding with the temperature sensor when placing articles, otherwise the temperature will be unstable.
(7) Cut off the power supply during maintenance.