1. Load the test bottle and maintain balance. If it is a dual function model, set the oscillation mode.

2. Connect the power and set the timer according to the surface scale of the machine. If you need to work for a long time, adjust the timer to the "normally open" position.

3. Turn on the power switch and set the constant temperature:

(1) Place the control switch in the "Settings" section, and the temperature displayed on the screen will be the set temperature. Adjust the knob to set it to the desired temperature for your work. (The working temperature you set should be higher than the ambient temperature. At this time, the machine starts heating up and the yellow indicator light is on. Otherwise, the machine will not work.)

(2) Place the control switch on the "measurement" end, and the temperature displayed on the screen will be the actual temperature of the air inside the test chamber. As the temperature inside the chamber changes, the displayed number will also change accordingly.

(3) When heated to the desired temperature, the heating will automatically stop and the green indicator light will turn on; When the heat inside the test chamber dissipates below the temperature you set, a new round of heating will begin.