How to use one cubic meter of formaldehyde emission test chamber？

What should I pay attention to when using the formaldehyde test chamber?
1. Open the water tank filling valve cover, add water to the designated water level of the dew point water tank and the temperature water tank, and turn on the switch;

2. Insert the power plug of the device into a power socket larger than 16A;

3. Turn on the "Start" button on the box, and there is a display screen on the meter. If there is no buzzer or alarm after 5 seconds, the water level is normal;

4. Adjust the scale of the gas flow meter to a flow rate of 1m3/H and observe the water level in the glass tube of the dew point water tower. Generally, when the water pump and the air pump are working at the same time, the water level will be in a relatively stable state and keep this state;

5. Click the "light switch" to select the lighting to observe the working status in the box;

6. The water in the temperature-controlled water tank is changed every 2 months, and the water in the dew point water table is changed every 1 month (distilled water or deionized water)

7. Do not store or use the equipment in a sub-zero environment. If it must be placed in a sub-zero environment, all water in the equipment (pipeline, heat exchanger, water pump, water tank, water tower) must be drained.