Benchtop vacuum drying chamber usage steps.

First, the use of environmental requirements: 1.
Temperature: 5 ~ 40 °C 2 Relative humidity: ≤85% RH 3.
Supply voltage: AC220V±10% 50Hz 4.
There is no strong vibration and corrosive gas around the impact of the second, vacuum debugging: 1.
Close the door and screw the door handle in place, close the vent valve (so that the hole on the rubber plug and the hole on the vent valve are torsionally deflected 90°) Open the vacuum valve (rotate 90° counterclockwise) * The use of the vacuum valve may be tight, and the force can
。
2.
With the random accessories vacuum connection pipe (inner diameter: Φ16mm wall thickness: 10mm) the vacuum drying box extraction pipe (outer diameter: Φ16mm) and the vacuum pump (2X-2 type, intake outlet outer diameter Φ16mm) are firmly connected (6090 and 6210 models are connected).


Turn on the vacuum pump power, start pumping, when the vacuum gauge indicator value reaches -0.
1Mpa, first close the vacuum valve and then close the vacuum pump power supply to prevent the vacuum pump oil from flowing back to the studio, (6090 and 6210 type no vacuum valve, can directly close the vacuum pump power supply on the panel) At this time, the box is in a vacuum state
.

Third, vacuum box debugging: after the vacuum degree of debugging, you can do the following operations: 1.
open the vacuum box power, at this time the power indicator light should be on (6090 and 6210 models should be opened again respectively) the thermostat power self-test, PV screen display the measurement temperature in the studio, SV screen shows the temperature
set at the factory.

The lamp such as RUN and HEAT on the temperature controller should be on, indicating that the instrument has entered the working state
of heating.

2.
Modify the set temperature 1) Press the function key (SET) of the thermostat; After the PV screen displays the SP character, you can use the , key to modify the setting temperature (6090 and 6210 models should be set and modified for 2 and 3 meters respectively, the following similar).


2) After the modification is completed, press the SET key again, the PV screen displays the ST character, and sets the timing time
.

If you do not use the timing function, still let its ST=0 press the SET key again, so that the PV screen shows the studio temperature, and the SV screen shows the new set temperature
.

The instrument RUN and HEAT lights are on, and the instrument re-enters the heated working state
at this time.

3.
When the temperature in the working room is close to the set temperature, the HEAT lamp is suddenly on and off, indicating that the heating enters the PID adjustment stage, and the instrument sometimes measures the temperature over the set temperature, and sometimes it is normal to be lower than the set temperature
.

When the measurement temperature is close to or equal to the set temperature, after 1 to 2 h, the studio enters a constant temperature state, and the item enters the drying stage
.

4.
When the required temperature is low, the secondary setting method can be adopted, such as the required working temperature of 70 °C, * first set 60 °C, wait for the temperature overshoot to start falling, and then set 70 °C twice, which can reduce or even overshoot the phenomenon, as soon as possible into a constant temperature state
.

5.
When the item is dried, turn off the power supply, if the acceleration of cooling, then open the valve to make the vacuum degree 0, wait about 5 minutes and then open the door
.

Fourth, if the humidity of the dry matter in the workshop is large, the water vapor generated will affect the performance of the vacuum pump, built between the drying box and the vacuum pump, and a "dry / filter"
is inserted.

Our company can be equipped with a dryer with an external dimension of Φ120×300mm and an interface outer diameter of Φ16 on demand
.

Fifth, if in the process of drying the goods, it is necessary to add inert gases such as nitrogen, it should be noted in the contract that an intake valve
should be added.