How to operate the vacuum drying oven?
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First, the use of vacuum drying oven steps:
1, vacuum debugging:
1) First close the door and tighten the door handle in place;
2) Close the air release valve;
3) Open the vacuum valve;
4) Connect the vacuum drying box suction pipe and the vacuum pump with a random fitting vacuum connection pipe;
5) Turn on the vacuum pump power supply 6) Start pumping 2 and vacuum box commissioning 2. After the vacuum level is adjusted, the following operations can be performed:
1, first open the vacuum box power supply,
2. The PV screen displays the measuring temperature in the working chamber and the SV screen displays the temperature set at the factory;
3, AT and HEAT lamps on the temperature controller should be on, indicating that the instrument enters the warming working state.
3. Modify the setting temperature 1. Press the function key of the temperature controller. 2. After the modification is completed, press the SET button again, the PV screen will display the ST character, and set the timer time.
3. Press the SET button again to make the PV screen display the temperature of the studio and the SV screen to display the new set temperature.
4. If inert gas such as nitrogen is added during drying of the article, it should be noted in the contract that an intake valve should be added.
Fourth, the use of matters needing attention 1, the vacuum box enclosure must be effectively grounded to ensure safe use.
2. The vacuum box should be used in an environment where the relative humidity is less than or equal to 85% RH, there is no corrosive gas around, there is no strong vibration source, and there is a strong electromagnetic field.
3, vacuum box studio without explosion-proof, anti-corrosion treatment, shall not put easy, explosive, easy to produce corrosive gas items to dry.
4, the vacuum pump can not work for a long time, so when the vacuum degree reaches the dry goods requirements, you should first turn off the vacuum valve, and then turn off the vacuum pump power supply, when the vacuum is less than the dry goods requirements, then open the vacuum valve and vacuum pump power supply, continue to vacuum, This extends the life of the vacuum pump.
5, if the dry items such as damp, then the best filter between the vacuum box and the vacuum pump to prevent moisture gas into the vacuum pump, causing the vacuum pump failure.
6, dry items such as dry after changing to light weight, small size, should be vacuum in the working room plus septum net, to prevent damage caused by inhalation of dry vacuum pump 7, vacuum box after repeated use, will produce can not be pumped The phenomenon of vacuum, at this time should replace the door seal or adjust the box on the door buckle to solve the problem.
8. If the rubber valve of the air release valve is difficult to rotate, apply proper amount of grease to it.
9, in addition to maintenance, can not open the left box cover to avoid damage to the electrical control system.
10. The vacuum drying oven should always be kept clean. The door glass should not be wiped with a reactive chemical solution and wiped with a soft cotton cloth.
How to operate the vacuum drying oven? Through the detailed analysis of the engineers of Shanghai University, we believe that users should have a certain understanding of how to operate the vacuum drying oven.
11. If the vacuum box is not used for a long time, wipe the exposed plating parts with neutral grease to prevent corrosion. Put on the plastic film dust cover and place it in a dry room to avoid damage to the electrical components. use.