Installation and commissioning of vacuum drying oven and attention to use
installation:
The vacuum drying oven should be placed in a room with good ventilation and no strong vibration, and no flammable or explosive materials should be placed around it.
debugging:
(1) Close the door and tighten the handle, close the bleed valve, and open the vacuum valve.
(2) Connect the air pipe on the side of the vacuum drying box with the vacuum rubber tube and connect the vacuum pump to the vacuum pump to start pumping. When the vacuum gauge indicates -0.1 MPa, turn off the vacuum pump and the vacuum pump. vacuum state, without heating requirements, the end of vacuum drying oven debugging.
(3) If there is a set temperature, the heating indicator lights up and begins to enter the heating temperature rise state. When the display temperature approaches the set temperature, the heating indicator light flashes and goes out repeatedly, the temperature control enters the constant temperature state, and the vacuum drying oven works. normal.
Note:
1. Donghao instrument vacuum box housing must be effectively grounded to ensure safe use.
2. The vacuum box should be used in an environment where the relative humidity is ≤ 85% RH, there is no corrosive gas around, no strong vibration source and strong electromagnetic field.
3. The vacuum box studio is not treated with explosion-proof, anti-corrosion, etc., and it is not allowed to dry items that are easy, explosive, and prone to corrosive gases.
4. The vacuum pump does not work a long time, and therefore when the degree of vacuum to dry the article in claim vacuum valve should be closed, then power off the vacuum pump until the degree of vacuum is less than the required drying items, and then open the vacuum valve and pump power, continue vacuuming This will extend the life of the vacuum pump.
5. If the dry items are wet, add a filter between the vacuum box and the vacuum pump to prevent moisture from entering the vacuum pump, causing the vacuum pump to malfunction.
6. Dry items should be light weight and small in size (small granules) after drying. Vacuum should be added to the working chamber to prevent the vacuum pump (or solenoid valve) from being inhaled by the dry matter.
7. After the vacuum box is used for many times, it will not be able to vacuum. In this case, the door seal should be replaced or the door buckle on the box should be adjusted to extend the distance. When the drying temperature of the vacuum box is higher than 200 °C, it will produce slow air leakage (except 6050, 6050B, 6053). At this time, remove the back cover of the box and loosen the heater base with an Allen key to change the sealing ring or Tighten the heater base to solve.
8. If the rubber plug of the bleed valve is difficult to rotate, apply a proper amount of grease to the inside. (such as Vaseline)
9. Except for maintenance, the left side cover (except models 6090 and 6210) cannot be removed to avoid damage to the electrical control system.
10. The vacuum box should always be kept clean. Do not wipe the door glass with a reactive chemical solution and wipe it with a soft cotton cloth.
11. If the vacuum box is not used for a long time, wipe the exposed plating parts and apply neutral grease to prevent corrosion. Put on the plastic film dust cover and place it in the dry room to avoid damage to the electrical components. use.
12. Anomalies occur during use, please cut off the power and get in touch with our company in time.
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