LEAIDAL MEDICAL ENGLAND
User Manual of Vacuum Drying Oven
LEAIDAL MEDICAL ENGLAND
I . Scope of application
It is suitable for drying and heating articles in vacuum conditions in the laboratories of
industrial and mining enterprises, colleges and universities and R&D institutions etc.
Make vacuum heating for articles in vacuum dry box. The vacuum dry box has
following advantages:@Could reduce the drying temperature, shorten the drying
time.QAvoid some articles heated oxide, dust particle damage and the heating air
kills the biological cells.
Il. Structure characteristics
The shape of vacuum dry box is horizontal type. The box body is make of
high-quality steel plate with pressing and welding processing. The surface of box
adopts plastic spraying treatment. Thermalprotective coating filled by alumina silica
wool. The box door is made od double toughened glass, whech could regulate the
open and close, degree of tightness of box door. The formed high-temperature
resistance silicon rubber sealing washer used between work room and glass door for
ensuring sealing between the box door and work room, which improved the vacuum
degree greatly. DZF type has square workroom..
II. Installation and debugging
1.Installation: Put the vacuum dry box at the place in the room with good air
conditions and without succession. There should no inflammable, explosive and
corrosive air in the surroundings od instrument.
2.Debugging
Close the box door and screw the handle. Close the return-air valve and open vacuum
valve, connect the airway at side of box body with vacuum pump by vacuum rubber
pipe, switch on the power of vacuum pump, begin to exhaust air. When the indicating
value of vacuum meter reaches to required value, close the vacuum valve and switch
of vacuum pump. At this time, it has vacuum condition in the box. It there is no
heating function, the debugging of vacuum dry oven is end.
Model No. Voltage Power Temper | Wave Vacu | Dimensions of | Capaci
(CV) (KW) ature motion | um workroom ty(L)
Range | degree of | degre (mm)
CC) | temperat |
ure
DZF6020 AC220V 0.3 RT+10~ +1% < 300x300x275 25
50Hz 200 133P
a
LEAIDAL MEDICAL ENGLAND
V. Usage
1, Put the articles need to be dried in the box, close the box door and screw the handle,
close the return-air valve and open the vacuum valve, connect the airway at side of
box body with vacuum pump through vacuum rubber, switchon the power of vacuum
pump, it begins to exhaust air. When the indicating value of vacuum meter reaches to
the required vacuum degree, close the vacuum valve, and then close the vacuum
pump, at this time, it is in vacuum condition in the box.
2. Switch on the power, turn it on, the indicating light is on, which means it works in
normal. The meter will display the temperature of workroom, then regulate the control
meter to the setting temperature, poen the heating switch, the workroom begins to
heat, the green light on the control meter is on, which means it is power on and
temperature is rising. After 60 minutes, constant temperature of instrument, the
display temperature should be in conformity with the setting temperature.
3. If you required lower temperature, for emample 60°C,you could adopt second
setting style, set 50°C at the first time, when the overshoot temperature fall after rise,
set 60°C at the second time, in this way, you could reduce or stop the overshoot
temperature.
4. Different articles with diferent humidity required different drying time. If longer
drying time required and the vacuum degree reduced, exhaust air and make vacuum
circumstances again and vacuum pump and then open the vacuum valve.
5. After finish drying, close the power firstly, open the return-air valve,make the air in
the box not in vacuum condition, open the box door and take the articles out. (In
vacuum conditions, the rubber ring and glass door absorbed tightly, not easy to open
the box door, after some time, open it easily).
6. In vacuum condition, the control temperature could not lower than 50°C. If it is
lower than 50°C,the value measured by standard thermometer is different with the
display value of meter, that is normal. It could not affect the temperature contro! and
precision when the temperature is higher than 50°C.
VI. Points for attention
1. The vacuum dry box must be grounding effectively for ensuring safety.
2. when the vacuum dry box don’t need to connect with air exhausting, close the
vacuum valve firstly, then close the power If vacuum pump, at the same time,
open air press valve of vacuum pump, otherwise the pump oil will flow backward
to the box.
3. When withdraw the treated articles, if it is inflammable, must put it in the sir when
the temperature cooling the lower then ignition point for acoiding the combustion
from reaction.
There is no emplosion protection equipment in the cacuum dry box. Don’t put the.
inflammable articles into it.
If the filter could be installed in the space between the vacuum box and vacuum
pump, avoid the damp air enter into the vacuum pump.