operation instructions of welding wire oven
TRANSCRIPT
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7/26/2019 Operation Instructions of Welding Wire Oven
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Purpose
The highest working temperature of type LA704 digital display welding wire oven is 500. It is
suitable for baking, drying oven on heat treatment or other heating. And it is also a regular
instrument in laboratories.
The working temperature of the oven can be from the room temperature to the highest
temperature, a working temperature can be selected randomly within this range. After the
selection, the temperature can be kept constant by the automatic controlling system in the oven.
In the working chamber of type LA704 welding wire oven, it makes convection by the specific
gravity of the cold and hot air, thus makes the temperature in the chamber even.
The structure of this oven is precise, the temperature control is sensitive and accurate, and the
operation is easy. It is suitable for industrial mining and the scientific research units ofuniversities and colleges etc.
The type LA704 digital display welding wire oven adopts the latest digital display instrument for
temperature measuring, and the temperature control is sensitive, accurate and clear.
Structure
The oven is made of thin steel sheets, fiberglass is inserted between the working chamber and
outer plate of the oven as thermal insulation, there is a seal ring embedded in the door.
The cold air in the working chamber can convent if the exhaust valve on top of the oven is open,
the temperature is controlled constant automatically by digital display instrument. All the
electric appliances are installed in the control layer at the side of oven. The control layer has a
side door which can be demounted, for inspection or wire repair.
The electric heater is installed in the working chamber of the oven, at left, right and bottom; it is
totally divided into two sets, namely Low temperature, High temperature. And there is an
indicator light; it means the electric heater is working if the light is lit, and the heating is stopped
if the light is off.
Cautions:
1. When the power is connected, the 2 sets of heating switches can be turned on, at this
moment the temperature in the oven starts to rise, the indicator light is lit.
2. Regarding the LA704 welding wire oven, when the temperature rises to the desired degree,
the temperature may still rise when the constant temperature just begins, this is because of the
waste heat. It will be stable in about half an hour. During the constant temperature process, the
temperature will be controlled automatically by the temperature controller in the oven, without
manual operation.
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7/26/2019 Operation Instructions of Welding Wire Oven
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3. Regarding the type LA704 welding wire oven, when the above mentioned preparation is ready,
turn the switch on the panel of the digital display instrument to the desired working temperature
(observe the instrument display), then the work may start.
4. One set of heating switches can be turned off while one set of electric heaters is left for
working when the temperature is constant, for avoiding over-power which may affect the
sensitivity of constant temperature.
5. The outer door can be opened when you want to observe the testing material in the working
chamber. But its better not to open the door of oven frequently, for the sake of constant
temperature.
6. The oven shall be put in a leveled place indoor.
7. A knife switch with iron shell shall be installed in the power supply line, which is exclusively forthis oven, and the outer plate shall be grounded.
8. The electric performance of this oven shall be checked prior to power connection, and be
cautious whether there is short-circuit or leakage.
9. When everything is OK, the sample(s) can be put in, close the door of the oven, and turn on
the exhaust valve, the spacing is about 10m/m.
10. The connection cannot be disturbed or altered. The side door can be demounted only when
the oven goes wrong, check it step by step along the connection. Please contact our factorywhen there is major failure.
11. This oven is not an explosion-proof drying oven, therefore the materials which are
combustible or volatile must not be put into this drying oven, for preventing explosion.
12. Each unit of the drying oven is attached with two sample shelves. The average load of shelf is
15kg. The samples shall not be put over crowded or overloaded for the sake of cold and hot air
convection. Meanwhile, no samples can be put on the radiator plate at the bottom of the
working chamber, for avoiding overheat which may damage the samples.
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