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The water bath constant temperature oscillator is also a very common experimental instrument. Its operation is very simple and easy to use. However, in the market, there will be some problems. Let me introduce to you how to solve several problems frequently encountered in electromechanical work. .
1. The water bath constant temperature oscillator heats up normally and the oscillation speed becomes slower.
Solution: Open the side panel of the control cabinet, turn on the power, set the temperature control to 0 degrees (ie, no heating state), turn on the oscillation switch, adjust the speed to the highest, and find the two adjustable resistors on the speed control board. Adjust the right side counterclockwise to solve.
2. The water bath constant temperature oscillator is not heated and the oscillation is normal.
Solution: First determine whether the heating tube is damaged. If it is damaged, it needs to be replaced. Then it is judged whether the temperature control part is damaged. If it is damaged, it needs to be replaced.
3, the water bath constant temperature oscillator is heating normally, the oscillation can not work.
Solution: Open the side panel of the control cabinet, turn on the power, set the temperature control to 0 degree (ie, no heating state), turn on the oscillation switch, adjust the speed to the highest, use the multimeter AC 250 to measure the transformer with or without 220V voltage input. If not, the switch is broken. Conversely, the transformer has 12V voltage output (using 50V AC). If no transformer is broken, do not replace the transformer easily. This situation is mostly caused by short circuit fault in the rectifier part of the circuit board or the motor. (This phenomenon occurs, the appearance of the transformer has a burning phenomenon), in the above case, replace it. The 12V voltage is normal. Check if there is DC 12 voltage (DC 50V). If there is no rectifier bridge open, replace it. If there is any voltage output to the motor (about 5-8V), if the motor is bad or the instrument is not used for a long time, the mechanical part is rusted, and the high power tube in the control board is not broken. The above method can basically solve the non-oscillation situation.
When you encounter a simple fault, you must first learn to determine the cause of the malfunction, carry out the right medicine, and use the simplest method to eliminate the fault. If you can't solve it, please contact our factory or find a professional electrician for repair.
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