Common faults and countermeasures of water bath constant temperature oscillator

Common faults and countermeasures of water bath constant temperature oscillators It is inevitable that problems will occur in the long-term use of water bath constant temperature oscillators
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It does not mean that there is a problem with the quality of the products produced by the manufacturer.
No matter what is used for a long time, there will be some small faults.
Although it will not affect the work for a while, if it is not dealt with in time, the small fault will evolve into Therefore, it is very important to learn some simple maintenance methods of water bath thermostatic oscillator by yourself
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1.
Faults that are prone to occur in the water bath constant temperature oscillator 1.
The temperature of the water bath constant temperature oscillator is not controlled
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Diagnosis: The relay is damaged or the sensor is damp.
Repair method: Open the side panel of the control box on the right side of the water bath constant temperature oscillator, and pull the sensor out of the water tank to replace it.
The easiest way to replace the relay is to replace the temperature control circuit board
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2.
The heating of the water bath constant temperature oscillator is normal, and the oscillation speed becomes slower
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 　　Diagnosis; 1.
The adjustable resistance on the speed control circuit board is displaced during the long-term operation of the water bath constant temperature oscillator
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 　　3.
The carbon brush of the transmission motor is worn
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 　　Maintenance method: 1.
Open the side panel of the water bath constant temperature oscillator control cabinet, turn on the power, set the temperature control to 0 degrees or below normal temperature (that is, not heating), turn on the oscillation switch, adjust the speed to high, and find the speed control board The two adjustable resistors on the top can be solved by slowly adjusting and adjusting the right one
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 　　2.
If the oscillation speed is still unsatisfactory, it is necessary to consider the transmission motor.
2.
The heating of the water bath constant temperature oscillator is normal, and the oscillation cannot work
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 　　Diagnosis: 1.
The transmission belt falls off, 2.
The transmission motor is faulty
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 　　3.
The transformer is broken.
4.
The eccentric wheel falls off
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 　　5.
The speed control circuit board is burned
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 　　Maintenance method: 1.
Check the transmission belt at the bottom of the water bath constant temperature oscillator
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 　　2.
Open the side panel of the water bath constant temperature oscillator control cabinet, turn on the power supply, set the temperature control to 0 degrees or below normal temperature (that is, not heating), turn on the oscillation switch, adjust the speed to high, and measure the transformer with a multimeter AC 250 Whether there is 220V voltage input, if not, the switch is broken.
On the contrary, measure whether the transformer has 12V voltage output (with AC 50V gear).
If not, the transformer is broken.
Do not replace the transformer easily at this time.
Most of the cases are the rectifier part in the circuit board.
Or the motor has a short-circuit fault (if this phenomenon occurs, the appearance of the transformer is scorched), after eliminating the above situation, it can be replaced
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12V voltage is normal, check whether there is DC 12 voltage (DC 50V gear), if not, the rectifier bridge is broken and replaced
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If there is, check whether there is voltage output to the motor (about 5-8V), or if the motor is broken.
3.
The water bath constant temperature oscillator oscillates normally, and the temperature of the instrument shows normal temperature.
Next, take out the water tank, use a wrench to unscrew the heating tube nut, and replace the heating tube.
The above is the introduction to the common faults of the water bath constant temperature oscillator and the countermeasures.
I believe that you will have a corresponding understanding of this after reading it.
helped
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