What is the situation that the ultrasonic cleaner always has ultrasound? Let s talk about common fai

1. There is ultrasound, the ultrasonic sound is very abnormal, and the ultrasound strength is not safe.

Use a frequency meter to check whether the output frequency can be within the frequency limit of the transducer task (the frequency of 28kHz transducer should be 27kHz-31kHz, and the frequency of 40kHz transducer is 38kHz-42kHz). If the difference is too great, the normal task frequency can be restored by conditioning the frequency potentiometer. Ultrasonic cleaner repair.

2. There is no ultrasonic wave and no output, and the ultrasonic generator heat dissipation fan is turned on.

Reflect whether the power tube of the initiator can be burned, if the power tube is burned, you can check whether the fuse of the power board of the emitter can be blown or burst. If it is burned, the power tube and safety are replaced. Resistance.

3. The normal power of the ultrasonic emitter task is not as good as conditioning.

To see if there can be a problem with the thyristor, the multimeter conduction gear is measured to see if the three pins of the thyristor can have a short circuit, and the most important thing is to see whether the thickest two pins of the thyristor can be turned on.

Fourth, there is no ultrasonic generator heat dissipation fan task refers to the ultrasonic cleaning machine indication is also bright.

1. See if there is a frequency output on the generator drive board, or disconnect the output line of the oscillator with a multimeter to measure the output end of the generator (the output transformer is energized at both ends) and take the voltage gear AC750V, adjust the external potentiometer to the maximum to see if there can be a voltage of 180 240V, if there is a voltage of 180 240V, choose to see if the oscillator can be short-circuited, and the multimeter conducts the gear. Measure whether it can be turned on, such as the conduction and choose to reflect on whether the oscillator wire can be broken and lost, and whether the two wires are connected together or the oscillator is short-circuited.

Fifth, the ultrasonic generator can't be turned on empty, and it will trip as soon as it is opened.

See if there can be a short circuit in the power cord of the emitter, whether there can be a problem with the rectifier bridge (take the multimeter diode file) and measure whether the four feet can have a short circuit.

Sixth, no ultrasound, no output.

If the number of trigger indicator lights is reached, the fan also turns, and there is a frequency display. If not, reflect on whether the thyristor can be normal, and see if the trigger driver board 7812 can have a 12V regulated output. If there is, or see if there is a problem with the 772 of the launchpad thyristor moderation part.

If so, it will be replaced.

It's normal to have thoughts.

1. Common faults of ultrasonic cleaners.

1. Insurance damage. If you find that there is no power display and no action after starting, you should first see whether the insurance in the power socket is damaged. It may be that the user is connected to the ground wire of the spike wheel and the live wire or the neutral wire, and there is no grounding (the ground wire of the machine is connected to the shell of the machine), and it may be that the machine is short-circuited, and the components are aging and the short-circuit phenomenon is present, resulting in damage to the insurance.

2. The transducer is damaged. It may be that the temperature will gradually rise due to the long-term use of the machine, which may cause the colloid to melt and the transducer to fall off or the transducer ceramic to break partially.

3. The power tube is damaged. The power tube on the motherboard will be short-circuited due to the long-term uninterrupted use of the machine or too little cleaning liquid.

4. The stabilizer tube is damaged. The damage of the stabilizer tube is generally caused by the start-up after the resistance of the power tube is small or short-circuited, and it is rarely damaged.

5. Damage to the control board (adjustable ultrasonic cleaner). Long-term continuous work is related to the aging of components, and sometimes it is related to the penetration of cleaning liquid.

6. Damage to inductance and isolation transformer. Due to the long-term operation of the machine, the inductance and transformer belong to the heat dissipation components, which may melt and burn out due to excessive temperature, resulting in a short circuit.

2. Daily maintenance of ultrasonic cleaner.

1. Insurance damage. Take out the insurance**, whether there is a break, use the multimeter to measure whether it is disconnected, and replace the new device.

2. The transducer is damaged. Use a shake meter to measure the dielectric strength of the transducer, the dielectric strength is less than 200m can no longer be used, and a new transducer must be replaced. The internal ceramics of the transducer can also break due to long-term use, making it unable to function properly.

3. The power tube is damaged. When the power tube is connected on the motherboard, use a multimeter to measure the resistance value of the pins on both sides of the power tube, which should be about 22 under normal circumstances. After removing the power tube (disconnected from the motherboard), the measurement pins should be impassable.

4. The stabilizer tube is damaged. Depending on the diode characteristics, it is forward and reverse is turned off. Measured with a multimeter diode file, the forward resistance is about 70, and the reverse is reversed. If the value deviation is too large or the forward resistance value is also the same, replace the new regulator tube.

5. Damage to the control board (adjustable ultrasonic cleaner). When the machine is not working, disconnect the control board from the motherboard. Powering on the motherboard, if the machine is working, it means that the control board is damaged and needs to be replaced.

6. Damage to inductance and isolation transformer. In most cases, the damage of inductors and transformers can directly see the traces of burnout, and replace the new devices.

Summary. There are many types of regular benchtop ultrasonic cleaners and their functions are different, but their common faults are also similar. If the user encounters some common faults and other situations during use, then they can solve it by themselves without hiring maintenance personnel.

The following is a brief description of the common faults and solutions of the desktop ultrasonic cleaner:

Regular benchtop ultrasonic cleaners have many types of slippery samples and different functions, but their common faults are similar. If the user encounters some common faults and other situations in the process of use, then he can solve the hunger of the tomb by himself without hiring Sun to hire maintenance personnel. The following is a brief description of the common faults and solutions of the desktop ultrasonic cleaner:

Find out in detail that there are parts in the circuit that change with temperature and are about to fail, so they cause short circuit tripping. It is recommended to find a professional to repair it

Is there a problem with the electronic components of the control board or the components of the working board?

If you find a professional master, everything will be ok.

**There is a professional master to find it.

Ultrasonic cleaner refers to the cleaning agent added to ultrasonic cleaning, which can make ultrasonic cleaning more efficient and effective.

Ultrasonic cleaners generally have the following advantages.

1.In ultrasonic cleaning, the cleaning effect is even better.

2.It can further improve the efficiency of ultrasonic cleaning, shorten the cleaning time, and improve production efficiency3By using ultrasonic cleaners, it is possible to effectively clean delicate parts, as well as dirt in small seams and hidden places.

4.There is no damage to the surface of the workpiece.

1. Operation guide.

1. Check the cleaning tank to ensure that there is an appropriate amount of water in the tank (the water level should be at least 200mm higher than the transducer box).

2. Add an appropriate amount of cleaning agent according to the process requirements.

3. Hang the power adjustment knob to the minimum position.

4. Close the power switch or plug the power cable into the power socket.

5. Turn on the power switch, turn the "power adjustment" knob to the required power value, and the ultrasonic cleaner starts to work.

6. When the work is stopped, turn the "power adjustment" knob to the minimum position and turn off the power switch.

2. Maintenance.

1. If the equipment is not used for a long time, please drain the cleaning solution and clean the cleaning tank.

2. If the device is not used for a long time, please turn on the device once a month according to the operation guide and work for half an hour.

3. If there is any technical failure, please notify us immediately.

3. Warning. 1. It is strictly forbidden to start the machine without water in the cleaning tank.

2. It is strictly forbidden to start directly with high power.

3. If the concentration of corrosive gas on site is high, please keep the ultrasonic system away from the cleaning tank as much as possible.

4. Within 30 minutes of the start-on state and shutdown, it is strictly forbidden to touch the electronic components in the generator, and there is high-voltage electrical energy stored in the capacitor.

1. First of all, the commercial ultrasonic cleaner should be placed in a stable and ventilated place, and the power should be turned off every time the water is filled and drained and the commercial ultrasonic cleaner is maintained, and the socket needs to be unplugged in time after use.

2. Do a good job of occupational protection. After the daily operation of the commercial ultrasonic cleaner, you need to wipe the surface and inner cavity of the instrument with a clean and wrung out soft cloth, and wear acid and alkali resistant gloves when removing rust and scale. Care must be taken to avoid using steel wool balls or hard brushes to avoid damage to commercial ultrasonic cleaners.

3. Regularly remove scale and rust in the inner cavity of the commercial ultrasonic cleaner, and the preparation ratio of descaler or rust remover should be strictly in accordance with the instructions for use, and in accordance with the relevant process of descaling and rust removal: turn off the power Drain the water in the inner cavity Close the drain valve Wipe with the corresponding proportion of descaler or rust remover solution Rinse the descaler or rust remover with clean water After the stagnant water is drained, wipe dry with a clean cloth.

4. Regularly check whether the valve of the commercial ultrasonic cleaner is working normally, and the inspection method refers to the manufacturer's instructions. In addition, it is necessary to calibrate the temperature sensor of the instrument every year (to be completed by the relevant maintenance personnel).

Place it in the tank to start, wash it and take it out.

Shanghai Baptist has been focusing on hydrocarbon cleaning machines for 16 years.