Solution For Ultrasonic Cleaning Machine Without Sound Wave Output

1. If there is no ultrasonic output, turn on the cooling fan of the ultrasonic generator to rotate
The problem is: Check if the power tube of the generator is burnt out. If the power tube is burnt out, you can observe whether the fuse of the generator power board is blown or blown. If it is burnt out, replace the power tube, fuse, and resistor. Ultrasonic cleaning machine maintenance
2. No ultrasound occurs, and the working indicator light of the radiator fan is also on
The problem is: check if there is a frequency output on the generator driver board, or disconnect the oscillator output line and use a multimeter to measure the output terminal of the generator (both ends of the output transformer). Set the voltage range to AC750V, and adjust the external potentiometer to see if there is a voltage of 180-240V. If there is a voltage of 180-240V, select the oscillator to check if there is a short circuit, and then use the multimeter to conduct the range. Measure if there is continuity, and check if the oscillator wire is broken and if the two wires are connected together or if the oscillator is short circuited.
3. If the air switch of the ultrasonic generator cannot be turned on, it will trip as soon as it is turned on
The problem is: check if there is a short circuit in the generator power line, check if there is a problem with the generator rectifier bridge (use the diode range of the multimeter), and measure if there is a short circuit in all four pins. If there is a short circuit, choose to replace it with a faulty rectifier bridge.
4. The ultrasonic generator operates normally and the power cannot be adjusted
The problem is: check if there is a problem with the thyristor, and then measure the continuity of the multimeter to see if there is a short circuit on the three pins of the thyristor. The main check is whether the coarse two pins of the thyristor are connected, and if they are reversed, replace them.
5. No ultrasound output
The problem is. If the generator indicator lights up and the fan also turns, there is a frequency display. If there is no output, check if the thyristor is damaged. If not, check if the thyristor control part is normal. Check if the generator driver board 7812 has a 12V regulated output. If so, check if there is a problem with the 772 in the thyristor control section of the startup board. If so, replace it.
6. There is ultrasound, the ultrasound sound is very abnormal, and the ultrasound intensity is poor
〔1〕 Use a frequency meter to check if the output frequency is within the working frequency range of the transducer (frequency 28KHZ transducer should be between 27KHZ-31KHZ, 40KHZ transducer should be between 38KHZ-42KHZ). If the difference is too large, the normal operating frequency can be restored by adjusting the frequency potentiometer. Ultrasonic cleaning machine maintenance.