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Common trouble shooting of ultrasonic wave in mask machine

Common trouble shooting of ultrasonic wave in mask machine

Common trouble shooting of ultrasonic wave in mask machine

Information

In the tough February, busy March and catch-up April, the domestic mask machine is conservatively estimated that about 75% of the equipment has been put into operation. Some time ago, the popularity of mask machine caused a sharp shortage of debugging personnel. By the end of April, about one third of mask machines were still in the state of debugging, some of them were not opened. With the passage of time and the growing team of debugging masters, most of the masks have started to operate. Recently, there are many problems of ultrasonic fault. The frequency of ultrasonic fault is much higher than that of other faults. At the request of all netizens, the analysis and solutions of common ultrasonic faults are summarized as follows for reference only:

1: The welding effect of the white film is not ideal. Press the ultrasonic testing button to hear the squeal.
Cause analysis: there are problems in the assembly of ultrasonic transducer system.
2: Turn on the power switch of the respirator, the ultrasonic power indicator is not on, and there is no action.
Cause analysis:
A. The power cord of the respirator is in poor contact with the power socket;
B. The power fuse of the mask machine is burnt.
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3: Turn on the power switch of the mask machine and you will hear a faint scream.
Cause analysis: 1-2 power tubes on the ultrasonic circuit board were burnt out.
4: The welding effect of the mask machine is not ideal, but the overload indicator is not on and the ultrasonic output is weak.
Cause analysis:
A. The 24V power supply of ultrasonic power transformer is abnormal, and the relay does not operate;
B. The three terminal voltage regulator lm7824 on the ultrasonic program board is damaged.
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5: Turn on the power switch of the mask machine, the power indicator is on, but there is no action. Press the ultrasonic test button to have ultrasonic output.
Cause analysis:
A. The five core wire connecting the base and the frame is open;
B. Machine program board failure.

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