KN95 folding mask machine is wolkon's fully automated mask machine. Next, I will take you to understand the faults and maintenance of N95 mask machines.

1. Turn on the power switch of the N95 mask machine. The ultrasonic power indicator light of the mask machine does not light up and there is no action. Reasons for the failure:

1. The power cord of the mask machine is in poor contact with the power socket;

2. The power fuse of the mask machine is burned out.

2. Turn on the power switch of the N95 mask machine, the power indicator light is on, but there is no action. Press the ultrasonic test button of the mask machine and there is an ultrasonic output failure reason:

1. The five-core wire connecting the base of the mask machine and the frame is open circuit;

2. The machine program circuit board is faulty.

3. Turn on the power switch of the N95 mask machine. The power indicator light of the mask machine is on, but there is no action. Press the ultrasonic test button of the mask machine and there is no ultrasonic output. Causes of the fault:

1. Check whether the emergency stop switch of the mask machine is pressed;

2. The 110V or 24V power supply of the ultrasonic power transformer of the mask machine is abnormal;

3. The machine program circuit board is faulty.

4. The N95 mask machine operates, but there is no ultrasonic output when pressing the ultrasonic test button and the operation button of the mask machine. Reasons for the failure:

1. The 110V power supply of the ultrasonic power transformer of the mask machine is abnormal;

2. The 110V power cord of the ultrasonic circuit mainboard of the mask machine fell off.

5. The N95 mask function works normally when the test button is pressed. However, the machine does not operate when the mask machine operating button is pressed. Reasons for the malfunction:

1. The operating switch of the mask machine is damaged;

2. The five-core wire connecting the base of the mask machine and the frame is open circuit.

6. When pressing the ultrasonic test button of the N95 mask machine, the indicated value of the power load meter is greater than 20% and cannot be reduced through the tuner. Cause of the fault:

1. The ultrasonic transducer system of the mask machine failed; 2. The mechanical power tube burned.

7. The cause of the failure when the ultrasonic overload indicator light of the N95 mask machine comes on during welding:

The ultrasonic transducer system of the N95 mask machine failed.

8. The welding effect of the mask weldment is not ideal, but the overload indicator light does not light up during welding, and the ultrasonic ultrasonic output of the mask machine is weak. Reasons for the failure:

1. The 24V power supply of the ultrasonic power transformer of the mask machine is abnormal and the relay does not operate;

2. The three-terminal voltage regulator LM7824 on the ultrasonic program board of the mask machine is damaged.

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