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Ultrasonic Cleaner Common Fault Judgment
Oct 31, 2017

Ultrasonic cleaning machine common fault judgment

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Ultrasonic cleaning machine failure can not be used normally, the general is the following eight cases, for these eight cases, analysis and testing:

First, the insurance damage: After the boot found no power display, no action, first of all depends on whether the power supply seat is damaged.

Analysis: There may be a user ground wire and the line of fire or zero line, and no grounding (the machine ground is connected with the machine shell), there may be short-circuit machine, component aging short circuit phenomenon, resulting in damage to insurance.

Detection: take out insurance to watch, with or without broken, with a multimeter through the file to determine whether to disconnect, replace the new device.

Second, the transducer damage:

Analysis: may be due to a long time in the boot state, the temperature will gradually lead to colloid melting transducer shedding or transducer ceramic part of the fracture.

Detection: measuring the transducer with a shake table insulation strength, insulation strength below 200MΩ has been unable to use, to be replaced by a new transducer. The internal ceramic of the transducer will also be broken due to long-term use, so that it can not work properly.

Third, the power tube damage:

Analysis: the power tube on the motherboard because the machine for a long time without interruption or cleaning the liquid too long for a long time, so that the power tube short circuit situation.

Detection: When the power tube connected on the motherboard, with a multimeter to measure the power pipe on both sides of the pin resistance, under normal circumstances should be about 22Ω. After taking the power tube (disconnected from the motherboard), it should not be possible to measure each of its pins.

Fourth, the regulator tube damage

Analysis: regulator tube damage is generally in the power tube resistance is small or short circuit, the boot caused by its own is very little damage.

Detection: According to the characteristics of the diode, forward conduction, reverse to. Measured with a multimeter diode, positive resistance of about 70Ω, reverse ∞. If the value of the deviation is too large or positive resistance is ∞, replace the new regulator tube.

Fifth, the bridge damage (diode rectifier circuit)

Analysis: with the regulator tube condition

Detection: the same according to the diode characteristics (bridge itself is composed of diodes)

Six, the control panel damage (adjustable ultrasonic cleaner)

Analysis: a long time continuous work, aging components, and sometimes and sometimes infiltration of cleaning fluid.

Detection: in the machine does not work, disconnect the control board and the motherboard connection. The motherboard power, such as machine work, then the control panel is damaged, need to be replaced.

Seven, inductance, isolation transformer damage

Analysis: As the machine for a long time work, inductance, transformers are cooling components, the itself may be due to high temperature and melt, burn, resulting in short circuit.

Detection: inductance, transformer damage, in most cases intuitive to see the traces of burned out, replace the new device.