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Ultrasonic cleaner abnormal can not be used normally, how to deal with?

Date: 2022-08-20Number: 248

Abnormal ultrasonic cleaner can not be used normally, usually the following 8 cases are common, for these 8 cases, analysis and detection:

1. Commercial insurance damage: after the restart if there is no power supply indicated, no instructions, the first thing to consider is whether the power seat commercial insurance is damaged.
Analysis: it may be that the user ground wire is mixed with fire wire or zero wire, and is not grounded (the local ground wire is connected with the equipment shell) , or it may be a short circuit of the equipment, caused the destruction of commercial insurance.
Inspection: take out the commercial insurance watch, there is no break, use the multimeter on-off gear measurement is off, replacement of new devices.
2. Transducer failure:
Analysis: may be in the long-term use of start-up conditions, the ambient temperature will continue to rise caused by the colloid solution dissolved transducer down or transducer ceramic part of the rupture.
Inspection: measure the insulation strength of the transducer with the shaking table. The insulation strength below 200mω can not be used and a new transducer is required.
The ceramic inside the transducer will also break due to long-term use, making it unable to work properly.
3.Power tube damage:
Analysis: the power tube on the motherboard because of long-term uninterrupted use of equipment or cleaning liquid too little long-term use, so that the power tube short-circuit situation.
Inspection: when the power tube is connected on the motherboard, the resistance value of the pins on both sides of the power tube should be measured with a multimeter. Under normal circumstances, it should be about 22Ω. After taking off the power tube (disconnected from the motherboard) , the measurement of its various pins should not be connected.
4. The manostat is damaged
Analysis: the destruction of the voltage regulator is usually in the power tube resistance value is small or short-circuit, caused by boot, its own is very difficult to damage.
Inspection: according to the diode characteristics, forward conduction, reverse cut-off. The forward resistance is about 70 ω, and the reverse is ∞ . If the numerical deviation is too large or the forward resistance value is also ∞ , replace the regulator.
5. Damage to the bridge (diode rectifier circuit)
Analysis: the case of the same voltage regulator
Check: the same according to the diode characteristics (the bridge itself is composed of diodes)
6. Damage of control board (adjustable ultrasonic cleaner)
Analysis: Long-term continuous operation, electronic device aging-related, and sometimes will also penetrate the cleaning fluid-related.
Inspection: on condition that the equipment does not work, disconnect the connection between the Control Board and the motherboard. Electrifying the motherboard means that the control board is damaged and needs to be replaced if the equipment is running.
7. Damage of inductance and isolation transformer
Analysis: because the long-term operation of equipment, inductors, transformers belong to the heat dissipation components, its own may be too high temperature and melting, burning, causing a short-circuit.
Inspection: inductance, transformer damage, in most cases can be seen visually burned traces, replacement of components.
Ultrasonic cleaner abnormal time can not be impatient, according to the above analysis and detection to solve the problem.