1. The ultrasonic cleaner turns on the power switch and the indicator light does not light . the reason: A. The power switch is damaged and there is no power input; B. The fuse ACFU is blown. 2. After the ultrasonic cleaner turns on the power switch, the indicator light is on, but there is no ultrasonic output. the reason: A. The connection plug of the transducer and the ultrasonic power board is loose; B. The fuse DCFU is blown; C. Ultrasonic power generator failure; D. The transducer is faulty. 3. Ultrasonic cleaning machine DC fuse DCFU is blown. the reason: A. The rectifier bridge or power tube is burned; B. The transducer is faulty. 4. After the ultrasonic cleaning machine turns on the power switch, the machine has ultrasonic output, but the cleaning effect is not as good. the reason: A. Improper cleaning liquid level in the cleaning tank; B. The ultrasonic frequency coordination is not adjusted; C. The temperature of the liquid in the cleaning tank is too high; D. Improper cleaning solution. Hot-dip galvanization is a form of galvanization. It is the process of coating iron and steel with zinc, which alloys with the surface of the base metal when immersing the metal in a bath of molten zinc at a temperature of around 840 °F (449 °C). When exposed to the atmosphere, the pure zinc (Zn) reacts with oxygen (O2) to form zinc oxide (ZnO), which further reacts with carbon dioxide (CO2) to form zinc carbonate (ZnCO3), a usually dull grey, fairly strong material that protects the steel underneath from further corrosion in many circumstances. Galvanized steel is widely used in applications where corrosion resistance is needed without the cost of stainless steel, and is considered superior in terms of cost and life-cycle. Galvanized Steel Pipes,Galvanised Pipe,Galvanised Steel Pipe JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , http://www.spgreenhouse.com