induction heating equipment should have a full-time operator, requiring the operator to understand the working principle of the power supply, familiar with the operation procedures, and master the general maintenance knowledge, in the operation of the regular inspection to check whether abnormal temperature rise, abnormal noise, Whether there is water leakage in the water cooling system, whether the cooling water is unblocked in each way, whether the various instrument indications are normal or not, and keep records in accordance with the regulations, regularly check the voltage sharing resistance of the thyristor, and whether the connection of the resistance and capacitance absorption elements is intact or not. Periodically check the rectifier bridge output waveform with an oscilloscope. Also pay attention to do a good job of daily cleaning work. In addition, every six months to one year or the completion of a project, should be maintained regularly, as follows.
1, internal and external cleaning, including all kinds of solder joint cleaning and inspection, relays, contactors, contacts and iron core cleaning, replacement of circulating water, removal of water cooling system scale, replacement of aging and deterioration of pipes, etc.
2, check the oil leakage or replacement of insulation and clogging capacitors.
3, determine the waveform of each thyristor (light load, rated load and rated power), and analyze whether the characteristics of Thyristor have changed.
4, comprehensively check the control loop, trigger system, including waveform measurement, voltage measurement, phase shift check of rectifier trigger pulse, reliability check of protection action.
5, determine the inverter output waveform, check whether the safety margin has a big change.
6, calibration instruments and protective relays.
7,The voltage equalizing resistance and capacitive absorption resistance of each thyristor are measured.
8, tighten the connecting bolts and terminals of the conductive part, and fasten the screws of the elements.
Overseas manager: Tom Wang
Phone: 0086-13303078975(whatsapp, wechat,line)
Specialist of bar heat treatment furnace in China; Glad to be your business partner in induction heating field.
Post time: 03-29-2019