General Welding Consumables · Welding Consumables
The SC-71MJ / M21 is a radar system designed for maritime navigation and safety, manufactured by Hyundai Welding Co., Ltd. in Pohang. This radar is equipped to handle both X-Band and S-Band frequencies, adhering to the International Maritime Organization's Safety of Life at Sea (SOLAS) regulations. The system operates using electromagnetic radar technology, ensuring reliable detection and navigation in various marine environments. Maintenance and service considerations for the SC-71MJ / M21 include regular inspections and performance monitoring. Magnetron replacement is necessary every 5,000 to 8,000 hours of operation, with the manufacturer recommending keeping a spare magnetron on board. The lead time for obtaining a spare magnetron is 1 to 3 weeks. Additionally, the antenna bearing requires lubrication annually, and the system should undergo a weekly performance monitor test as required by IMO standards. Common issues include magnetron end-of-life, antenna motor bearing damage, display backlight failure, heading marker misalignment, and moisture ingress in waveguides due to faulty pressure sealing. Regular maintenance and timely spare part replacement help ensure the SC-71MJ / M21 remains operational and compliant with safety regulations.
What our service work and the manufacturer documentation say about keeping this model running.
Magnetron replacement every 5,000-8,000 hours. Antenna bearing lubrication annually. Weekly performance monitor test (IMO requirement). Annual inspection.
Hyundai Welding Co., Ltd. (Pohang): Keep a spare magnetron on board (on magnetron models). Lead time: 1-3 weeks.
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