[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-652324-105":59,"doc-detail-652324-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","mma-120160200250-welding-machine-safety-caution-user-instruction","MMA 120/160/200/250 Welding Machine Safety Caution & User Instruction","","User instruction manual detailing safety cautions and operating precautions for MMA welding machines covering models MMA 120, MMA 160, MMA 200, and MMA 250. Content explains hazards from electric shock, gas exposure, arc radiation, fire risk, extreme noise, and handling malfunctions. It introduces machine principles of inverter technology, provides key performance and power parameters by model, and gives installation steps including earthing, cable selection, polarity connection methods, and DC welding connection guidance.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/mma-120160200250-welding-machine-safety-caution-user-instruction/652324/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/mma-120160200250-welding-machine-safety-caution-user-instruction/652324.png","ImageObject",300,407,{"name":92,"@type":93},"Jiven","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-24",true,{"@type":102,"interactionType":103,"userInteractionCount":81},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What safety precautions are required to prevent electric shock during welding operations?","Question",{"text":112,"@type":113},"Follow standard earthing requirements and avoid touching electric parts and electrodes with bare skin or when wearing wet gloves/clothes. Stay properly insulated from ground and the workshop and ensure you are in a safe position.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How should operators protect themselves from gas, arc radiation, and welding sparks?",{"text":117,"@type":113},"Keep your head out of the gas and use an air extractor during arc welding to avoid breathing the gas. Wear a suitable helmet and light filter and protective garment for eye/skin protection, and ensure no tinder materials are near the welding area to prevent fire.",{"name":119,"@type":110,"acceptedAnswer":120},"How do you install and connect the MMA welding machine safely, including cable and polarity?",{"text":121,"@type":113},"Ensure machine intake is not blocked, use an inducting cable of at least 6 mm² to connect to ground, and connect holder/arc torch correctly per the sketch. Use positive/negative connection guidance for DC welding and, if unstable arc or excessive spatter occurs, change the polarity of the fastening plug.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},652324,1793029985,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":81,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":39,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":46},1099513958607,"https://ap-avatar.wpscdn.com/avatar/100002390cf8733938c?x-image-process=image/resize,m_fixed,w_180,h_180&k=1778829742770036399","USER ` S MANUAL  \nMMA 120/160/200/250  \nSAFETY CAUTION！  \nOn the process of welding or cutting, there will be possibility of injury. Please take protection into consideration during operation. For more details please review the Operator Safety Guide, which complies with the preventive requirements of the manufacturer  \nElectric shock——may lead to death ！！  \n· Set the earth fitting according to applying standard.  \n· It is forbidden to touch the electric parts and electrode when the skin is bare, wearing wet gloves or clothes.  \n· Make sure you are insulated from the ground and the workshop.  \n· Make sure you are in safe position.  \nGas——may be harmful to health!  \n·Keep your head out of the gas.  \n·When operating with arc welding, air extractor should be used to avoid breathing gas.  \nArc radiation——harmful to your eyes and burn your skin.  \n·Use suitable helmet and light filter, wear protective garment to protect eye and body.  \n·Use suitable helmet or curtain to protect looker-on.  \nFire  \n·Welding spark may cause fire, make sure there is no tinder stuff around the welding area.  \nNoise——extreme noise will be harmful to hearing.  \n·Use ear protector or others means to protect ear.  \n·Warn that noise is harmful to hearing if there is looker-on around.  \nMalfunction——when trouble happens, contact the professionals  \n·If trouble happens during installation and operation, please follow this manual instruction to checkup.  \n·If you fail to fully understand the manual, or fail to solve the problem with the instruction, you  \nshould contact the suppliers or our service center for professional help.  \nCAUTION！  \nCreepage-protecting switch should be added when using the machine！！！  \nABOUT THE MACHINE  \nThe welding machine is a rectifier adopting the most advanced inverter technology.  \nThe development of inverter gas-shielded welding equipment profits from the development of the inverter power supply theory and components. Inverter gas-shielded welding power source utilizes high-power component IBGT to transfer 50/60Hz frequency up to 30KHz, then reduce the voltage and commutate, and output high-power voltage via PWM technology. Because of the great reduce of the main transformer’s weight and volume; the efficiency increases by 30% . The appearance of inverter welding equipment is considered to be a revolution for welding industry.  \nThe welding power source can offer stronger, more concentrated and more stable arc. When stick and work piece get short, its response will be quicker. It means that it is easier to design into welding machine with different dynamic characteristics, and it even can be adjusted for specialty to make arc softer or harder.  \nMMA welding machine has the following characteristics: effective, power saving, compact, stable arc, good welding pool, high no-load voltage, good capacity of force compensation and multi-use. It can weld stainless steel, alloy steel, carbon steel, copper and other color metal. It can apply to electrode of different specifications and materials, including acidity, alkalescence, and fibre. It can apply in high altitude, the open air and inside and outside decoration. Compared with the same products of home and abroad, it is compact in volume, light in weight, easy to install and operate.  \n\n| | CAUTION！\u003Cbr>The machine is mainly used in industry. It will produce radio wave, so the worker should make |\n| --- | --- |\n| fully preparation for protection. |  |\n\nPARAMETERS  \n\n| Model Parameters | MMA 120 | MMA 160 | MMA 200 | MMA 250 |\n| --- | --- | --- | --- | --- |\n| Power voltage（V） | 1phase AC230V\u003Cbr>± 15% | 1phase AC230V\u003Cbr>± 15% | 1phase AC230V\u003Cbr>± 15% | 1 phase AC230V ± 15% |\n| Frequency （Hz） | 50/60 | 50/60 | 50/60 | 50/60 |\n| Rated input current（A） | 11.8 | 16.8 | 16.8 | 18.2 |\n| No-load voltage（V） | 56 | 65 | 65 | 65 |\n| Output current（A） | 20-120 | 20-160 | 20-200 | 20-250 |\n| Rated output voltage\u003Cbr>（V） | 25.6 | 26.4 | 28 | 30 |\n| Force range（A） | ---- | ---- | ---- | 0-100 |\n| Duty","cbCaieV498OsLai9","https://ap.wps.com/l/cbCaieV498OsLai9","pdf",744076,"English","# SAFETY CAUTION\n## Electric shock\n## Gas\n## Arc radiation\n## Fire and Noise\n## Malfunction\n# ABOUT THE MACHINE\n# PARAMETERS\n# INSTALLATION","[{\"question\":\"What safety precautions are required to prevent electric shock during welding operations?\",\"answer\":\"Follow standard earthing requirements and avoid touching electric parts and electrodes with bare skin or when wearing wet gloves/clothes. Stay properly insulated from ground and the workshop and ensure you are in a safe position.\"},{\"question\":\"How should operators protect themselves from gas, arc radiation, and welding sparks?\",\"answer\":\"Keep your head out of the gas and use an air extractor during arc welding to avoid breathing the gas. Wear a suitable helmet and light filter and protective garment for eye/skin protection, and ensure no tinder materials are near the welding area to prevent fire.\"},{\"question\":\"How do you install and connect the MMA welding machine safely, including cable and polarity?\",\"answer\":\"Ensure machine intake is not blocked, use an inducting cable of at least 6 mm² to connect to ground, and connect holder/arc torch correctly per the sketch. Use positive/negative connection guidance for DC welding and, if unstable arc or excessive spatter occurs, change the polarity of the fastening plug.\"}]","MMA 120/160/200/250 Welding Machine Safety Caution & User Instruction | PDF",1792879784]