Youly Electric YL Powership MMA-250FI Manuals

1 Operator’s Manual MMA-160FI MMA-250FI Inverter DC MMA Welder IMPORTANT: This operational manual kindly show you how to install, dedug, operate and maintain the welder. Read this instructions carefully and you will understand how to use it to reduce the risk of error operation. Warning! This machine should be operated and maintained by full-time staffs or professionals. You are not allowed to operate and repair it unless read this manual 2 CONTENT 1 Brief Introduction ----------------------------------------------------------------------------------------- 3 2 Safety --------------------------------------------------------------------------------------------------------- 3 2.1 Self-Protection --------------------------------------------------------------------------------------------- 3 2.2 Cautions ---------------------------------------------------------------------------------------------------- 4 2.3 Safety Precaution for Installation and Location ------------------------------------------------------ 4 2.4 Security Check -------------------------------------------------------------------------------------------- 5 3 Technical Description ------------------------------------------------------------------------------------- 5 3.1 Environment ----------------------------------------------------------------------------------------------- 5 3.2 Input Power ------------------------------------------------------------------------------------------------ 6 3.3 Equipment Principle -------------------------------------------------------------------------------------- 6 3.4 Equipment Structure -------------------------------------------------------------------------------------- 6 3.5 Guide for Marking Models ------------------------------------------------------------------------------ 7 3.6 Parameter --------------------------------------------------------------------------------------------------- 7 3.7 Standard ---------------------------------------------------------------------------------------------------- 8 3.8 Symbol Chart ---------------------------------------------------------------------------------------------- 8 4 Installation -------------------------------------------------------------------------------------------------- 8 4.1 Connection ------------------------------------------------------------------------------------------------- 8 4.2 Power Source Connection ------------------------------------------------------------------------------ 9 4.3 Electrode Polarity ---------------------------------------------------------------------------------------- 9 4.4 Workpiece Connection ---------------------------------------------------------------------------------- 10 5 Operation Instruction ----------------------------------------------------------------------------------- 10 5.1 Procedure ------------------------------------------------------------------------------------------------- 11 5.2 Electrode Replacement --------------------------------------------------------------------------------- 11 5.3 Slag Removal -------------------------------------------------------------------------------------------- 12 5.4 Maintenance ---------------------------------------------------------------------------------------------- 12 6 Basic Trouble Shooting ---------------------------------------------------------------------------------- 13 7 Parts List --------------------------------------------------------------------------------------------------- 14 8 Interconnection Diagram ------------------------------------------------------------------------------- 15 9 Accessories ------------------------------------------------------------------------------------------------- 15 10 Transportation and Storage -------------------------------------------------------------------------- 16 11 Quality Warranty --------------------------------------------------------------------------------------- 16 3 1 Brief Introduction INARC welder uses imported IGBT as main electric components. It is supplemented by a specially developed main PCB board. In addition, the uniform regulation of welding current has been designed to guarantee the arc reach good welding process adaptability. What’s more, its perfect dynamic protection features ensure that it is safe and reliable when use. It is ideal for using low carbon steel, alloy steel etc. INARC Features:  60% high duty cycle.  Lower cost operation, more portable, more compact, superior output.  Excellent arc properties and solution droplet transfer.  With the protections of over-heating, over-current.  Digital display function.  Plastic handle makes it beautiful and easy to carry.  Convenient quick connection for the output makes it quick, safe, simple and stable. NOTES: The above description may be modified without prior notice such as omissions, unclear statements about this welder. 2 Safety 2.1 Self-Protection * The user must comply with occupational safety and health rules and wear appropriate labor protective equipment. Try to avoid injury on eye and skin. * It is safe to cover your head with face mask while welding, only do the observation on the arc through the window of the mask. * Don’t expose any part of the body at the same time to the welding positive and negative output terminals without insulated protection.