Table of Contents
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Table of Contents
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Summary of Contents for LOTOS MIG140
- Page 1 LOTOS MIG140 MIG Welder...
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Page 2: Table Of Contents
TABLE OF CONTENTS SAFETY...…………………………………………………………………………4 SPECIFICATIONS…….………………………………………………………9 General Description…………………………………………………………..9 What’s Included……………………………………………………………….9 Power Supply Ratings..…………………………………………………..10 Front Control Panel…..……………..….,.…………………………………...11 Side Components…..…………………..……...……………………………...11 Machine Rear………..……………..………………………………………...12 INSTALLATION………………………………………………………………13 Machine Setup..……………………………………………………………13 Grounding (Work) Clamp Installation ………………………………………13 Welding Gun Installation….…………………………………………………14 Welding Drive Roll Installation...……………………………………………14 Welding Wire Installation..…………………………………………………..15 Shielding Gas Installation..…………………………………………………..17 OPERATION...………………………………………………………………….18 Welding Operations..…….…………………………………………………..18 Welding Steps...………….…………………………………………………..18... - Page 3 MIG140 MIG WELDER Save This Manual You will need the manual for safety warnings and precautions, assembly instructions, operating and maintenance procedures, parts list and diagram. Keep your invoice with this manual. Write invoice number and date of purchase on the inside of the manual. Keep the manual and invoice in a safe...
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Page 4: Safety
SAFETY WARNINGS AND PRECAUTIONS PLEASE READ AND UNDERSTAND THE FOLLOWING SAFETY HIGHLIGHTS. BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE PERFORMED ONLY BY QUALIFIED INDIVIDUALS. ARC AND TIG WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. - Page 5 Avoid starting unintentionally. Be sure the switch is in the off position when not in use and before plugging in. Do not carry any tool with your finger on the trigger, whether it is plugged in or not. Stay alert. Watch what you are doing. Use common sense. Do not operate any tool when tired. Check for damaged parts.
- Page 6 ELECTRIC SHOCK can be fatal The electrode and work (or ground) circuits are electrically “hot” when the machine is on. Do not touch these “hot” parts with your bare skin or wet clothing. Protective clothing should be hole free, dry and ANSI approved. Wear dry, hole-free gloves to insulate hands.
- Page 7 ARC RAYS can burn Avoid eye and body damage. Arc rays and infrared radiation can cause injury to the eyes and burn the skin. Wear ANSI approved eye and body protection. Do not allow viewing by visitors without proper eye and body protection.
- Page 8 ELECTRICALLY POWERED EQUIPMENT can be dangerous Turn off input power using the disconnect switch at the fuse box before working on the equipment. Install equipment in accordance with the local codes and the manufacturer’s recommendations. manufacturer’s Ground equipment accordance...
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Page 9: Specifications
SPECIFICATIONS GENERAL DESCRIPTION The LOTOS MIG140 features a 140 amp MIG welder that can weld at industrial quality and performance at a very affordable price. The most versatile and perfect welder for do-it-yourself home users as well as professional users. The LOTOS MIG140 is also spool gun capable for welding aluminum. -
Page 10: Power Supply Ratings
POWER SUPPLY RATINGS MIG140 Output Power Input Voltages 110 V, 1-PH, 50/60 Hz 16” (408mm) L Dimensions General 9.6” (244mm) W Specifications 14.5” (367mm) H Weight 54lbs (24.5kg) Rated Duty Cycle 20% @ 90A 18V Steel: clean, dry, oil-free 75% argon and... -
Page 11: Front Control Panel
FRONT CONTROL PANEL The unit is connected to the supply even if the Power Switch is in the “OFF” position, and therefore there are electrically live parts inside the power source. Carefully follow the instructions given in this manual. FRONT CONTROL PANEL Potentiometer Knob Power Switch... -
Page 12: Machine Rear
MACHINE REAR REAR COMPONENTS 11 Power Cord 12 Reset Overload Protective Device 13 Shielding Gas Inlet Fitting The protector will cut off the circuit if the welding machine goes over the maximum load, after which the switch must be reset manually. -
Page 13: Installation
INSTALLATION PLEASE READ ENTIRE INSTALLATION SECTION BEFORE STARTING INSTALLATION. BE SURE THAT ONLY QUALIFIED PERSONNEL SHOULD PERFORM THIS INSTALLATION. __________________________________________________________________ MACHINE SETUP ELECTRIC SHOCK can be fatal Have a qualified electrician install and service this equipment. Turn the input power OFF and unplug the machine from the receptacle before working on this equipment. -
Page 14: Welding Gun Installation
In the event that .030” (0.8mm) - .035” (0.9mm) welding wires are used, the wire feed roll groove must be changed. 1. Ensure that the MIG140 welding machine is powered off. 2. Unlatch the spring loaded pressure arm and Figure C-4 open the idle roll arm. -
Page 15: Welding Wire Installation
WELDNG WIRE INSTALLATION The MIG140 welding machine can use wire spools up to 8“ diameter (200mm) and a maximum width under 2” (50mm). If you use the smaller 4“ diameter (100mm) wire spools the 2” (50mm) spindle adapter must removed. - Page 16 Thread the Welding Wire through the Wire Feeder by following the instructions shown as below (Figure D-3) 1. Release the spring-loaded pressure arm ○ 1 of the wire feeder and lift up the idle roll arm. ○ 2 (Note: the groove size in the feeding position on the drive roll matches the wire size being used, see chapter describing the installation to wire feed roll).
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Page 17: Shielding Gas Installation
4. Install one end of the gas supply hose into the outlet of the flow regulator and tighten. Connect the other end of the hose to the gas inlet located at the rear of the MIG140 welding machine (The connector nipple 5/8-18 adapts to CGA-032). Ensure that the hose has no twisting or knotting. -
Page 18: Operation
Wear eye, ear and body protection. WELDING STEPS 1. Make sure power is off on the MIG140 welding machine 2. Remove nozzle and contact tip 3. Power on MIG140 welding machine 4. Straighten welding gun 5. Hold trigger of the welding gun (depressing trigger will feed the welding wire into the welding gun.) When the welding wire is exposed at the outlet side of the welding gun, release the trigger... -
Page 19: Welding Process
THERMAL PROTECTION The MIG140 has a rated output duty cycle of 20%. If the duty cycle is exceeded, a thermal protector will shut off the output until the machine cools to a reasonable operating temperature. This is an automatic function and does not require user intervention. The fan continues to run during cooling. -
Page 20: Other Accessories
408-739-2329 to order. MIG SPOOL GUN The LOTOS MIG140 has a factory-installed option to allow you to install and operate a hand held spool gun. This will allow you to do welding of both Aluminum and Steel. To install the spool gun you must first Power Down the welder, remove the standard MIG gun and install the Spool Gun using the same installation process as described on page 9.
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