LOTOS MIG140 MIG Welder 1
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......
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.
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. KEEP CHILDREN AWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING.
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. Before using any tool, any part that appears damaged should be carefully checked to determine that it would operate properly and perform its intended function.
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. Do not permit electrically live parts, cables, or electrodes to contact skin, clothing or gloves. This unit draws enough current to cause serious injury and or death.
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. Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the arc when plasma cutting or observing open arc plasma cutting.
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. Ground the equipment in accordance with the manufacturer’s recommendations. MOVING PARTS can cause injury Keep away from moving parts such as fans. Keep all doors, panels, covers, and guards closed and securely in place.
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. It can be easily connected to your existing 110V wall outlet and quickly setup within 10 minutes or less.
POWER SUPPLY RATINGS MIG140 General Specifications Output Power DC Input Voltages 110 V, 1-PH, 50/60 Hz 16” (408mm) L 9.6” (244mm) W 14.5” (367mm) H Dimensions Weight 54lbs (24.5kg) Rated Duty Cycle1 20% @ 90A 18V Steel: clean, dry, oil-free 75% argon and 25% CO Gas Supply Welding Specifications Recommended gas inlet flow rate / pressure 12 – 14L/min Wire Range .025”-.030” (0.6-0.8mm) solid steel .030”-.035” (0.8-0.
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.
MACHINE REAR REAR COMPONENTS 11 Power Cord 12 Reset Overload Protective Device1 13 Shielding Gas Inlet Fitting 12 13 11 1 The protector will cut off the circuit if the welding machine goes over the maximum load, after which the switch must be reset manually.
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.
WELDING GUN INSTALLATION (See Figure C-1, C-2 and C-3) There is one spool of .025” (0.6mm) solid welding wire included with the welder. The welding gun comes with a .025” (0.6mm) contact tip installed. If .030-.035” (0.8-0.9mm) wire is to be used, change the contact tip to the appropriate size. CONNECT THE WELDING GUN TO THE WELDING MACHINE 1. Power off the welding machine (switch is positioned at “O”). 2. Plug the welding gun into the access hole ○ 1 and plug it into to the connector block.
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. For installation of a 8” (200mm) welding wire spool (See Figure D-1). Install the 8“ (200mm) welding wire spool on the wire spindle ○ 1 ○ 2 making sure the wire spool spindle tab engages the hole in the wire spool.
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). 2.
SHIELDING GAS INSTALLATION Compressed gas cylinder containing mixed gas of, 75% Argon and 25% CO2 should be used when using the MIG (GMAW - GAS Metal Arc Welding). The flow regulator and supply hose is included with your welder. The compressed gas can be obtained from your local welding supplier. 1. Fix the compressed gas cylinder with a chain, or other method to the wall or other securing device, to prevent the cylinder of falling. 2. After securing, remove cylinder cap if there is one on your cylinder.
OPERATION PLEASE READ AND UNDERSTAND THIS ENTIRE SECITON BEFORE OPERATING YOUR MACHINE. ONLY QUILIFIED PERSONNEL SHOULD OPERATE THIS EQUIPMENT. OBSERVE ALL SAFETY INFORMATION THROUGHOUT THIS MANUAL. WELDING OPERATIONS ELECTRIC SHOCK can be fatal Have an electrician install and service this equipment.
WELDING PROCESS 1. Please refer to “Welding Control Guide” that is located inside the welding machine door for the output voltage and wire feed rates. 2. Inspect output polarity according to the welding wire being used and ensure whether or not shielding gases are needed. 3. Connect the ground (work) clamp to the piece(s) to be welded; there should be a good connection for the ground (work) clamp to the piece(s). 4. The welding gun should be able to move freely in the area of the piece(s) to be welded. 5.
OTHER ACCESSORIES The following accessories and consumables can be purchased on www.uwelding.com, or call 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.
