LOTOS MIG140 Manual Download

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OTHER ACCESSORIES

The following accessories and consumables can be purchased on

www.uwelding.com

, or call

408-739-2329 to order.

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. You must push Switch (7) from MIG to
Spool Gun. This will disable the drive system of the welder and enable the Spool Gun’s drive system.

CONSUMABLES

ACCESSORIES

MIG SPOOL GUN

NOZZLES

Summary of Contents for MIG140

Page 1: ...1 LOTOS MIG140 MIG Welder ...

Page 2: ...e 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 Welding Process 19 Overload Protection 19 OTHER ACCESSORIES 20 ...

Page 3: ... manual Write invoice number and date of purchase on the inside of the manual Keep the manual and invoice in a safe and dry place for future Operation Manual Carefully read the operation manual prior to using installing and maintaining the electric welding machine for the purpose of preventing damages such as fire electric shock and etc from occurring Please keep the manual for the reference in th...

Page 4: ...tool capacity Use the right tool for the job Do not attempt to force a small tool or attachment to do the work of a larger industrial tool There are certain applications for which this welder was designed Do not modify this welder and do not use this welder for any other purposes for which it was not intended Dress properly Do not wear loose clothing or jewelry as they can be caught in moving part...

Page 5: ... on prescriptions to determine if your judgment or reflexes are impaired while taking drugs If there is any doubt do not operate the welder Maintenance For your safety service and maintenance should be performed regularly by a qualified technician Use proper size and type extension cord If an extension cord is required it must be of the proper size and type to supply the correct current to the wel...

Page 6: ...ty belt to protect yourself from a fall should you get a shock FUMES AND GASES can be dangerous Plasma cutting may produce fumes and gases hazardous to health Avoid breathing these fumes and gases When cutting keep your head out of the fume Use enough ventilation and or exhaust at the arc to keep fumes and gases away from the breathing zone In confined spaces or in some circumstances outdoors a re...

Page 7: ...are to be used at the job site special precautions should be used to prevent hazardous situations Do not heat cut or weld tanks drums or containers until the proper steps have been taken to insure that such procedures will not cause flammable or toxic vapors from substances inside They can cause an explosion even though they have been cleaned Always keep a fire extinguisher nearby while welding Us...

Page 8: ... 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 Please read this Operation Manual carefully and thoroughly before attempting to operate this machine Keep this manual handy for quick reference Pay close attention to the safety instru...

Page 9: ... minutes or less It handles industrial standard 4 or 8 wire spools and incorporates a thermal overload protection system to protect your welder 140 amp MIG Welder with mask etc Operates on 110V Single phase 60Hz Suitable for welding stainless steel mild steel aluminum with a spool gun and other metal materials WHAT S INCLUDED Power Supply MIG Torch Ground Clamp and Cable Argon Hose Argon Regulator...

Page 10: ...g Specifications Gas Supply Steel clean dry oil free 75 argon and 25 CO Recommended gas inlet flow rate pressure 12 14L min Wire Range 025 030 0 6 0 8mm solid steel 030 035 0 8 0 9mm Flux Cored Material Mild Steel 24 Gauge Stainless Steel 24 Gauge Warranty New Unit 1 Year Warranty Refurbished Unit 60 Day Warranty 1 Duty Cycle is percentage of 10 minutes that unit can weld at rated load without ove...

Page 11: ...ly follow the instructions given in this manual FRONT CONTROL PANEL 1 Potentiometer Knob 2 Power Switch 3 Wire Feed rate Adjustment Knob 4 Gun Trigger Lead Connectors 5 Latch SIDE COMPONENTS SIDE COMPONENTS 6 Wire Feed Gearbox 7 Wire Spool Spindle Shaft 8 Wing Screw to fasten welding gun 9 Positive and Negative output terminals 10 Mode Switch for optional spool gun 5 1 4 2 7 8 6 9 3 10 ...

Page 12: ...or will cut off the circuit if the welding machine goes over the maximum load after which the switch must be reset manually REAR COMPONENTS 11 Power Cord 12 Reset Overload Protective Device1 13 Shielding Gas Inlet Fitting 12 13 11 ...

Page 13: ...ng lasting and reliable operation The machine must be located where there is open space such that the air circulation in the back and out the front will not be restricted Avoid getting dirt and dust in the machine Failure to observe these precautions can result in excessive operating temperatures and shutdown by itself ENVIRONMENTALAREA Keep the machine dry Do not place it on wet ground or in pudd...

Page 14: ...e the Gun changing switch 7 is in the correct position MIG for standard welding and Spool Gun if optional gun is installed WIRE DRIVE ROLL INSTALLATION The reversible dual groove wire drive roll attached to MIG140 has two wire grooves One for 025 0 6mm solid welding wire and the other for 030 035 0 8 0 9mm solid or flux cored welding wire The factory default installation is 025 0 6mm In the event ...

Page 15: ...reeled For installation of a 4 diameter 100mm welding wire spool See Figure D 2 The 2 50mm diameter spindle must be removed 2 4 Remove the wing screw 5 and remove the outside plastic wire spool spindle 6 A 4 100mm diameter spool is mounted directly on a 5 8 16mm diameter shaft and held in place with the previously removed hardware 7 NOTE The wire spool will rotate clockwise when wire is de reeled ...

Page 16: ... To prevent the spool from unwinding maintain tension on the wire until after Step 5 3 Cut off the starting end of the welding wire from the wire spool and straighten the lead section of wire from the spool approximately 4 100mm long 4 Thread the welding wire through and into the hole 4 of the inlet guide tube threading it over the wire drive roll 5 and into the hole 6 of the outlet guide tube on ...

Page 17: ...ne on your cylinder 3 Install flow regulator CGA 580 to the supply valve on the cylinder and tighten with wrench 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: ...zzle and contact tip 8 Cut off the welding wire 1 4 1 2 6 10mm away from the tip end of the welding gun and get ready for welding ELECTRIC SHOCK can be fatal Have an electrician install and service this equipment Turn the input power off at the fuse box disconnect or unplug supply lines and allow machine to sit for five minutes minimum to allow the power capacitors to discharge before working insi...

Page 19: ...valve of the compressed gas cylinder if gas is used and then press trigger of the welding gun to release compressed gas in system Finally power off the MIG140 welding machine OVERLOAD PROTECTION Overload protection for power supply to welding The MIG140 Welding Machine is equipped with a circuit breaker and a thermostat which protects the machine from damage if maximum output is exceeded The circu...

Page 20: ... 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 You must push Switch 7 from MIG to Spool Gun This will disable the drive system of the welder and enable the Spool Gun s drive system CONSUMABLES ACCESSO...

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