Longevity MigWeld 140 User manual

MigWeld 140 140AMPMIG Welder
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Operating Manual
For
MigWeld 140
140AMP Transformer MIG Welder 110v

MigWeld 140 140AMPMIG Welder
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Table of Contents:
PG. 3: Thank you From LONGEVITY
PG. 4-6: Warranty/Shipping Damage/Order Information
PG. 7-9: Warning and Safety Information
PG. 10: General Description
PG. 11: Specifications and Ratings
PG. 12-16: Safety Precautions
PG. 17: Unpacking
PG. 18: Components and Controls
PG. 19-23: Installation
PG. 23-24: Welding Operations
PG. 25: Suggested Settings
PG. 26: Overload Protection
PG. 27: Enjoy your new welding machine from LONGEVITY!

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THANK YOU!
We, at LONGEVITY, want to thank you for purchasing our product. You are almost ready to
experience Longevity Welding first hand. Longevity definitely appreciates your business and
understand that this equipment may be overwhelming to setup and operate so we have
prepared a manual that will assist you in understand your new plasma cutter/welder. If you
have any questions during or after reading this manual, please feel to contact us! Please
take a moment to register your product on our website at www.longevity-inc.com or
www.lweld.com
Once again, thank you for choosing Longevity as your main welding supplier!

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Longevity Global, Inc.
23591 Foley St
Hayward, CA 94545
Toll-Free Customer Support: 1-877-LONG-INC / 1-877-566-4462
Website: www.longevity-inc.com
Sales: [email protected]
Customer Service: [email protected]
Dealers: [email protected]
Complaints: [email protected]
Please join our welding forums to share welding tips and tricks, to receive useful information
from customers who also use our products, and to be a part of the Longevity™ welding
community at www.freeweldingforum.com
Check out LONGEVITY Racing at www.longevity-racing.com

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W arranty
LONGEVITY Plasma Cutters, Welders, and Multi-Purpose Welders are covered for specific
Parts and Labor warranty at our facility. For detailed information regarding your specific
LONGEVITY welder or cutter, please view our Terms and Policies page on our website at
the following website link: http://www.longevity-inc.com/terms/
Shipping Damage
Your machine is insured against damage during shipping. Keep all packing materials and
containers in case machine must be returned. We will initiate a claim with the shipping
company to cover damage or loss. If there is shipping damage upon opening your package,
our customer service team will work with you to get the matter resolved.
In Warranty Service
Customers, who own machines that are in warranty and require service, should contact our
Warranty Department by email at [email protected] to obtain a return authorization
code. In addition to the warranty we offer, we would like for you to register your product on
our website at www.longevity-inc.com/resources. Remember, warranty starts from the date of
purchase. For your convenience, write your order information below so you can track your
order in case you need warranty work.
Order No.: _________________________________
Date of Purchase: _____________________________
Warranty Period: ______________________________

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Out-of-Warranty Service
Customers, who own machines that are out of warranty and require service, should contact us
for an estimate. Longevity offers an exchange program on out of warranty units. We also help
non LONGEVITY customers with repairs, replacement, and service.
If your unit is not manufactured by Longevity and you cannot receive service from your
manufacturer or seller, Longevity will lend out hand. Our warranty policy is also available for
all plasma cutters and welders. For more information, please email us at
[email protected]

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Warnings and Safety
Welding and plasma cutting may be dangerous to the operator and to bystanders, if the
equipment is not operated properly. Welding or cutting must be performed in accordance with
all relevant safety regulations. Carefully read and understand this instruction manual before
installing and operating this equipment.
Changing function modes during welding may damage
equipment.
Before welding, disconnect the electrode-holder cable from the
equipment.
A circuit breaker is required to prevent electrical overload of the
equipment.
Only high quality welding tools should be used.
Electric Shock can be fatal.
Ensure that ground cable is connected in accordance with
applicable safety codes.
Never touch electrodes, wires, or circuit components with bare
hands. Wear dry welding gloves when welding.
The operator must be insulated from the work piece.
Smoke and gas can be harmful to health.
Ensure that the working area is well ventilated.
Avoid breathing smoke and gas generated during the welding
process. Cutting and welding can cause cancer because of the
smoke that comes from the welds and cuts.

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Arc-light emission can be harmful to eyes and skin.
Always wear a welding helmet, anti-radiation glass, and work
clothes while welding.
Ensure that people in or near the working area are protected.
Welding splash is a fire hazard.
Keep flammable material away from the work place.
Keep a fire extinguisher nearby, and have all personnel trained in
its use.
Surface noise generated while welding or cutting can be harmful
to hearing.
In the event of a machine fault.
Refer to this instruction manual.
If the fault cannot be determined, contact your local dealer or
supplier for assistance.

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Safety Tips
Consider the following tips to ensure safe operation of your welding/cutting equipment:
Ensure that this welding equipment is installed in an area free of corrosive chemical
gases, flammable gases or materials, and explosive chemicals.
The area should contain little dust, and have a humidity of no more than 80%.
Operate the welding equipment in an area sheltered from direct sunlight and precipitation.
Work area temperature should be maintained at - to
If, because of an overload, the machine suddenly stops, and it is necessary to restart it,
leave the internal fan operating to lower the inside temperature.
Always wear protective clothing and a welding mask to protect your skin.
Wear safety goggles designed to darken the arc generated by your machine.
Wear suitable noise protection to protect your hearing.
Ensure that machine is grounded through the power cord or on the machine case.
Never operate the machine in bare feet or on a wet floor.
Never switch the machine off while it’s in use. Doing so will damage the internal
circuitry.
Ensure that your circuit breaker is rated to handle the current requirements of your
machine.
Use a UL approved receptacles and plugs with your machine. Never hard wire the
machine to main power.
Work in a well-ventilated area to avoid smoke. Keep your head out of the smoke. Ensure
that air is flowing away from you to avoid inhaling smoke.
Ensure proper ventilation through the machine’s louvers. Maintain a distance of at
least 12 inches between this cutting equipment and any other objects in the work area.
Use a screen or curtain designed to keep passer byes from viewing the arc.
The arc spray and metal spray from machine use may cause nearby fires. Use caution.
 If, after reviewing this manual, you have any problems in setting up or operating your
machine, contact us at [email protected].

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General Description:
The LONGEVITY MIGWELD 140 welder delivers industrial quality and
performance at an affordable price. Perfect for the beginner and the
professional. The MIGWELD 140 is the most versatile welder which will do
aluminum with the optional spool gun in addition to all exotic metals. The
MIGWELD 140 will easily connect to your existing 110v wall outlet and can
be setup easily in minutes. Running on a standard 110v power cord, which is
included, you will be able to lay down a nice weld anywhere.