ATE MIG131L/1 User manual

INDUSTRIAL
MIG131L/1 WELDER
ASSEMBLY AND OPERATING INSTRUCTIONS

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MIG131L/1 Manual
Specifications
Save This Manual
You will need the manual for the safety warnings and precautions, assembly instructions, operating and
maintenance procedures, parts list and diagram. Keep your invoice with this manual. Write the invoice
number on the inside of the front cover. Keep the manual and invoice in a safe and dry place for future
reference.
Safety Warnings and Precautions
WARNING: When using tool, basic safety precautions should always be followed to reduce the risk of
personal injury and damage to equipment.
Read all instructions before using this tool!
1. Keep work area clean. Cluttered areas invite injuries.
2. Observe work area conditions. Do not use machines or power tools in damp or wet locations. Don’t
expose to rain. Keep work area well lighted. Do not use electrically powered tools in the presence of
flammable gases or liquids.
3. Keep children away. Children must never be allowed in the work area. Do not let them handle
machines , tools , or extension cords.
4. Store idle equipment . When not in use , tools must be stored in a dry locations to inhibit rust. Always
lock up tools and keep out of reach of children.
5. Do not force tool. It will do the job better and more safely at the rate for which it was intended . Do not
use inappropriate attachments in an attempt to exceed the tool capacity.
6. 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 tool was designed . Do not modify
this tool and do not use this tool for a purpose for which it was not intended .
7. Dress properly. Do not wear loose clothi8ng or jewelry as they can be caught in moving parts.
Protective, electrically non-conductive clothes and non-skid footwear are recommended when working.
Wear restrictive hair covering to contain long hair.
8. Use eye and ear protection . Always wear arc shaded , impact safety full face shield when arc welding ,
War dust mask or respirator when working around metal, chemical dusts, fumes and mists.
ITEM DESCRIPTION
Welding Current 25—95A
Duty Cycle 100%@25A 60%@35A 35%@50A 20%@75A
Power Consumption 120VAC, 19amps at 60Hz
Ground Cable 8AWG, single insulation , 6 foot
Torch Power cable 8AWG, single insulation ,6 foot
Power Cord 3-core, double insulated,14AWG
Power Cord Plug UL listed
Thermal Overload Both settings:10 min.shutdown,3min.back on with light
Welder Tip 0.023” ---- 0.040”
Wire Size 0.023” –0.035 ”steel and stainless steel and 0.030 ” flux core wire
Wire Spool Size 4” diameter
Overall Dimensions 67*33*42cm
Weight 24kgs
Accessories 0.040” welder tip, Welding Face Shield, Wire Brush/ Hammer Combination.

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9. Do not overreach. Keep proper footing and balance at all times .Do not reach over or across running
machines.
10. Maintain tools with care . Keep tools sharp and clean for better and safer performance. Follow
instructions for lubricating and changing accessories . Inspect tool cords periodically and, if damaged,
have them repaired by an authorized technician. The handles must be kept clean, dry , and free from oil
and grease at all times.
11. Disconnect power. Unplug tool when not in use.
12. Remove adjusting keys and wrenches. Check that keys and adjusting wrenches are removed from the
tool or machine work surface before plugging it in.
13. Avoid unintentional starting. 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.
14. Stay alert. Watch what you are doing , use common sense . Do not operate any tool when you are tired.
15. Check for damaged parts. Before using any tool, any part that appears damaged should be carefully
checked to determine that it will operate properly and perform its intended function . Check for
alignment and binding of moving parts; any broken parts or mounting fixtures ; and any other
condition that may affect proper operation. Any part that is damaged should be properly repaired or
replaced by a qualified technician. Do not use the tool if any switch does not turn ON and OFF
properly.
16. Guard against electric shock. Prevent body contact with grounded surfaces such as pipes, radiators,
ranges, and refrigerator enclosures.
17. Replacement parts and accessories. When servicing, use only identical replacement parts. Use of any
other parts will void the warranty . Only use accessories intended for use with this tool. Approved
accessories are available from Harbor Freight Tools.
18. Do not operate tool if under the influence of alcohol or drugs. Read warning labels on prescriptions to
determine if your judgment or reflexes are impaired while taking drugs. If there is any doubt, do not
operate the tool.
19. Maintenance. For your safety , service and maintenance should be performed regularly by a qualified
technician.
20. 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 tool without heating up. Otherwise, the extension cord
could melt and catch fire, or cause electrical damage to the tool.
21. Pacemaker safety warning. People with pacemakers should consult with their physician(s) before using
this product; operation of equipment in close proximity to a heart pacemaker could cause interference
or failure of the pacemaker.
Note: Performance of this tool may vary depending on variations in local line voltage. Extension cord
usage may also affect tool performance.
Warning: The warnings, cautions, and instructions discussed in this instruction manual cannot cover all
possible conditions and situations that may occur . It must be understood by the operator that common
sense and caution are factors which cannot be built into this product, but must be supplied by the operator.
Arc Welding Safety Warnings and Precautions
Warning: This product, when used for welding and similar applications, produces chemicals may cause
cancer and birth defects ( or other reproductive harm).
1. Avoid electrical shock. Do not permit electrically live parts, cables , or electrodes to contact skin,
clothing, or gloves. Protective clothing should be free of holes, dry.

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This unit draws enough current to cause serious injury or death . Before turning the welder on , check
the electrode holder to be sure that there are no protruding screw heads, and that all insulation is secure.
Do not weld unless you are insulated form ground and the work piece.
2. Avoid breathing fumes or gases . They can cause serious health problems. Use an active ventilation
system directly above the welding area. Keep your head out of the fumes.
3. Avoid eye and body damage. Arc rays and infrared radiation can injure eyes and burn skin. Wear eye
and body protection. Do not allow viewing by visitors without proper eye and body protection. Use a
face shield with arc shaded filter plate.
4. Know proper arc welding practices. Read and understand this instruction manual, as well as your
employer’s safety practices for arc welding.
5. Connect only to a code approved power source. Connect only to a grounding power source conforming
to the National Electrical Code and Local Codes.
6. Avoid fire ad explosion. Remove flammable and explosive material from at least 35 feet from the
welding arc to prevent welding sparks or molten metal from starting a fire. Keep a type ABC fire
extinguisher within easy reach. Thoroughly clean the object being welded of any paint, grease , or
other foreign material.
7. Avoid being burned. Always wear welding gear: leather gloves, leather apron, and shoes.
8. Wear proper clothing when welding. Use flameproof, welding type gloves. Wear cuffless pants and
pocketless shirt. Both must be free of oil and grease. Wear high-topped, safety to shoes with rubber
soles.
Unpacking
When unpacking, check to make sure the following parts are included.
21 20
28
27
29
20

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Assembly
1. Insert the Handle(12) into the Handle Sockets(11) and mount the Handle Sockets to the Side Panel B (1)
top using supplied-hardware.
2. Lift Side Panel B(1) all the way to expose the wire spool and Wire Feed Mechanism(14).
3. Remove the Nut from the Wire Spool Axle(30). Place the Wire Spool over the Axle with the wire
exiting the spool over the top. Refer to photos above. Replace the SpoolAxle Nut.
4. Open the Wire Feed Mechanism(14) as shown in the photo( top-right).
5. Feed and guide the spool wire into the Wire Feed Mechanism, past the feed wheels( c) , and into the
Welding Torch/ Cable (27).
It will help if the Welding Torch/Cable(27) is straightened out as much as possible. Push in until the
wire comes out the Welding Torch head. If it cannot be fed manually all the way out, it can be fed
automatically when the welding unit is powered up.
6. Close the Feed Mechanism (14) over the wire , and adjust the adjustment nut(d) IF necessary.
7. Check that +/- cables to connection Knobs(31) are correct. See photo(top-left). When using non-flux
wire and protective gas, connect wire cables as shown in photo. For 0.9 flux cored wire, no gas is
required, no gas is required. Reverse cable connections.
8. Close the Side Panel B (1).
13
f
d
b
c
15
23
3
22

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Operation
Caution : Before arc welding, read and understand all safety precautions and warnings .
1. If using non-flux core wire, connect and secure the Argon/ CO
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gas hose to the rear of the MIG
welder.( If using flux core wire, protective gas is not required.)
2. Attach the Ground Cable with Clamp(29) as close as possible to the metal object to be welded, or to
the metal work bench where the object is mounted and electrically connected.
3. Refer to the power setting table on the next page. Thinner metals use lower current. Heavier metals use
higher current.
4. Verify that the ON/OFF Switch is in the OFF position , then plug the MIG welder line cord into a
dedicated, 120VAC,20 amp line with delayed action type circuit breaker or fuses.
5. Momentarily press the Welding Torch trigger switch to test the wire feed speed. Adjust the speed by
turning the Wire Speed Control Knob.
6. Orient yourself on the area to be welded , then hold theArc Shaded Face Shield over your eyes.
Warning: Never look at the ignited arc without , arc shaded, eye protection in a full face shield . Permanent
eye damage or Blindness can occur. Skin burns can occur. Never breath arc fumes.
7. Press( and hold) the Torch Trigger Switch and stroke the area to be welded with the electrode wire to
ignite the arc.
Never tap the electrode wire into the welding surface to ignite the arc. This damages its external
coating on the electrode which prevents oxygen in the air from coming into contact with the molten
metal , causing it to oxidize.
8. Once the arc is ignited, tilt the electrode wire forward at an angle of about 35 degree. Refer to the
illustration at right.
27
29
28
21
20
18
20

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Note: If too much current is drawn from the MIG Welder , the Thermal Overload protector will activate ,
the red Overload indicator will light, and the Arc Welder will turn off until cools down. If this happens, turn
the ON/OFF Switch to the OFF position and wait about 3—5 minutes.
9. When the weld is complete , lift the Welding Torch Handle electrode wire clearly away from any
grounded object , remove your face shield , and turn the ON/OFF Switch to the OFF position.
10. Unplug the power line cord from the electrical outlet.
Maintenance
Caution: Before performing any maintenance on the MIG Welder, unplug the power line cord from the
electrical outlet.
1. Periodically using compressed air, open the top and side panels and blow out all dust from the interior.
2. Store the unit in a clean and dry location.
3. Periodically clean out the Torch Head.
NOTE: Duty Cycle : is a welding equipment specification , which defines the number of minutes , within a
10-minute period, during which a given welder can safely produce a particular welding current .
e
d
b
c
a
2
25
24
32
33

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Part List
Item No. Description Qty Item No. Description Qty
1 Upper side panel 21 Power switch
2 Rectifier 22 Base frame
3 Back panel 23 Middle partition board
4 Wire spool bolt 24 Reactor
5 Wire reel holder 25 Transformer
6 Wire spool 26 Transformer carriage
7 Adjusting spring 27 Torch
8 Washer 28 Power cable
9 Adjusting nut 29 Ground cable
10 Pin 30 Wire spool axle
11 Handle socket 31 Connection Knobs
12 Handle 32 electrograph
13 Small side panel 33 PC Board
14 Wire feeder
15 Front panel a Cover of wheel
16 Lock-cable b Rock handle
17 Copper liner c Feed wheel
18 Knob d Adjustment nut
19 Knob cover e Welding wire
20 Switch f bolt

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Welder Assembly Drawings