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THREADING WELDING WIRE THROUGH THE DRIVE MOTOR TO THE WELDING GUN

This Welder uses wire sizes ranging from 0.023” to 0.035” (0.6mm to 0.9mm).  
To safely and correctly install the welding wire, follow the procedure in the  
sequence outlined below:

1. 

Turn the power switch on the Upper rear Panel to the “OFF” position and 
unplug the Welder from the power supply.

2. 

Set the Process Selector Switch 

[A]

 on the Front Panel to ‘MIG’.

3. 

Remove the contact tip and nozzle from the end of the torch.

4. 

Ensure that the drive roller is installed in the proper “face-out position”  
in accordance with the wire size being used 

(FIG 13)

.

5. 

Push the Pressure Adjuster rearward, pivot it down and out of the way  
then pivot the Tension Arm up away from the Drive Roller 

(FIG 15)

6. 

Pull out the welding wire from the wire spool carefully;  

IMPORTANT NOTE:

 Do not let go of the wire or the entire spool could unravel.

7. 

Cut off the small piece of the curved segment at the front of welding wire and 
straighten the welding wire approximately 3.0” long.

8. 

Thread the welding wire through the Guide Pipe and over the wire Drive Roller 
and into the Torch Hole 

(FIG 16)

.

9. 

Replace the Tension Arm and re-latch the Pressure Adjuster 

(FIG 17)

.

10. 

Connect the Welder to a power supply and Upper rear Panel to the  
“ON” position. Set the Wire Speed Control 

[E]

 to about “5”.

11. 

With the gun pointed away from you and others, depress the trigger to  
begin feeding wire.  

NOTE:

 The Pressure Adjuster may need to be set. To do so: 

-  Watch the drive roller to see if any slipping is occurring between the roller  
  and the wire- if so turn the machine off, unplug it and tighten the Pressure  
  Adjuster 1⁄4 turn and test again. 
-  Repeat the above step until wire is feeding smoothly with no binding  
  or slippage.

12. 

Once the wire exits the end of the torch, reinstall the contact tip and nozzle. 
Cut the wire about 1/4” from the end of the contact tip.

ELECTRIC SHOCK CAN CAUSE INJURY OR DEATH! 

  Disconnect Welder from power supply before beginning.

FIG. 16

FIG. 17

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Summary of Contents for MP140i

Page 1: ...MP140i WELDER INSTRUCTIONS Item 20559...

Page 2: ...0 Gal 5 HP Compressor Eastwood 60 Gal 4 7 HP Compressor Eastwood 60 Gal 3 7 HP Compressor Eastwood Panoramic Welding Helmet Eastwood 30 Gal 1 9 HP Compressor Eastwood XL View Welding Helmet Eastwood L...

Page 3: ...ctrode Holder with 12 5 3 8m Cable P8 1 TIG Torch with 10 3m cable 14 4 3m Gas Line P9 1 4 Gas Nozzle 1 4 P10 1 5 Gas Nozzle 5 16 P11 1 6 Gas Nozzle 3 8 Installed P12 1 Short Black Cap Installed P13 1...

Page 4: ...ponents When a safe temperature has been reached the Welder will automatically switch the Welder output back on To increase the duty cycle you can turn down the Voltage Output control Solid Stainless...

Page 5: ...sing insulating mats to prevent contact from the work surface Be sure that the work piece is properly supported and grounded prior to beginning an electric welding operation Always attach the ground c...

Page 6: ...MES AND WELDING GASES CAN BE A HEALTH HAZARD Fumes and gasses released during welding are hazardous Do not breathe fumes that are produced by the welding operation Wear an OSHA approved respirator whe...

Page 7: ...shuts it off even though trigger may remain depressed D Voltage Control Knob Controls the voltage output range for MIG 13 to 19 Volts Voltage value is indicated by the Right Digital Display LED displa...

Page 8: ...nd of the Welding Gun line into the designated socket FIG 3 IMPORTANT NOTE The Brass Body End must be fully seated against the base of the drive assembly socket or gas may either leak or not be able t...

Page 9: ...G THE SHIELDING GAS SUPPLY Shut off shielding gas supply when not in use Always ventilate confined spaces or use approved air supplied respirator Always turn your face away from valve outlet when open...

Page 10: ...over Remove the cap from the Shielding Gas Bottle Install the Regulator Knob on the Shielding Gas Regulator FIG 10 Insert the large brass male fitting on the Shielding Gas Regulator into the female f...

Page 11: ...ng Knob on the shaft Replace the Tension Arm and re latch the Pressure Adjuster INSTALLING THE WIRE SPOOL The Eastwood MP140i can be used with either a 4 or an 8 wire spool A 4 Spool fits directly on...

Page 12: ...pool could unravel 7 Cut off the small piece of the curved segment at the front of welding wire and straighten the welding wire approximately 3 0 long 8 Thread the welding wire through the Guide Pipe...

Page 13: ...areas where flammable or explosive vapors are present Do not use near combustible surfaces Remove all flammable items within 35 feet of the welding area Always keep a fire extinguisher nearby while we...

Page 14: ...ground clamp contacts are placed on a clean piece of metal free of paint grease rust oils etc It is recommended to place your ground clamp as close to the weld area as possible Assess your weld area...

Page 15: ...the heat making sure not to get one section too hot and warp the metal Once the entire weld has been completed allow the metal to cool If necessary follow up with a flap disc to grind the weld bead fl...

Page 16: ...Welder in areas where flammable or explosive vapors are present Do not use near combustible surfaces Remove all flammable items within 35 feet of the welding area Always keep a fire extinguisher nearb...

Page 17: ...Positive Connection Receptacle on the Lower Front Panel of the Welder To connect the plug align the key of the brass ferrule with the notch of the receptacle at the 12 00 position then rotate 1 2 turn...

Page 18: ...Welder Manual to reduce the possibility of electric shock Disconnect Welder from power supply before assembly disassembly or maintenance of the torch contact tip and when installing or removing nozzl...

Page 19: ...grinders sanders or other power tools used before and after the welding process Be aware of all power tool safety warnings INADEQUATE WIRING CAN CAUSE FIRE AND INJURY Verify that the facility power s...

Page 20: ...NOT INCLUDED with your Eastwood MP140i TIG Torch Kit but is necessary for TIG welding A Shielding Gas Bottle can be bought at most local Welding Supply Stores Eastwood recommends the use of 100 Argon...

Page 21: ...GSTEN To avoid contamination of the Tungsten and ultimately the weld it is imper ative to have a dedicated grinding wheel used for Tungsten grinding only A fine grit standard 6 synthetic stone grindin...

Page 22: ...able or exploding vapors and materials Do not operate electric arc Welder in areas where flammable or explosive vapors are present Do not use near combustible surfaces Remove all flammable items withi...

Page 23: ...tals such as steel and stainless steel It is also strongly recommended that the user adhere to the American Welding Society guidelines codes and applications prior to producing welds where safety is a...

Page 24: ...ect the MIG Shielding Gas line at the Quick Disconnect then insert the Quick Disconnect fitting of the Spool Gun Shielding Gas Line through the access hole at the center of the lower font panel and co...

Page 25: ...process selector switch to MIG Set the MIG Spool Gun Selector Switch A to Spool Gun on Front Panel Connect your ground clamp to the work pieces that are to be welded Make sure the ground clamp contact...

Page 26: ...d Indicator LED J will illuminate AMBER Allow the Welder to cool for a minimum of 15 minutes before attempting to resume welding TYPES OF WELD JOINTS BUTT WELD is a joint between two pieces that are l...

Page 27: ...oltage output to lower setting Fast Wire Speed Adjust wire speed to slower setting Slow Gun Travel Increase your travel speed with the Welding Gun Lack of Penetration Low Voltage Adjust voltage output...

Page 28: ...ust the flow rate of the shielding gas Check for loose fittings where gas could be leaking Contaminated Filler Metal Clean filler metal making sure to remove any oil debris or moisture Contaminated Ba...

Page 29: ...Material Reduce heat and allow more time between passes Base Metal is Absorbing Too Much Heat Preheat base metal consult welding codes for requirements Incorrect Filler Wire Use appropriate filler wir...

Page 30: ...4 B1 24V VCC G2 E1 G6 E2 1 2 3 2CN9 1 2 1CN3 1 2 3 1CN2 C3 C4 C5 VCC C2 C1 C8 C9 C6 C11 G1 G3 G5 G6 E1 E2 2 5 6 1 3 4 T1 A1 K A2 D1 A1 K A2 D2 C10 A1 K A2 D3 A1 K A2 D5 C17 CY1 CY2 DGND SGND FLQ1 RV1...

Page 31: ...To order parts and supplies 800 343 9353 eastwood com 31 NOTES...

Page 32: ...lmet 12957 Welding Helmet Bag 12589 12590 Top Grain Cowhide 4 Cuff Welding Gloves M L 12762 L XL XXL Welding Jacket 20645 Spool Gun 21525 Eastwood Tungsten Grinder 13953 Eastwood TIG Accessories Kit 2...

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