Miller M-15 Owner's Manual
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OWNER'S MANUAL
M-15, M-25, M-40, And M-40AL Guns (Euro-Connector)
1.
Specifications
ST-801 727
2.
Safety Precautions For GMAW Guns
A. Symbol Usage
Means Warning! Watch Out! There are possible hazards with this
procedure! The possible hazards are shown in the adjoining symbols.
B. GMAW Gun Hazards
WARNING
The symbols shown below are used throughout this manual to call attention to and identify possible
hazards. When you see the symbol, watch out, and follow the related instructions to avoid the hazard. The
safety information given below is only a summary of the more complete safety information found in wire
feeder and welding power source manuals. Read and follow all Safety Standards.
ELECTRIC SHOCK can kill.
1. Always wear dry insulating gloves.
2. Insulate yourself from work and ground.
3. Do not touch live electrode or electrical parts.
4. Repair or replace worn, damaged, or cracked gun
or cable insulation.
5. Turn off welding power source before changing
contact tip or gun parts.
6. Keep all covers and handle securely in place.
HOT SURFACES can burn skin.
1. Allow gun to cool before touching.
2. Do not touch hot metal.
3. Protect others from contact with hot metal.
FLYING PIECES OF METAL or DIRT can
injure eyes.
1. Wear safety glasses with side shields or face
shield.
Air-Cooled Guns For GMAW And FCAW Welding
M-15 Rated At 150 Amperes Using CO
Flux Cored Wires.
M-25 Rated At 200 Amperes Using CO
M-25 Rated At 200 Amperes Using CO
Cored Wires (Also Feeds .023 in (0.6 mm) Wire – See Parts List)
M-40 Rated At 400 Amperes Using CO
Flux Cored Wires.
M-40AL Rated At 275 Amperes Using Mixed Shielding Gas; Feeds .047 in (1.2 mm) Aluminium Wire
This group of symbols means Warning! Watch Out! Possible ELECTRIC SHOCK and HOT PARTS hazards.
Consult symbols and related instructions below for necessary actions to avoid the hazards.
October 1996
Use above FORM number when ordering extra manuals.
Shielding Gas. Feeds .023 To .035 in (0.6 To 0.9 mm) Hard Or
2
Shielding Gas. Feeds .030 To .045 (0.8 To 1.1 mm) Hard Or Flux
Shielding Gas. Feeds .030 To .045 (0.8 To 1.1 mm) Hard Or Flux
2
2
Shielding Gas. Feeds .035 To 5/64 in (0.9 To 2.0 mm) Hard Or
2
Y Marks a special safety message.
.
Means NOTE; not safety related.
WELDING WIRE can cause puncture
wounds.
1. Keep hands and body away from gun tip when
trigger is pressed.
OVERUSE can damage gun and void
warranty.
1. Follow rated duty cycle.
2. Allow cooling period.
3. Reduce current or reduce duty cycle before
starting to weld again.
1. Read and follow these instructions and all safety
blocks carefully.
2. Have only trained and qualified persons install,
operate, or service this unit.
3. Call your distributor if you do not understand the
directions.
4. For WELDING SAFETY and EMF information,
read wire feeder and welding power source
manuals.
FORM: OM-180 516A
1996 MILLER Electric Mfg. Co.

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Summary of Contents for Miller M-15

  • Page 1 OWNER’S MANUAL October 1996 FORM: OM-180 516A Use above FORM number when ordering extra manuals. M-15, M-25, M-40, And M-40AL Guns (Euro-Connector) Specifications Air-Cooled Guns For GMAW And FCAW Welding M-15 Rated At 150 Amperes Using CO Shielding Gas. Feeds .023 To .035 in (0.6 To 0.9 mm) Hard Or Flux Cored Wires.
  • Page 2: Installing Gun

    Duty Cycle is percentage of 10 minutes that gun can weld at rated load without overheating. Duty Shielding Duty Shielding Model Model Cycle Amperes Cycle Amperes M-15 M-15 Mixed Gases Mixed Gases 100% M-25 M-25 M-40 M-40 M-40AL Mixed Gases M-40AL...
  • Page 3: Removing Nozzle, Contact Tip, And Adapter, Changing Liner, And Cleaning Gun Casing

    Removing Nozzle, Contact Tip, And Adapter, Changing Liner, And Cleaning Gun Casing Y Disconnect gun first. Nozzle Contact Tip Adapter Head Check to make sure wire size Tube stamped contact matches actual wire size. Remove nozzle, contact tip, adapter, and wire outlet guide. 3/8 in Blow out gun casing.
  • Page 4 Replacing Switch And/Or Head Tube (M-15 And M-25) Y Disconnect gun first. Remove handle lock- ing nut. Slide handle. Remove switch housing. Install new switch and connect leads (polarity is not important). Reas- semble in reverse order. If replacing head tube, continue to end of figure.
  • Page 5 Replacing Head Tube (M-40) Y Disconnect gun first. Do not disturb cable connec- tion between cable connector Loosen cable connec- and connector nut. tor. Remove from vice and turn head tube out by hand. Slide handle. Secure head tube in vice. Remove switch housing.
  • Page 6: Switch Replacement

    Switch Replacement Switch Housing Screw Remove mounting screws from switch housing. Switch See Parts List for correct replacement parts. Switch Leads Carefully pull up on leads to remove switch from housing. Switch Lead Connectors Remove switch lead connectors from switch terminals and discard old switch.
  • Page 7: Troubleshooting

    10. Troubleshooting Trouble Remedy Wire does not feed. Check contact tip. Check for kinks in gun cable. Check gun trigger plug connection at welding power source/wire feeder. Check, and if necessary, replace gun trigger switch. Wire is not energized. Check contact tip. Check gun trigger plug connection at welding power source/wire feeder.
  • Page 8: Parts List

    11. Parts List ST-801 725 Figure 11-1. M-15 & M-25 Euro OM-180 516 Page 8...
  • Page 9 Item Part Description M-15 M-25 Figure 11-1. M-15 & M-25 Euro ..169 715 NOZZLE, slip type .500 orf flush ........
  • Page 10 ST-801 726 Figure 11-2. M-40 Euro OM-180 516 Page 10...
  • Page 11 Item Part Description Quantity Figure 11-2. M-40 Euro ♦+169 724 ..NOZZLE, slip type .500 orf .125 recess ....... . .
  • Page 12 Notes OM-180 516 Page 12...

This manual is also suitable for:

M-25M-40M-40al

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