Miller Electric M-40 Owner's Manual
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Miller Electric M-40 Owner's Manual

Miller Electric M-40 Owner's Manual

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M-40, M-40AL
OM 1036
169 964
March 1996
Processes
MIG (GMAW) Welding
Flux Cored (FCAW) Welding
Description
Air-Cooled Gun

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Summary of Contents for Miller Electric M-40

  • Page 1 OM 1036 169 964 March 1996 Processes MIG (GMAW) Welding Flux Cored (FCAW) Welding Description Air-Cooled Gun M-40, M-40AL Visit our website at www.MillerWelds.com...
  • Page 2 Welding Process Manuals such as SMAW, GTAW, GMAW, and GMAW-P. Miller Electric manufactures a full line of welders and welding related equipment. For information on other quality Miller products, contact your local Miller distributor to receive the latest full line catalog or individual catalog sheets.

  • Page 3: Emf Information

    SAFETY PRECAUTIONS FOR GMAW GUNS WARNING GMAW WELDING can be hazardous. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHILDREN AWAY. PACEMAKER WEARERS KEEP AWAY UNTIL CONSULTING YOUR DOCTOR. In welding, as in most jobs, exposure to certain hazards occurs. Welding is safe when precautions are taken. The safety information given below is only a summary of the more complete safety information found in the wire feeder and welding power source Owner’s Manuals.

  • Page 5: Section 1 - Safety Information

    15 ft Gun – Net: 9.9 lb (4.5 kg); Ship: 11.4 lb (5.2 kg) *With proper consumables, .047 (1.2 mm) aluminium wire can be used in M-40 models, and .035 to 5/64 in (0.9 to 2.0 mm) hard or flux cored wire can be used in M-40AL models (see Parts List for consumables).

  • Page 6: Duty Cycle

    M-40: 100% Duty Cycle At 400 Amperes Using CO M-40: 60% Duty Cycle At 525 Amperes Using CO *M-40: 100% Duty Cycle At 275 Amperes Using Mixed Gases *M-40: 60% Duty Cycle At 400 Amperes Using Mixed Gases Continuous Welding...

  • Page 7: Section 4 - Operation

    SECTION 4 – OPERATION READ SAFETY BLOCKS at beginning WARNING of manual before proceeding. 4-1. Operating The Gun Trigger Switch When pressed, energized wire feeds and shielding gas flows. Ref. ST-800 749-A Figure 4-1. Using Gun Switch SECTION 5 – MAINTENANCE & TROUBLESHOOTING READ SAFETY BLOCKS at beginning WARNING of manual before proceeding.
  • Page 8 Table 5-1. Troubleshooting Trouble Remedy Section 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.
  • Page 9 B. Changing Liner CAUTION FLYING METAL CHIPS AND DIRT can cause injury and damage equipment. • Point gun away from people and in a safe direction when blowing out with compressed air. Tools Needed: Turn off welding power source/wire feeder. 7/16 in 7/16 in Head...
  • Page 10 Replacing Head Tube Turn off welding power source/wire feeder. 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 11: Switch Replacement

    5-3. Switch Replacement Switch Housing Turn off welding power source/wire feeder and, disconnect gun. Screw Remove both mounting screws from switch housing. Switch Switch Leads See Parts List for correct replacement parts. Carefully pull up on leads to remove switch from housing. Switch Lead Connectors Remove switch lead connectors from switch terminals and discard...

  • Page 12: Section 6 - Parts List

    SECTION 6 – PARTS LIST ST-800 748-A Figure 6-1. M-40 & M-40AL Gun OM-1036 Page 8...
  • Page 13 Item Part Description Quantity Figure 6-1. M-40 & M-40AL Gun ... . +169 724 NOZZLE, slip type .500 orf .125 recess ....... .
  • Page 14 Notes...
  • Page 15 Call LIMITED WARRANTY – Subject to the terms and conditions APT, ZIPCUT & PLAZCUT Model Plasma Cutting below, Miller Electric Mfg. Co., Appleton, Wisconsin, warrants Torches 1-800-4-A-MILLER to its original retail purchaser that new Miller equipment sold...

  • Page 16: Owner's Record

    Contact the Delivering Carrier for: File a claim for loss or damage during shipment. For assistance in filing or settling claims, contact your distributor and/or equipment manufacturer’s Transportation Department.  PRINTED IN USA 2000 Miller Electric Mfg. Co. 6/00...

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M-40al

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