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OM-283007 Page 2

Welding produces fumes and gases. Breathing

these fumes and gases can be hazardous to your

health.

FUMES AND GASES can be hazardous.

D

Keep your head out of the fumes. Do not breathe the fumes.

D

Ventilate the work area and/or use local forced ventilation at the arc

to remove welding fumes and gases. The recommended way to

determine adequate ventilation is to sample for the composition

and quantity of fumes and gases to which personnel are exposed.

D

If ventilation is poor, wear an approved air-supplied respirator.

D

Read and understand the Safety Data Sheets (SDSs) and the

manufacturer’s instructions for adhesives, coatings, cleaners,

consumables, coolants, degreasers, fluxes, and metals.

D

Work in a confined space only if it is well ventilated, or while

wearing an air-supplied respirator. Always have a trained watch-

person nearby. Welding fumes and gases can displace air and

lower the oxygen level causing injury or death. Be sure the breath-

ing air is safe.

D

Do not weld in locations near degreasing, cleaning, or spraying op-

erations. The heat and rays of the arc can react with vapors to form

highly toxic and irritating gases.

D

Do not weld on coated metals, such as galvanized, lead, or

cadmium plated steel, unless the coating is removed from the weld

area, the area is well ventilated, and while wearing an air-supplied

respirator. The coatings and any metals containing these elements

can give off toxic fumes if welded.

Arc rays from the welding process produce intense

visible and invisible (ultraviolet and infrared) rays

that can burn eyes and skin. Sparks fly off from the

weld.

D

Wear an approved welding helmet fitted with a proper shade of

filter lenses to protect your face and eyes from arc rays and

sparks when welding or watching (see ANSI Z49.1 and Z87.1

listed in Safety Standards).

D

Wear approved safety glasses with side shields under your

helmet.

D

Use protective screens or barriers to protect others from flash,

glare and sparks; warn others not to watch the arc.

D

Wear body protection made from durable, flame

resistant mate-

rial (leather, heavy cotton, wool). Body protection includes

oil-free clothing such as leather gloves, heavy shirt, cuffless

trousers, high shoes, and a cap.

ARC RAYS can burn eyes and skin.

Welding on closed containers, such as tanks,

drums, or pipes, can cause them to blow up. Sparks

can fly off from the welding arc. The flying sparks, hot

workpiece, and hot equipment can cause fires and

burns. Accidental contact of electrode to metal objects can cause

sparks, explosion, overheating, or fire. Check and be sure the area is

safe before doing any welding.

WELDING can cause fire or explosion.

D

Remove all flammables within 35 ft (10.7 m) of the welding arc. If

this is not possible, tightly cover them with approved covers.

D

Do not weld where flying sparks can strike flammable material.

D

Protect yourself and others from flying sparks and hot metal.

D

Be alert that welding sparks and hot materials from welding can

easily go through small cracks and openings to adjacent areas.

D

Watch for fire, and keep a fire extinguisher nearby.

D

Be aware that welding on a ceiling, floor, bulkhead, or partition can

cause fire on the hidden side.

D

Do not cut or weld on tire rims or wheels. Tires can explode if heat-

ed. Repaired rims and wheels can fail. See OSHA 29 CFR

1910.177 listed in Safety Standards.

D

Do not weld on containers that have held combustibles, or on

closed containers such as tanks, drums, or pipes unless they are

properly prepared according to AWS F4.1 and AWS A6.0 (see

Safety Standards).

D

Do not weld where the atmosphere can contain flammable dust,

gas, or liquid vapors (such as gasoline).

D

Connect work cable to the work as close to the welding area as

practical to prevent welding current from traveling long, possibly

unknown paths and causing electric shock, sparks, and fire

hazards.

D

Do not use welder to thaw frozen pipes.

D

Remove stick electrode from holder or cut off welding wire at

contact tip when not in use.

D

Wear body protection made from durable, flame

resistant material

(leather, heavy cotton, wool). Body protection includes oil-free

clothing such as leather gloves, heavy shirt, cuffless trousers, high

shoes, and a cap.

D

Remove any combustibles, such as a butane lighter or matches,

from your person before doing any welding.

D

After completion of work, inspect area to ensure it is free of sparks,

glowing embers, and flames.

D

Use only correct fuses or circuit breakers. Do not oversize or by-

pass them.

D

Follow requirements in OSHA 1910.252 (a) (2) (iv) and NFPA 51B

for hot work and have a fire watcher and extinguisher nearby.

D

Read and understand the Safety Data Sheets (SDSs) and the

manufacturer’s instructions for adhesives, coatings, cleaners,

consumables, coolants, degreasers, fluxes, and metals.

FLYING METAL or DIRT can injure eyes.

D

Welding, chipping, wire brushing, and grinding

cause sparks and flying metal. As welds cool,

they can throw off slag.

D

Wear approved safety glasses with side

shields even under your welding helmet.

 BUILDUP OF GAS can injure or kill.

D

Shut off compressed gas supply when not in use.

D

Always ventilate confined spaces or use

approved air-supplied respirator.

ELECTRIC AND MAGNETIC FIELDS (EMF)
can affect Implanted Medical Devices.

D

Wearers of Pacemakers and other Implanted

Medical Devices should keep away.

D

Implanted Medical Device wearers should consult their doctor

and the device manufacturer before going near arc welding,  spot

welding, gouging, plasma arc cutting, or induction heating

operations.

Noise from some processes or equipment can

damage hearing.

D

Wear approved ear protection if noise lev-

el is high.

NOISE can damage hearing.

Содержание Handler 125

Страница 1: ...www HobartWelders com Description OM 283007B 2019 05 Processes File MIG GMAW Arc Welding Power Source And Wire Feeder Flux Cored FCAW Welding Handler 125 MIG GMAW Welding ...

Страница 2: ... 1 Serial Number And Rating Label Location 10 4 2 Unit Specifications 10 4 3 Environmental Specifications 10 4 4 Duty Cycle And Overheating 11 4 5 Volt Ampere Curves 11 SECTION 5 INSTALLATION 12 5 1 Selecting A Location 12 5 2 Installing Work Clamp 12 5 3 Process Polarity Table 13 5 4 Changing Polarity 13 5 5 Installing Wire Spool And Adjusting Hub Tension 13 5 6 Installing Gas Supply 14 5 7 Conne...

Страница 3: ... electrically hazardous conditions are present in damp locations or while wearing wet clothing on metal structures such as floors gratings or scaffolds when in cramped positions such as sitting kneeling or lying or when there is a high risk of unavoid able or accidental contact with the workpiece or ground For these conditions use the following equipment in order presented 1 a semiautomatic DC con...

Страница 4: ...not possible tightly cover them with approved covers D Do not weld where flying sparks can strike flammable material D Protect yourself and others from flying sparks and hot metal D Be alert that welding sparks and hot materials from welding can easily go through small cracks and openings to adjacent areas D Watch for fire and keep a fire extinguisher nearby D Be aware that welding on a ceiling fl...

Страница 5: ...to move unit be sure forks are long enough to extend beyond opposite side of unit D Keep equipment cables and cords away from moving vehicles when working from an aerial location D Follow the guidelines in the Applications Manual for the Revised NIOSH Lifting Equation Publication No 94 110 when manu ally lifting heavy parts or equipment OVERUSE can cause OVERHEATING D Allow cooling period follow r...

Страница 6: ... George Carter Way Suite 103 Chantilly VA 20151 phone 703 788 2700 website www cga net com Safety in Welding Cutting and Allied Processes CSA Standard W117 2 from Canadian Standards Association Standards Sales 5060 Spectrum Way Suite 100 Mississauga Ontario Canada L4W 5NS phone 800 463 6727 website www csagroup org Safe Practice For Occupational And Educational Eye And Face Protec tion ANSI Standa...

Страница 7: ... nécessaire se servir de la fonction de télécommande si l appareil en est équipé D D autres consignes de sécurité sont nécessaires dans les condi tions suivantes risques électriques dans un environnement humideou si l on porte des vêtements mouillés sur des structures métalliquestelles que sols grilles ou échafaudages en position coincée comme assise à genoux ou couchée ou s il y a un risque élevé...

Страница 8: ...udure La projection d étincelles des pièces chaudes et des équipements chauds peut provoquer des incen dies et des brûlures Le contact accidentel de l électrode avec des objets métalliques peut provoquer des étincelles une explosion un sur chauffement ou un incendie Avant de commencer le soudage vérifier et s assurer que l endroit ne présente pas de danger D Déplacer toutes les substances inflamma...

Страница 9: ...e mettre l appareil en service LA CHUTE DE L ÉQUIPEMENT peut provoquer des blessures D Utiliser l anneau de levage uniquement pour soulever l appareil NON PAS les chariots les bouteilles de gaz ou tout autre accessoire D Utilisez les procédures correctes et des équipements d une capa cité appropriée pour soulever et supporter l appareil D En utilisant des fourches de levage pour déplacer l unité s...

Страница 10: ...g Society Standard AWS A6 0 from Global Engineering Documents phone 1 877 413 5184 website www global ihs com National Electrical Code NFPA Standard 70 from National Fire Protec tion Association Quincy MA 02169 phone 1 800 344 3555 website www nfpa org and www sparky org Safe Handling of Compressed Gases in Cylinders CGA Pamphlet P 1 from Compressed Gas Association 14501 George Carter Way Suite 10...

Страница 11: ...tz Input Input Voltage Output Single Phase Transformer Rectifier Off On Work Connection Flux Cored Arc Welding FCAW FCAW Gun With Switch Do Not Switch While Welding Wire Feed Circuit Breaker Increase Percent Protective Earth Ground Temperature Indication Line Connection s Suitable For Welding In An Environment With Increased Risk Of Electric Shock X Duty Cycle I1 Rated Supply Current I2 Rated Weld...

Страница 12: ...ions 80 A 18 Volts DC 25 Duty Cycle 55 A 16 75 Volts DC 60 Duty Cycle 40 A 16 Volts DC 100 Duty Cycle 25 130 28 5 21 3 2 59 2 23 57 5 lb 26 kg Length 19 4 in 493 mm Width 10 in 254 mm Height 13 1 2 in 343 mm Wire Type And Diameter Flux Cored Solid Wire Wire Feed Speed Range 030 035 in 0 8 0 9 mm 024 030 in 0 61 0 762 mm 88 545 ipm 2 2 13 8 mpm 4 3 Environmental Specifications A IP Rating IP Rating...

Страница 13: ...ntinuous Welding 2 Minutes Welding 8 Minutes Resting Overheating 0 15 A or V OR Reduce Duty Cycle Minutes 25 duty cycle at 80 amps Weld Amperes Duty Cycle 6 Minutes Welding 4 Minutes Resting rduty1 2013 04 284617 A 60 duty cycle at 50 amps 100 duty cycle at 40 amps 0 10 20 30 40 50 60 70 80 90 100 25 45 65 85 105 125 145 4 5 Volt Ampere Curves The volt ampere curves show the volt age and amperage ...

Страница 14: ...in 460 mm 1 5 2 Installing Work Clamp Connectionhardware must be tight ened with proper tools Do not just hand tighten hardware A loose electrical connection will cause poor weld performance and exces sive heating of the work clamp 1 Work Clamp 2 Work Cable From Unit 3 Insulator Grip Slide one insulating grip over work cable before connecting to clamp 4 Nut 5 Lock Washer 6 Flat Washer 7 Screw 8 Wo...

Страница 15: ... cable is connected to the positive output Work cable is connected to the nega tive output 5 4 Changing Polarity 1 Lead Connections For Direct Current Electrode Negative DCEN 2 Lead Connections For Direct Current Electrode Positive DCEP Always read and follow wire manufacturer s recommended po larity and see Section 5 3 Close door Ref 210428 1 2 FCAW GMAW 5 5 Installing Wire Spool And Adjusting Hu...

Страница 16: ...low rate should be set when gas is flowing through welding power source and welding gun Turn Range switch to Purge or Fan Only position Press gun trigger to start gas flow Typical flow rate is 20 cfh cubic feet per hour Check wire manufacturer s recommended flow rate Tools Needed 802028 Ref 803379 A 11 16 1 1 8 in 6 4 5 7 1 2 3 Shielding Gas 5 7 Connecting 120 Volt Input Power Installation must me...

Страница 17: ...ire only Narrow design allows access in tight spaces and provides better visibility of puddle during welding Use with solid or flux cored wire Push nozzle over contact tip and adapter until it is seated onto adapter Contact tip will be exposed approximately 7 16 in 11 3 mm when installed properly Push nozzle over contact tip and adapter until it is seated onto adapter End of contact tip will be fl...

Страница 18: ...enough to prevent slipping Cut off wire Close door Press gun trigger until wire comes out of gun 2 Turn power on 6 in 150 mm Tighten Tighten Be sure that wire is positioned in proper feed roll groove Close and tighten pressure assembly and let go of wire Be sure that contact tip matches wire diameter Reinstall tip adapter if applicable contact tip and nozzle 3 5 4 Tip adapter may also require remo...

Страница 19: ... a wire feed speed See weld setting label in welding power source or in Section 6 3 3 Power Switch Use switch to turn unit on and off 4 Over Temperature Light If unit overheats light turns on and output stops Allow unit to cool be fore attempting to weld Light goes out when unit has cooled and welding can resume Ref 284198 A 1 2 3 4 6 2 Operating The Gun Ref 804240 A 1 Trigger Switch Press and hol...

Страница 20: ...OM 283007 Page 18 6 3 Weld Parameter Chart 283081 B ...

Страница 21: ...air Or Replace Cracked Weld Cable 6 Months OR Drive Rolls Inside Unit 7 2 Overload Protection 161066 1 Supplementary Protector CB1 CB1 protects unit from overload If CB1 opens unit shuts down Reset supplementary protector 1 7 3 Replacing Gun Contact Tip Tools Needed Ref 804241 A Turn Off power before replacing contact tip 1 Nozzle Remove nozzle 2 Contact Tip 3 Tip Adapter Cut off welding wire at c...

Страница 22: ...ing Reinstall plate and tighten screws 7 Retaining Knob Rotate counterclockwise and remove knob 8 Drive Roll The drive roll consists of two different sized grooves Each side is stamped with the proper size Select the groove that matches the wire size on the wire spool Install drive roll onto motor shaft so that correct groove size stamp faces out away from drive housing 9 Retaining Knob Opening In...

Страница 23: ...ut liner Remove nozzle Cut off wire at contact tip and remove contact tip and tip adapter Reassemble drive cover and gun in reverse order from taking it apart Thread wire according to Section 5 9 Open pressure assembly Retract wire from liner onto spool Hold wire tightly to keep it from unraveling Secure end of wire at spool Remove four screws from cover and remove cover from wire drive assembly 8...

Страница 24: ...own cable and top ring forward over head tube Separate gun handle halves Loosen liner setscrew Loosen and remove retaining nut from liner Pull liner out of gun cable If necessary twist cable to ease removal Turn Off welding power source Install retaining nut on one end of liner Lay gun cable straight on a flat surface Insert bare end of liner end without retaining nut into wire drive end of cable ...

Страница 25: ... liner after cutting to length 3 8 in 10 mm Reassemble gun by placing head tube and cable into one half of handle Be sure trigger is properly installed into trigger slot Thread welding wire through gun see Section 5 9 Reinstall adapter contact tip and nozzle Reinstall cover onto wire drive assembly and secure with four screws Insert retaining nut into adapter and adjust liner stickout as shown Tig...

Страница 26: ...ee Section 5 2 Replace contact tip see Section 7 3 Check that polarity leads are connected Low weld output Connect unit to proper input voltage or check for low line voltage Place voltage switch in desired position see Section 6 1 Check cable connection at work clamp and tighten hardware if necessary see Section 5 2 If using an extension cord check that wire size and length is the proper size for ...

Страница 27: ...OM 283007 Page 25 SECTION 8 ELECTRICAL DIAGRAM 284646 A Figure 8 1 Circuit Diagram ...

Страница 28: ...re welding on a vehicle Place work clamp as close to the weld as possible Appearance of actual unit may differ from that shown Workpiece Gun Work Clamp Weld current can damage electronic parts in vehicles Disconnect both battery cables before welding on a vehicle Place work clamp as close to the weld as possible Appearance of actual unit may differ from that shown 9 2 Typical GMAW MIG Process Conn...

Страница 29: ...ols weld penetration See table below 4 Select Voltage Voltage controls height and width of weld bead Low Voltage wire stubs into work High Voltage arc is unstable spatter Set voltage midway between high and low voltage 1 16 or 0 0625 in 2 1 9 3 Typical Control Settings Wire Size Amperage Range Recommended Wire Feed Speed Wire Feed Speed 0 024 in 0 61 mm 30 90 A 3 5 in 89 mm per amp 3 5 x 62 5 A 21...

Страница 30: ...y on seam 1 Hold Gun and Control Gun Trigger 2 Workpiece 3 Work Clamp 4 Electrode Extension Stickout Solid Wire 3 8 to 1 2 in 9 to 13 mm Flux Cored Wire 1 2 to 5 8 in 13 to 16 mm 5 Cradle Gun and Rest Hand on Workpiece 2 3 5 4 90 90 0 15 45 45 1 0 15 S 0421 A End View of Work Angle Side View of Gun Angle Groove Welds End View of Work Angle Side View of Gun Angle Fillet Welds 9 4 Holding And Positi...

Страница 31: ...mal Fast Electrode directed ahead of bead Electrode pointed back into bead Direction Of Welding The Drag or Pull technique is generally recommended when welding with flux cored tubular wire Weld bead shape depends on gun angle direction of travel electrode extension stick out travel speed thickness of base metal wire feed speed weld current and voltage 9 5 Conditions That Affect Weld Bead Shape Gu...

Страница 32: ...se weave patterns to cover a wide area in one pass of the electrode S 0054 A 3 1 2 9 6 Gun Movement During Welding 9 7 Poor Weld Bead Characteristics 1 Large Spatter Deposits 2 Rough Uneven Bead 3 Slight Crater During Welding 4 Bad Overlap 5 Poor Penetration 5 4 2 3 1 S 0053 A 9 8 Good Weld Bead Characteristics 1 Fine Spatter 2 Uniform Bead 3 Moderate Crater During Welding Weld a new bead or layer...

Страница 33: ... wire and change to correct polarity at welding power source 9 10 Troubleshooting Porosity Porosity small cavities or holes resulting from gas pockets in weld metal S 0635 Possible Causes Corrective Actions Insufficient shielding gas at welding arc GMAW Increase flow of shielding gas at regulator flowmeter and or prevent drafts near welding arc Remove spatter from gun nozzle Check gas hoses for le...

Страница 34: ...c on leading edge of weld puddle Be sure welding wire extends not more than 1 2 in 13 mm beyond nozzle Insufficient heat input Select higher wire feed speed and or select higher voltage range Reduce travel speed Incorrect polarity Check polarity required by welding wire and change to correct polarity at welding power source 9 13 Troubleshooting Incomplete Fusion Incomplete Fusion failure of weld m...

Страница 35: ...ses Corrective Actions Welding wire extends too far out of nozzle Be sure welding wire extends not more than 1 2 in 13 mm beyond nozzle Unsteady hand Support hand on solid surface or use two hands 9 16 Troubleshooting Distortion Distortion contraction of weld metal during welding that forces base metal to move Base metal moves in the direction of the weld bead S 0642 Possible Causes Corrective Act...

Страница 36: ...wire feed rolls Dirty or damaged kinked liner Replace liner Wire feeds but no gas flows GMAW Gas cylinder empty Replace empty gas cylinder Gas nozzle plugged Clean or replace gas nozzle Gas cylinder valve not open or flowmeter not adjusted Open gas valve at cylinder and adjust flow rate Restriction in gas line Check gas hose between flowmeter and wire feeder and gas hose in gun and cable assembly ...

Страница 37: ...lacement Gun 8 ft 2 4 m length 030 035 0 8 0 9 mm Wire Size 268546 770198 Regulator Flowmeter For Argon and Argon mixed shielding gas Use with replace ment hose 269815 Available at farm and tool supply retailers Available at Hobart Miller welding distributors 10 3 Consumables Item Hobart Package Part No Miller Package Part No Contact Tips 023 025 in 0 6 mm 770174 5 per package 087299 10 per packag...

Страница 38: ...Notes ...

Страница 39: ...the product they are installed in or for a minimum of one year whichever is greater HF Units MIG Guns TIG Torches Motor Driven Guns Plasma Cutting Torches Relays Remote Controls Replacement Parts No labor 90 days Running Gear Trailers Water Cooling Systems Spoolguns 4 6 Months Parts Batteries 5 Engines and tires are warranted separately by the manufacturer Hobart s 5 3 1 Limited Warranty shall not...

Страница 40: ...LC 2019 01 Miller Electric Mfg LLC An Illinois Tool Works Company 1635 West Spencer Street Appleton WI 54914 USA For Assistance Call 1 800 332 3281 Model Name Serial Style Number Purchase Date Date which equipment was delivered to original customer Distributor Address City State Zip Please complete and retain with your personal records Owner s Record Thank you for purchasing Hobart Our trained tec...

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