Hobart Welding Products 187 manual Thread wire according to

Page 30

7-5. Changing Nozzle, Contact Tip, Adapter And Liner, And Cleaning Gun Casing

		!	Turn	off	welding	power
			source.
		1	Nozzle
2	3	2	Contact Tip
	3

	Head	3 Tip Adapter
	Head	. Wire size stamped on tip − check
	Tube	. Wire size stamped on tip − check
	1	and match wire size.

8 mm	Cut off wire and
8 mm	disconnect gun
Remove nozzle,	from feeder.
Remove nozzle,
contact tip, and
adapter.

Unscrew and remove liner.

Blow out gun casing.

5/8 in. (16 mm)

Liner

Stickout

Tools Needed:

Lay gun cable out straight before installing new liner.

10 mm

Reassemble gun in reverse order from taking it apart.

Install

Liner

.Thread wire according to

welding power source/wire feeder manual.

8 mm, 10 mm

246 669-A

OM-228 187 Page 26

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Contents Description OM-228 187BProcesses 2010−01From Hobart to You Protect Your InvestmentTable of Contents − Parts List Electric Shock can kill Symbol UsageArc Welding Hazards HOT Parts can burnWelding can cause fire or explosion Fumes and Gases can be hazardousARC Rays can burn eyes and skin Flying Metal or Dirt can injure eyesFalling Equipment can injure Welding Wire can injureFire or Explosion hazard Moving Parts can injureEMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings About Implanted Medical DevicesSymboles utilisés UNE Décharge Électrique peut entraîner la mortLES Pièces Chaudes peuvent provoquer des brûlures LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut provoquer un incendie ou une explosion Risque D’INCENDIE OU LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées LA Chute DE L’ÉQUIPEMENT peut provoquer des blessuresLES Fils DE Soudage peuvent provoquer des blessures Proposition californienne 65 AvertissementsLes Pièces Mobiles peuvent causer des blessures LE Soudage À L’ARC risque de provoquer des interférencesPrincipales normes de sécurité Informations relatives aux CEMEn ce qui concerne les implants médicaux OM-228 187 Specifications − SpecificationsSymbols And Definitions − DefinitionsAmperes Duty Cycle And OverheatingVolt-Ampere Curves Output− Installation Installing Nozzle, Contact Tip, And AdapterInstalling Welding Gun Installing Work Clamp Turn off welding power source Process/Polarity TableChanging Polarity Installing Gas Supply Selecting a Location And Connecting Input Power Electrical Service Guide Installing Wire Spool And Adjusting Hub TensionThreading Welding Wire Hold wire tightly to keep it from unraveling− Operation ControlsOM-228 187 Weld Parameter Chart CFH227010 Overload Protection − Maintenance & TroubleshootingRoutine Maintenance Drive Motor ProtectionChanging Drive Roll Or Wire Inlet Guide Thread wire according to Replacing Switch And/Or Head Tube Troubleshooting Table Trouble RemedyOM-228 187 − Electrical Diagram Circuit Diagram228 180-A − MIG Welding Gmaw Guidelines Typical MIG Process ConnectionsTypical MIG Process Control Settings Wire Size Amperage RangeSelect Voltage Holding And Positioning Welding Gun Groove WeldsConditions That Affect Weld Bead Shape Poor Weld Bead Characteristics Good Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Excessive Penetration Troubleshooting − Excessive SpatterTroubleshooting − Porosity Possible Causes Corrective ActionsTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Burn-Through Troubleshooting − Waviness Of Bead Troubleshooting − DistortionTroubleshooting Guide For Semiautomatic Welding Equipment Common MIG Shielding GasesApplication Welding arc not stable Wire slipping in drive rolls − Parts List Main AssemblyDia Part Description Quantity 228 H100S2-10 Gun 245Optional Drive Rolls OptionsService SupportAssistance Contact your Distributor for Hobart Welding Products