Hobart Welding Products 250 installation instructions Front Panel w/Components

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	2	. Hardware is common and
	2	not available unless listed.
		not available unless listed.
1		3

4

5

11

6

10

9

8

7

						802 282-F
					Figure 8-4. Front Panel w/Components
Item			Dia.	Part	Description	Quantity
	No.		Mkgs.	No.	Description	Quantity
					Figure 8-4. Front Panel w/Components (Fig 8-1Item 17)

. . . 1		. . .	. . . . . . . . . .	143 974 . .	HANDLE	. . . 1
. . .	2	. . .	. . . . . . . . . .	206 589 . .	PANEL, front	. . . 1
. . .	3	. . .	. . . . . . . . . .	207 074 . .	HANDLE, switch	. . . 1
. . .	. . .	. . .	. . . . . . . . . .	136 343 . .	SCREW, K50X 20 pan hd−phl stl pld pt thread forming	. . . 1
. . . 4		. . .	. . . . . . . . . .	207 077 . .	KNOB	. . . 1
. . .	5	. . .	. . . . . . . . . .	208 207 . .	POTENTIOMETER, CP flat 1/T 2W 1K linear (wire feed speed) . . . .	. . . 1
. . .	6	. . . . . S2 . . . .		226 602 . .	SWITCH, selector 7 position	. . . 1
. . .	. . .	. . .	. . . . . . . . . .	228 166 . .	SCREW, 010−24X2.00 pan hd−phl stl pld trilob thdfmg	. . . 3
. . . 7 . . . . . S1				124 511 . .	SWITCH, tgl DPST 40A 600 VAC	. . . 1
. . .	8	. . .	. . . . . . . . . .	170 647 . .	BUSHING, snap-in nyl	. . . 1
. . .	9	. . .	. . . . . . . . . .	204 413 . .	BUSHING, snap-in nyl	. . . 1
. . . 10		. . .	. . . . . . . . . .	048 282 . .	RECEPTACLE W/SOCKETS	. . . 1
. . . 11		. . .	. . . . . . . . . . .	. . . . . . . . . .	LABEL, nameplate (order by model and serial no.)	. . . 1

To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested Replacement Parts. Model and serial number required when ordering parts from your local distributor.

OM-192 440 Page 47

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Contents File MIG Gmaw OM-192 440WProcesses DescriptionFrom Hobart to You Table of Contents Warranty Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesCalifornia Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers UNE Décharge Électrique peut entraîner la mort LES Fumées ET LES GAZ peuvent être dangereuxIndique un message de sécurité particulier DES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer unIncendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut SUREn ce qui concerne les stimulateurs cardiaques Principales normes de sécuritéOverheating SpecificationsWelding Power Source Duty Cycle And Overheating Exceeding duty cycle can damage unit and void warrantyWelding Gun Duty Cycle And Overheating Volt-Ampere CurvesDefinition Installing Welding Gun Installing Work Clamp Connecting To Weld Output TerminalsInstalling Wire Spool And Adjusting Hub Tension Setting Gun Polarity For Wire TypeRear Panel Installing Gas SupplyVolts Positioning Jumper LinksMin Grounding Conductor Size In AWG Electrical Service GuideHz Single Input VoltageSelecting a Location And Connecting Input Power Wood Threading Welding WireOperation Turn Off unit, and disconnect input powerTurn Off unit Connecting Spool Gun To Welding Power SourceControls − OperationVoltage switch position Weld ParametersWhile welding To read settings Example 2/40 =Number on left of slash Months Routine MaintenanceDisconnect power before maintaining Supplementary ProtectorsReplacing Drive Roll And Wire Inlet Guide Turn Off powerRemoving Knob From Front Panel Replacing Gun Contact Tip Turn Off power before replacing contact tipWire size stamped on tip − check and match wire size Turn off welding power source/wire feederReplacing Switch And/Or Head Tube Welding Trouble Remedy Welding Troubleshooting TableWire Drive/Gun Troubleshooting Table Wire Drive/Gun Trouble RemedyTypical MIG Process Connections − MIG Welding Gmaw GuidelinesAmperage Typical MIG Process Control SettingsWire Size Amperage Range Thickness to Amperage aHolding And Positioning Welding Gun Conditions That Affect Weld Bead Shape Poor Weld Bead Characteristics Good Weld Bead CharacteristicsGun Movement During Welding Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Excessive PenetrationTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Burn-Through Troubleshooting − Distortion Troubleshooting − Waviness Of BeadApplication Troubleshooting Guide For Semiautomatic Welding EquipmentWire does not feed Common MIG Shielding GasesWelding arc not stable Wire slipping in drive rolls OM-192 440 − Electrical Diagram − Parts List REGULATOR/FLOWMETER, 10−50 CFH ARGON/CO2 Center Baffle w/Components Center Baffle w/Components -1Item Rear Panel w/Components Front Panel w/Components M-25 Gun Description Remarks Optional Spool Gun SwitchPage Service SupportAssistance Hobart Welding Products Contact your Distributor for