Lincoln Electric IM794 manual Welding Capability, Limitations, Controls and Settings

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B-2

OPERATION

B-2

Reversible, dual groove drive roll, shipped ready to feed .023"/.025" (0.6 mm) diameter wire. The drive roll is easily reversed to feed .030" (0.8 mm) diameter solid wire and .035" (0.9 mm) flux-cored diameter wire. Optional drive roll included in .045"

(1.2 mm) Innershield® welding kit must be installed to feed .045" (1.2 mm) flux-cored wire.

No external shielding gas is required when used with Lincoln .035” (0,9 mm) Innershield NR®-211- MP electrode.

Spindle accommodates both 8 in. (200 mm) diame- ter and 4 in. (100 mm) diameter spools of wire.

See Figure B.1b.

4.Circuit Breaker – Protects machine from damage if maximum output is exceeded. Button will extend out when tripped (Manual reset).

5.Gun Trigger - Activates welding output, wire feed, and gas solenoid operation. Releasing the trigger deactivates welding and simultaneously activates the “burnback” function so that the welding wire does not stick in the weld puddle.

FIGURE B.1a

WELDING CAPABILITY

The SP-170T is rated at 130 amps, 20 volts, at 20% duty cycle on a ten minute basis. It is capable of high- er output currents at lower duty cycles. .

LIMITATIONS

Arc Gouging cannot be performed with the SP-170T. The SP-170T is not recommended for pipe thawing or TIG welding.

CONTROLS AND SETTINGS

See Figure B.1a.

1.Power ON/OFF Switch — When the power is on the fan motor will run and air will be exhausted out the louvers in the front of the machine.

The welding output and wire

ON

feeder remain off until the

 

gun trigger is pressed.

 

3

1

2

SP-170 T

FIGURE B.1b

4

+

-

2.Voltage Control — A 5-posi- tion tap selector switch gives full range adjustment of power source output voltage. Do not switch while welding.

3.Wire Speed Control — Controls the wire feed speed from 50 – 400 in/min (1.2 – 10.2 m/min). The control can be preset on the dial to the setting specified on the SP- 170T Application Chart located on the inside of the wire feed section door

OFF

ARC VOLTS

WIRE SPEED

5

SP-170T

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Contents SP-170T California Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéOn-Line Product Registration Please Examine Carton and Equipment For Damage ImmediatelyTable of Contents Technical Specifications SP-170T InstallationIdentify and Locate Components Safety PrecautionsStacking Work Clamp InstallationSelect Suitable Location Output ConnectionsGAS Connection GUN InstallationWork Cable Installation Connecting Gun Cable to the SP-170TFigure A.5 Input ConnectionsLine Cord Connection Electrical Input Connection for Rated OutputVolt Input Connection General Description Saftey PrecautionsDesign Features Advantages OperationControls and Settings Welding CapabilityLimitations Wire Loading Welding OperationsSequence of Operation Wire Threading Friction Brake AdjustmentsCleaning Tip And Nozzle Process GuidelinesMaking a Weld Changing Machine Over to Feed Other Wire Sizes Welding with Gmaw MIGOverload Protection Application Chart K549-1 .035 0.9 mm Innershield Welding Kit AccessoriesOptional Accessories K586-1 Deluxe Adjustable Gas Regulator & Hose KitReplacement Parts Factory installed gun liner will feed .025-.035 0.6-0.9mmInnershield Fcaw Conversion Maintenance Maintenance Safety PrecautionsRoutine Maintenance Contact Tip Cable Liner Drive Roll GUN and Cable MaintenanceConfiguration of Components in Wire Feeding System For Magnum 100L GUNComponent Replacement Procedures Changing the Contact TIPChanging Drive Roll Liner trim length Changing LinerFigure D.3 GUN Handle PartsHOW to USE Troubleshooting Guide TroubleshootingRecommended Course of Action Problems Possible Symptoms CauseFeeding Problems Welding Problems Wiring Diagrams SP-170T Precaucion Warnung