FAN Blade and Motor Removal, Procedure | Lincoln Electric SP-100

TROUBLESHOOTING & REPAIR

F-12

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FAN BLADE AND MOTOR REMOVAL

PROCEDURE DESCRIPTION

The following procedure will aid in the removal and replacement of the fan blade and/or fan motor. It will also provide reasonable access to the output diode heat sinks.

TOOLS REQUIRED

●5/16” nutdriver or socket wrench

●7/16” nutdriver or socket wrench

●7/16” open end wrench

●Phillips head screwdriver

●Needle nose pliers

PROCEDURE

1.Using the 5/16” nut driver, remove the three self- tapping screws holding the fan bracket to the rear panel.

Refer to Figure F-2.

2.Remove the two aluminum transformer secondary leads from the diode heat sinks.

Note: When reassembling, use Dow 340 Heat Sink Compound on connection surfaces.

3.Remove three large black leads and one small blue lead from the large choke lead.

4.Remove leads #211 and #212 from the thermostat located on the diode heat sink.

5.Remove the four leads from the fan motor noting their positions. (TWO LEADS ON CODES BELOW 9794.)

6.Remove the three wires connected to the input receptacle. Note lead placement and connections. (L1, L2, and green ground lead.)

7.Remove the four self tapping screws holding the line cord and input receptacle to the back panel.

FIGURE F.2

FIGURE F.3

Gas Solenoid

FIGURE F.4

Thermostat

Diodes

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8.Remove input receptacle.

9.Remove the two Phillips head screws holding the gas solenoid to the center baffle – See Figure F.3.

10.Remove the gas solenoid and set aside.

11.Lift up the rectifier fan motor bracket assembly and support it near the top of the machine. This should provide access to the fan blade and motor.

12.Slide the blade from the motor shaft, taking note of blade placement on motor shaft. (Shaft Indented approximately 0.10” from blade hub) -– Figure F.4.

13.Remove the two Phillips head screws holding the motor to the bracket. Remove the motor.

14.If the output diodes are to be removed, the leads must be removed from the diodes and the heat

SP-100

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Lincoln Electric SP-100 service manual FAN Blade and Motor Removal, Procedure Description, Tools Required

Contents

SP-100 Electric Shock can kill SafetyARC Rays can burn Fumes and Gases can be dangerous Welding Sparks can cause fire or explosion Cylinder may explode if damaged May be dangerous Electric and Magnetic Fields Sûreté Pour Soudage a L’Arc Précautions DE Sûreté Master Table of Contents for ALL Sections Installation Section Table of Contents Technical Specifications SP-100 Installation Read entire installation section before starting Safety PrecautionsInstallation Identify and Locate Components Select Suitable Location Work Clamp InstallationOutput Connections Tilting Connecting GUN Cable to the SP-100 GUN InstallationGAS Connection Input Connections PowerGas Solenoid Inlet Fitting Input Requirements for Maximum Output Code Requirements for Input ConnectionsRequirements for CSA Rated Output Requirements for Rated Output SP-100 Table of Contents Wear eye, ear and body protec- tion Operation Design Features Advantages Operational Features and ControlsGeneral Description Off Welding Operations Wire LoadingProcess Guidelines Sequence of Operation Refer to Figure B-4 Friction Brake Adjustments Making a Weld Shielding GAS Overload Protection SP-100 Accessories Section Replacement Parts 1ACCESSORIESLincoln GAS Regulator Kits K467 Input Line Cord Innershield Welding Kits Maintenance Section Items Requiring no Maintenance MaintenanceRoutine and Periodic Maintenance Changing Drive Roll Changing the Contact TIPLiner trim length for the Magnum 100L gun red trigger Figure D.3 SP-100 SUB Assemblies SP-100 Theory of Operation Input Line VOLTAGE, FAN Motor and Main Transformer Figure E.1 Input Power Circuits Figure E.2 Output Circuits Output CONTROL, RECTIFICA- Tion and Voltage Feedback 3THEORY of Operation TRIGGER, GAS Solenoid and Wire Drive Figure E.4 SCR Operation SCR Operation Thermostat protects the machine from Oscilloscope Waveforms Troubleshooting Section HOW to USE Troubleshooting Guide 1TROUBLESHOOTING & Repair PC Board Troubleshooting Procedures Troubleshooting & Repair Authorized Field Service Troubleshooting GuideFacility Below Code 9794 only Possible Areas of Misadjustments Problems SymptomsRecommended Course of Action Code 9794 and Above Feeding Problems Troubleshooting Guide Codes 9794 and above 6J1 10J2 1J1 1J2 Codes below SP-100 PC Board Connector Locations Scope Settings 9TROUBLESHOOTING & RepairVolts Volts/Div Normal Open Circuit Voltage Waveform Typical Output Voltage Waveform Machine Loaded Volts Abnormal Open Circuit Voltage Waveform Procedure Procedure DescriptionFAN Blade and Motor Removal Tools Required Motor Removal Procedure Wire Drive Assembly Removal1A. for Codes Above 1B. for Codes below Retest After Repair Wire Speed RangeMain Transformer Secondary Voltages Test Points Input Amps AT Rated Output Input Amps AC @ Output DC SP-100 Electrical Diagrams Section Wiring Wiring DiagramsDiagram 4 5 1 M SP-100 Wiring Diagram Codes Below Electrical Diagrams Control P.C. Board G1842 Electrical Diagrams Control P.C. Board G2314 SCR1, SCR2 SCR 81 Heatsink Asbly Control P.C. Board G2314 Error Machine Schematic Codes 9794 and Above 86R R63R64 1 5 K Machine Schematic Codes Below SVM Error Reporting Form