Lincoln Electric R3R 600-I manual Checking Current Control Rheostat on Machine

Page 22

E-9

TROUBLESHOOTING

E-9

 

 

 

3.If the needle stays to the right, the capacitor is shorted and the assembly is defective.

4.If the needle does not move, the capacitor is open and the assembly is defective.

G.CHECKING CURRENT CONTROL RHEOSTAT ON MACHINE

1.Turn machine off.

2.Remove the control panel screws and open the front cover.

3.Turn the current control switch to remote.

4.Disconnect the harness plug from the control board.

5.Put current range switch to B range.

6.With an ohmmeter on X1K, connect it to lead 210 and 211 on SW #2. Rotate the current con- trol rheostat. The resistance reading should be from around zero to 10K ohms. Check the resis- tance reading between 75 on the terminal strip (codes below 9500) or Amphenol (codes above 9500), and 211 on SW #2. The reading must be 10K ohms. No reading will indicate an open rheostat and low reading will indicate a shorted or partially shorted rheostat; in either case, replace.

H.TOGGLE SWITCH CHECK

1.Turn off the machine power input. SW-1 has 110 volts across it when the input power is connect- ed.

2.Isolate the switch to be tested by removing all connecting leads.

3.Check to make sure the switch is making con- nections with a VOLT meter. The meter should read zero resistance.

4.Put the ohmmeter on X1K scale and measure the resistance between the terminal and the case of the machine (touch a self-tapping screw). Reading should be infinite.

5.If either step (3) or step (4) fails, replace the switch.

I. REMOTE CONTROL CHECK

For codes above 9500, the remote control Amphenol pin assignments are: pin C-75, pin B-76, and pin A-77. Disconnect the remote field control and connect an ohmmeter across 75 and 76 and rotate the rheostat in the remote control. The resis- tance reading should go from zero to 10K ohms. Repeat with triplet across 77 and 76 with same results. Connect ohmmeter across 75 and 77. The reading should be 10K ohms. A lower reading will indicate a shorted or partially shorted rheostat. A very high reading will indicate an open rheostat. In either of the last two cases, replace rheostat. Check cable for any physical damage.

J. POWER RECTIFIER BRIDGE ASSEM- BLY CHECKING PROCEDURE

CAUTION

The rectifier bridge tests outlined below will iden- tify the most common effects found in power diodes or power silicon controlled rectifiers. If a bridge problem still exists after test, please call a Lincoln Field Service Shop. Further evaluation of diodes or silicon controlled rectifiers may require laboratory equipment.

1.DEVICE ISOLATION (see the instruction manu- al Parts List for the exact location)

Disconnect the following leads from the bridge, shown in Diagram 1:

a.Wiring harness gate leads (G1, G2, G3) from the gate lead terminals(1) on the Control PC board.

b.AC leads X1, X2 and X3 from the anodes of the SCR’s and cathodes of the diodes.

c.The 220, 221 and 223 leads from the Snubber PC board.

d.Lead 220 that connects to the latching resis- tor (R3).

e.The cathode of each diode (4 total).

(1)Connector J4 on latest control board.

IDEALARC R3R 600-I

Page 21 Page 23
Image 22
Page 21 Page 23
Contents Idealarc R3R Safety California Proposition 65 WarningsElectric Shock can kill Cylinder may explode if damaged Précautions DE Sûreté Sûreté Pour Soudage a L’ArcThank You Table of Contents Installation Technical Specifications R3R 600-I K1381Duty Cycle InstallationInput Power Connection Warning Output ConnectionsOperation 2OPERATIONB-2 Output Current Control DialAccessories Optional EquipmentPower Rectifier Replacement MaintenanceRoutine Maintenance Pocket AmptrolTroubleshooting HOW to USE Troubleshooting GuideFunction Problems Troubleshooting Troubleshooting Troubleshooting Problems Possible Cause Recommended Idealarc Troubleshooting Procedures Procedure for Replacing PC BoardsChecking Current Control Rheostat on Machine Power Silicon Controlled REC- Tifier Test Wiring Diagrams Idealarc R3R-400, 500-I, 500 & 600-I Wiring DiagramDimension Print R3R K817 or K817RPrecaucion Aviso DE

R3R 600-I specifications

The Lincoln Electric R3R 600-I is a state-of-the-art multi-process welding machine that exemplifies innovation and performance in the welding industry. Designed for versatility and efficiency, the R3R 600-I is ideal for a wide range of applications, making it suitable for both professional welding engineers and skilled hobbyists alike.

One of the main features of the R3R 600-I is its multi-process capability. This machine supports MIG, TIG, and Stick welding processes, allowing users to switch between methods depending on their specific project requirements quickly. This versatility is essential for businesses that need to adapt to diverse welding tasks without investing in multiple machines.

Another standout characteristic of the R3R 600-I is its advanced inverter technology. This allows for higher efficiency and reduced energy consumption compared to traditional welding machines. The inverter design results in a lighter and more compact unit, making it easier to transport to job sites. Furthermore, the R3R 600-I boasts a power output range that accommodates various thicknesses and materials, proving its adaptability in different working environments.

This welding machine is equipped with a user-friendly interface that features an intuitive digital display, making it easy for operators to set their parameters and monitor performance in real-time. The adjustable settings allow for fine-tuning to achieve desired results while ensuring optimal arc stability and a smooth finish.

The R3R 600-I also includes Lincoln Electric's proprietary technologies, such as "Auto-Set" and "Advanced Arc Control." Auto-Set simplifies the setup process, enabling users to select material type and thickness, allowing the machine to automatically adjust the voltage and wire feed speed for optimal performance. Advanced Arc Control enhances the arc's quality by providing better control over the welding parameters, resulting in improved penetration and reduced spatter.

Durability is another hallmark of the Lincoln Electric R3R 600-I. Constructed with high-quality materials, this machine is built to withstand the rigors of industrial use while maintaining high performance standards. Its robust design ensures longevity, reducing the need for frequent replacements and maintenance.

In summary, the Lincoln Electric R3R 600-I is a leading multi-process welding machine that combines advanced technology, user-friendly features, and superior build quality. Its ability to perform various welding processes, coupled with energy-efficient inverter technology, makes it an invaluable tool for welders in many industries. Whether tackling heavy-duty industrial projects or intricate craftsmanship, the R3R 600-I stands out as a reliable choice in today's competitive welding landscape.
Top Page Image Contents