Lincoln Electric R3R 600-I manual Troubleshooting Procedures, Procedure for Replacing PC Boards

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E-8

TROUBLESHOOTING

E-8

 

 

 

TROUBLESHOOTING

PROCEDURES

A. PROCEDURE FOR REPLACING PC BOARDS

When a PC board is to be replaced, the following procedure must be followed:

1.Visually inspect PC board in question. Are any of the components damaged? Is a conductor on the back side of the board damaged?

a.If there is no damage to the PC board, insert a new one and see if this remedies the prob- lem. If the problem is remedied replace the old PC board and see if the problem still exists with the old PC board.

1.If the problem does not exist with the old board, check the PC board harness plug and PC board plug for corrosion, contam- ination, or oversize.

2.Check leads in the harness for loose con- nections.

b.If there is damage to the PC board, refer to the Troubleshooting Guide.

B.PROCEDURE FOR CHECKING DIODES

1.Isolate the diode

in question. (Electrically dis- connect from other circuits.)

2.Use an ohmme- ter X10 scale.

Connect the meter across the diode and note the resistance

value. Reverse the ohm-meter leads and note the resistance value.

Shorted diode – Low resistance readings in both directions.

Open diode – High or infinite resistance in both directions.

Good diode – One reading will be high or infinite and the other reading will be low.

C. CONNECTING THE REMOTE CONTROL TO THE MACHINE

Extreme caution must be observed when installing or extending the wiring of a remote control. Improper connection of this unit can Lead to failure of the current control rheostat or the control circuit. Only the green lead can and should be grounded to the machine case. When extending the standard remote control make sure the leads are the same and the splice is waterproof. Be very careful not to ground the cable when in use and do not let these connections touch against the case.

D. OUTPUT VOLTAGE

The open circuit voltage of the machine should be 66 to 71 volts and should not vary when the rheo- stat is varied unless the machine is welding. If any other condition exists, refer to the Troubleshooting Guide.

E. FAULT PROTECTION OPERATION

The overload protection circuit, in the control board, will reduce the welding current (heat) to some safe value if the machine is overloaded for 2 to 3 sec- onds. The overload values are as appears in the fol- lowing table.

Machine Name

f

Load Current ±5%

R3R 375-I

 

 

R3R 500-I

50 Hz

100 A

R3R 600-I

 

 

 

 

 

F.CHECKING SNUBBER CIRCUIT

In case of an SCR malfunction or failure, the snub- ber assembly should be checked. Turn the machine off and disconnect one lead of the snubber assem- bly. (Either 221, 222 or 223 depending on the SCR in question. See wiring diagram.) The sides of the machine have to be removed to do this. (See the instruction manual parts list for the exact location.)

1.Visually inspect the snubber assembly for over- heated components.

2.Using a VOLT meter on the X10 scale, connect the positive lead to the lead removed. Touch the negative lead to the other lead still connected to the SCR bridge. The indicating needle on the meter will move quickly to the right (low resis- tance value) and then slowly return to the left (high resistance value). This indicates that the capacitor in the snubber circuit is taking a charge.

IDEALARC R3R 600-I

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Contents Idealarc R3R California Proposition 65 Warnings SafetyElectric Shock can kill Cylinder may explode if damaged Sûreté Pour Soudage a L’Arc Précautions DE SûretéThank You Table of Contents Technical Specifications R3R 600-I K1381 InstallationInput Power Connection Warning InstallationDuty Cycle Output ConnectionsOperation Output Current Control Dial 2OPERATIONB-2Optional Equipment AccessoriesRoutine Maintenance MaintenancePower Rectifier Replacement Pocket AmptrolHOW to USE Troubleshooting Guide TroubleshootingFunction Problems Troubleshooting Troubleshooting Troubleshooting Problems Possible Cause Recommended Idealarc Procedure for Replacing PC Boards Troubleshooting ProceduresChecking Current Control Rheostat on Machine Power Silicon Controlled REC- Tifier Test Idealarc R3R-400, 500-I, 500 & 600-I Wiring Diagram Wiring DiagramsR3R K817 or K817R Dimension PrintPrecaucion 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.