ESAB Current Limiting Resistors Troubleshooting instruction

Be sure this information reaches the operator.

You can get extra copies through your supplier.

Current Limiting Resistors

for

MobileMaster IVcvcc

Supplement to F-15-610 - PORTABLE “OFF THE ARC” WIRE FEEDERS

INSTRUCTIONS for

F-15-634

September, 2000

These INSTRUCTIONS are for experienced operators. If you are not fully familiar with the principles of

operation and safe practices for arc welding equipment, we urge you to read our booklet, "Precautions and

Safe Practices for Arc Welding, Cutting, and Gouging", Form 52-529. Do NOT permit untrained persons to

install, operate, or maintain this equipment. Do NOT attempt to install or operate this equipment until you

have read and fully understand these instructions. If you do not fully understand these instructions, contact

your supplier for further information. Be sure to read the Safety Precautions on pages 3 and 4 before

installing or operating this equipment.

1- Disconnect the Wire Feeder from the Power Source for safety.

2- Locate the voltage-pickup lead (work lead). Disconnect the work lead at the fast-on connectors

located behind the front panel. You will be connecting the new resistor kit using these terminals.

3- Remove the p/c board compartment cover to expose the screws that hold it in place. Remove the

two bottom screws that hold the p/c board tray to the front panel.

4- Slide the new resistor assembly in place. (see below)

5- Install existing hardware.

6- Connect resistor kit leads to the work lead fast-on terminals.

7- Install p/c board tray cover plate.

8- Secure any loose leads associated with this change.

4 and 5

For Improved Performance and Reliability on Power Supplies With Large Inductors