ESAB Digital Meter Plug-in Module for Migmaster 250 Troubleshooting instruction

INSTRUCTIONS for

DIGITAL METER PLUG-IN MODULE

FOR MIGMASTER 250

0558008685 12 / 2008

0558008685

December, 2008

DIGITAL METER PLUG-IN MODULE FOR MIGMASTER 250, P/N 32857

This easy-to-install, plug-in module mounts in place of the top blank cover plate of the upper-right front

panel location in the machine. This unique meter module alternately displays welding voltage and current

(of the dial-set welding condition) every 4-seconds. Two L.E.D.’s labeled Amps and Volts provided below the

meter windows, alternately illuminate to indicate which condition is being displayed. The voltage indica-

tion is displayed in 1/10-volt increments (e.g.: 20.5), while the current indication is usually displayed in three

whole digits (e.g.: 225). After the torch trigger is released, the meter will continue to ash for 20-seconds the

last condition used during welding. At the end of this time, the meter will reset to zero.

INSTALLING OPTIONAL DIGITAL METER PLUG-IN MODULE

1. Remove the top blank-cover plate from the upper right front panel of the power supply. Save the

mounting hardware.

2. Locate the harness-connected 10-pin plastic plug, PL1, inside the mounting cavity. This plug does not

have a jumper plug connected to it.

3. Connect the 10-pin plug into the matching receptacle on the rear of the optional meter module.

4. Install the meter module in place of the blank panel removed in Step 1, using the same mounting hard-

ware that you saved.