Hobart GPU-600 Series User Manual

116 pages

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Operation and Maintenance Manual with

Illustrated Parts List for GPU-600

3-Phase Solid State

Transformer-Rectifiers

Series 500082-6xx

28.5 Volts, 600 Amps

OM 2244

12/15/2014 Rev A

Questions and Answers:

S
Sheila KingAug 5, 2025
How to troubleshoot a Hobart GPU-600 Transformer machine that will not start?
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  jsmithAug 5, 2025
  If your Hobart Transformer machine won't start, there are several potential causes: * The input power may be turned OFF at the remote disconnect switch. To solve this, turn the power ON at the remote disconnect switch. * There might be a blown fuse in the remote disconnect switch. Replace the blown fuse. If the fuse blows frequently, determine and fix the underlying cause. * There could be incorrect input power connections at the machine. Check the input power connections against the appropriate connection diagram. * The power input (frequency and voltage) might be incorrect. Ensure the voltage and frequency of the power input match the rating on the machine's nameplate. * A broken input cable could be the issue. Repair the cable as needed.
A
Allison ThompsonAug 13, 2025
Why does the line contactor fail to close on my Hobart GPU-600 Transformer?
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  Gary PowellAug 13, 2025
  If the line contactor fails to close on your Hobart Transformer, here are a few things to check: * The line contactor fuse F8 may be blown. Replace the fuse. If the fuse blows frequently, check for the cause. * There might be a mechanical obstruction on the contactor. Remove any obstruction. * The line contactor switch could be defective. Replace the line contactor switch. * The coil in the line contactor might be defective. Replace the contactor if the coil is open or shorted. * A cable could be broken at the line contactor. Repair the broken cable as necessary.