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.A complete Parts List is available at www.HobartWelders.com
6-4. Troubleshooting Power Source
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Is | Power switch | No | Place Power switch in the | |
S1 | in the On | |||
| On position. (see Section | |||
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position? | |
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| Yes |
Does pilot arc ignite?
Yes
Does pilot arc
No
No
Press torch trigger and check if pilot arc ignites. Check torch consumables. *Check torch connections, air filter, pressure switch S3, valve AS1, air supply connection to unit, torch, and PC1.
Place torch near workpiece and check if pilot arc “jumps” or transfers to workpiece.
Check work clamp
Is Power light flashing?
No
Is Cup Status light On or flashing?
Yes | Reset Power switch S1. |
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| Check torch consumables/ |
Yes | cup. Reset Power switch |
| S1. *Check torch connec- |
| tions. *Check Control board |
| PC1. |
transfer to workpiece?
Yes
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Check all connections, Check main transformer T1, Check boost inductor L1 and output inductor L2.
Return to beginning of chart.
connection. *Check Control board PC1 and connections, and torch and its connections.
No
NOTE: The fan will normally run for approximately 5 seconds after power switch is placed in the Off position (see Section
Is Temp Status | Yes |
light On? |
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No
Is Pressure Status | Yes |
light On or flashing? |
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If unit is overheated, wait while fan cools down unit
temperature.
Turn Output control
fully counterclockwise (see Section
Control board PC1, pressure switch, air filter, valve AS1, and air supply connection to unit and torch.
No
*Servicing procedure to be performed only by authorized Service Station.