Hobart Welding Products 625 Troubleshooting Power Source, Check torch consumables, Is Temp Status

.A complete Parts List is available at www.HobartWelders.com

6-4. Troubleshooting Power Source

Is	Power switch	No	Place Power switch in the
S1	in the On
			On position. (see Section

position?	5-1).
	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.

	Check torch consumables/
Yes	cup. Reset Power switch
	S1. *Check torch connec-
	tions. *Check Control board
	PC1.

transfer to workpiece?

Yes

*

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 5-1).

Is Temp Status	Yes
light On?

No

Is Pressure Status	Yes
light On or flashing?

If unit is overheated, wait while fan cools down unit

temperature.

Turn Output control

fully counterclockwise (see Section 4-12). Check for gas/air flow at torch. *Check

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.

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