Hobart Welding Products HP-70, 700I manual Troubleshooting Power Source, Trouble Remedy

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

6-7. Troubleshooting Power Source

	Trouble		Remedy
No pilot arc; difficulty in establishing an		Clean or replace worn consumables as necessary (see torch Owner’s Manual).
arc.
		Check for damaged torch or torch cable (see torch Owner’s Manual).
No cutting output; Power light off; status		Place Power switch in On position.
lights off; fan motor FM does not run.
		Place line disconnect device in On position (see Section 4-11).
		Check line fuse(s) and replace if needed or reset circuit breakers (see Section 4-11).
Pilot arc working; no cutting output;		Be sure work clamp is connected.
Power light on; status lights off; fan
motor running.
		Clean or replace worn consumables as necessary (see torch Owner’s Manual).
No gas/air flow; Power light on; status		Have Factory Authorized Service Agent check for proper torch connections. Check operation of gas
lights off; fan motor running.		valve AS1, and check gas/air system for leaks. Check filter element (see Section 6-2).
Pressure status light On.		Check for sufficient gas/air supply pressure (see Section 4-1).
		Check for dirty air filter and replace, if necessary (see manufacturer’s instructions).
		Check air lines for leaks.
		Have Factory Authorized Service Agent check pressure switch and control board.
Cup status light On.		Check torch shield cup (see Section 6-4). Reset power switch.
		Have Factory Authorized Service Agent check torch.
Temperature status light On.		Unit overheating. Allow fan to run; the Trouble light goes out when the unit has cooled.
		Have Factory Authorized Service Agent check control board.
Status lights not working.		Have Factory Authorized Service Agent check unit.
Power light flashing, status lights off.		Reset power switch. Have qualified technician check input line power.
Pressure status light flashes.		Unit lost pressure (momentarily) while cutting. Check air line for leaks.
Cup status light flashes.		Unit lost output while attempting to cut or pilot. Check consumables and torch for wear.
Short tip life.		Check and clean drag shield of any slag, particles, and debris.
		Check input air pressure.

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