Hobart-welding-products H-9B Gun Uživatelský manuál stáhnout pdf (Strana 17)

OM-225 333 Page 13

5-6. Routine Maintenance

Y Turn Off welding power source before maintaining.

Each Spool Of Wire

Blow Out

Gun

Casing

Clean

Nozzle

And Check

Contact Tip

3 Months

Control

Cord

Gas

Hose

Gun Cable

Replace

Cracked

Parts

5-7. Troubleshooting

Trouble Remedy

Wire does not feed; wire is not ener-

gized; wire feeds unevenly

Check contact tip. Check for kinks in gun cable.

;

uneven

Check contact tip. Check for kinks in gun cable. Blow out gun liner (see Section 5-2).

Check for secure gun trigger lead connections at PC1 (see Section 3-3).

Check, and if necessary, replace gun trigger switch (see Section 5-4).

Weld porosity.

Remove weld spatter buildup in nozzle.

Make sure inner head tube is tight in cable connector.

Check shielding gas flow/supply.

Wire feeding stops or does not feed

properly during welding.

Straighten gun cable and/or replace damaged parts (see Section 5-2 or 5-3).

Adjust drive roll pressure (see Section 3-5).

Change to proper drive roll groove (see welding power source manual).

Readjust hub tension (see weld power source manual).

Clean or replace liner if dirty or plugged (see Section 5-2 or 5-3).

Replace drive roll or pressure bearing if worn or slipping (see welding power source manual).

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Hobart-welding-products H-9B Gun Uživatelský manuál Strana 17