Bedienungsanleitung Gude MIG 175 ZD-20038 (Seite 15 von 106) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Türkisch, Schwedisch, Norwegisch)

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Small pores in the weld – similar to those on a bar of chocolate surface - may cause interruption of the gas flow and

sometimes, they may even catch up small foreign bodies.

If that happens, our advice is to suspend welding and start welding again. However, it is primarily important to regain control of

the gas flow rate (ca 8 litres per minute), thoroughly clean the work area and incline the hose pack in the right way during the

work.

♦ Spattering

Small drops of melted metal dripping away from the welding arc. Small quantities cannot be excluded, however the

phenomenon may be reduced to the minimum by correct current and gas flow rate adjustment and keeping the hose pack

clean.

♦ Narrow and Round Welding

Results from the hose pack moving too fast or from wrong adjustment of the gas flow rate.

♦ Thick and Wide Welding

Results from the hose pack moving too slowly.

♦ Burnt Wire Rear End

May result from slow electrode move, loose or worn electrode guide, poor quality of the electrode or too high value of the

supplied current.

♦ Burn-in Too Small

Is typically caused by the hose pack moving too fast, too low value of the supplied current, incorrect inclination, confused

polarity or insufficient distance of the welded-on edges. Check the set welding parameters and improve the pre-treatment of

the parts to be welded.

♦ Part Burn-through

May result from the hose pack moving too slowly, too high value of the supplied current or poor guiding of the electrode.

♦ Arc Instability

Is typically caused by insufficient voltage, irregular move of the electrode, too small amount of the protective gas.

Warranty

Warranty as shown in the warranty certificate attached !

The warranty shall not apply to damages resulting from:

• Transport or handling

• Improper use of the machine by the operator

• Insufficient maintenance

• Defects, malfunction and cracks caused by the machine operation

• Breakdowns of electric and electronic components, electric motors

• Unauthorised/unqualified use of the machine by the operator

Diagnostics of faults

FAULT CAUSE TROUBLE SHOOTING

The wire will not move when the driving 1) guide contamination

wheel is turning Blow off with air at the

point of jet nozzle

2) the winch coupling too high - unloose

3) damaged hose pack . check the electrode core

Electrode supply 1) Damaged contact jet nozzle replace

intermittent/ gets disconnected 2) Burnt parts of contact jet nozzle replace

3) Contaminated driving wheel groove replace

4) Worn driving wheel fluted replace

Arc went off ? 1) Poor contact of ground clamps tighten and check the

and the piece to be welded clamp

2) short circuit between the pipe and the gas line Clean or replace the

contact jet nozzle and

the gas line nozzle

Porous weld 1) Insufficient gas protection due to the

deposit in gas line jet nozzle Remove the deposit

2) Poor distance or poor inclination Distance between the

blower bulb of the hose

pack and the piece to be

welded should be 5 – 10

mm, the inclination should

be 60

3) Too little gas Increase gas supply

4) Pieces to be welded wet dry up using a hot air

pistol or in another way

After a long time of operation, the In result of prolonged operation, the Leave the machine to cool down for 20-30

minutes at least. Machine has suddenly stooped Machine got overheated and the thermal fuse switched on

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Gude MIG 175 ZD-20038 Seite 15

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