Lincoln Electric IM402-B Manual Do Utilizador

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15

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TROUBLE

C. Variable or sluggish welding.

D. Welder wonʼt shut off.

E. Polarity switch wonʼt turn.

CAUSE

1. Poor work or electrode terminal

connection.

2. Current too low.

3. Low line voltage.

4. Welding leads too small.

5. Old and badly frayed welding

cables.

1. Line switch has failed

mechanically.

1. Contacts rough and pitted from

improper switching under load.

WHAT TO DO

1. Check and clean all connections.

2. Check recommended currents

for rod type and size.

3. Check with power company.

4. See Output Cable section.

5. Replace.

1. Replace switch.

1. Replace switch.

TROUBLESHOOTING

(CONTINUED)