Lincoln Electric IM480 CV-400 - Manual (Page 24)

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Trouble Cause What To Do
Output control not functioning on
“Remote” control.
Poor arc striking with semiautomatic
or automatic wire feeders.
Poor arc characteristics.
1. Output Control switch in wrong
position.
2. Faulty Output Control switch.
3. Faulty remote control poten-
tiometer.
4. Leads or connections open in
control circuit.
5. Faulty Control PC Board.
1. Poor work connection.
2. Improper procedures.
3. Defective Control PC Board.
1. Defective Control PC Board.
2. Capacitor(s) in output circuit
failed. A failure is indicated if the
small vent plug on top of a
capacitor is raised or blown out.
1. Place switch in “Remote”.
2. Check and replace if found faulty.
3. Check and replace if found faulty.
4. Check all leads and connections,
internal or remote, for continuity;
repair if necessary.
5. Replace. See Procedure for
Replacing PC Boards.
1. Work connection must be ade-
quate for application.
2. Adjust procedures for improved
starting.
3. Replace. See Procedure for
Replacing PC Boards.
1. Replace. See Procedure for
Replacing PC Boards.
2. Replace entire bank of capaci-
tors. Do not replace individual
capacitors.
WARNING: The liquid electrolyte
in these capacitors is toxic. Avoid
contact with any portion of your
body. Clean up vented electrolyte
using rubber gloves and a water
dampened cloth. Any electrolyte
which gets on skin, clean with
soap and water.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con-
tact your local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CAUTION