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TROUBLESHOOTING & REPAIR |
POWER FEED 10M
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS | POSSIBLE AREAS OF |
| RECOMMENDED |
(SYMPTOMS) | MISADJUSTMENT(S) |
| COURSE OF ACTION |
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FUNCTION PROBLEMS (Continued) | |||
The purge switch on the wire drive | 1. Make certain the COLD |
| 1. If the COLD INCH/GAS PURGE |
unit does not activate the gas sole- | INCH/GAS PURGE switch is | switch is operating correctly and | |
noid, but gun trigger closure in the | operating properly. |
| the associated leeds are OK. |
MIG or pulse modes does activate |
|
| The feedhad board may be |
the solenoid. The LEDs are | 2. Check for loose or faulty leeds | faulty. | |
steady green on the power source, | between COLD INCH/GAS |
| |
Control Box and wire drive unit. | PURGE switch and the wire |
| |
| drive control board. See wiring |
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| diagram. |
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The COLD INCH/GAS PURGE | 1. Make certain the COLD |
| 1. If the COLD INCH/GAS PURGE |
switch does not turn on the wire | INCH/GAS PURGE switch is | switch is operating correctly and | |
drive motor but gun trigger closure | operating properly. |
| the associated leads are OK. |
in the MIG or Pulse modes does |
|
| The feedhead board may be |
activate the wire drive motor. | 2. Check for loose or faulty leeds | faulty. | |
The LEDs are steady green on the | between the COLD INCH/GAS |
| |
power source, Control Box and | PURGE switch and the wire |
| |
wire drive unit. | drive control board. See wiring |
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| diagram. |
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The voltmeter on the Control Box | 1. Make sure the DIP switches are | 1. Check leads #513 and #514 from | |
does not function properly even | configured correctly for the weld- | J85 on the feedhead board to the | |
though the STATUS LEDS are | ing polarity being used. | See | voltage sense PC board. |
steady green. | Setting Dip Switches in the |
| |
| Wire Drive in the Installation |
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| section of this manual. |
| 2. Perform the Voltage Sense |
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| Board Test. |
| 2. Check the #67 lead on the wire | 3. The display board may be faulty. | |
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| ||
| drive unit. Make sure it is con- |
| |
| nected to the motor gear box and | 4. The feedhead control board may | |
| also the voltage sense PC board. | ||
| be faulty. | ||
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| |
| 3.Check the work sensing leads on | 5. The Control Box control board | |
| the Power Wave 455 | power | |
| may be faulty. | ||
| source. Check leads #202 (Neg. | ||
|
| ||
| output terminal) and #206 (pos. |
| |
| output terminal). See Power |
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| Wave 455 wiring diagram. If |
| |
| esternal voltage sensing is uti- |
| |
| lized, Check the #21 lead |
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| between the |
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| the front of the Power Wave 455 |
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| and the workplace. |
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department at