5-2. Overload Protection
1 Circuit Breaker CB1
CB1 protects the welding power source control circuit from over- load. If CB1 opens, weld output drops to the minimum of the range selected.
Press button to reset circuit break- er.
1
Ref.
5-3. Troubleshooting Table
Trouble | Remedy | |
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| |
No weld output; unit completely | Place line disconnect switch in On position (see Section | |
inoperative. |
| |
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| |
| Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section | |
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| |
| Check for proper input power connections (see Section | |
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| |
| Check for proper jumper link position (see Section | |
|
| |
No weld output. | Clean and tighten all weld connections (see Section | |
|
| |
Unit provides only low or minimum | Check for proper line voltage. | |
weld output. |
| |
Check for open line fuse(s), and replace if necessary. Check and replace circuit breakers (see Sec- | ||
| ||
| tion | |
|
| |
| Clean and tighten all weld connections (see Section | |
|
| |
| Place Remote Amperage switch in correct position (see Section | |
|
| |
| Select correct size weld cables (see Section | |
|
| |
Low weld amperage; Amperage Ad- | Reset circuit breaker CB1, if necessary (see Section | |
justment does not control amperage. |
| |
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| |
Maximum weld output. | Have Factory Authorized Service Agent check Amperage Adjustment control. | |
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| |
Erratic or improper weld output. | Check for proper input power connections. | |
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| |
| Clean and tighten all weld connections (see Section | |
|
| |
| Use proper size and type electrodes. | |
|
| |
Excessive line current or line fuse(s) | Check for proper input power connections (see Section | |
open repeatedly. |
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Check for proper jumper link position (see Section | ||
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Fan not operating and/or over heating. | Check for and remove anything blocking fan movement. | |
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| Replace fan motor, if necessary. | |
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