Troubleshooting
SECTION 6: SERVICE
Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel- ops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical Support at (570)
Troubleshooting
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Welder | does | not | 1. | Plug/receptacle is at fault or wired incor- | 1. | Test for good contacts; correct the wiring. | ||
power | up | or | the |
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breaker trips. |
| 2. | Wiring is open/has high resistance. | 2. | Check for broken wires or disconnected/corroded | |||
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| connections, and repair/replace as necessary. | |
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| 3. | ON/OFF switch is at fault. | 3. | Replace faulty ON/OFF switch. | |
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Porosity; small cavi- | 1. | Arc length is too long. | 1. | Reduce length of arc. |
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ties or holes caused | 2. | Workpiece is dirty. | 2. | Remove all grease, oil, moisture, coatings, rust, and | ||||
from gas packets in |
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| dirt from workpiece before welding. | ||||
weld. |
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| 3. | Damp electrodes. | 3. | Use dry electrodes. |
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| 4. | Incorrect electrode used. | 4. | Use correct type and size of electrode. | |
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Excessive spatter. | 1. | Amperage too high for electrode. | 1. | Select large electrode or decrease amperage. | ||||
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| 2. | Voltage too high; arc length too long. | 2. | Reduce voltage or arc length. | |
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| 3. | Incorrect electrode used. | 3. | Use correct type and size of electrode. | |
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Distortion | of base | 1. | Excessive heat applied to base metal. | 1. | Make tack welds along joint before starting opera- | |||
metal. |
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| tion; select lower amperage for electrode; increase | |
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| travel speed; weld in small segments and allow cool- | |
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Burn | through | or | 1. | Excessive heat applied to base metal. | 1. | Select lower amperage; use smaller electrode; | ||
excessive | penetra- |
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| increase and/or maintain steady travel speed. | |||
tion of base metal. |
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Lack of penetration. | 1. | Improper joint preparation. | 1. | Material too thick; joint preparation must provide | ||||
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| access to bottom of groove. | |
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| 2. | Improper weld technique. | 2. | Keep arc on leading edge of weld puddle; reduce | |
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| travel speed. |
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| 3. | Insufficient heat applied to weld. | 3. | Increase amperage; select larger electrode. | |
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Failure | of | weld | to | 1. | Insufficient heat applied to weld. | 1. | Increase amperage; select larger electrode. | |
fuse completely with | 2. | Improper welding technique. | 2. | Widen groove to access | bottom during welding; | |||
base metal or prior |
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| keep arc on leading edge | of weld puddle; place | |||
weld bead. |
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| stringer bead in proper location at joint during weld- | |||
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| 3. | Workpiece dirty. | 3. | Remove all grease, oil, moisture, coatings, rust, and | |
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| dirt from workpiece before welding. | |
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| 4. | Duty cycle exceeded. | 4. | Shut down welder and allow it to cool. | |
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H8151 230V Mini Welder |