SYMPTOM
Motor running too hot
POSSIBLE CAUSE(S)
1.Blade tension too great
2.Blade too coarse for work (typical when cutting pipe)
3.Blade too fine for work (typical when cutting slick or soft material)
4.Excessive dirt and chips
CORRECTIVE ACTION
1.Reduce tension on blade
2.Use blade with finer teeth
3.Use blade with coarser teeth
4, Clean thoroughly; vacuum motor and speed change mechanism
Saw will not start | 1, | Key switch | not on | 1. | Turn key to on |
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| 2. | Not plugged | in | 2. | Plug into supply | ||
| 3. | Loose electrical connections | 3. | Have | qualified | electrician check electrical | |
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| connections |
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| 4, | Thermal overload relay tripped | 4. | Reset | relay, see "Grounding Instructions" | ||
| 5. | Fuse blown |
| 5. | Check | and replace fuse | |
Speed difficult adjust | 1. | Motor not running | 1. | Turn saw on |
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| 2. | Worn/Broken | 2. | Check/Replace | |||
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| See Figure 17. |
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Blade does not heat up when weld button is pressed
1, No power to welder | 1. Check power at receptacle |
2.Weld pressure adjustment not reset 2. Adjust weld pressure properly
3.Weld pressure adjustment set to "0" 3. Adjust weld pressure properly
4. | Blade | or jaws dirty, rusty or oily | 4. | Clean | blade and jaws |
5. | Loose | connection to weld switch, | 5. | Check; | tighten if necessary |
| limit switch, transformer, |
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| or welder jaws |
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6, | Burnt | transformer | 6. | Replace | |
Misaligned | weld |
| 1. | Dirt or scale on jaws or blades | 1. | Clean jaws | and blades |
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| 2. | Blade ends not cut square | 2. | Cut | ends square |
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| 3. | Blade ends not correctly |
| 3. | Clamp blades | against jaw alignment surface | |||||
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| aligned when clamped in jaws |
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| 4, | Worn jaws |
| 4. | Replace |
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Blade | ends overlap | 1. | Improper | weld pressure |
| 1. | Reduce weld | pressure |
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| 2. | Blade ends aligned incorrectly | 2. | Align blades | properly |
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Incomplete | weld |
| 1. | Weld pressure adjusted | incorrectly | 1. | See | "Blade | Welding" |
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| 2. | Improper | clamping |
| 2. | See | "Mounting | Blade" |
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| 3. | Defective | limit switch |
| 3. | Replace |
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| 4. | Movable | jaw sticking |
| 4. | Clean and | oil jaw dovetails | on inside | |||
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| of cabinet |
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Weld | breaks when | used | 1. | Weld not annealed correctly | 1. | See | "Blade Annealing" |
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| 2. | Weld ground too thin |
| 2. | Grind weld | to thickness of blade | |||||
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| 3. | Incomplete weld |
| 3. | See Incomplete Weld section (above) | ||||||
Blade | melts when | welding | 1. | Weld pressure adjusted | incorrectly | 1. | Increase weld | pressure |
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| 2. | Inaccurate moveable jaw | retraction | 2. | Allow sufficient | time for tool to cool down; | |||||
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| see "Blade Welding" |
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| 3. | Movable | jaw sticking |
| 3. | Clean and | oil jaw dovetails | on inside | |||
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| of cabinet |
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Brittle | welds |
| 1. | Weld not annealed correctly | 1. | See "Blade | Annealing" |
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| 2. | Dirt, oil or flash on blade or jaws | 2. | Clean blade | and jaws |
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