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SYMPTOM
Motor running too hot
Saw will not start
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
1,
2.
3.
4,
5.
Speed difficult adjust 1.
2.
Blade does not heat
up when weld button
is pressed
Misaligned weld
1,
2.
3.
4.
5.
6,
1.
2.
3.
4,
Blade ends overlap
Incomplete weld
Weld breaks when used
Blade melts when welding
1.
2.
1.
2.
3.
4.
CORRECTIVE ACTION
1. Reduce tension on blade
2. Use blade with finer teeth
3. Use blade with coarser teeth
4,
Key switch not on 1.
Not plugged in 2.
Loose electrical connections 3.
Thermal overload relay tripped 4.
Fuse blown 5.
Motor not running 1.
Worn/Broken V-belt(s) 2.
No power to welder 1.
Weld pressure adjustment not reset 2.
Weld pressure adjustment set to "0" 3.
Blade or jaws dirty, rusty or oily 4.
Loose connection to weld switch, 5.
limit switch, transformer,
or welder jaws
Burnt transformer 6.
Dirt or scale on jaws or blades 1.
Blade ends not cut square 2.
Blade ends not correctly 3.
aligned when clamped in jaws
Worn jaws 4.
Improper weld pressure 1.
Blade ends aligned incorrectly 2.
Weld pressure adjusted incorrectly 1.
Improper clamping 2.
Defective limit switch 3.
Movable jaw sticking 4.
1. Weld not annealed correctly
2. Weld ground too thin
3. Incomplete weld
1. Weld pressure adjusted incorrectly
2. Inaccurate moveable jaw retraction
Clean thoroughly; vacuum motor and speed
change mechanism
Turn key to on
Plug into supply
Have qualified electrician check electrical
connections
Reset relay, see "Grounding Instructions"
Check and replace fuse
Turn saw on
Check/Replace V-belts for Repair Part,
See Figure 17.
Check power at receptacle
Adjust weld pressure properly
Adjust weld pressure properly
Clean blade and jaws
Check; tighten if necessary
Replace
Clean jaws and blades
Cut ends square
Clamp blades against jaw alignment surface
Replace
Reduce weld pressure
Align blades properly
See "Blade Welding"
See "Mounting Blade"
Replace
Clean and oil jaw dovetails on inside
of cabinet
3. Movable jaw sticking 3.
Brittle welds 1. Weld not annealed correctly 1. See "Blade Annealing"
2. Dirt, oil or flash on blade or jaws 2. Clean blade and jaws
1. See "Blade Annealing"
2. Grind weld to thickness of blade
3. See Incomplete Weld section (above)
1. Increase weld pressure
2. Allow sufficient time for tool to cool down;
see "Blade Welding"
Clean and oil jaw dovetails on inside
of cabinet
13