20
Troubleshooting
Fault
Probable Cause
Suggested remedy
Excessive blade
breakage
1.
Material loose in vise.
2.
Incorrect speed or feed.
3.
Teeth too coarse for material.
4.
Incorrect blade tension.
5.
Saw blade is in contact with work-piece
before the saw is started.
6.
Misaligned guides.
7.
Cracking at weld.
1.
Clamp work securely.
2.
Check
Machinist’s
Handbook
for
speed/feed appropriate for the material
being cut.
3.
Check
Machinist’s
Handbook
for
recommended blade type.
4.
Adjust blade tension to the point where
the blade just does not slip on the
wheel.
5.
Start the motor before placing the saw
on the work-piece.
6.
Adjust guides.
7.
Longer annealing cycle.
Premature blade
dulling
1.
Blade teeth too coarse.
2.
Blade speed too high.
3.
Inadequate feed pressure.
4.
Hard spots in work-piece or scale on/in
work-piece.
5.
Work hardening of material (especially
stainless steel).
6.
Insufficient blade tension.
7.
Operating saw without pressure on
work-piece.
1.
Use a finer tooth blade.
2.
Try a lower blade speed.
3.
Decrease spring tension.
4.
Increase feed pressure (hard spots).
Reduce speed, increase feed pre-sure
(Scale).
5.
Increase feed pressure by reducing
spring tension.
6.
Increase tension to proper level.
7.
Do not run blade at idle in/on material.
Bad cuts (crooked)
1.
Work-piece not square with blade.
2.
Feed pressure too fast.
3.
Guide bearings not adjusted properly.
4.
Inadequate blade tension.
5.
Span between the two blade guides too
wide.
6.
Dull blade.
7.
Incorrect blade speed.
8.
Blade guide assembly is loose.
9.
Blade guide bearing assembly loose.
10.
Blade track too far away from wheel
flanges.
11.
Guide bearing worn.
1.
Adjust vise so it is square with the blade.
(Always clamp the work-piece tightly in
the vise.)
2.
Decrease pressure.
3.
Adjust guide bearing clearance to 0.001
inch (0.002 inch maximum).
4.
Gradually increase blade tension.
5.
Move blade guide bracket closer to
work.
6.
Replace blade.
7.
Check blade speed.
8.
Tighten blade guide assembly.
9.
Tighten blade guide bearing assembly.
10.
Adjust blade tracking.
11.
Replace worn bearing.
Содержание JET MBS-708CSB
Страница 22: ...22 Replacement Parts Saw Table Assembly Drawing 1 of 3 Exploded View ...
Страница 23: ...23 Saw Bow Assembly Drawing 2 of 3 Exploded View ...
Страница 24: ...24 Saw Stand Assembly Drawing 3 of 3 Exploded View ...
Страница 30: ...30 Wiring Diagrams ...
