Powermatic 2415 Operating Instructions And Parts Manual page 30

Trouble
Blade forms cracks at
base of teeth.
(continued)
Cracks on back edge
of blade.
Blade breaks
prematurely.
Blade breaks close to
weld.
Premature dulling of
saw teeth.
Blade binds in the
workpiece.
Probable Cause
Blade sharpened incorrectly,
becomes overheated.
Band wheels have become
misaligned.
Workpiece being fed too quickly.
Welding on blade not perfectly
aligned.
Support bearing is worn; caused by
constant contact with back of blade.
Feed force too great.
Blade pitch too coarse.
Support bearing not properly
supporting blade.
Blade tensioned too tightly.
Blade overheated during welding.
Blade cooled too rapidly after welding.
Blade "pitch" too fine.
Feed pressure too light.
Cutting rate too low.
Incorrect choice of blade.
Chipped tooth or foreign object
lodged in cut.
Incorrect blade tension or damaged
blade.
Blade too wide for desired radius.
Remedy
Sharpen blade properly or replace.
Contact service representative.
Reduce feed speed to lessen strain
on the blade.
Eliminate the welded part, and re-
weld properly; or acquire a new blade.
Replace support bearing. Adjust new
bearing according to instructions (see
pages 18 and 19).
Reduce feed force.
Refer to blade selection chart; use
finer pitch blade (see page 28).
Check support bearing for correct
position and signs of wear. Adjust or
replace as needed.
Reduce tension (see page 16).
Have blade annealed, or eliminate
brittle part and weld correctly.
Have blade annealed, or eliminate
brittle part and weld correctly.
Refer to blade selection chart (page
28). Use blade with coarser pitch.
Increase feed pressure.
Increase feed pressure and cutting
rate.
Re-examine material. Select proper
blade from the chart (page 28).
Stop the saw and remove lodged
particle. Replace blade if damaged.
Correct accordingly.
Select narrower blade. See chart on
page 28.
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