IV-22
RUNNING IN NEW SAW BLADE
When a new saw blade is to be used for the first time, be sure to run it in.
Unless the new saw blade is properly run in, it may become unable to
cut any more in the middle of a cutting operation, prematurely run out,
and decrease in service life. Each time a new saw blade is to be used,
run it in as described below, because it is basic to the proper use of the
machine.
1 Set the saw blade speed control dial or handwheel at a speed 20 to
30% lower than the normal setting.
2 Set the FLOW CONTROL dial at 1/2 to 2/3 of the normal setting to
reduce the sawhead downfeed speed.
3 Leave the CUTTING PRESSURE CONTROL dial at the normal
setting.
4 Make five to six cuts with large work under the above conditions.
NOTE
O If the work is smaller or is a structural steel shape, make 10 to 15 cuts.
5 After the saw blade has been run in for some time, gradually return
the saw blade speed control dial or handwheel and the FLOW
CONTROL dial to the normal setting while cutting the work.
6 If the saw blade vibrates before it reaches the standard cutting
conditions, it is not properly run in. In that case, again reduce the
saw blade running speed and sawhead downfeed speed, and
gradually bring the saw blade to the standard cutting conditions
while checking that it does not vibrate.
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