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11
Figure 8-5
8.7 Changing blade speed
1. Raise blade approximately six inches above
workpiece and turn feed rate knob to zero.
2. Turn power on, and turn speed adjuster knob
(Figure 8-6) to match appropriate material. Turn
counterclockwise to increase speed, clockwise
to decrease.
Turn speed adjuster knob
only when blade is running.
Figure 8-6: blade speed adjustment
3. The indicator on the mechanism shows speeds
in graduations of 90,130,170,235,370 FPM.
The graduations may not match the
recommended feed rate; an approximate speed
may therefore be required. For example, to set
a speed rate of 110 feet per minute, the
indicator would be set about midway between
70 and 130 FPM.
4. Sect. 12.0 shows recommended speeds for
basic materials. Refer to a machinist’s
handbook for more detailed recommendations.
8.8 Broken blade safety device
If blade breaks during operation, the limit switch
shown in Figure 8-7 will automatically stop the
machine.
Figure 8-7
8.9 Vise adjustments
8.9.1 General movements
1. Place workpiece between vise jaws with
required amount to be cut-off extending out past
blade. (Figure 8-9 shows recommended
positioning of various workpiece shapes within
the vise.)
2. Lift rack block (K, Figure 7-8) and manually
slide floating vise jaw in general proximity to
workpiece. Let block fall to re-engage rack.
3. Model MSA: Rotate handwheel (L) to tighten
jaw against workpiece
Model MSAH: Use vise button on control panel
to tighten jaw.
4. To retract vise jaw, lift rack block and manually
slide floating jaw away (all models), or use vise
release button on control panel (model MSAH
only).
Figure 8-8: vise adjustments
8.9.2 Miter cuts
If making an angled cut, the fixed vise jaw remains
stationary, while bow and bed are rotated (see sect.
8.12 for miter angle adjustments).
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