Powermatic COS18 - Manual (Page 15)

15
5. Now place the board flush against the fence
and against the rail of the roller table(s). If
necessary, shift a roller table horizontally to
bring it in line with the fence.
6. When final adjustments have been made
and re-checked on the roller tables, tighten
all screws/nuts connecting the roller tables to
the angle brackets.
CAUTION: Never adjust the outfeed
table level higher than the level of the
machine table surface.
ADJUSTMENTS
WARNING: Disconnect all power
sources, both air and electric, prior to
making adjustments.
BLADE TRAVEL
To adjust the speed by which the saw blade (and
the clamp) travel up and down, open the cabinet
door and locate the upper and lower pressure
regulating valves which are attached to the air
cylinder (Fig. 15). Turning these will regulate the
travel speed of the blade and clamp. The clamp
will lower during the blade's upstroke, and rise
during the blade's downstroke.
The top valve (shown in Fig. 15) adjusts the
speed of the blade's downstroke (and the speed
of the clamp as it rises back up). Turn the knob
counterclockwise to increase the speed, clockwise
to decrease. When the speed is satisfactory, lock
the setting by tightening the knurled nut.
Repeat for the lower valve, which adjusts the
speed of the blade's upstroke (and the lowering of
the clamp).
CLAMP HEIGHT ADJUSTMENT
The distance between the stock clamp and the
workpiece can be adjusted by turning the
handwheel (Fig. 16). Line up the red indicator
plate with the measurement on the scale. Ideally,
there should be a space of 1/8" between the
clamp and the workpiece. After setting the clamp
height, move the hex nut downward and tighten
against the casting as shown – this will prevent
your setting being altered by machine vibrations.
IMPORTANT: The clamp height adjustment must
be made each time the workpiece size changes.
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