Steel City TITANIUM 50-550, Owner'S Manual

Page: 13 / 40

Page 13
The oscillation timing is the time it takes for the sanding
belt to oscillate from right-to-left and from left-to-right. This
oscillation should take the same amount of time. If
oscillation time to the left is, say 2 seconds, but time to the
right is longer, loosen the oscillation adjustment knob ( M )
and move it to the right, until correct tracking is obtained.
Then tighten the adjustment knob.
The oscillation speed can be adjusted by means of the
speed controller ( N ) on the cylinder:
Loosen the fixing nut on the speed controller, then turn the
controller clockwise to decrease oscillation speed, or turn
counter-clockwise to increase. Tighten the fixing nut.
Different oscillating speeds give different sanding results,
some experiments might be required to obtain desired
result.
◊ SANDING PLATEN
The combi head has an adjustable felt platen with a
graphite pad. It is used during the finish sanding passes,
so during the rough sanding passes or dimensioning,
the platen is up and not used.
To adjust platen position, unlock the platen lock lever ( A )
and adjust height by mean of the height lever ( B ).
A scale, divided in 0.1mm increments (approx. 0.004”),
helps in adjusting.
When at above 0 , the platen is up and not used
(for roughing passes). Typically set at 1.5 mm .
At 0 , the platen is even with the sanding drum and is
used for intermediate finishing passes (typically
100-150 grit).
Under 0 , the platen is lower than the sanding drum. It is
then doing the finish sanding (typically 180 and finer
grit). The platen should not be lowered by more than
0.2mm as burn marks and premature graphite wear will
occur. During finish sanding passes, it is not necessary
to use the table height handwheel; adjusting the platen
height alone will be sufficient.
NOTICE:
The platen should always be kept clean after
sanding. If the workpiece has straight notches
across it, the graphite cloth and felt have worn out
and should be replaced immediately.
M
N
B
A