Dake Model SAR 440 - Manual (Page 11)

11
SAR 440 SA GDS
A B
C
REGULATING
THE MACHINE
7.1 - Blade tension assembly
CUTTING DIRECTION
7
The ideal blade tension is obtained by rotating the hand wheel belt
tensioner until the blade tension pressure reaches 160 Bars
otherwise the saw will not operate.
N.B.: when the saw is not in use it is recommend to loosen the
blade tension.
It is always recommend to use the blade sizes suggested in
this manual.
7.2 - Blade-guide head
Blade guiding is obtained by means of plates which are regulated
during the testing phase according to blade thickness.
When replacing a blade, ensure that the belts are 1,1 mm thick as
the guiding blade pads have been adjusted to this size. If using
different size toothed belts, it will be necessary to proceed with a
new registration as follows:
- Loosen the screws ( B ) and loosen dowels (A ) widening the
passage between the plates.
- Loosen the dowels ( C ) and rotate the pins to widen the passage
between the bearings.
- Mount the new blade and rotate the hand wheel belt tensioner
until the relative dip-switch is activated.
- Tighten the dowels ( A ) and then loosen them to allow a play of
0,04 mm to ensure the smooth running of the blade and fasten
the screws ( B ).
- Rotate the pins until the bearings rest on the blade and block the
screws ( C ).
- Ensure that between the blade and the superior bearings there
are 0,2 - 0,3 mm of play; if necessary, loosen the screws ( D )
that block the heads and execute the necessary registration.
- the CUTTING SPEED and the TYPE of BLADE - combined
with a suitable lowering of saw frame - are of decisive impor-
tance for cutting quality and for machine performance (for
further details on this topic, see below in the chapter on “Mate-
rial classification and blade selection”).
- When starting to cut with a new blade, in order to safeguard its
life and efficiency, the first two or three cuts must be made
while exerting a slight pressure on the part, so that the time
taken to cut is about double the normal time (see below in the
chapter on “Material classification and blade selection” in the
section on
Blade running-in).
- Press the red emergency button ( 1 ) when there are conditions of
danger or malfunctions in general, so as to stop machine opera-
tion immediately.
A B A
8
160 BAR