NECESSARY ADJUSTMENTS
HOLZMANN MASCHINEN GmbH www.holzmann-maschinen.at
32
HBS400
16.1
Changing/tensioning the saw blade
C A U T I O N
If the tension is too high, the saw band may tear - risk of injury! If the tension is too
low, the driven band saw roller may spin and the band saw blade may stop.
Therefore check the saw band tension before each start-up!
Procedure:
1.
Disconnect machine from the power supply.
2.
Remove table inlay and fixing pin
3.
Remove rip fence guide.
4.
Open the wheel cover
5.
Loosen the saw blade run setting wheel (K).
6.
Reduce the tension of the saw band by turning on the handwheel (R).
7.
Unthread the old band saw blade through the work table.
8.
Thread in a new saw band and place it over the two wheels. (Observe
cutting direction: The teeth must point downwards in the cutting
direction.)
9.
Tension the saw band with the handwheel (R). (The saw band tension
is correct if you press against it with your finger laterally in the centre
of the saw band and the saw band yields by a maximum of 1 to 2
millimetres.)
10.
Check with a few manual turns that tracking of the sawblade is correct (the saw band
should be in the middle of each wheel). If necessary readjust by means of the saw band
adjusting wheel (K).
11.
Fix the bandsaw blade tracking wheel.
12.
Close wheel cover, mount stop guide and reattach table insert and fixing pin.
13.
Adjust saw band guide.
16.2
Adjusting bandsaw blade tracking
If the band saw blade tracking does not run properly (centred), the band saw blade tracking must
be readjusted. Clamping screw K must be loosened and with the hand wheel (K) the upper wheel
must be tilted either forwards or backwards, then the tracking must be checked again. This
procedure may have to be repeated several times to ensure correct running.
16.3
Adjusting the saw band guide
N O T E
Adjust the saw band guide only after the blade tension and the running of the saw
band have been adjusted and checked. Correct adjustment of the saw blade guide is
important. The saw band becomes unusable if the teeth touch the guides while the
saw band is running.
16.3.1
Height Adjusting protective device
1.
Always lower the upper saw band guide as close as
possible (5 - 10 mm) to the workpiece.
2.
To adjust the height, open the clamping screw (K)
and turn the handwheel (H) until the desired height
is reached.
3.
Tighten the clamping screw (K) again afterwards.