Luna BBS500 Traducción De Instrucciones Originales En Inglés página 39

Fig. 9
Lower Guides
To adjust the lower blade guides, fi rst slacken off the hex nut (A--Fig.10)
then move the guide carrier casting to the approx. 1/16" behind the gullets
of the bandsaw blade and tighten the hex nut (A--Fig.10). Next set the roller
guides to within 1/32" of the blade by releasing the screw (B--Fig.10) on
each side of the blade. Finally, adjust the thrust bearing to be just clear of
the back of the blade by unlocking the hex nut (C--Fig.10).
Fig. 10
Adjusting the Rip Fence Guide Scale
Slide the rip fence against to blade along the fence bar. and loosen the fi xing
screw (A--Fig.11). Then move the scale (B--Fig.11) sideways and align the
zero of scale with the blade. Retighten the fi xing screw when the adjustment
is correct. The adjustment may be checked by setting the rip fence to a
thickness and cutting a test piece.
When the adjustment is correct the thickness of the test piece will corre-
spond with the rip fence scale setting.
Fig. 11
Adjusting the Cutting Height
Loosen the Rise & Fall lock knob (Fig.12) and turn the Rise & Fall
Handwheel (Fig.12) to raise or lower the guide post/upper blade guide
assembly to the desired height. Then tighten the Rise & Fall
Lock Knob. Note: The bottom edge of the guide bearings are
approximately 1/4" above the top surface of the workpiece.
Fig. 12
Changing the Blade Speed
WARNING! Before carrying out any adjustment or maintenance, ensure that
the machine is isolated and disconnected from the electricity supply.
This Bandsaw has two blade speeds, low speed and high speed.
The lower bandwheel (A--Fig.13) has two, integral, multi-vee form pulleys
and the motor shaft has a twin multi-vee form pulley (B--Fig.13).
The multi-vee belt (C--Fig.13) passes around the bandwheel pulley and the
motor pulley. The belt tension is released and applied by using the Belt
Tension & Speed Change Handwheel (D--Fig.13). For the high speed, the
belt should be fi tted to the rear pulley on both the motor and bandwheel. As
shown in Fig.13. For the low speed, the belt should be fi tted to the
front pulley on both the motor and bandwheel. As shown in Fig.13.
Fig. 13
Replacing the Bandsaw Blade
WARNING! Unplug the machine from the electricity supply. This ensures
that the Bandsaw will not accidentally turn on if the ON/OFF switch is
bumped.
a) Open the top and bottom bandwheel covers by turning the door locking
knobs.
b) Remove the rip fence rail from the front of the table by releasing the 4
thumb screws (Fig. 3 on page 5).
c) Release the blade tension by rotating the Blade Tension Cam handle
(Fig.14) clockwise.
d) Remove the saw blade by feeding it through the slot in the table, upper
and lower blade guides and the slot in the spine of the machine being care-
ful not to cut yourself. Wear gloves if necessary.
e) When fitting the new
blade ensure the blade teeth are pointing downwards and towards you at the
position where the blade passes through the table.
f) Re-tension the new blade by rotating the quick release lever (Fig.14)
counterclockwise and check the blade tracking. The blade should run in the
center of the bandwheel. Refer to "Tracking the Saw Blade" on page 6 for
more details.
g) Reset the blade guides as described in the section "Adjusting the Blade
Guides" on page 7.
h) Reset the blade tension as described in the section "Adjusting the Blade
Tension" on page 6.
i) Replace the rip fence guide, and retighten the 4 thumb screws (Fig. 3 on
page 5).
j) Close and lock both the bandwheel doors before reconnecting the power
supply.
Fig. 14
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