Record Power BS400 Premium, Оригинальное руководство пользователя

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A B
7 3
5. Adjustment of the Table & Installation of Blades - Cont.
Fig. 5.6
Fig. 5.7
Winged nut
Tracking knob
Cam Handle
Fig. 5.4
Blade tensioning wheel
Blade tension indicator
Fig. 5.5
BLADE SETUP
CAUTION!
Before carrying out any adjustments or maintenance ensure
that the machine is isolated and disconnected from the
electricity supply.
5.4 Tensioning the blade
The blade tensioning wheel should be used to increase or decrease tension
see
Fig. 5.4
. The only truly accurate way to check a blade is with a tension
meter. These are very expensive so most users may need another method.
The blade tension indicator,
Fig. 5.4 should be used first, as a guide to
the correct tension. We then suggest testing the tension by the amount
the blade will deflect sideways. First set the guides to 6 inches above the
table, making sure the saw is turned off push the blade sideways with a
reasonable amount of pressure using the push stick.
A correctly tensioned blade should not move more than a 1/4” sideways,
see
Fig. 5.5, A
. If the blade is over-tightened, as in
Fig. 5.5 B
, the blade
could be damaged.
However perhaps the most tried and tested way of blade tensioning is
simply: If the bandsaw is cutting accurately then the blade is tensioned
correctly, if the blade tends to wander and an accurate cut cannot be
achieved then the blade tension needs adjusting.
If the machine is to stand idle for a period it is good practice to slacken
tension and re-tension when next using. On the BS400 the simplest way to
release and re-tension the blade is to use the cam handle located on the
back on the machine.
Fig. 5.6
.
5.5 Tracking the Bandsaw blade
Isolate the machine from the supply by unplugging the mains plug. Set
the tracking of the blade before setting the blade guides. Once the blade
is tensioned, track the blade by turning the upper bandwheel by hand and
adjusting the tracking knob see
Fig. 5.6 . When viewed from back of the
machine turning the tracking knob clockwise the blade will move towards
the back of the bandwheel, by turning the tracking knob anti-clockwise
the blade will move to the front of the bandwheel. The blade should run
as close to the centre of the bandwheel as possible, as shown see
Fig.
5.7 . On 1/4”, 3/8” and 1/2” blades it may be necessary to run the blade
to rear of the bandwheel. After the blade is tracked in the desired position
on the bandwheel, rotate the band wheel several more times by hand
without any further adjustment ensuring that the blade remains in the
same position. Once this has been achieved lock the tracking knob with
the winged nut see
Fig. 5.6
.
The machine should then be run for a few seconds before any adjustment
of guides are carried out. It takes a few revolutions of the band wheel
for the effect of adjustment on the tracking knob to become apparent.
To avoid over adjusting, make small gradual adjustments on the tracking
knob and revolve the band wheel a few times to check the alignment of
the blade before making further adjustments.
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