Fig.7.1
Fig.7.2
Fig.7.3
7.
Drive Belt Adjustment & Speed Change
7.1 Adjusting the drive belt tension
Use the belt tensioning handle
(See Fig.7.1)
to adjust the
tension of the drive belt. Rotate the handle anti-clockwise
to increase the tension and clockwise to decrease tension.
As a guide the belt is adequately tensioned when using the
index finger to impart reasonable pressure on the belt - the
belt should not deflect more than 1/4”. But like tensioning a
bandsaw blade this is very subjective and the best test is in
operation, if the belt isn’t slipping or wearing excessively then
the drive belt is tensioned correctly.
7.2 Changing the Blade Speed
The BS300 has two blade speeds 820 m/min for wood and
380 m/min for some plastics and acrylics. This machine is not
suitable for cutting metals.
The lower bandwheel has two, integral, multi vee form pulleys
and the motor shaft has a twin multi vee form pulley.
The vee belt passes around the bandwheel pulley, the motor
pulley and the plain tension roller. The belt tension is released
and applied by using the crank handle, this moves the tension
roller and allows the speed to be changed
(See Fig.7.1)
.
High Speed 820 m/min
Before changing the speed always make sure the machine
has been isolated from the mains supply.
For the high speed the belt should be fitted to the rear
pulley on both the motor and bandwheel.
(See Fig.7.2).
Lower Speed 380 m/min
Before changing the speed always make sure the machine
has been isolated from the mains supply.
For the low speed the belt should be fitted to the front
pulley on both the motor and bandwheel
(See Fig.7.3).
CAUTION!
Before carrying out any adjustments or maintenance
ensure that the machine is isolated and disconnected
from the electricity supply.
BELT TENSIONING HANDLE
18
19
Содержание BS300
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