33
Changing speed and belt tension on the 4-speed spindle (fig 37, 38)
The machine is equipped with the optional 4 speed spindle, the speed at which the spindle
turns can be read both on the out-and inside of the machine.
This enables you at any time to see at which speed the spindle will be started-up.
After opening the machine rear access door the speed can be changed: first slide the sliding
table to the front thus clearing the accces to the belt spanner system.
Loosen the serrated handle by turning it anti-clock wise and to undo the belt.
When putting a new belt, always ensure the belt is well positionned into the corresponding
grooves of both pulleys.
Close the rear access door: when the door is left open, the machine can not be started-up
since the door is equipped witn a safety switch!
Tension the belt by turning the serrated handle in the clock wise direction. Make sure the
belt is not overtensioned, because this leads to damage of the bearings of both motor and
spindle arbor and will damage
the belt.
A correct tensioned belt should, when pushed in the middle between both pulleys with the
finger give way for about the thickness of the belt.
Check on a regular base the condition of the belt and, if necessary, replace it using only orig-
inal Robland belt (partnr. N8224), belt type: SPZ-700 (9,5 x 700).
(fig. 37)
(fig. 38)
