user manual

Model G0747/G0748 (Mfg. Since 8/12)
-35-
Setting Model G0748 Spindle Speed
The Model G0748 has variable spindle speeds
from 60 to 4200 RPM. Setting the spindle speed
involves 1) Selecting the spindle speed range,
and 2) using the variable-speed handwheel to
select the spindle speed.
To set the Model G0748 spindle speed:
1. Make sure the spindle is completely stopped.
2. Pull the spindle speed range selector knob
(see Figure 32) out, position the selector
in the high or low position, then release the
knob to seat the knob pin in the detent.
Note: If it is difficult to move the range selec-
tor, rotate the spindle by hand to help mesh
the gears until the selector moves freely.
Figure 32. Model G0748 spindle speed selector.
Spindle Speed
Range Selector
3. Use the spindle switch to start spindle rota-
tion.
For the Model G0748 ONLY, always make
sure that the spindle rotation has started
and is at a constant speed before using
the variable-speed handwheel to adjust the
spindle speed. Otherwise, the moving parts
inside the belt housing could be damaged
and void the warranty.
4. Slowly rotate the speed handwheel shown
in Figure 33 until the desired speed is dis-
played in the speed indicator window for the
speed range selected.
Figure 33. Model G0748 variable-speed
controls.
Variable-Speed
Handwheel
High-Low Range
Speed Indicator