Grizzly G8689, Owner'S Manual

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G8689 Mini Mill (Mfg. 8/06+)
Test Run and
Spindle Break-in
The Model G8689 has two speed ranges: Low
range is 0–1100; high range is 0–2500 RPM.
It is essential to closely follow the proper break-in
procedures to ensure trouble free performance.
Complete this process once you have familiarized
yourself with all instructions in this manual.
To begin the start up and break-in procedure:
1. Follow all lubrication procedures highlight ed
in
Lubrication
in
Section 6: MAINTENANCE
on Page 28.
2. Make sure there are no obstructions around or
underneath the spindle. Remove the drawbar
if there is no arbor or collet in the spindle.
3. With the spindle at a complete stop, shift the
speed range lever into the low range (see
Figure 11).
Note: If the lever will not drop into gear at
first, rotate the spindle by hand while holding
light pressure on the lever. When the gears
engage, the lever will fall into place.
4. Turn the SPINDLE ON & RPM CONTROL
KNOB ON and let the mill run for a minimum
of 10 minutes on a low speed. The mill should
run smoothly with minimal noise and vibra-
tion.
—If you suspect the mill is not working cor-
rectly, shut the mill OFF and correct the
problem before proceeding further.
—If the mill is running smoothly, proceed.
Figure 11. Speed range lever.
5. Slowly increase the RPM and allow it to run
at a medium RPM for another ten minutes.
6. Slowly increase the RPM and allow it to run
at a high RPM for another ten minutes.
7 .
Turn the mill
OFF. Switch to the high range
and repeat Steps 4–6.
NOTICE
DO NOT attempt to change speed ranges
with the spindle ON. Damage to the spindle
gearing will occur.
NOTICE
Failure to follow start up and spindle break-
in procedures will likely cause rapid dete-
rioration of spindle and other related parts.