Spindle Break-In - Grizzly G0791 Owner's Manual

11. Move Mill FWD/REV switch (see Figure 25,
Page 29) to FWD position.
12. Push POWER START button. Mill spindle
should begin to rotate.
— When operating correctly, machine will
run smoothly with little or no vibration or
rubbing noises.
— Investigate and correct strange or unusual
noises or vibrations before operating
machine further.
machine from power when investigating or
correcting potential problems.
13. Move Mill FWD/REV switch to "Mill" position
(see Figure 25 on Page 29) to turn mill OFF.
14. Move Mill FWD/REV switch to REV position,
repeat Step 12, then push Emergency Stop/
RESET button to turn mill OFF.
15. Without resetting Emergency Stop/RESET
button, try to restart spindle rotation, as
instructed in Step 12. Spindle should not
start.
— If spindle rotation does start with RESET
button pressed in, RESET button safety is
not operating correctly. This safety feature
must operate properly before continuing
operation. Disconnect machine from power,
and call Tech Support for help.
Congratulations! The test run is complete. Perform
the following Spindle Break-In procedure.
-30-
Always disconnect

Spindle Break-In

To perform spindle break-in:
1. Successfully complete Test Run procedure
beginning on Page 28.
2. Run lathe spindle at 70 RPM for 10 minutes
in each direction (first forward, then reverse).
3. Turn lathe OFF. Move lathe spindle speed
levers to C and 1 for 200 RPM, then run lathe
for 5 minutes in each direction.
Model G0791 (Mfd. Since 9/15)