Grizzly G0781, Owner'S Manual

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Model G0781 (Mfd. Since 2/15)
Spindle Break-In
The spindle break-in procedure distributes lubri-
cation throughout the bearings to reduce the risk
of early bearing failure if there are any "dry" spots
or areas where lubrication has settled in the bear-
ings. You
must complete this procedure before
placing operational loads on the spindle for the
first time when the machine is new or if it has
been sitting idle for longer than 6 months.
Always start the spindle break-in at the lowest
speed to minimize wear if there are dry spots.
Allow the spindle to run long enough to warm up
and distribute the bearing grease, then incremen-
tally increase spindle speeds and repeat this pro-
cess at each speed until reaching the maximum
spindle speed. Following the break-in procedure
in this progressive manner helps minimize any
potential wear that could occur before lubrication
is fully distributed.
DO NOT perform this procedure indepen-
dently of the Test Run section. The machine
could be seriously damaged if the controls
are set differently than instructed in that
section.
Complete the spindle bearing break-in pro-
cedure to prevent rapid wear and tear of
spindle components once the machine is
placed into operation.
7. Place spindle direction switch in "FOR"
(Forward) position. Lift red Emergency Stop
button to access ON/OFF
switch and to reset
Emergency Stop function, then press green
button. Spindle will not rotate until variable-
speed dial is turned clockwise from the "0" on
control panel.
—When operating correctly, machine runs
smoothly with little or no vibration or rub-
bing noises.
— Investigate and correct strange or unusu-
al noises or vibrations before operat-
ing machine further. Always disconnect
machine from power when investigating or
correcting potential problems.
8. Press Emergency Stop button. The machine
should stop.
—If machine does stop, Emergency Stop
button safety feature is working correctly.
Continue to
Spindle Break-In.
—If machine does not stop, Emergency Stop
button safety feature is not working correct-
ly. This safety feature must work properly
before proceeding with regular operations.
Call Tech Support for help.
Congratulations! The test run is complete.
Continue to
Spindle Break-In.
Figure 11. Location of mill/drill controls (front).
Variable-
Speed
Dial
OFF Button
ON Button
Emergency Stop
Digital Spindle
Speed Readout
6. Turn speed range lever to "LOW" position
(see Figure 1 on Page 4), and rotate vari-
able-speed dial all the way counterclockwise
(to the slowest position).