Limit Switches - Grizzly G0812 Owner's Manual

Limit Switches

Limit switches shut off the motor at the end of
a cut, limit the maximum headstock travel, and
prevent the machine from operating if the blade
is not properly tensioned. If these functions do
not operate correctly, you will need to adjust the
appropriate limit switch.
Tools Needed
Phillips Head Screwdriver #2 ............................ 1
Open-End Wrench 8mm.................................... 1
Open-End Wrench 19mm .................................. 1
Adjusting Blade Tension Switch
1.
DISCONNECT MACHINE FROM POWER!
2.
Tension bandsaw blade for blade type
(refer to Tensioning & Tracking Blade on
Page 27).
3.
Loosen screws that secure blade tension limit
switch (see Figure 86) and slide switch bot-
tom so it just touches switch plate.
Limit Switch
Figure 86. Blade tension limit switch screws.
4. Start hydraulic motor.
5. Turn tension handwheel counterclockwise
turn. The motor should turn OFF. If it does
not, adjust switch closer to plate and repeat
Steps 3–5.
Model G0812 (Mfd. Since 2/16)
Qty
Plate
Screws
Adjusting Upper & Lower Limit
Switches
The upper limit switch should only be adjusted if
the blade does not shut off or the headstock does
not move back to the top of travel after the cut is
complete.
The lower limit switch can be adjusted to limit
saw headstock travel to match the height of the
workpiece. This speeds up repetitive cuts by
eliminating unnecessary saw headstock travel.
To adjust limit switches:
1. Raise headstock several inches, start blade,
and lower headstock. When blade reaches
bottom of travel, it should be just below table
level but not touching it, and headstock should
briefly contact stop bolt (see Figure 87)
before blade shuts off and headstock moves
back to top of its travel.
— If headstock touched stop bolt and moved
back to top of its travel, proceed to Step 6.
— If blade continued moving or headstock
did not move upward, proceed to Step 2.
— If headstock did not contact stop bolt,
adjust stop bolt height (refer to Downfeed
Stop Bolt on Page 54), then repeat Step 1.
⁄
1
2
Figure 87. Headstock stopped against downfeed
2.
DISCONNECT MACHINE FROM POWER!
Downfeed
Stop Bolt
stop bolt.
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