Operating and Maintenance Manual
©
HOFFMANN MU3-P & MU3-PD
• Version 7.205.00 • 01-2018
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14
Calibrating Top Display to set the routing stroke
1. To calibrate the routing stroke display, the exact
“switching point” of the pneumatic valve (10) must be
determined.
2. Set routing height adjustment bar (4)
to “0” and place
a scrap piece of wood in the machine.
3.
Lower the hold down clamp (11) to approx. 1/16” –
1/8” above the material and make a test cut
4. Multiple test cuts with the routing height adjustment
bar moved slightly up or down may be necessary to
find the exact spot where the router bit just barely
touches or “scratches” the test piece.
5.
Press buttons “F” and “SET” on upper digital display
to reset display to “0” (zero)
6.
Display is now calibrated to show “0” when tip of
router bit is flush or level with table surface.
14.1 Calibrating Bottom Display to set keyway position.
The minimum distance from the miter tip to the center of the dovetail
keyway on MU-
3 series machines is 3.2mm or 0.125”.
(In other words, when the Center Fence Plate is moved all the way forward,
the keyway will be routed 3.2mm or 0.125” from the miter tip.)
Calibrating the keyway location display is slightly different from the routing height display in that the
“starting
point” or “reference position” is not “0” (zero) but it must read 3.2mm or 0.125”.
1. Remove locking lever for fence plate (8) and slide fence plate (9) all the way forward (toward motor).
2. Press
for 3 seconds to enter Parameter Mode
3. Press
repeatedly until Parameter 9 (P9) is reached
4. Press
again to display numeric values
5. Press
to select digit you wish to change
6. Press
to increase value of digit in one step increments
7. Press
again for 3 seconds to return to normal operating mode.
8. Press
and
simultaneously to calibrate display to newly stored reference number 3.2mm
0.125”
11
4
11
