Operating and Maintenance Manual
©
HOFFMANN MU3 & MU3-D
• Version 7.205.00 • 01-2018
18
14
Calibrating Top Display to set the routing stroke
1. Verify that electrical power has been disconnected
– keep power cord and plug in your line of sight.
2. Loosen locking lever for height adjustment bar (5) and let height adjustment bar (4) rest on motor
bracket.
3. Carefully turn collet nut until outermost tip of dovetail bit is pointed upward (toward table surface)
4. Place a piece of moulding or wood on top of chip breaker and pull main handle to raise motor until tip of
router bit touches underside of moulding (main handle cannot not be pulled any further at this point)
5. While holding main handle down, tighten locking lever for height adjustment bar
6. Release main handle to lower motor back down to home position
7.
Press buttons “F” and “SET” on upper digital display to reset display to “0” (zero)
8.
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”
Outermost tip of router bit should point
upward for accurate calibration.
