Hoffmann PP2 Operating Manual page 11

Hoffmann PP2 Dovetail Routing Machine
11. Change of router bit
A
LWAYS DISCONNECT THE ELECTRICAL POWER SUPPLY AND COMPRESSED AIR LINE BEFORE
ATTEMPTING ANY SERVICE
Follow proper "Lock-Out / Tag-Out" procedures as specified by the Occupational Safety and
Health Administration "OSHA".
1. Verify that electrical power and compressed air supply has been disconnected.
2. Loosen the lock-nut and raise the motor carriage manually by turning the threaded stem on the back of
the motor carriage. Raise the carriage until the router bit is approx. 1/4" above the machine table.
3. Remove the old chip breakers from the table recess and discard.
4. Loosen the hex head screw in the black motor bracket and carefully slide the motor out.
5. Use the included metric wrenches (18mm & 22mm) to open the ¼" or 8mm collet and remove the old
router bit.
6. Install new bit and tighten collet securely.
Distance between tip of router bit and top of collet should be:
For W-1 router bit: 15.5 mm = 0.610"
For W-2 router bit: 17.0 mm = 0.669"
For W-3 router bit: 19.0 mm = 0.749"
7. Slide the motor back into the bracket and use the square stop to set the proper distance. The stop has
three steps in one side (W1, W2, W3) and one large step machined in the opposite for W4 router bits.
Slide the square stop out of the fence rail and remove the locking lever, washer and square nut. Place
the stop upside down on the table to use.
Use the smallest step for W-1, the middle step for W-2 and the deepest step for W-3.
8. Lower the carriage to its home position.
9. Make a test cut and verify proper settings by inserting a Hoffmann key.
10. Raise the carriage again until the bit is approx. 2" above the table, then install a new chip breaker
insert. Place a piece of scrap wood over the insert and slowly lower the running router bit down through
the wood. The scrap wood eliminates tearout on the surface of the chip breaker.
Hold the scrap wood securely in place and be aware of the turning bit at all times. Lower the router
carriage by turning the threaded stem slowly. When the motor has shut off, secure the threaded stem
with the locknut.
Machined steps for W1-W2-W3 bits
Hoffmann Machine Company, Inc.
Phone: (828) 430 - 4510
- 10 -
,
MAINTENANCE OR REPAIR WORK
Square or "butt-joint" stop
1386 Drexel Road
Fax: (828) 430 - 4620
www.Hoffmann-USA.com
!
Machined step for W4 bit
Valdese, NC 28690
e-mail: info@Hoffmann-USA.com