Milwaukee 4270-20 Manuel De L'utilisateur page 9

8. Start the drill motor by pulling the drill on/off switch to the "ON" position.
To reduce the risk of injury, always keep hands, rags, clothing, etc.
away from moving parts and chips. Do not try to remove chips while
the cutter is rotating. Chips are sharp and can pull objects into mov-
ing parts (see Fig. 9).
Fig. 9
9. These units have a 8:1 feed ratio: i.e. for every pound applied to the
handle, you create eight pounds on the drill point. Even large bits only
require a small amount of pressure on the handle. Example: 20 Pounds
on the handle creates 160 Pounds on the drill point.
When feeding the cutter into the material, apply only enough force to pro-
duce a curled chip. Applying too little force will result in small broken chips
and increased cutting time. Applying too much force will cause overheating
of the cutter resulting in short cutter life. Overheating of the cutter can be
noticed when cutter and chips turn brown or blue. Excessive force can
cause the cutter to slow down to a point where cutting time will increase.
The use of cutting lubricants will reduce cutting heat and increase cutter
life
Use less feed pressure when slotting or notching because there is less
support for the cutting edges in these situations.
WARNING!
Excessive force will break magnet free.
10. Keep constant pressure throughout the entire operation to
prevent chips and burrs from falling under the cutting edges.
Cutting debris under the cutter can make cutting difficult or
impossible.
11. When the cut is complete, withdraw the cutter while the drill spindle
is still rotating.
12. Stop the drill motor by pushing in the drill on/off switch to the "OFF"
position.
13. When the drill spindle has stopped rotating, use a pliers to remove
cutting debris and chips from the cutter and spindle. Use care to avoid
damaging the cutter teeth.
14. If the slug is still present in the cutter, rotate the feed handle to high-
est position. This will eject the slug from the cutter.
The center pin is spring loaded. Provide protection from ejected slug
for people and property below cutting area.
15. Make sure you have a fi rm grip on the tool before turning off the
magnet.
Push the magnet switch to the "OFF" position. The magnet
indicator light will turn off.
WARNING!
page 9