Milwaukee 0721-20 manual Operation, Applications

OPERATION

WARNING

Electric Brake

The electric brake engages when the trigger

WARNING

To reduce the risk of injury, keep hands away from the bit and all mov- ing parts. Always wear safety goggles or glasses with side shields. Always remove the chuck key from the chuck after each use.

Installing Bits into Keyed Chuck

Fig. 5

Tighten

Loosen

1.Open the chuck jaws wide enough to insert the bit. Be sure the bit shank and chuck jaws are clean. Dirt particles may prevent the bit from lining up properly.

2.When using drill bits, insert the bit into the chuck. Center the bit in the chuck jaws and lift it about 1/16" off of the bot- tom. Tighten the chuck jaws by hand to align the bit.

When using screwdriver bits, insert the bit far enough for the chuck jaws to grip the bit shank. Tighten the chuck jaws by hand to align the bit.

3.Place the chuck key in each of the three holes in the chuck, turning it clockwise as shown. Tighten securely.

4.To remove the bit, insert the chuck key into one of the holes in the chuck and turn it counterclockwise.

Forward/Reverse/Trigger Lock Switch

To set the direction of bit rotation or lock the trigger, move the forward/reverse/trigger lock switch to the following positions (Fig. 6):

Fig. 6

For forward rotation (clockwise):Move the switch to the right." " will be displayed above the switch. To vary the speed in forward rotation, increase or decrease pressure on the trigger.

For reverse rotation (counter-clockwise): Move the switch to the left. " " will be dis- played above the switch. To vary the speed in reverse rotation, increase or decrease pressure on the trigger.

To lock the trigger: Move the switch to the center. "" will be displayed above the switch. The trigger will not work while the switch is in the locked position. Always lock the trigger and remove the battery pack before perform- ing maintenance and changing accessories. Lock the trigger when storing the tool and when the tool is not in use.

Starting, Stopping and Controlling Speed

1.To start the tool, grasp the handle firmly and pull the trigger.

2.To vary the speed, increase or decrease the pressure on the trigger. The further the trigger is pulled, the greater the speed.

3.To stop the tool, release the trigger. Make sure the tool comes to a complete stop before laying the tool down.

To reduce the risk of personal injury, hold the tool securely. Brace tools with side handles as shown (Fig. 7, 8

&9). If the bit binds, the tool will be forced in the opposite direction. Bits may bind if they are misaligned or when breaking through a hole. Wood boring bits can also bind if they run into nails or knots.

Fig. 7 Reaction Reaction

ReverseForward

rotationrotation Bracing against a stud

Fig. 8

Forward rotation

Reaction

Bracing against your leg

Fig. 9 Forward rotation

Reaction

Bracing against the floor

is released, causing the bit to stop and allow- ing you to proceed with your work. Generally, the bit stops within two seconds. However, there may be a delay between the time you release the trigger and when the brake engages. Occasionally the brake may miss completely. If the brake misses frequently, the tool needs servicing by an authorized MILWAUKEE service facility.

Cold Weather Operation

The V28 Lithium-Ion battery pack can be used in temperatures down to -4°F. When the battery pack is very cold, it may pulse for the first minute of use to warm itself up. Put the battery pack on a tool and use the tool in a light application. After about a minute, the pack will have warmed itself up and operate normally.

APPLICATIONS

Selecting Bits

When selecting a bit, use the right type for your job. For best performance, always use sharp bits.

Drilling

1.Before drilling, be sure the workpiece is clamped securely. Use backing material to prevent damage to the workpiece dur- ing breakthrough.

2.When starting a hole, place the drill bit on the work surface and apply firm pressure. Begin drilling at a slow speed, gradually increasing the speed as you drill.

3.Always apply pressure in line with the bit. Use enough pressure to keep the drill biting, but do not push hard enough to stall the motor.

4.Reduce pressure and ease the bit through the last part of the hole. While the tool is still running, pull the bit out of the hole to prevent jamming.

8 9