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SPECIFIC SAFETY RULES
•Operate power tool by insulated grasping
surfaces, when performing an operation where
the accessory may contact hidden wiring or
its own cord. Accessory contacting a "live" wire
may make exposed metal parts of the power tool
"live" and could give the operator an electric shock.
•Wear ear protectors. Exposure to noise can
cause hearing loss.
•Maintain tools carefully. Keep handles dry, clean
and free from oil and grease. Follow instructions for
lubricating and changing accessories. Periodically
inspect tool cords and extension cords for damage.
Have damaged parts repaired or replaced by a
MILWAUKEE service facility.
• Maintain labels and nameplates. These carry
important information. If unreadable or missing,
contact a MILWAUKEE service facility for a free
replacement.
• WARNING: Some dust created by power sanding,
sawing, grinding, drilling, and other construction
activities contains chemicals known to cause
cancer, birth defects or other reproductive harm.
Some examples of these chemicals are:
• lead from lead-based paint
• crystalline silica from bricks and cement and
other masonry products, and
• arsenic and chromium from chemically-treated
lumber.
Your risk from these exposures varies, depending
on how often you do this type of work. To reduce
your exposure to these chemicals: work in a well
ventilated area, and work with approved safety
equipment, such as those dust masks that are spe-
cially designed to filter out microscopic particles.
SPECIFICATIONS
Cat. No.
Amps
Volts AC
4004-20LC
20
FUNCTIONAL DESCRIPTION
5
1
1. Twist-lock plug
2. Cord
3. Gear shift lever
4. Threaded spindle
5. Nameplate
SYMBOLOGY
Amperes
Volts
Alternating Current
No Load Revolutions
per Minute (RPM)
Underwriters Laboratories, Inc.
®
Recognized Component
C
US
Speed
120
Low - 300
High - 600
4
EXTENSION CORDS
Grounded tools require a three wire extension
2
cord. Double insulated tools can use either a two
or three wire extension cord. As the distance from
the supply outlet increases, you must use a heavier
gauge extension cord. Using extension cords with
inadequately sized wire causes a serious drop in
voltage, resulting in loss of power and possible tool
damage. Refer to the table shown to determine the
required minimum wire size.
The smaller the gauge number of the wire, the
3
greater the capacity of the cord. For example, a 14
gauge cord can carry a higher current than a 16
gauge cord. When using more than one extension
cord to make up the total length, be sure each cord
contains at least the minimum wire size required.
If you are using one extension cord for more than
one tool, add the nameplate amperes and use the
sum to determine the required minimum wire size.
Guidelines for Using Extension Cords
4
• If you are using an extension cord outdoors, be
sure it is marked with the suffix "W-A" ("W" in
Canada) to indicate that it is acceptable for outdoor
use.
• Be sure your extension cord is properly wired
and in good electrical condition. Always replace a
damaged extension cord or have it repaired by a
qualified person before using it.
• Protect your extension cords from sharp objects,
excessive heat and damp or wet areas.
Recommended Minimum Wire Gauge
For Extension Cords*
Nameplate
25'
Amperes
0 - 2.0
18
2.1 - 3.4
18
3.5 - 5.0
18
5.1 - 7.0
18
7.1 - 12.0
16
12.1 - 16.0
14
16.1 - 20.0
12
* Based on limiting the line voltage drop to five volts at
150% of the rated amperes.
READ AND SAVE ALL
INSTRUCTIONS FOR FUTURE USE.
WARNING
grounding wire can result in the risk of elec-
tric shock. Check with a qualified electrician
if you are in doubt as to whether the outlet is
properly grounded. Do not modify the plug
provided with the tool. Never remove the
grounding prong from the plug. Do not use
the tool if the cord or plug is damaged. If
damaged, have it repaired by a MILWAUKEE
service facility before use. If the plug will not
fit the outlet, have a proper outlet installed by
a qualified electrician.
MILWAUKEE Dymodrills are provided with a 20
amp locking plug (NEMA L5-20).
Grounded Tools:
Tools with Three Prong Plugs
Tools marked "Grounding Re-
quired" have a three wire cord
and three prong grounding plug.
The plug must be connected to
a properly grounded outlet (See
Figures A and B). If the tool should
electrically malfunction or break
down, grounding provides a low
resistance path to carry electricity
away from the user, reducing the
risk of electric shock.
The grounding prong in the plug is connected
through the green wire inside the cord to the
grounding system in the tool. The green wire in the
Extension Cord Length
cord must be the only wire connected to the tool's
grounding system and must never be attached to
50'
75'
100'
150'
an electrically "live" terminal.
Your tool must be plugged into an appropriate out-
18
18
18
16
let, properly installed and grounded in accordance
18
18
16
14
18
16
14
12
with all codes and ordinances. The plug and outlet
16
14
12
12
should look like those in Figures A and B.
14
12
10
--
Double Insulated Tools:
12
10
--
--
Tools with Two Prong Plugs
10
--
--
--
Tools marked "Double Insulated"
do not require grounding. They
have a special double insulation
system which satisfies OSHA
requirements and complies with
the applicable standards of Un-
derwriters Laboratories, Inc., the
Canadian Standard Association and the National
Electrical Code. Double Insulated tools may be
used in either of the 120 volt outlets shown in
Figures C and D.
WARNING
always use a Ground Fault Circuit Interrupter
(GFCI) with diamond coring equipment to
reduce the risk of shock hazards. Always
position the GFCI as close as possible to the
power source.
5
GROUNDING
Improperly connecting the
Fig. A
Fig. B
Fig. C Fig. D
To reduce the risk of injury,
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