Milwaukee Tool 5446-21 - Manual (Page 3)

4 5
Fig. B Fig. C
Fig. A
GROUNDING
WARNING Improperly connecting the
grounding wire can result in the risk of
electric shock. Check with a qualifi ed electri-
cian 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
fi t the outlet, have a proper outlet installed by
a qualifi ed electrician.
Grounded Tools: Tools with Three Prong Plugs
Tools marked “Grounding Required” have a three
wire cord and three prong grounding plug. The
plug must be connected to a properly grounded
outlet (See Figure A). 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
cord must be the only wire connected to the tool's
grounding system and must never be attached to
an electrically “live” terminal.
Your tool must be plugged into an ap-
propriate outlet, properly installed and
grounded in accordance with all codes
and ordinances. The plug and outlet
should look like those in Figure A.
Double Insulated Tools: Tools with Two Prong
Plugs
Tools marked “Double Insulated” do not require
grounding. They have a special double insula-
tion system which satisfi es OSHA requirements
and complies with the applicable standards of
Underwriters 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 B and C.
Grounded tools require a three wire extension
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
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
• If you are using an extension cord outdoors,
be sure it is marked with the suffi x “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 qualifi ed person before using it.
• Protect your extension cords from sharp objects,
excessive heat and damp or wet areas.
READ AND SAVE ALL
INSTRUCTIONS FOR FUTURE USE.
Recommended Minimum Wire Gauge
for Extension Cords*
Extension Cord Length
* Based on limiting the line voltage drop to fi ve volts
at 150% of the rated amperes.
Nameplate
Amperes
0 - 2.0
2.1 - 3.4
3.5 - 5.0
5.1 - 7.0
7.1 - 12.0
12.1 - 16.0
16.1 - 20.0
25'
18
18
18
18
16
14
12
75'
18
18
16
14
12
10
100'
18
16
14
12
10
150'
16
14
12
12
50'
18
18
18
16
14
12
10
EXTENSION CORDS
WARNING To reduce the risk of injury,
always use a side handle when using
this tool. Always brace or hold securely.
ASSEMBLY
WARNING To reduce the risk of injury,
always unplug tool before attaching
or removing accessories or making adjust-
ments. Use only specifi cally recommended
accessories. Others may be hazardous.
OPERATION
WARNING To reduce the risk of injury,
always unplug tool before attaching
or removing accessories or making adjust-
ments. Use only specifi cally recommended
accessories. Others may be hazardous.
WARNING To reduce the risk of injury,
keep hands and cord away from the bit
and all moving parts.
WARNING To reduce the risk of injury,
wear safety goggles or glasses with side
shields.
Adjusting the Side Handle Position
1. Loosen the side handle by unscrewing the side
handle grip (5426-21) or ball (5446-21) until the
side handle rotates freely.
2. Rotate the side handle to the desired position.
3. Tighten the side handle grip or ball securely.
Moving the Side Handle (Cat. No. 5426-21)
1. Remove the side handle by unscrewing the side
handle grip until it comes free.
2. Screw the side handle into the alternate loca-
tion.
3. Tighten the side handle grip securely.
Setting the Depth Gauge
1. Press in the clamp lever.
2. Slide the depth gauge rod backward or forward
until it is set for the desired depth.
NOTE: The drilling
depth is the distance
between the tip of the
bit and the tip of the
depth gauge rod.
3. Release the clamp le-
ver.
Installing Drill Bits and Chisels
Be sure that the shank of the bit is clean. Dirt par-
ticles may cause the bit to line up improperly. Do not
use bits larger than the maximum recommended
capacity of the drill because gear damage or mo-
tor overloading may result. For best performance,
be sure that the bit is properly sharpened and the
shank is lightly greased before use.
SDS Drive System
NOTE: Only use accessories with SDS or SDS
Plus shanks.
1. Unplug the tool.
2. Lightly grease the bit or chisel shank.
3. Insert the bit or chisel into the nose of the tool.
4. Rotate bit slowly until it aligns with the locking
mechanism.
5. Push bit into tool until it locks.
6. Check that the bit is locked properly; it should
be possible to pull the bit back and forth slightly
(about 1/4”).
7. To remove bits and chisels, pull bit holder toward
the rear of tool and remove bit.
NOTE: Use caution when handling hot bits and
chisels.
Electronic Feedback Control Circuit
These hammers have an Electronic Feedback
Control Circuit (EFCC) which helps improve the
operation and life of the tool. It allows the tool to
maintain constant speed and torque between no-
load and load conditions.
Soft Start
The Soft-Start feature reduces the amount of torque
reaction at startup to the tool and the user. This
feature gradually increases the motor speed up
from zero to the top no-load speed.
WARNING To reduce the risk of injury,
when using chisels or other hammering-
only accessories, the action selector must be
set to the "hammering only" position.
Selecting Mode
1. For hammering with
rotation, turn the selec-
tor lever to display the
hammer and twist drill
symbols. (Not available
on Cat. No. 5446-21)
2. For hammering only,
turn the selector lever
to display the hammer
symbol. (See "Selecting
Hammering Speed")
3. To freely rotate the bit
to the desired angle for
chiseling only, turn the
selector lever to display
the 0 symbol.
Fig. 2
Fig. 3
Fig. 4
Drilling
Depth
Fig. 1