Milwaukee 6278-20 Specific Safety Rules, Symbology, Extension Cords, Grounding, Specifications

SPECIFIC SAFETY RULES

SYMBOLOGY

EXTENSION CORDS

•Hold power tool by insulated gripping surfaces, when performing an operation where the cutting accessory may contact hidden wiring or its own cord. Cutting accessory contacting a live wire may make exposed metal parts of the power tool live and could give the operator an electric shock.

•Use clamps or another practical way to secure and support the workpiece to a stable platform. Holding the work by hand or against your body leaves it unstable and may lead to loss of control.

•Keep hands away from all cutting edges and moving parts.

•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

Double Insulated

Volts Alternating Current

Amps

No Load Strokes per Minute (SPM)

Mexican Approvals Marking

GROUNDING

WARNING Improperly connecting the grounding wire can result in the risk of electric shock. Check with a qualified 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

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 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		Extension Cord Length
Amperes		25'	50'	75'	100'	150'
0 - 2.0		18	18	18	18	16
2.1	- 3.4	18	18	18	16	14
3.5	- 5.0	18	18	16	14	12
5.1	- 7.0	18	16	14	12	12
7.1 - 12.0		16	14	12	10
12.1	- 16.0	14	12	10
16.1	- 20.0	12	10

*Based on limiting the line voltage drop to five volts at 150% of the rated amperes.

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.

FUNCTIONAL DESCRIPTION

1.Quik-Lok						12
tension lever 13
2.Transparent
blade cover
3. Anti-Splinter						11
Device
4. Blade
5. Shoe cover
6. Shoe
7. Orbital action
selector lever
1
2						10
3
						9
4
			6	7	8
8. Shoe adjustment		5
lever		11. Trigger
9. Tilt angle scale
10. Dust collection		12. Lock button
attachment		13. Speed selector dial
	SPECIFICATIONS
Cat.	Volts			No Load		Length
		Amps Strokes Per				of
No.	AC
				Minute		Stroke
6278-20120V~50-60Hz		6		500-3000		1"

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.

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 appropriate outlet, properly installed and grounded in ac- cordance with all codes and ordi- nances. The plug and outlet should Fig. A 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 satisfies OSHA requirements and complies with the applicable standards of

Underwriters Laboratories, Inc.,
the Canadian Standard Asso-
ciation and the National Elec-
trical Code. Double Insulated
tools may be used in either of
the 120 volt outlets shown in	Fig. B Fig. C
Figures B and C.

READ AND SAVE ALL INSTRUCTIONS FOR FUTURE USE.

ASSEMBLY

WARNING To reduce the risk of injury,			WARNING To reduce the risk of injury,
always unplug tool before changing or			always use saw with transparent blade
removing accessories. Only use accessories			cover in place. Sawdust and wood chips can
specifically recommended for this tool. Others			be thrown during use.
may be hazardous.			Using the Transparent
Installing Saw Blades			Blade Cover
Use only T-Shank jig saw blades.			1. Unplug tool.
1. Unplug tool.			2. To install, place the
2. Remove anti-splinter			transparent blade cov-
device and transparent			er in front of the blade
blade cover.			and slide it into place.
3. Pull out and hold the			The tabs will snap into
Quik-Lok tension lever.			the slots on the hous-
4. Fit the saw blade into			ing.
the groove in the support			3. To remove, press in
roller and push it firmly			the sides of the transparent blade cover and pull
into the plunger as far			away from the blade.
as it will go; the lug of the			Using the Anti-Splinter Device
saw blade must be in the
			The anti-splinter device helps stabilize the work-
plunger.
			piece and reduce workpiece splinter.
5. Release the Quik-Lok tension
			1. Unplug tool.
lever to secure the saw blade.
			2. Slide the anti-splinter de-
6. Check that the saw blade is held
	Slot		vice onto the shoe. Make	Anti-splinter
firmly; the slot in the plunger will		Blade
be at an angle to the blade.			sure the anti-splinter device	device
7. Install the anti-splinter device			is installed flush with the
			bottom of the shoe.
and transparent blade cover.
			NOTE: Do not use the anti-	Shoe
			splinter device or dust collec-
			tion attachment when making
			bevel/angle cuts.

4 5