DeWalt D25901 Instruction Manual download pdf (Page 25)

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contacting a “live” wire may make exposed metal parts of the

power tool “live” and could give the operator an electric shock.

• Be certain that the material being drilled does not conceal

electric or gas service and that their locations have been

verified with the utility companies.

• Keep a firm grip on the tool at all times. Do not attempt to

operate this tool without holding it with both hands. Operating this

tool with one hand will result in loss of control. Breaking through

or encountering hard materials such as re-bar may be hazardous

as well. Tighten the side handle securely before use.

• Ensure the chisel is secured in place before operating the

tool.

• In cold-weather conditions or when the tool has not been used

for a longer period of time, let the tool run with no load for several

minutes before use.

• When working above ground level ensure the area below is

clear.

• Do not touch the chisel or the parts close to the chisel

immediately after operation, as they may be extremely hot

and cause burns to the skin.

• Always direct the power cable to the rear, away from the

chisel.

• Do not operate this tool for long periods of time. Vibration

caused by hammer action may be harmful to your hands and

arms. Use gloves to provide extra cushion and limit exposure by

taking frequent rest periods.

• Air vents often cover moving parts and should be avoided.

Loose clothes, jewelry or long hair can be caught in moving parts.

• An extension cord must have adequate wire size for safety.

An undersized cord will cause a drop in line voltage resulting in loss

of power and overheating. When using more than one extension

to make up the total length, be sure each individual extension

contains at least the minimum wire size. The following table shows

the correct size to use depending on cord length and nameplate

ampere rating. If in doubt, use the next heavier gauge. The smaller

the gauge number, the heavier the cord

Voltage (Volts)

Total length of cord in meters (m)

120–127V 0–7 7–15 15–30 30–50

220–240V 0–15 15–30 30–60 60–100

Rated Ampere

range

Minimal cross-sectional area of the

cord in meters (mm

)

0–6A 1.0 1.5 1.5 2.5

6–10A 1.0 1.5 2.5 4.0

10–12A 1.5 1.5 2.5 4.0

12–16A 2.5 4.0 Not Recommended

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 paints,

• 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 specially designed to

filter out microscopic particles.

• Avoid prolonged contact with dust from power sanding,

sawing, grinding, drilling, and other construction activities.

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DeWalt D25901 Instruction Manual Page 25

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