DeWalt DCT419 Instruction Manual page 5

into walls, such as in a basement, and standard 16" (40 cm) and 24"
(60 cm) stud spacing practices.
WARNING: You should always use caution when nailing,
cutting or drilling in ceilings, walls and fl oors that may contain
wiring or pipes near the surface. Shielded, dead or non-powered
wires will not be detected as live wires. Remember that studs or
joists are normally spaced 16" (40 cm) or 24" (60 cm) apart and are
usually 1-1/2" (38 mm) in width. Beware of anything closer together
or a different width. Always turn the power off when working near
electrical wires. Also, shut off gas and water supplies.
WARNING: To reduce the risk of injury and electric shock,
always turn off power when working near electrical wires. Metal
shielded wires or those in metal conduit will not be detected. Use
extreme caution in these circumstances or whenever live AC wiring
is present. Test the functionality of the AC, detect on a well known
power supply prior to measurement.
WARNING: Live wires deeper than 2" (50.8 mm) from the
surface, in plastic conduit, behind plywood sheer wall or
metallic wall coverings, cables operating at DC current or wires
used in telecommunications and computer systems may not be
detected. Wires that are not live may be detected as metal objects.
WARNING: Do not use the tool to detect AC voltage in un-
insulated, exposed or free wires. Do not use as a substitute for a
volt meter.
WARNING: Detection values can be impaired through certain
ambient conditions. These include the proximity of other equipment
that produce strong magnetic or electromagnetic fi elds, moisture,
metallic building materials, foil laminated insulation materials or
conductive wall paper or tiles. Use of transmitting systems such as
WLAN, UMTS, radar, transmitting masts or microwaves can infl uence
the measurements.
CAUTION: Do not use on humans or animals. This is not for
human or animal use and can cause injury if used.
CAUTION: When not in use, place hand-held wall scanner on
its side on a stable surface where it will not cause a tripping or
falling hazard. Some tools with large battery packs will stand upright
on the battery pack but may be easily knocked over.
• The label on your tool may include the following symbols. The
symbols and their defi nitions are as follows:
V ................... volts
Hz ................. hertz
min ............... minutes
or DC ... direct current
................. Class I Construction
..................... (grounded)
................. Class II Construction
(double insulated)
.../min .......... per minute
BPM ............. beats per minute
IPM ............... impacts per minute
RPM ............. revolutions per
minute
sfpm ............. surface feet
..................... per minute
SPM ............. strokes per minute
Detection through Special Surface
Conditions
WALLPAPER
The hand-held wall scanner will function normally on walls covered
with wallpaper or fabric, unless the materials are metallic foil, contain
metallic fi bers or are still wet after application.
3
A ...................... amperes
W ..................... watts
or AC .......... alternating
current
or AC/DC ... alternating
........................ or direct
current
n o .................... no load
speed
n ...................... rated
........................ speed
.................... earthing
terminal
..................... safety alert
symbol