DeWalt DWE4377 Instruction Manual page 37

the work by hand or against your body is unstable and may
lead to loss of control and injury.
Always use auxiliary handle. Tighten the handle
•
securely. The auxiliary handle should always be used to
maintain control of the tool at all times.
To prevent the spindle end from contacting the
•
bottom of the hole of the hubbed wheel, use
accessories that have a threaded hole depth of
at least 21 mm. Failure to use an accessory with the
appropriate thread depth could result in damage to the
hubbed wheel and injury to the operator or persons in
the area.
The arbor size of hubbed wheels, flanges, backing
•
pads or any other accessory must properly fit the
spindle of the power tool. Accessories with arbor holes
that do not match the mounting hardware of the power
tool will run out of balance, vibrate excessively and may
cause loss of control.
Avoid bouncing the wheel or giving it rough
•
treatment. If this occurs, stop the tool and inspect the
wheel for cracks or flaws.
• Always handle and store wheels in a careful manner.
Do not operate this tool for long periods of time.
•
Vibration caused by the operating action of this tool may
cause permanent injury to fingers, hands, and arms. Use
gloves to provide extra cushion, take frequent rest periods,
and limit daily time of use.
Safety goggles or safety glasses with side shields and
•
a full face shield compliant with ANSI Z87.1 MUST be
worn by the operator and others that are within 50'
(15.2 m) of the use of this product.
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
•
(AWG or American Wire Gauge) for safety. The smaller
the gauge number of the wire, the greater the capacity
of the cable, that is, 16 gauge has more capacity than
18 gauge. 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
lower the gauge number, the heavier the cord.
Minimum Gauge for Cord sets
Total length of Cord in Feet
Volts
120V 25 (7.6)
240V 50 (15.2) 100 (30.5) 200 (61.0) 300 (91.4)
ampere rating
More Not
Than More
Than
0 6 18
6 10 18
10 12 16
12 16 14
(meters)
50 (15.2) 100 (30.5) 150 (45.7)
american Wire Gauge
16 16
16 14
16 14
12 Not Recommended
The label on your tool may include the following symbols. The
symbols and their definitions are as follows:
V ......................... volts
Hz ....................... hertz
min ..................... minutes
or DC ...... direct current
...................... Class I Construction
.../min .............. per minute
BPM .................... beats per minute
IPM ..................... impacts per minute
OPM .................... oscillations per minute
RPM .................... revolutions per minute
sfpm ................... surface feet per minute
SPM .................... strokes per minute
A ......................... amperes
W ........................ watts
Wh ...................... watt hours
Ah ....................... amp hours
or AC ........... alternating current
or AC/DC .... alternating or direct
Features
E-switch Protection
The ON/OFFswitch has a no-volt release function. In the
event of a power outage or other unexpected shut down,
the switch will need to be cycled (turned on and off) to
restart tool.
E-Clutch
This unit is equipped with an E-Clutch (Electronic Clutch),
which in the event of a stall or wheel pinch, the unit will be
shut off to reduce the reaction torque to the user. The switch
needs to be cycled (turned on and off) to restart tool.
Brake
When the trigger switch is released the motor immediately
turns off and electronically brakes, stopping the
accessory quickly to prevent accidental contact and
improve productivity.
Kickback Brake
When a pinch, stall, or bind-up event is sensed the electronic
brake engages with maximum force to quickly stop the
wheel, reduce the movement of the grinder, and shut the
grinder off. The switch needs to be cycled (turned on and off)
to restart the tool.
Constant Clutch
When overloaded or stalled the motor torque is reduced
to allow the user to maintain control of the tool. If load
is reduced the torque and RPM will increase. If the tool is
stalled for an extended amount of time it will shut-off and
require the switch to cycle to restart. This feature mimics a
mechanical clutch without the associated component wear.
14
Electronic Soft Start
12
This feature limits the initial start up momentum, allowing
12
the speed to build up gradually over a 1 second period.
...................... Class II Construction
n o ....................... no load speed
n ......................... rated speed
PSI....................... pounds per square inch
(grounded) ...................... earthing terminal
..................... safety alert symbol
..................... visible radiation–
..................... wear respiratory
..................... wear eye protection
..................... wear hearing
..................... read all documentation
..................... do not expose to rain
..................... do not use the
current
ENGlIsh
(double insulated)
do not stare into
the light
protection
protection
guard for
cut-off operations
35