DeWalt DW898, DW898-220 Instruction Manual
INSTRUCTION MANUAL
GUIDE D'UTILISATION
MANUAL DE INSTRUCCIONES
DW898/DW898-220
14 Gauge Nibbler
Grignoteuse de calibre 14
Cortadora de lámina calibre 14
INSTRUCTIVO DE OPERACIÓN, CENTROS DE SERVICIO Y PÓLIZA
DE GARANTÍA. ADVERTENCIA: LÉASE ESTE INSTRUCTIVO ANTES
DE USAR EL PRODUCTO.
Questions? See us in the World Wide Web at www.dewalt.com
IMPORTANT SAFETY
INSTRUCTIONS (FOR ALL TOOLS)
WARNING: When using electric tools, basic safety precautions
should always be followed to reduce risk of fire, electric shock, and
personal injury, including the following:
READ ALL INSTRUCTIONS
Double Insulation
Double insulated tools are constructed throughout with two separate
layers of electrical insulation or one double thickness of insulation
between you and the tool’s electrical system.
Tools built with this insulation system are not intended to be
grounded. As a result, your tool is equipped with a two prong plug
which permits you to use extension cords without concern for
maintaining a ground connection.
NOTE: Double insulation does not take the place of normal safety
precautions when operating this tool. The insulation system is for
added protection against injury resulting from a possible electrical
insulation failure within the tool.
CAUTION: When servicing all tools, USE IDENTICAL REPLACE-
MENT PARTS. Repair or replace damaged cords.
Polarized Plug
Polarized plugs (one blade is wider than the other) are used on
equipment to reduce the risk of electric shock. When provided, this
plug will fit into a polarized outlet only one way. If the plug does not
fit fully into your outlet, reverse the plug. If it still does not fit, contact
a qualified electrician to install a proper polarized outlet. Do not
modify or change this plug in any way.
For All Tools:
• KEEP WORK AREA CLEAN. Cluttered areas and benches invite
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IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT THIS
OR ANY D
EWALT TOOL, CALL US TOLL FREE AT:
1-800-4-DEWALT (1-800-433-9258)
DW898/DW898-220 Volt
14-Gauge Nibbler
PADDLE SWITCH
SWITCH
LOCK
BUTTON
HOUSING
HEAD
COVER
RING
DIE
PUNCH
SET SCREW
injuries.
• CONSIDER WORK AREA ENVIRONMENT. Don’t expose power
tools to rain. Don’t use power tools in damp or wet locations. Keep
work area well lit.
• GUARD AGAINST ELECTRIC SHOCK. Prevent body contact
with grounded surfaces; for example, pipes, radiators, ranges,
and refrigerator enclosures.
• KEEP CHILDREN AWAY. All visitors should be kept away from
work area. Do not let visitors contact tool or extension cord.
• STORE IDLE TOOLS. When not in use, tools should be stored in
dry, and high or locked-up place — out of reach of children.
• DON’T FORCE A TOOL. It will do the job better and safer at the
rate for which it was intended.
• USE RIGHT TOOL. Don’t force small tool or attachment to do the
job of a heavy duty tool. Don’t use tool for purpose not intended; for
example, don’t use circular saw for cutting tree limbs or logs.
• DRESS PROPERLY.
Do not wear loose clothing or jewelry. Contain
long hair. Keep your hair, clothing, and gloves away from moving parts.
Loose clothing, jewelry, or long hair can be caught in moving parts. Air
vents often cover moving parts and should also be avoided.
• USE SAFETY GLASSES. Also use face or dustmask if operation
is dusty.
• DON’T ABUSE CORD. Never carry tool by cord or yank it to
disconnect from receptacle. Keep cord from heat, oil, and sharp
edges.
• SECURE WORK. Use clamps or a vise to hold work. It’s safer than
using your hand and it frees both hands to operate tool.
• DON’T OVERREACH. Keep proper footing and balance at all
times.
• MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for
better and safe performance. Follow instructions for lubricating and
changing accessories. Inspect tool cords periodically and if
damaged have repaired by authorized service facility. Inspect
extension cords periodically and replace if damaged. Keep
handles dry, clean, and free from oil and grease.
• DISCONNECT OR LOCK OFF TOOLS when not in use, before
servicing, and when changing accessories, such as blades, bits,
cutters.
• REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of
checking to see that keys and adjusting wrenches are removed
from tool before turning it on.
• AVOID UNINTENTIONAL STARTING. Don’t carry plugged-in tool
with finger on the switch. Be sure the switch is off when plugging
in.
• EXTENSION CORDS. Make sure your extension cord is in good
condition. When using an extension cord, be sure to use one
heavy enough to carry the current your product will draw. An
undersized cord will cause a drop in line voltage resulting in loss
of power and overheating. The following table shows the correct
size to use depending on cord length and nameplate ampere
rating. If in doubt, use the next heavier gage. The smaller the gage
number, the heavier the cord.
Minimum Gage for Cord Sets
Volts Total Length of Cord in Feet
120V 0-25 26-50 51-100 101-150
240V 0-50 51-100 101-200 201-300
Ampere Rating
More Not more AWG
Than Than
0-6 18161614
6 - 10 18 16 14 12
10-1216161412
12 - 16 14 12 Not Recommended
• STAY ALERT. Watch what you are doing. Use common sense.
Do not operate tool when you are tired.
• OUTDOOR USE EXTENSION CORDS. When tool is used
outdoors, use only extension cords intended for use outdoors and
so marked.
• CHECK DAMAGED PARTS. Before further use of the tool, a
guard or other part that is damaged should be carefully checked
to determine that it will operate properly and perform its intended
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function. Check for alignment of moving parts, binding of moving
parts, breakage of parts, mounting, and any other conditions that
may affect its operation. A guard or other part that is defective
should be properly repaired or replaced by an authorized service
center unless otherwise indicated elsewhere in this instruction
manual. Have defective switches replaced by authorized service
center. Do not use tool if switch does not turn it on and off.
• DO NOT OPERATE portable electric tools near flammable liquids
or in gaseous or explosive atmospheres. Motors in these tools
normally spark, and the sparks might ignite fumes.
CAUTION: Wear appropriate personal hearing protection during
use. Under some conditions and duration of use, noise from this
product may contribute to hearing loss.
• CAUTION: When drilling or driving into walls, floors or wherever
live electrical wires may be encountered, DO NOT TOUCH ANY
METAL PARTS OF THE TOOLS! Hold the tool only by insulated
grasping surfaces to prevent electric shock if you drive into a live
wire.
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 (CCA).
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.
Wear protective clothing and wash exposed areas with soap
and water. Allowing dust to get into your mouth, eyes, or lay on the
skin may promote absorption of harmful chemicals.
SAVE THESE INSTRUCTIONS
FOR FUTURE USE
Operating Rules for Nibblers
1. Always wear safety glasses and protective gloves.
2. Wear safety shoes to protect your feet from sharp metal debris on
floor.
3. Cut material at or below rated capacity. Remember, material
thickness increases as gauge number decreases (14 gauge is
thicker than 16 gauge). 14 gauge thickness is .075” (1,9 mm); 16
gauge is .060” (1,5 mm).
4. Keep all screws tight. Periodically check them for loosening.
5. Unplug tool before making any adjustments.
6. Do not put anything into a motor housing opening.
7. Keep tool clean. Blow off any metal debris and dirt from tool.
8. Firmly secure the piece of metal to be cut to prevent movement
during cutting.
PADDLE SWITCH
To start the tool, depress the paddle switch. To turn the tool off,
release the paddle. The switch can be locked on be engaging the
lock button located near the rear of the tool while holding the paddle
depressed. Always be sure that the tool is not locked on before
plugging it in. To turn the tool off when it is locked on, squeeze and
release the paddle once.
Operation
TURN OFF TOOL AND DISCONNECT FROM POWER SUPPLY
BEFORE MAKING ANY ADJUSTMENTS. Always wear safety
glasses and protective gloves.
Lubricate surface of material with oil. The nibbler is designed to cut
flat and shallow corrugated metal.
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The tool is factory assembled with the punch oriented forward for
cutting flat and shallow corrugated material.
The head can be aligned in three positions: left, forward, and right
(See Figure 2). To rotate the head, loosen the set screw. Turn the
head in the desired direction. NOTE: Do not rotate the head in a
complete circle as this will change the punch engagement in the die.
Rotate the housing in the head and turn the set screw in until you feel
the set screw engage a recess in the shoe. Tighten the set screw
firmly. Periodically recheck this screw for tightness.
The nibbler head is designed to fit through a 3/4” (19mm) diameter
hole for starting a cut in the middle of the work. Nibbling can be done
in any direction from this hole. A punch width indicator is provided
on the front of the housing to allow users to follow a line closely
(Figure 3).
The bottom of the housing has a .51” (13mm) diameter template
guide to allow for use of templates. See Figures 2 and 3 for template
guide surface. The thickness of the template should be such that the
total thickness of the template and workpiece is 13/64” to 1/4” (5 to
6.5mm). The shape of the template must be .1” (2.5mm) away from
the shape to be nibbled. The tool should be guided so that the
outside diameter (.51” or 13mm) of the housing always rests on the
template.
CHANGING PUNCHES
Never cut with a blunt, dull punch. Punches can be sharpened until
they reach a length of 2.72” (69mm). Shorter punches are
unserviceable. To remove the punch, loosen the head set screw
about 4-5 turns (See Figure 2). Slide the housing from the head.
Unscrew the punch from the connecting rod bushing. Punch may be
resharpened carefully on a bench grinder with a fine grit wheel. Be
careful that the punch does not become shorter than the minimum
length. Punches shorter than this will not engage the die sufficiently
and must be replaced. The ground face must be square to the punch
axis. After grinding, carefully stone the ground edges to remove
burrs. Do not round over corners.
REASSEMBLY OF NIBBLER HEAD
Screw the punch fully into the connecting rod bushing. Slide the
housing over the end of the punch and into the head. Turn the
housing to desired cut orientation. Tighten set screw. Next, check
punch engagement.
CHECKING PUNCH ENGAGEMENT
Since the punch length is now changed, the punch engagement may
have to be adjusted. Check punch engagement by placing a flat
blade screwdriver in the cam shaft slot and turning the shaft (See
Figure 2). Punch should dip .020” to .06” (.5 to 1.15mm) into the die
at the full down stroke position. Too much punch dip into the die will
result in a loss of capacity (bottom of punch will not clear die enough
on up stroke.)
PUNCH ENGAGEMENT ADJUSTMENT
If the punch engagement should need adjustment, loosen the set
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HEAD
CAM
SHAFT
PUNCH
SET
SCREW
CARRIER
SHAFT
CONNECTING
ROD BUSHING
DIE
HEAD
PUNCH
COVER
RING
CAM
SHAFT
DIE
FIG 2
FIG 3
HOUSING
TEMPLATE
GUIDE
COVER RING
HOUSING
TEMPLATE
GUIDE
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screw and rotate shoe either clockwise (punch deeper into die) or
counterclockwise (punch out of die). Tighten set screw firmly. Turn
cam shaft with screwdriver in slot to check punch engagement
(moving punch fully down). Repeat as necessary.
DIE REPLACEMENT
If the die becomes dull, replace it. Replace old die by pushing the
cover ring up and out of the die groove. Knock out the retaining pin
under the cover ring with a drift punch. Pull die off the carrier shaft.
Install new die on carrier shaft. Align cross hole in die with groove in
carrier shaft. Install pin. Snap cover ring over die in groove provided.
Maintenance
DISCONNECT TOOL FROM POWER SUPPLY BEFORE PERFORMING ANY MAINTENANCE. Check that the punch and die are
sharp. If either is dull, sharpen or replace. Keep the tool clean. Blow
off periodically. Never use solvents or harsh chemicals for cleaning
non-metallic parts of the tool. Use a clean, dry rag only. Periodically
dip the shoe in oil. This is a precision tool. Use it carefully and store
it in a protected place.
Cleaning & Lubrication
Use only mild soap and damp cloth to clean the tool. Never let any
liquid get inside the tool; never immerse any part of the tool into a
liquid.
Self-lubricating bearings are used in the tool and periodic
relubrication is not required. In the unlikely event that service is ever
needed, service center addresses are packed with your tool.
Motor Brushes
Brush replacement should be performed by authorized service
centers or other qualified service organizations.
Important
To assure product SAFETY and RELIABILITY, repairs, maintenance
and adjustment (including brush inspection and replacement) should
be performed by authorized service centers or other qualified service
organizations, always using identical replacement parts.
Accessories
Recommended accessories for use with your tool are available at
extra cost from your local dealer or authorized service center. If you
need assistance in locating any accessory for your tool, contact:
DEWALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD
21286
CAUTION: The use of any other accessory not recommended for
use with this tool could be hazardous.
Full Warranty
DEWALT heavy duty industrial tools are warranted for one year from
date of purchase. We will repair, without charge, any defects due to
faulty materials or workmanship. For warranty repair information,
call 1-800-4-D
EWALT. This warranty does not apply to accessories or
damage caused where repairs have been made or attempted by
others. This warranty gives you specific legal rights and you may
have other rights which vary in certain states or provinces.
In addition to the warranty, D
EWALT tools are covered by our:
30 DAY NO RISK SATISFACTION GUARANTEE
If you are not completely satisfied with the performance of your
D
EWALT heavy duty industrial tool, simply return it to the participating
seller within 30 days for a full refund. Please return the complete unit,
transportation prepaid. Proof of purchase may be required.
FREE WARNING LABEL REPLACEMENT: If your warning labels
become illegible or are missing, call 1-800-4-DEWALT for a free
replacement.
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