Manual DeWalt DHS790AT2 Mitre Saw
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Manual
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English
2
i) Cut only one workpiece at a time. Stacked multiple workpieces cannot be adequately
clamped or braced and may bind on the blade or shift during cutting.
j) Ensure the miter saw is mounted or placed on a level, firm work surface before
use. A level and firm work surface reduces the risk of the miter saw becoming unstable.
k) Plan your work. Every time you change the bevel or miter angle setting, make
sure the fence will not interfere with the blade or the guarding system. Without
turning the tool “ON” and with no workpiece on the table, move the saw blade through
a complete simulated cut to assure there will be no interference or danger of cutting the
fence.
l) Provide adequate support such as table extensions, saw horses, etc. for a
workpiece that is wider or longer than the table top. Workpieces longer or wider than
the miter saw table can tip if not securely supported. If the cut-off piece or workpiece tips,
it can lift the lower guard or be thrown by the spinning blade.
m) Do not use another person as a substitute for a table extension or as additional
support. Unstable support for the workpiece can cause the blade to bind or the workpiece
to shift during the cutting operation pulling you and the helper into the spinning blade.
n) The cut-off piece must not be jammed or pressed by any means against the
spinning saw blade. If confined, i.e. using length stops, the cut-off piece could get
wedged against the blade and thrown violently.
o) Always use a clamp or a fixture designed to properly support round material such
as rods or tubing. Rods have a tendency to roll while being cut, causing the blade to
“bite” and pull the work with your hand into the blade.
p) Let the blade reach full speed before contacting the workpiece. This will reduce the
risk of the workpiece being thrown.
q) If the workpiece or blade becomes jammed, turn the miter saw off. Wait for
all moving parts to stop and disconnect the plug from the power source and/
or remove the battery pack. Then work to free the jammed material. Continued
sawing with a jammed workpiece could cause loss of control or damage to the miter saw.
r) After finishing the cut, release the switch, hold the saw head down and wait for
the blade to stop before removing the cut-off piece. Reaching with your hand near
the coasting blade is dangerous.
s) Hold the handle firmly when making an incomplete cut or when releasing the
switch before the saw head is completely in the down position. The braking action
of the saw may cause the saw head to be suddenly pulled downward, causing a risk of
injury.
Additional Safety Rules for Miter Saws
WARNING: Do not insert the battery into the unit or connect to a power source until
complete instructions are read and understood.
• DO NOT OPERATE THIS MACHINE until it is completely assembled and installed
according to the instructions. A machine incorrectly assembled can cause serious injury.
• OBTAIN ADVICE from your supervisor, instructor, or another qualified person if you are
not thoroughly familiar with the operation of this machine. Knowledge is safety.
• FOLLOW ALL WIRING CODES and recommended electrical connections to prevent
shock or electrocution. Protect electric supply line with at least a 15 ampere time-delay
fuse or a circuit breaker.
• MAKE CERTAIN the blade rotates in the correct direction. The teeth on the blade should
point in the direction of rotation as marked on the saw.
• TIGHTEN ALL CLAMP HANDLES, knobs and levers prior to operation. Loose clamps
can cause parts or the workpiece to be thrown at high speeds.
• BE SURE all blade and blade clamps are clean, recessed sides of blade clamps are
against blade and arbor screw is tightened securely. Loose or improper blade clamping
may result in damage to the saw and possible personal injury.
c) When battery pack is not in use, keep it away from other metal objects like paper
clips, coins, keys, nails, screws or other small metal objects that can make a
connection from one terminal to another. Shorting the battery terminals together may
cause burns or a fire.
d) Under abusive conditions, liquid may be ejected from the battery; avoid contact. If
contact accidentally occurs, flush with water. If liquid contacts eyes, additionally
seek medical help. Liquid ejected from the battery may cause irritation or burns.
e) Do not use a battery pack or tool that is damaged or modified. Damaged or
modified batteries may exhibit unpredictable behavior resulting in fire, explosion or risk of
injury.
f) Do not expose a battery pack or tool to fire or excessive temperature. Exposure to
fire or temperature above 130 °C may cause explosion.
g) Follow all charging instructions and do not charge the battery pack or tool
outside the temperature range specified in the instructions. Charging improperly or
at temperatures outside the specified range may damage the battery and increase the risk
of fire.
6) SERVICE
a) Have your power tool serviced by a qualified repair person using only identical
replacement parts. This will ensure that the safety of the power tool is maintained.
b) Never service damaged battery packs. Service of battery packs should only be
performed by the manufacturer or authorized service providers.
Safety Instructions for Miter Saws
a) Miter saws are intended to cut wood or wood-like products, they cannot be
used with abrasive cut-off wheels for cutting ferrous material such as bars, rods,
studs, etc. Abrasive dust causes moving parts such as the lower guard to jam. Sparks
from abrasive cutting will burn the lower guard, the kerf insert and other plastic parts.
b) Use clamps to support the workpiece whenever possible. If supporting the
workpiece by hand, you must always keep your hand at least 6" (152 mm) from
either side of the saw blade. Do not use this saw to cut pieces that are too small
to be securely clamped or held by hand. If your hand is placed too close to the saw
blade, there is an increased risk of injury from blade contact.
c) The workpiece must be stationary and clamped or held against both the fence
and the table. Do not feed the workpiece into the blade or cut “freehand” in any
way. Unrestrained or moving workpieces could be thrown at high speeds, causing injury.
d) Push the saw through the workpiece. Do not pull the saw through the workpiece.
To make a cut, raise the saw head and pull it out over the workpiece without
cutting, start the motor, press the saw head down and push the saw through the
workpiece. Cutting on the pull stroke is likely to cause the saw blade to climb on top of
the workpiece and violently throw the blade assembly towards the operator.
e) Never cross your hand over the intended line of cutting either in front or behind
the saw blade. Supporting the workpiece “cross handed” i.e. holding the workpiece to
the right of the saw blade with your left hand or vice versa is very dangerous.
f) Do not reach behind the fence with either hand closer than 6" (152 mm) from
either side of the saw blade, to remove wood scraps, or for any other reason
while the blade is spinning. The proximity of the spinning saw blade to your hand may
not be obvious and you may be seriously injured.
g) Inspect your workpiece before cutting. If the workpiece is bowed or warped,
clamp it with the outside bowed face toward the fence. Always make certain that
there is no gap between the workpiece, fence and table along the line of the cut.
Bent or warped workpieces can twist or shift and may cause binding on the spinning saw
blade while cutting. There should be no nails or foreign objects in the workpiece.
h) Do not use the saw until the table is clear of all tools, wood scraps, etc., except
for the workpiece. Small debris or loose pieces of wood or other objects that contact
the revolving blade can be thrown with high speed.
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Specifications
| Brand | DeWalt |
| Model | DHS790AT2 |
| Category | Mitre Saws |
| File type | |
| File size | 26.54 MB |
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Frequently Asked Questions about DeWalt DHS790AT2 Mitre Saw
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Do I need to wear hearing protection when using a mitre saw? Verified
Yes you should. Although the amount of noise produced by a mitre saw can vary between brands and models, long term exposure to loud noise can cause permanent hearing damage. That is why it is a good idea to wear hearing protection.
This was helpful (14) Read moreCan I store power tools in a shed or garage? Verified
In general, you can store power tools in a shed or garage, even if it sometimes freezes there. However, it is better for the lifespan of the power tool to store it in a dry place without major temperature fluctuations. In a shed or garage, differences in temperature can cause condensation to form, which can cause rust. In addition, tools that run on batteries last shorter and do not charge as well at very low temperatures. To be sure how your power tool needs to be stored, always thoroughly read the user manual.
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