Residual Risks; Electrical Safety - DeWalt DW721KN Originalanweisungen

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11 . Do not abuse the cord.
- Never yank the cord to disconnect if from the socket. Keep the cord away from heat,
oil and sharp edges. Never carry the tool by its own cord.
12 . Secure work.
- Where possible use clamps or a vice to hold the work. It is safer than using your hand and
it frees both hands to operate the tool.
13 . Do not overreach.
- Keep proper footing and balance at all times.
14 . Maintain tools with care.
- Keep cutting tools sharp and clean for better and safer performance. Follow instructions
for lubricating and changing accessories. Inspect tools periodically and if damaged have
them repaired by an authorised service facility. Keep handles dry, clean and free from oil
and grease.
15 . Disconnect tools.
- When not in use, before servicing and when changing accessories such as blades, bits and
cutters, disconnect tool from the power supply.
16 . Remove adjusting keys and wrenches.
- Form the habit of checking to see that adjusting keys and wrenches are removed from the
tool before operating the tool.
17 . Avoid unintentional starting.
- Do not carry the tool with a finger on the switch. Be sure that the tool is in the "off"
position before plugging in.
18 . Use outdoor extension leads.
- Before use, inspect the extension cable and replace if damaged. When the tool is used
outdoors, use only extension cords intended for outdoor use and marked accordingly.
19 . Stay alert.
- Watch what you are doing. Use common sense. Do not operate the tool when you are
tired or under the influence of drugs or alcohol.
20 . Check for damaged parts.
- Before use, carefully check the tool and mains cable to determine that it will operate
properly and perform its intended 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 damaged should be properly repaired or replaced
by an authorized service centre unless otherwise indicated in this instruction manual.
Have any damaged or defective switches replaced by an authorized service centre. Do not
use the tool if the switch does not turn it on and off. Never attempt any repairs yourself.

WARNING: The use of any accessory or attachment or performance of any operation
with this tool other than those recommended in this instruction manual may present a
risk of personal injury.
21 . Have your tool repaired by a qualified person.
- This electric tool complies relevant safety rules. Repairs should only be carried out by
qualified persons using original spare parts; otherwise this may result in considerable
danger to the user.
Additional Safety Rules for Radial Arm Saws
• Protect the electric power supply with a suitable fuse or circuit breaker.
• Keep the bearing tracks in the arm and the bearings on the roller head assembly clean and
free from grease.
• Before turning the saw on, make sure that the fence is in the correct position. The blade should
not contact the material until the saw is pulled by the handle.
• Always set the finger guard so that it passes above the fixed fence or is 3 mm above the
surface of the material being cut, whichever is higher.
• Regularly check the adjustments for accuracy and adjust as required.
• Make sure that the blade rotates in the correct direction and that the teeth are pointing
towards the fence.
• Make sure all clamp handles are tight before starting operation.
• Never run the machine without all guards in place.
• When not in use, protect the saw blade completely using the blade guard.
• When not in use, when changing blades or carrying out maintenance, disconnect the
machine from the power supply.
• Always use correct, sharpened saw blades manufactured in accordance with EN847-1 and
with a rake angle of +/– 5 mm.
• Never use saw blades where the maximum marked speed is lower than the revolution speed
of the spindle.
• Do not use HSS (high-speed steel) saw blade.
• The recommended blade diameter is stated in the technical data.
• Do not wedge anything against the motor fan to hold the motor shaft.
• Before use, ensure the guards, brake, automatic return and locking devices are functioning
properly. Do not use the machine if these devices are defective.
• When sawing a round workpiece ALWAYS use suitable jig or prism to prevent rotation of
the workpiece.
• Do not force the cutting action. (Stalling or partial stalling of the motor can cause major
damage.) Allow the motor to reach full speed before cutting.
• Do not lift the machine by its worktable.
• Do not cut ferrous metals, non-ferrous metals or masonry.
• Do not apply lubricants to the blade when it is running.
• Do not place either hand in the blade area when the saw is connected to the power source.
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• Do not reach around behind the saw blade when in use.
• Do not place hands closer than 150 mm from the saw blade while cutting.
• Do not use damaged or cracked saw blades.
• Replace the fence if damaged and/or no longer offers proper support. The fence needs to be
replaced periodically.
• ALWAYS ensure safe operation. The radial arm saws needs to be fixed to the floor with
diameter 8 mm bolts with a minimum length of 80 mm.

WARNING: When cutting round workpiece it is necessary to secure the workpiece against
rotation by using jig or holder.
• Do not use the machine in locations where the temperature may reach –5˚ or 40 ˚C. Suitable
temperature is 20 ˚C.
• Operators shall be instructed on factors influencing exposure to noise (e.g. use of saw blade
designed to reduce the emitted noise and machine maintenance). Report faults in the
machine, including guards or saw blade, as soon as they are discovered. Ensure the operator
is adequately trained in use, adjustment and operation of the machine.
• Connect the machine to a dust collection device when sawing wood. Always consider factors
which influence exposure of dust such as:
- Type of material to be machined (chip board produces more dust than wood).
- Correct adjustment of saw blade.
- Ensure that the local extraction as well as hoods, baffles and chutes are properly adjusted.
• Always wear working gloves when servicing the machine, handling rough workpieces or
changing the saw blade.
• If a voltage failure occurs under idle condition, release the handle immediately ensuring the
saw head moves automatically back to its rest position.

WARNING: Defect electrical wiring needs to be replaced immediately.

WARNING: To reduce the risk of injury, turn unit off and disconnect machine from
power source before installing and removing accessories, before adjusting or changing
set-ups or when making repairs. Be sure the switch is in the OFF position An accidental
start-up can cause injury.
• Report the failure and mark the machine in suitable form to prevent other people from using
the defective machine.
• When the saw blade is blocked due to abnormal feed force during cutting, turn the machine
off and disconnect it from power supply. Remove the workpiece and ensure that the saw
blade runs free. Turn the machine on and start new cutting operation with reduced feed force.

WARNING: We recommend the use of a residual current device with a residual current
rating of 30mA or less.

Residual Risks

The following risks are inherent to the use of radial arm saws:
In spite of the application of the relevant safety regulations and the implementation of safety
devices, certain residual risks cannot be avoided.
These are:
• Injuries caused by touching rotating parts.
• Impairment of hearing.
• Risk of accidents caused by the uncovered parts of the rotating saw blade.
• Risk of injury when changing the blade.
• Risk of squeezing fingers when opening the guards.
• Health hazards caused by breathing dust developed when sawing wood, especially oak,
beech and MDF.

Electrical Safety

The electric motor has been designed for one voltage only. Always check that the power
supply corresponds to the voltage on the rating plate.
If the supply cord is damaged, it must be replaced only by D
service organisation.
Mains Plug Replacement
(U.K. & Ireland Only) Single-phase only
If a new mains plug needs to be fitted:
• Safely dispose of the old plug.
• Connect the brown lead to the live terminal in the plug.
• Connect the blue lead to the neutral terminal.
• Connect the green/yellow lead to the earth terminal.

WARNING: Follow the fitting instructions supplied with good quality plugs.
Recommended fuse: 13 A.

WARNING: This product must be earthed. Always check that the power supply
corresponds to the voltage on the rating plate.
Contact a qualified electrician if a new CEE 16 A industrial plug needs to be fitted.
Using an Extension Cable
An extension cord should not be used unless absolutely necessary. Use an approved extension
cable suitable for the power input of your machine (see Technical Data). When using a cable
reel, always unwind the cable completely. The maximum cable length is 30 m.
single-phase machines
Use an approved 3-core extension cable suitable for the power input of this machine (see
Technical Data). The minimum conductor size is 1.5 mm².
WALT or an authorised
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