DeWalt DW721KN Traducido De Las Instrucciones Originales página 28

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WARNING: The table extensions and the fixed table top MUST be flush.
4. Insert 3 dowels into the small, left fence
(Fig. A, M).
5. Align the left fence dowels with the left side holes in the fixed table top and firmly press
together (Fig. N).
6. Repeat with the right fence.
7. Align the back, left table strip 20 with the left fence dowels and firmly press together
(Fig. O). Tighten the table clamp 38 with socket wrench (Fig. P).
8. Insert a M8 x 25 screw and D8 washer into the back, left table strip and securely tighten
(Fig. Q, R).
9. Repeat for back right table strip.
Mounting Dust Shroud (Fig. S, T)
1. Fit the dust port in position back to the column base.
2. Insert 3 M8 x 16 screws and D8 washers into the dust port and base holes.
3. Tighten all with 3 M8 nuts using 13 mm socket wrench and open key spanner.
Mounting the Cable Support (Fig. U, V)
1. Remove the cross head screw 39 .
2. Mount the cable support 40 and refit the cross head screw.
3. Remove the cable clamps 41 located on the arm and reattach holding the cable in place.

WARNING: Allow for the arm movement in horizontal and vertical direction.
Mounting the Electronic Control Box (Fig. W)
Wired into the mains cable is the electronic control box
switch 26 , the braking device and the motor overload protector with automatic reset.
1. Remove the nuts from the screws 42
2. Hold the box against the rear of the table frame to the left of the column base and insert
the screws into the corresponding holes.
3. Replace the nuts onto the end of the screws and tighten them.
Mounting the Saw Blade (Fig. X–GG)

WARNING: To reduce the risk of injury, wear gloves when handling the saw blade.
1. Ensure that the arm position is at 0˚ and raise the arm
2. Place one 6 mm hex key into the motor spindle and the other 6 mm hex key on the blade
screw (Fig. Y), turn the blade screw clockwise to remove the blade screw
flange (Fig. Z).
44
3. Remove the blade from the spindle and fit the blade in the slot
teeth blade MUsT nOT come into contact the spindle (Fig. AA, BB).
4. Unlock the head and move the head forward until the blade can be removed from the
slot 45 . Place the new blade 46 into the slot
(locked) position assuring that the teeth of the blade does not come into contact with the
spindle (Fig. CC–EE).
5. Place the new blade onto the internal flange
spindle (Fig. FF). Place one 6 mm hex key into the motor spindle and the other 6 mm hex
key on the blade screw, tighten the blade screw and external flange (Fig. Y).
nOTE: Lift the lower guard and slowly turn the blade to make sure the blade moves freely
without any side to side movement.
6. The head is ready for cutting (Fig. GG).

WARNING: The teeth of a new blade are very sharp and can be dangerous.

WARNING: The direction of rotation is indicated by the arrow on the motor.

WARNING: Make sure that the washer of the arbour nut is against the outer flange.
Checking that the Arm is Parallel to the Table Top (Fig. A, HH)
1. Lower the blade until it only just touches the fixed table top
46
2. Release the mitre latch lever 11 and the mitre clamp lever
3. Extend the blade forward past the fence then swing arm so that the blade skims the table
top across its width.
4. Repeat this procedure with the blade in rear position and adjust the rear bolt if required.
Checking that the Blade is Perpendicular to the Table Top (Fig. A, II–KK)
1. Bring the arm 14 back to central position.
2. Place a steel square 48 against the blade body (Fig. II).
3. If adjustment is required, proceed as follows:
a. Remove the bevel pointer disk 50
b. Loosen all three hex screws that will be exposed in this way (Fig. KK).
c. Place a hex key in the motor arbour and tap until the blade is flat against the square.
4. Firmly tighten all fasteners.

WARNING: It is particularly important to tighten the central hex screw.
5. Replace the bevel pointer disk 50 aligning the pointer
Checking that the Crosscut Travel is Perpendicular to the Fence
(Fig. LL–PP)
1. Extend the blade in front of the fence (Fig. LL).
26
8 and 3 dowels into the larger right fence
27 containing the no-volt release
protruding out of the rear of the box 27 .
14 to the upper position (Fig. X).
43 and external
45 of the table fence. The
45 and move the head slowly into the rest
47 . Place the external flange 44 on the
.
5
12 .
by loosening the two screws 51 (Fig. JJ).
49 at 0˚.
2. Place a square 48 on a piece of board and against the fence and just touching the blade
as shown.
9
3. Pull the blade towards you to check that the blade traverses parallel to the square.
4. If adjustment is required, proceed as follows:
a. With the mitre latch lever
as shown in Figure MM.
b. Loosen the locknuts 52
5. To adjust the arm 14 to the left, loosen the stud
and tighten the opposite stud (Fig. OO).
6. To adjust the arm 14 to the right, loosen the stud
and tighten the opposite stud.
7. Proceed in small steps and check the adjustment after each step with the
levers 11 , 12 engaged.

WARNING: Do not overtighten the studs.
8. Tighten the locknuts 52 .
9. Adjust the pointer 54 on the mitre scale
Blade Guard Assembly (Fig. QQ)
The blade guard is a multifunctional assembly which offers the following safety features:
- Front guard 3 and spring-held rear guard
- Dust extraction adapter
- Adjustable finger guard
Bevel Scale (Fig. RR)
Check that the bevel scale 24
If required, loosen the screws
Mitre Scale (Fig. PP)
Check that the mitre scale 55
Adjust the pointer 54 to register 0˚ using the screw
The arm has preset positions at 45˚ left and right and at 0˚.
OPERATION
Instructions for Use

WARNING: Always observe the safety instructions and applicable regulations.
• Ensure the material to be sawn is firmly secured in place.
• Apply only a gentle pressure to the tool and do not exert side pressure on the
saw blade.
• Avoid overloading.

WARNING:
• Install the appropriate saw blade. Do not use excessively worn blades. The maximum
rotation speed of the tool must not exceed that of the saw blade.
• Do not attempt to cut excessively small pieces.
• Allow the blade to cut freely. Do not force.
• Allow the motor to reach full speed before cutting.
• Make sure all locking knobs and clamp handles are tight.
• Never run the machine without the guards in place.
• Never lift the machine by the table top.
• Always check that there is a suitable slot in the table top.
• Always refer to Figure UU to check the fence position and type.
The attention of UK users is drawn to the "woodworking machines regulations 1974" and any
subsequent amendments.
Switching On and Off (Fig. A)
The on/off switch of your radial arm saw offers multiple advantages:
no-volt release function: should the power be shut off for some reason, the switch
-
has to be deliberately reactivated.
- Motor overload protection device: in case of motor overload, the power supply to
the motor will be cut off. If this happens, let the motor cool for 10 minutes and then
press the reset button.
Braking system: after switching off, the braking system will stop the saw blade within
-
10 seconds.
- The switch has hold-to-run functions only.
To switch the machine on, press the green actuator
released the machine stops automatically.
Making a Trial Cut (Fig. A)
1. With the mitre latch lever
positioned for a straight 0° cross-cut.
2. Lower the arm until the blade almost touches the table top.
3. Place the workpiece against the front of the fence.
4. Switch on and lower the arm to allow the blade to cut a shallow groove in the
table surface.
5. Pull the blade towards you so that it cuts a vertical slot in the wooden fence and through
the workpiece.
6. Return the blade back to rest position and switch off.
7. Check that the cut is a true 90° in all planes and adjust if required.
11 engaged in 0° position, release the mitre clamp lever
on each side of the arm 14 , shown in Figure NN.
53 on the right-hand side of the arm
53 on the left-hand side of the arm
55 so that it registers 0° (Fig. PP).
4 for full blade protection.
57 .
58 for use when cross-cutting.
reads 0˚ when positioned for a vertical cut.
51 and adjust the pointer to 0˚.
reads 0˚ when positioned for a vertical cut.
56 .
1 in the handle 2 . When the actuator is
11 engaged, lock the mitre clamp lever 12
12
so that the blade is