DeWalt DW738 Traducido De Las Instrucciones Originales página 19

Unplug the tool when not in use, before changing any parts of the tools,
accessories or attachments and before servicing.
Check the direction of the blade.
Do not place your hands within this area
Carrying point.
Date Code Position
The date code, which also includes the year of manufacture, is printed into the housing.
Example:
Year of Manufacture
Description (Fig. A–C)

WARNING: Never modify the power tool or any part of it. Damage or personal injury
could result.
On/Off switch
1
Safety key
2
3 Blade guard
Table insert
4
Hinged cover
5
Blade tension adjuster
6
Blade centring adjuster
7
8 Cover retention bolts
Table tilt locking lever
9
10 Fence
Blade guard height adjuster
11
Upper blade guard/guide assembly
12
Motor location bolt
13
Blade speed adjuster (DW739)
14
15 Table
Intended Use
Your DW738 / DW739 band-saw has been designed for professional workshop application: It
performs straight, contour, mitre and bevel cuts on a wide range of materials such as wood,
plastics, ferrous and non-ferrous metals and leather.
The nominal band length is 2095 mm and a width between 3 and 16 mm.

WARNING: Do not use the machine for other purposes as described.
DO nOt use under wet conditions or in the presence of flammable liquids or gases.
These bandsaws are professional power tools.
DO nOt let children come into contact with the tool. Supervision is required when
inexperienced operators use this tool.
• Young children and the infirm. This appliance is not intended for use by young children
or infirm persons without supervision.
• This product is not intended for use by persons (including children) suffering from
diminished physical, sensory or mental abilities; lack of experience, knowledge or skills
unless they are supervised by a person responsible for their safety. Children should never
be left alone with this product.
ASSEMBLY AND ADJUSTMENTS

WARNING: To reduce the risk of serious personal injury, turn tool off and
disconnect tool from power source before making any adjustments or removing/
installing attachments or accessories. Be sure the trigger switch is in the OFF position.
An accidental start-up can cause injury.
The machine is fully assembled except for the table and rip fence.
Installing the Machine (Fig. A)
To ensure safe operation, the machine has always to be mounted to the workbench or to the
ground. Use diameter 8 mm bolts with 100 mm length.
1. Mark the position of the four mounting holes
the workbench.
2. Place the machine on the workbench and insert the proposed bolts through the mounting
holes into the workbench.
Mounting the Table (Fig. A, D1–D6)
1. Turn the table tilt locking lever ( 9 in Fig. A) counterclockwise approximately half a turn to
release the tilt segments ( 28 in Fig. D2).
2. Swing back the connecting plate
27
3. Place the table onto the segments 28
machine (Fig. D2).
4. Carefully guide the table along the saw blade and align the holes in the table with those
in the segments.
2019 XX XX
Mounting holes
16
Push stick locations
17
Fig. B
Rear blade support bearing
18
Locking grub screw for
19 18
Blade guide blocks 45°
20
Locking grub screw for
21 20
22 Blade guide blocks 90°
Locking grub screw for 22
23
Optional accessories (Fig. C1)
Legstand
24
Fig. C2
Mitre fence
25
Cut length gauge
26
provided in the base of the machine on
16
which covers the blade slot in the table (Fig. D1).
with the blade slot pointing to the front of the
5. Insert one hex bolt M8 x 20 with washer into the two front holes and fasten them
29
hand-tight (Fig. D3).
6. Tilt the table to a 45° angle.
7. Insert one hex bolt M8 x 20 29 with washer into the two rear holes (Fig. D4).
8. Tighten all four bolts using the box spanner.
9. Press the table insert into place (Fig. D5).
4
10. Swing the connecting plate 27 back into place (Fig. D1).
11. Completely raise the blade guard 3 by turning the height adjuster
12. Use a set square to check that the table is at a right angle to the saw blade when in the
horizontal position. If adjustment is needed, loosen the table tilt locking lever and adjust
the grub screw 30 as required (Fig. D6).
Mounting the Bandsaw Blade (Fig. A, B, D1, D5, E1–E4)

WARNING: The teeth of a new blade are very sharp and can be dangerous.
1. Unscrew the two cover retention bolts
(Fig. A).
2. Swing back the connecting plate 27 which covers the blade slot in the table (Fig. D1).
3. Remove the table insert 4 .
4. Guide the blade through the blade slot in the table. Make sure that the teeth point to the
front of the machine and downwards in the working area (Fig. E2)
5. Carefully insert the blade into the blade guard slot
(Fig. E3 & E4).
6. Position the blade between the guide blocks
7. Move the blade around the band wheels
upper band wheel by turning the blade tension adjuster
8. Mount the table insert 4 (Fig. D5).
9. Swing the connecting plate 27 back into place (Fig. D1).
10. Adjust the blade tension, the guide blocks and the support bearings as described below.

WARNING: Be aware the bandsaw blade shall be replaced in the described way only. Do
never fit other bandsaw blade dimensions as specified under Technical Data.
Adjusting the Blade Tension (Fig. F1)
The correct tension depends on the width of the blade used. Refer to the table on
the machine.
Adjust the blade tension using the blade tension adjuster
tension corresponding to the blade width.
Adjusting the Blade Position (Fig. A, F2, F3)
The blade must be centred on the rim of the band wheels.
1. Open the hinged cover as described above.
2. While rotating the upper band wheel with one hand, slightly rotate the blade centring
adjuster 7 with the other (Fig. A, F3).

WARNING: Do not touch the blade but rotate the upper band wheel with your finger on
one of the spokes.
Adjusting the Blade Guide Blocks and Rear Support Bearings
(Fig. B, G1–G3)
During the sawing operation, the blade is exposed to frontal and lateral forces. The rear
support bearings 18 are positioned 0.5 mm behind the blade to control the blade front-
to-back movement. The 45° and 90° guide blocks are positioned 0.1 mm from the blade to
control the lateral blade position.
1. Remove the table insert and tilt the table to 45°.
2. Slacken the grub screws 19 and position the rear support bearings
blade (Fig. G1).
3. Adjust the knurled knob to position the blade guide blocks just behind the blade teeth
34
(Fig. G1).
4. Position the rear support bearings 18
screws (Fig. G1).
19
5. Slacken the grub screws 21 and 23 and insert the blade guide blocks
holders (Fig. G1).
6. Set the guide blocks to a distance of approx. 0.1 mm from the blade.
7. Tighten the grub screws 21 and 23 (Fig. G1).
Changing Speed
DW738 (Fig. H1–H3)
Your DW738 bandsaw has two speeds. The low speed is obtained with the drive belt on the
small drive pulley 35 (Fig. H2). The high speed is obtained with the drive belt on the large
drive pulley 36 (Fig. H2). For speed rates, refer to the technical data.
1. Slacken the motor location bolt 13 and move the motor to relax the drive belt (Fig. H1).
2. Ease the drive belt from the wheel pulley and subsequently from the drive pulley
or 36 (Fig. H2, H3).
3. Reinstall the drive belt on the wheel pulley and the required drive pulley
4. Reposition the motor to obtain the correct drive belt tension and secure the motor
location bolt (Fig. H1).
13
11 clockwise (Fig. A).
with box spanner to open the hinged door
8
31 while turning it for 90°
and .
20 22
32 and 33 (Fig. E2) If necessary, lower the
6 (Fig. E2) counterclockwise.
6 until the scale indicates the
18 away from the
0.5 mm behind the blade and tighten the grub
20 and 22
35 or 36
EngLIsh
in the
35
.
17