DWT BM-1050 M Serie Manual Original página 18

Mounting / replacement of accessories
With long-term use the drill bit may be-
come very warm; use gloves to remove
it.
Gear rim chuck (see fig. 3)
• Release the cams grip with clamping wrench 8, then
rotate the quill of gear rim chuck 1 counter-clockwise
with your hand (see fig. 3) until the cams move apart
at the distance allowing an accessory to be mounted /
replaced�
• Mount / replace an accessory�
• Rotate the quill of gear rim chuck 1 clockwise with
your hand in order to lock the accessory mounted� Do
not allow the accessory to become distorted�
• Tighten the cams of gear rim chuck 1 with clamping
wrench 8 applying a similar torque to each of the three
openings on the side surface of the chuck�
Mounting / dismounting of the drill chuck (see
fig. 4-5)
• To mount the gear rim chuck 1, carry out the op-
erations in consecutive stages as it is shown in fig-
ure 4�
• To dismount the gear rim chuck 1, carry out the
operations in consecutive stages as it is shown in fig-
ure 5�
Attention: keep in mind that in the pro-
cess of mounting / dismounting of the
drill chuck the screw 11 has a left-hand
thread.
Initial operating
of the power tool
Always use the correct supply voltage: the power sup-
ply voltage must match the information quoted on the
power tool identification plate.
Switching the power
tool on / off
Short-term switching on / off
Rotation to the right
Press and hold the on / off switch 4 on the bottom (see
fig. 6.1), to switch off - release it.
Rotation to the left
Press and hold the on / off switch 4 on the top (see
fig. 6.2), to switch off - release it.
Long-term switching on / off
Rotation to the right
Switching on:
Press the on / off switch 4 on the bottom and lock it
in the position with locking button for on / off switch 5
(see fig. 6.1).
Switching off:
Push on / off switch 4 and release it�
Changing the rotational directions (see fig. 6)
Change the direction of rotation only
after a full stop of the motor, acting oth-
erwise may cause damage to the power
tool.
Rotation to the right (stirring, drilling) - press and
hold the on / off switch 4 on the bottom� Also on / off
switch 4 can be locked in this position by pressing with
lock-on button 5 (see fig. 6.1).
Rotation to the left (reverse stirring) - press and
hold the on / off switch 4 on the top (see fig. 6.2).
on the power tool operation
Stirring various substances (see fig. 7-8)
Do not process explosive substances
(for example, highly inflammable sol-
vents) and materials with ignition tem-
perature of lower than 21°С. Study the
manufacturer's instructions for such kind of mate-
rials carefully and stick to them.
• The selection of stirring paddle type depends on the
type of substances stirred� Use stirring paddles with
left-hand blade spinning for low-viscosity substances
(dispersed paints, lacquers, sealing compounds, liquid
cement solution)� Use stirring paddles with right-hand
blade spinning for high-viscosity substances (ready-
made plastering solution, concrete, putty, polymeric
resins) (see fig. 7).
• Always use additional handle 3, as it makes the
implementation of works more convenient and in-
creases the degree of control over the power tool�
• Fix the container with the mixture stirred carefully
during the work�
• Move the power tool upward, downward and in cir-
cular movements to stir the mixture in the best manner
in its whole volume (see fig. 8).
• After finishing the works, wash and wipe stirring
paddle�
Drilling (see fig. 9-10)
• Grease the drill bit regularly when drilling holes in
metals (except drilling non-ferrous metals and their al-
loys)�
• When drilling large diameter holes in metal, first drill
a hole with a smaller diameter and ream it till the nec-
essary diameter (see. fig. 9).
• In order to avoid splitting of the surface at an exit
point of a drill bit when drilling holes in wood, follow the
instructions shown in figure 9.
• In order to decrease dust production when drilling
holes in walls, take actions indicated in figure 10.
• When drilling holes in glazed ceramic tiles, in order
to improve the drill centering accuracy and to save the
English
18
Design features
of the power tool
Recommendations