Roller Centro S 1 Instructions D'emploi page 18

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rod back by about 10 mm. A light tap on the knurled threaded rod will
release the pin of the expansion anchor, allowing it to be removed.
3.3.3. Securing to masonry with a threaded rod
When drilling in porous masonry, note that it is not sufficient to secure
the drill upright with plugs. It is recommendable in these cases to drill
right through the masonry and secure the drill upright with a threaded
rod (e.g. M12), secured from the other side by a washer and nut.
3.3.4. Securing with vacuum suction
When carrying out core-drilling operations on items with shiny surfaces
(e.g. tiles or marble) that do not permit securing with plugs, the drill
upright can be secured by vacuum suction. Check the suitability of the
surface for vacuum suction. This method of securing is suitable for the
ROLLER'S drill upright D and D 300. The required drill-upright compo-
nents are supplied with the unit. Proceed as follows:
Place the sealing ring (43) into the channel on the underside of the sole
plate (6). Close off the slot (7) in the sole plate (6) with the cover plate
with hose connection (42). Attach a conventional vacuum pump to the
hose connection (41), and secure the underside of the drill upright by
suction. Check the vacuum pressure constantly during drilling (pressure
gauge). Observe the operating instructions supplied with the vacuum
pump. Operate the drill at low feed pressure.
3.3.5. Securing with a quick-action upright
The ROLLER'S drill upright D and D 300 also offers the possibility of
securing the drill upright between the floor and ceiling, or between two
walls. This is done, for example, by placing a conventional quick-action
1
upright or a 1 / " steel pipe between the grip head (29) of the drill upright
4
and the ceiling/wall, and tightening it by holding a tool such as a screw-
driver in the transverse hole. Tighten the locknut (30).
Note that the quick-action upright or steel pipe must be aligned with the
boring trestle, and that the threaded spindle (33) should be screwed by
at least 20 mm into the thread of the boring trestle, and into the thread
of the grip head, in order to guarantee a stable support. Use a piece of
wood or metal to distribute the pressure force of the quick-action upright
evenly on the ceiling or wall.
3.4. Dry-boring with drill upright
ROLLER'S Centro S1 and ROLLER'S Centro S3
Secure the drill upright using one of the methods described in 3.3. Insert
the drill collar (13) of the drive unit into the mounting in the clamping
angle (10), and tighten the fillister head screw(s) (8) with an SW 6 hexa-
gon socket head wrench. Screw the selected diamond core drilling crown
onto the drive spindle (11) of the drive unit, and lightly hand-tighten.
There is no need to tighten it with a wrench.
Using the dust-extraction system (see 2.4.2.). If the dust produced by
dry boring is not removed, the diamond core drilling crown may overheat
and suffer damage. There is also a danger of the compressed drilling
dust in the gap causing the diamond core drilling crown to become
blocked.
Activate the drive unit at the switch (21). Push in the switch and press
the orange button forward to lock it. Slowly advance the diamond core
drilling crown with the feed lever (4), and carefully tap the drill hole. Once
the annular bit has engaged all-round, the feed rate can be increased.
If the drive unit is stopped due to excessive feed pressure, or becomes
blocked as a result of resistance in the drilling gap, the multi-function
electronic system reduces the motor current – and thus the turning speed
of the drive unit – to a minimum. The drive unit does not shut down how-
ever. As the feed pressure is reduced, the turning speed of the drive unit
is increased once more. This procedure, even if it is repeated several
times in succession, prevents damage to the drive unit. If the motor
remains stopped despite the reduction in feed pressure, the drive unit
must be shut down and the diamond-tipped annular bit freed manually
(see 5.). Pull out the mains plug!
ROLLER'S Centro S2/3,5
Loosen the two screws (52) on the flange of the ROLLER'S drill upright
D 300, insert ROLLER'S Centro S2/3,5 in the guide (53). Hold the drive
machine and tighten the screws (52). Tighten the locking nut. Screw the
selected diamond core drill crown to the drive spindle (11) of the drive
machine and tighten by hand with a slight swing. There is no need to
use an open-ended wrench for tightening. Switch on drive machine with
switch (21). Push in the switch and press the orange button forward to
lock it. Slowly advance the diamond core drilling crown with the feed
lever (4), and carefully tap the drill hole. Once the annular bit has en-
gaged all-round, the feed rate can be increased. If the drive unit is stop-
ped due to excessive feed pressure, or becomes blocked as a result of
resistance in the drilling gap, the multi-function electronic system redu-
ces the motor current – and thus the turning speed of the drive unit – to
a minimum. The drive unit does not shut down however. As the feed
pressure is reduced, the turning speed of the drive unit is increased once
more. This procedure, even if it is repeated several times in succession,
prevents damage to the drive unit. If the motor remains stopped despite
the reduction in feed pressure, the drive unit must be shut down and the
diamond-tipped annular bit freed manually (see 5.). Pull out the mains
plug!
Important: Always wet drilling for steel-reinforced concrete!
3.5. Wet-boring with drill upright
ROLLER'S Centro S1 und ROLLER'S Centro S3
Secure the drill upright using one of the methods described in 3.3. Insert
the drill collar (13) of the drive unit into the mounting in the clamping
angle (10), and tighten the fillister head screw(s) (8) with an SW 6 hexa-
gon socket head wrench. Screw the selected diamond core drilling crown
onto the drive spindle (11) of the drive unit, and lightly hand-tighten.
There is no need to tighten it with a wrench.
Connect the water supply (see 2.5.). Activate the drive unit at the switch
(21). Push in the switch and press the orange button forward to lock it.
Slowly advance the diamond core drilling crown with the feed lever, and
– with the water supply at a minimum – carefully tap the drill hole. Once
the annular bit has engaged all-round, the feed rate can be increased.
Adjust the water pressure to a point where there is a moderate, but
constant, flow for water from the bore hole. Insufficient water pressure
(where the waste material flows out of the bore hole as thick sludge
rather than liquid) is as bad for the working efficiency and service life of
the diamond core drilling crown as is excessive water pressure, which
causes completely clear water to flow out. Ensure that no water is allowed
to get into the drive unit motor during operation. DANGER OF FATAL
ACCIDENT!
If the drive unit is stopped due to excessive feed pressure, or becomes
blocked as a result of resistance in the drilling gap, the multi-function elec-
tronic system reduces the motor current – and thus the turning speed of
the drive unit – to a minimum. The drive unit does not shut down how-
ever. As the feed pressure is reduced, the turning speed of the drive unit
is increased once more. This procedure, even if it is repeated several
times in succession, prevents damage to the drive unit. If the motor re-
mains stopped despite the reduction in feed pressure, the drive unit must
be shut down and the diamond-tipped annular bit freed manually (see 5.).
Pull out the mains plug!
ROLLER'S Centro S2/3,5
Loosen the two screws (52) on the flange of the ROLLER'S drill upright
D 300, insert ROLLER'S Centro S2/3,5 in the guide (53). Hold the drive
machine and tighten the screws (52). Tighten the locking nut. Screw the
selected diamond core drill crown to the drive spindle (11) of the drive
machine and tighten by hand with a slight swing. There is no need to
use an open-ended wrench for tightening. Switch on drive machine with
switch (21). Push in the switch and press the orange button forward to
lock it. Slowly advance the diamond core drilling crown with the feed
lever (4), and carefully tap the drill hole. Once the annular bit has en-
gaged all-round, the feed rate can be increased. If the drive unit is stop-
ped due to excessive feed pressure, or becomes blocked as a result of
resistance in the drilling gap, the multi-function electronic system redu-
ces the motor current – and thus the turning speed of the drive unit – to
a minimum. The drive unit does not shut down however. As the feed
pressure is reduced, the turning speed of the drive unit is increased once
more. This procedure, even if it is repeated several times in succession,
prevents damage to the drive unit. If the motor remains stopped despite
the reduction in feed pressure, the drive unit must be shut down and the
diamond-tipped annular bit freed manually (see 5.). Pull out the mains
plug!
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