Roller Centro S1 Notice D'utilisation page 23

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ROLLER'S Centro S3 and Centro SR approx. 250 mm, for ROLLER'S Bohrständer
T with Centro S2/3,5 approx. 290 mm from the centre of the core hole. Set plug
hole Ø 20 mm, drilling depth approx. 85 mm. Clean the bore hole, and push
the expansion anchor (28) with knurled threaded rod (25) into the hole. Screw
the knurled threaded rod (25) fully home and tighten it by holding a tool such
as a screw driver in the transverse hole of the rod. Turn the four adjustment
screws (5) on the drill upright until they no longer protrude from the sole plate.
Position the drill upright with slot (7) on the knurled threaded rod, while observing
the desired position of the core-drilling operation. Fit the washer (26) to the
knurled threaded rod and use an SW 30 wrench to secure the fast-tightening
nut (27). Turn all four adjustment screws (5) with the SW 19 wrench to compen-
sate for irregularities in the ground surface. Take care to ensure that the
locknuts do not prevent movement of the adjustment screws. Tighten the
locknuts as required. Using the 4 adjustment screws (5) and the bull's eye level
((56) accessory Art. No. 182010), the drill stand can be aligned to drill a right-
angled hole.
The expansion anchor can be removed after completion of the core-drilling
operation for reuse elsewhere. To do so, turn the knurled threaded 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 Fastening in masonry with quick clamping set 500
In porous masonry it is to be expected that plug fastening of the drill stand will
not be successful. In this case we recommend drilling completely through the
wall with a drill diameter of 18 mm and fastening the drill stand with the quick
clamping set 500 ((63) accessory art. no. 183607).
3.3.4 Securing with vacuum suction
The drill stand can be held by a vacuum for core drilling in parts with a smooth
surface (e.g. tiles, marble) in which no dowel pin fastening is possible. The
vacuum fastening (accessory art. no. 183603) can only be used for ROLLER'S
Bohrständer T. The suitability of the parts for vacuum fastening must be checked.
Coated, laminated surfaces or tiles can come off. The vacuum fastening may
only be used on regular or smooth surfaces and never on irregular, rough
surfaces because otherwise the vacuum fastening can come loose and cause
injuries. 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). Connect vacuum pump ((67) accessory art. no. 183670) to
hose connection (41) and suck drill stand tightly to the base. Check the vacuum
pressure constantly during drilling (pressure gauge). Observe the operating
instructions of the vacuum pump used. Drill with low thrust pressure. The
vacuum pump should be left switched on during drilling to prevent the drill stand
accidentally coming loose.
3.3.5 Securing with a quick-action upright
The ROLLER'S Bohrständer T also offers the possibility of securing the drill
upright between the fl oor and ceiling, or between two walls. This is done, for
example, by placing a conventional quick-action upright or a 1¼" steel pipe
between the grip head (29) of the drill upright 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, ROLLER'S Centro S3 and ROLLER'S Centro SR
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 fi llister 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.
Use dust extraction and a suitable safety vacuum cleaner/dust extractor, e.g.
ROLLER'S Protector M (see 2.4.2.). The diamond core drilling crown could be
damaged by overheating if the dust produced by dry drilling is not sucked off.
There is also a risk of injury when the drilling dust compressed in the gap blocks
the diamond core drilling crown. If you have to work without dust extraction in
fi ne-pored material, the diamond core drilling crown should be pulled back as
often as possible and pushed forward again with a slight swing so that the
drilling dust is pushed out of the drilling gap. Suitable safety equipment, e.g.
respirator, disposable overalls, must be used. Observe the national regulations.
Make sure that the suction hose of the safety vacuum cleaner/dust extractor
does not kink and impair the dust extraction. Also make sure that no fragments
of stone or other objects jam in the diamond core drilling crown, the suction
rotor ((46 accessory art. no. 180160) and/or the suction hose. Empty the dust accessory art. no. 180160 accessory art. no. 180160) and/or the suction hose. Empty the dust
bag of the safety vacuum cleaner/dust extractor early and clean/renew the fi lter
regularly. Observe the operating instructions of the safety vacuum cleaner/dust
extractor.
Switch on the drive unit with safety inching switch (21). Lock the safety inching
switch in the pressed state by pushing the orange button forward (Centro S1
and Centro S3). In Centro SR the knob next to the safety inching switch (21)
must be pressed to lock the switch (21) when pressed. Slowly advance the
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diamond core drilling crown with the feed lever (4), and carefully tap the drill
hole. Once the diamond core drilling crown has engaged all-round, the feed
rate can be increased. If the drive unit is stopped due to excessive feed pres-
sure, 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 repea ted 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 core drilling crown freed manually (see 5.).
WARNING
Pull out the mains plug!
NOTICE
Always wet drilling for steel-reinforced concrete!
ROLLER'S Centro S2/3,5
Loosen the two screws (52) on the fl ange of the ROLLER'S Bohrständer T,
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 the drive unit with the rocker switch (21a). Lock the switch
in the pressed state by pushing the orange button forward. Slowly advance the
diamond core drilling crown with the feed lever (4), and care fully tap the drill
hole. Once the diamond core drilling crown has engaged all-round, the feed
rate can be increased. If the drive unit is stopped due to excessive feed pres-
sure, 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 repea ted 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
core drilling crown freed manually (see 5.).
WARNING
Pull out the mains plug!
NOTICE
Always wet drilling for steel-reinforced concrete!
3.5 Wet-boring with drill upright
ROLLER'S Centro S1, ROLLER'S Centro S3 and ROLLER'S Centro SR
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 fi llister 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.). Switch on the drive unit with safety inching
switch (21). Lock the safety inching switch in the pressed state by pushing the
orange button forward (Centro S1 and Centro S3). In Centro SR the knob next
to the safety inching switch (21) must be pressed to lock the switch (21) when
pressed. 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 diamond core drilling crown has engaged all-round, the feed rate can be
increased. Adjust the water pressure to a point where there is a moderate, but
constant, fl ow for water from the bore hole. Insuffi cient water pressure (where
the waste material fl ows out of the bore hole as thick sludge rather than liquid)
is as bad for the working effi ciency and service life of the diamond core drilling
crown as is excessive water pressure, which causes completely clear water to
fl ow out. Suck up the drilling water preferably with a suitable dry and wet vacuum
cleaner, e.g. ROLLER'S Protector L or ROLLER'S Protector M.
WARNING
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 remains stopped despite the reduction in feed
pressure, the drive unit must be shut down and the diamond core drilling crown
freed manually (see 5.).
WARNING
Pull out the mains plug!
ROLLER'S Centro S2/3,5
Fix the ROLLER'S Bohrständer T in one of the ways described in 3.3. Loosen
the two screws (52) on the fl ange of the ROLLER'S Bohrständer T, insert
ROLLER'S Centro S2/3.5 in the guide (53). Hold the drive unit and tighten the
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