Roller Bohrstander S2, Instruction Manual

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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 ROLLER’S universal diamond core drilling crown/ROLLER’S 

universal diamond core drilling crown LS 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 Protectored 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 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). To do this, push forward 

the switch-on lock and press the safety inching switch at the same time. Push 

the switch-on lock forward again to lock the safety inching switch (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. Hold the diamond core 

drilling crown by the insulated grip surfaces, move forward slowly with the feed 

lever (4) and start tapping carefully.  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 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 

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

WARNING

Protector out the mains plug!

NOTICE

NOTICE

Always wet drilling with ROLLER’S universal diamond core drilling crowns 

and ROLLER’S universal diamond core drilling crowns LS for steel-

reinforced concrete!

Always dry drilling with ROLLER’S dry diamond core drilling crowns LS 

with core drilling machines with micro-pulse technology. Suck off the 

resulting drilling dust with a suitable safety vacuum cleaner/dust extractor! 

Observe the national regulations.
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). Hold the diamond 

core drilling crown by the insulated grip surfaces, move forward slowly with the 

feed lever (4) and start tapping carefully.  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 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 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

WARNING

Protector out the mains plug!

NOTICE

NOTICE

Always wet drilling with ROLLER’S universal diamond core drilling crowns 

and ROLLER’S universal diamond core drilling crowns LS for steel-

reinforced concrete!

Always dry drilling with ROLLER’S dry diamond core drilling crowns LS 

with core drilling machines with micro-pulse technology. Suck off the 

resulting drilling dust with a suitable safety vacuum cleaner/dust extractor! 

Observe the national regulations.

ROLLER’S Centro DP

NOTICE

NOTICE

For dry drilling in concrete/steel-reinforced concrete with ROLLER’S Centro 

DP and the ROLLER’S dry diamond core drilling crowns LS, it is necessary to 

switch on the micro-pulse technology and use a suitable safety vacuum cleaner/

dust extractor of dust class M, e.g. ROLLER’S Protector M, for dust extraction. 

For drilling in masonry and other materials, the micro-pulse technology can be 

switched off and a suitable safety vacuum cleaner/dust extractor, e.g. ROLLER’S 

Protector M, must be used. Observe the national regulations.

Fix the drill stand in one of the ways described in 3.3. N.B.: The vacuum fastening 

is not approved for drilling with ROLLER’S Centro DP. 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 a size 6 Allen key. 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 an open-ended wrench. Switch on the 

micro-pulse technology. To do this, turn the micro-pulse technology adjusting 

ring (Fig. 10 (69)) to the detent position so that the red markings are in line. 

When drilling in masonry and other materials, the micro-pulse technology can 

be switched off by turning the micro-pulse technology adjusting ring (69) to the 

detent position so that the red markings are not in line.

Connect a suitable safety vacuum cleaner/dust extractor, e.g. ROLLER’S 

Protector M, to ROLLER’S Centro DP (see 2.4.2.). If the dust produced by dry 

drilling is not removed, the diamond core drilling crown may overheat and suffer 

damage. There is also a risk of injury when the drilling dust compressed in the 

gap blocks the diamond core drilling crown 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 loosened 

lumps of rock or other objects jam in the diamond core drilling crown, the drive 

unit’s suction rotor 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). To do this, push forward 

the switch-on lock and press the safety inching switch at the same time. Push 

the switch-on lock forward again to lock the safety inching switch. Hold the 

diamond core drilling crown by the insulated grip surfaces, move forward slowly 

with the feed lever (4) and start tapping carefully. It may be an advantage to 

switch off the micro-pulse technology for tapping. 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 thrust 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. 

However, the drive unit does not switch off. If the thrust pressure is reduced, the 

turning speed of the drive unit increases again. This process does not damage 

the drive unit even if it is repeated several times. If the motor remains stopped 

despite the reduction in thrust pressure, the drive unit must be shut down and 

the diamond core drilling crown freed manually (see 5.).

WARNING

WARNING

Protector out the mains plug!

NOTICE

NOTICE

Always wet drilling with ROLLER’S universal diamond core drilling crowns 

and ROLLER’S universal diamond core drilling crowns LS for steel-

reinforced concrete!

Always dry drilling with ROLLER’S dry diamond core drilling crowns LS 

with core drilling machines with micro-pulse technology. Suck off the 

resulting drilling dust with a suitable safety vacuum cleaner/dust extractor! 

Observe the national regulations.

3.5  Wet-boring with drill upright

WARNING

WARNING

ROLLER’S Centro DP is delivered without a PRCD fault current circuit breaker 

and is suitable for dry drilling only. Wet drilling with, as well as connection of a 

water hose to the ROLLER’S Centro DP is not permitted. There is a danger of 

electric shock.

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 ROLLER’S universal diamond core drilling crown/ROLLER’S 

universal diamond core drilling crown LS onto the drive spindle (11) of the drive 

unit and lightly hand-tighten.  There is no need to tighten it with a wrench.

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