eng
115 V, 50–60 Hz
Idling
940 min-
1
At rated load
740 min-
1
1.5. Electrical specifications
Supply voltage
Power consumption
Rated current capacity
Fuse protection
(mains network)
Fault-current safety switch
PRCD
with low-voltage release
Supply voltage
Power consumption
Rated current capacity
Fuse protection
(mains network)
Fault-current safety switch
PRCD
with low-voltage release
1.6. Dimensions (L x W x H)
ROLLER'S Centro S1 drive unit 60 x 160 x 100 mm (18.1"×6.3"×3.9")
ROLLER'S Centro S3 drive unit 540 x 160 x 100 mm (21.3"×6.3"×3.9")
ROLLER'S Centro S2/3,5
drive unit
ROLLER'S drill upright S
ROLLER'S drill upright D
ROLLER'S drill upright D 300
1.7. Weights
ROLLER'S Centro S1 drive unit
ROLLER'S Centro S3 drive unit
ROLLER'S Centro S2/3,5 drive unit
ROLLER'S drill upright S
ROLLER'S drill upright D
ROLLER'S drill upright D 300
1.8. Noise emissions
Workplace emission level
Operating sound level
1.9. Vibrations
Weighted effective value of
acceleration
2. Initial startup
2.1. Electrical connection
Before connecting the machine, check to ensure that the mains voltage
matches that indicated on the machine rating plate. Always check the
PRCD fault current-safety switch (19) for correct functioning before
starting up at the beginning of each session (see 3.).
2.2. ROLLER'S Centro S1, ROLLER'S Centro S3 and
ROLLER'S Centro S2/3,5 drive units
The ROLLER'S Centro S1, ROLLER'S Centro S3 and ROLLER'S Centro
S2/3,5 drive units are universally applicable for both dry and wet drilling,
either manually controlled (Centro S1, Centro S3) or with drill upright.
The combined drill crown connection of the drive spindle (11) of ROL-
LER'S Centro S1 and ROLLER'S Centro S3 allows both the direct mo-
unting of diamond core drill crowns with internal thread UNC 1¼ and
with external thread G ½. The Centro S1 and Centro S3 drive machines
are not delivered with the water feeding device (15) pre-assembled but
loose. The adapter for the water connection on the drive machines is
closed by a cover (14). In this condition the drive machines (ROLLER'S
Centro S1, ROLLER'S Centro S3) are used for dry drilling. The water
feed device is already pre-assembled on the ROLLER'S Centro S2/3,5.
For wet drilling, see 2.5.
The drive-unit turning speed required for cost-effective core drilling de-
pends on the diameter of the diamond core drilling crown. Select the
turning speed of the drive unit in such a way that the peripheral speed
770, 1860, 2580 min-
1
440, 1030 min-
570, 1380, 1920 min-
1
290, 680 min-
Centro S1 Centro S3
Centro S2/3,5
230 V, 50/60 Hz
1800 W
2200 W
3420 W
8.4 A
10 A
16 A
10 A (B)
16 A (B)
16 A (B)
10 mA
10 mA
10 mA
115 V, 50/60 Hz
1700 W
2050 W
2820 W
15 A
18 A
25 A
20 A
25 A
25 A
6 mA
6 mA
6 mA
490 x 170 x 135 mm (19.3"×6.7"×5.3")
400 x 200 x 775 mm (15.7"×7.9"×30.5")
440 x 230 x 935 mm (17.3"×9.1"×36.8")
480×300×1060 mm (18.9"×11.8"×41.7")
5.2 kg (11.5 lb)
7.4 kg (16.3 lb)
13.6 kg (30.0 lb)
9.7 kg (21.4 lb)
12.8 kg (28.2 lb)
16.2 kg (35.8 lb)
Centro S1 Centro S3 Centro S2/3,5
90 dB (A)
90 dB (A)
91 dB (A)
103 dB (A) 103 dB (A) 104 dB (A)
2.5 m/s
2
2.5 m/s
2
2.5 m/s
(cutting speed) of the diamond core drilling crown runs within a range
1
between 2 and 4 m/s. It is of course possible to carry out drilling opera-
1
tions outside this optimum range, albeit subject to reductions in the
operating speed and/or service life of the diamond core drilling crown.
Higher peripheral speed apply in masonry.
The turning speed of the ROLLER'S Centro S1 is adjusted to a fixed
setting. From a drilling diameter of 62 mm, the ROLLER'S Centro S1
operates in concrete in the optimum peripheral speed range, which al-
ways remains inside acceptable limits when smaller diameters are being
handled. The attachment method used with the diamond-tipped seg-
ments of the ROLLER'S Universal diamond core drilling crown has been
modified so that smaller diameters can also be drilled efficiently with the
ROLLER'S Centro S1.
The turning speed of the ROLLER'S Centro S3 can be selected by means
of a three-speed stepped drive to ensure that in concrete it always ope-
rates within the optimum drilling speed range. The correct speed can be
taken from the machine rating plate (Fig. 7) of the ROLLER'S Centro S3.
The first column of the table shown there covers speeds 1 to 3, the se-
cond column shows the corresponding turning speeds, the third column
the core bit diameters for masonry and the fourth column contains core
bit diameters for steel-reinforced concrete. It shows, for example, that a
Ø 102 mm core-drilling operation in masonry should be carried out in third
speed, while drilling into steel-reinforced concrete requires the use of first
speed.
The turning speed of ROLLER'S Centro S2/3,5 can be selected by a 2-
step switching gear so that it always drills in an optimum area. The right
gear can be read from the rating plate (Fig. 8) of ROLLER'S Centro
S2/3,5. The table there shows gears 1 and 2 in the first column and the
corresponding speeds in the second column and the drill crown diame-
ters for masonry and steel-reinforced concrete in the third column.
Important: Wait for the machine to come to a halt before engaging the
transmission. Never try to do this during operation or outflow. If you can-
not engage a particular speed, turn the handle grip (39) and rotate the
drive spindle/diamond core drilling crown by hand at the same time. Pull
out the mains plug first!
2.3. Universal diamond core drilling crowns ROLLER'S UDKB
The cutting characteristics of the diamond core drilling crown are de-
termined by the quality of the diamonds, the particle-size and shape of
the diamonds, and also by the bonding agent – the metal powder in
which the diamond particles are set. Users who need to carry out a va-
riety of core-drilling operations should keep a range of diamond core
drilling crowns of different sizes to hand in order to optimise the cutting
process. It is often only possible to ascertain onsite which diamond core
2
drilling crown is ideal, in terms of cutting performance (operating speed)
and service life, for a particular drilling task. You may even have to contact
the manufacturer of the diamond core drilling crown on various occa-
sions in order to find out which bit should be used.
ROLLER has developed the Universal diamond core drilling crown for
use in common drilling operations. These bits are universally applicable
for both dry and wet drilling, either manually-controlled or with drill upright.
The connection thread of the ROLLER'S Universal diamond core dril-
ling crown UNC 1
ROLLER'S Centro S3, and with suitable drive units from other suppliers.
If the connection thread proves to be incompatible with the drive unit,
special adapters are available as accessories (22).
2.3.1. Fitting the diamond core drilling crown
Unplug from the mains power supply. Screw the selected diamond core
drilling crown onto the drive spindle (11) of the drive unit, and lightly
hand-tighten. It is an advantage to insert the quick-release ring (art. no.
180015) between the diamond core drill crown and the drive spindle.
There is no need to tighten it with a wrench. Note that the threads on
the drive spindle and diamond core drilling crown must be clean.
2.3.2. Removing the diamond core drilling crown
Unplug from the mains power supply. Use an SW 32 wrench to hold the
drive spindle (11) and an SW 41 wrench to loosen the diamond core
drilling crown (48).
Always unscrew the diamond core drilling crown from the drive unit when
the drilling task is finished. With wet-drilling operations in particular, there
1
/
is compatible with the ROLLER'S Centro S1 and
4
eng