Table des Matières
Publicité
Les langues disponibles
Les langues disponibles
eng
2.5. Wet boring
Optimum drilling performance will only be achieved if the diamond
core drilling crown is provided with a constant supply of water. This
keeps the diamond core drilling crown cool and allows drilled-out
material to be swilled from the bore hole. To connect the water supply
system (15), remove the cover (14) and attach the water supply
system with the fillister head screw supplied. The quick-action
coupling with water shutoff device should be fitted with a
hose. Water pressure should not exceed 4 bar.
A water extractor unit (44) (accessory) should be used if required.
This consists of a water-collection ring and a pressure ring which is
secured to the foot of the boring trestle (1). The water-collection ring is
to be connected to a wet-suction extractor designed for industrial use.
The size and shape of the rubber gasket (45) in the water-collection
ring must exactly match the diameter of the annular bit.
2.6. Boring with a drill upright
Good results can be obtained by operating with a drill upright. The
purpose of the drill upright is to guide the drive unit. Its power transfer
rack-and-pinion drive system ensures both hole-tapping with „feel"
and powerful infeed of the diamond core drilling crown. The ROL-
LER'S Centro S1 and ROLLER'S Centro S3 can both be fitted to
either the ROLLER'S drill upright S or ROLLER'S drill upright D.
In the case of the ROLLER'S drill upright S, the feed slider (2) sup-
plied with the unit must be inserted into the boring trestle (1), along
with the feed lever and clamping angle, and advanced by turning the
feed lever (4). The two reverse adjustment screws (5) should also be
screwed in.
With the ROLLER'S drill upright D, the clamping angle (10) and short
fillister head screws (supplied with the unit) should be screwed to the
feed slider (2). In this configuration, the ROLLER'S drill upright D can
be used to drill at up to Ø 132 mm. For larger core-drilling operations,
the spacer (38, supplied with unit) must be inserted between the feed
slider (2) and clamping angle (10), and secured with the long fillister
head screws. The spacer should however only be fitted if you actually
intend to drill at > Ø 132 mm, as the drive unit runs in a more stable
way without the spacer.
The boring trestle (1) of the ROLLER'S drill upright D is infinitely adju-
stable up to an angle of 45°. This allows angled core-drilling opera-
tions to be carried out within this range. To adjust the angle, use an
SW 19 wrench to loosen the screws (37) at the foot of the boring
trestle (1), along with all the screws on the two struts (40). The boring
trestle can now be swivelled to the desired position. Retighten all
screws before proceeding. The swivel adjustment of the boring trestle
causes the useful stroke range of the feed device of the ROLLER'S
drill upright D to increase or decrease accordingly. This means that
you may have to use corresponding annular-bit extensions (see 3.7.).
The feed slider (2) on both drill uprights can be locked into determined
positions. In the case of the ROLLER'S drill upright S, this is done by
moving the slotted sleeve (3) on the feed shaft, while at the same time
turning the feed lever axially in relation to the feed-mechanism hou-
sing until it engages. On the ROLLER'S drill upright D, the locking bar
(36) is pulled towards the drive unit and pushed downwards. If the
feed slider (2) is now moved, the locking bar engages with the next
alignment hole along (35) in the boring trestle. Locking prevents such
undesired movements as the accidental lowering of the drive unit
while the diamond core drilling crown is being replaced.
On the ROLLER'S drill upright S and ROLLER'S drill upright D, the
feed lever (4) can be secured, in accordance with operating condi-
tions, on either the right- or left-hand side of the feed slider (2). The
feed slider should be locked, as described above, when doing so. In
the case of the ROLLER'S drill upright S, the turning handle (9) and
two washers on the opposite side of the feed lever are removed; then
the feed shaft is pulled out of the feed-mechanism housing, along with
the feed handle, and pushed in again from the other side. Refit the
washers and turning handle. On the ROLLER'S drill upright D, only
the feed lever (4) is pulled off the feed shaft. It is then pushed onto the
shaft butt end on the opposite side.
3. Operation
Connect by plugging into the mains supply. Always check the PRCD
All manuals and user guides at all-guides.com
1
/
" water
2
•
•
•
3.1. Manually-controlled dry boring
fault-current safety switch (19) for correct functioning before starting a
drilling operation. To do so, press the RESET button (17) and watch
for the red indicator light (16, operating status). The indicator light
should go off when the mains plug is pulled out. Push the mains plug
back into its socket and press the RESET button. The indicator light
should be red (operating status). Press the TEST button (18), and the
indicator light should go out. Press the RESET button (17) again, and
the drive unit is ready for operation.
Important: DO NOT start drilling operations if any of the above
PRCD functions are defective! DANGER OF FATAL ACCIDENT!
Different material characteristics (concrete, steel-reinforced concrete,
porous or solid masonry) require different and varying feed pressures
on the diamond core drilling crown. Further influence is brought to
bear by the varying peripheral speed and size of the bit. It is inevi-
table, especially during manually controlled boring, that the machine
will occasionally become slightly tilted as it operates. These factors,
which are merely examples of those that might arise, can lead to
overloading of the drive unit during drilling operations. You will nor-
mally hear the turning speed of the motor drop, although the diamond
core drilling crown may become completely blocked. This can lead,
especially during manually-controlled boring, to torque-related jarring
– which will affect the operation.
Important: Note that the diamond core drilling crown can become
blocked at any time. During manually controlled core drilling, there is
a danger of the drive unit jumping out of your hands.
In order to simplify the handling of the machine, and to avoid damage,
the ROLLER'S Centro S1 and ROLLER'S Centro S3 are equipped
with a multi-function electronic system, along with a mechanical sli-
ding clutch. The multi-function electronic system performs the follo-
wing tasks:
Initial-current limitation and jerk-free startup for smooth tapping.
Limiting of idling speed in order to reduce noise and prevent wear to
the motor and transmission.
Motor overload regulation relative to feed pressure. Before the drive
unit can be overloaded by excessive feed pressure on the diamond
core drilling crown, or as the result of a blockage, the motor supply
current – and thus its turning speed – is reduced to a minimum. The
drive unit does not shut down however. As the feed pressure is redu-
ced, 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.).
Important: DO NOT switch the drive unit on and off in an attempt to
free a blocked diamond core drilling crown.
Important: Never carry out manually-controlled drilling without first
fitting the holder-up. DANGER OF ACCIDENTS!
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 tapping tool (see 2.4.1.). Secure
the drive unit to the motor handle (20) and holder-up (12), and locate
the tapping tool at the centre of the desired core-drilling point. Activate
the drive unit at the switch (21).
Important: Avoid accidents: NEVER block the drive unit switch during
manually-controlled boring! If the drive unit is knocked out of your
hands as a result of a blocked diamond core drilling crown, a blocked
switch can no longer be released. The drive unit will then run out of
control, and the unit must be shut down by unplugging it from the
mains supply.
To make a tapping hole, drill until the diamond core drilling crown has
bored to a depth of about 5 mm. Remove the tapping tool, using a
SW 19 wrench if required. Using the dust-extraction system (see
2.4.2.). Continue boring until the core-drilling operation is complete.
PREVENT ACCIDENTS: The drive unit should be held firmly through-
out in order to prevent torque-related jarring. Check to ensure correct
stability. Carry out larger core-drilling operations with the drill upright.
If the dust produced by dry boring is not removed, the diamond core
eng
Publicité
Table des Matières
