BTI 220 Manual Del Usuario página 16

English
accessories for drilling diameters below 330 mm. In the
other cases, use liquid tight motors (hydraulic, pneumatic,
liquid tight three phase). We recommend anyways to use a
water collecting system.
Feed handle
Move the carriage (C) along the column (B) by turning the
feed handle (E). Figure 6 shows how to mount the handle to
the carriage shaft (Q). You can mount the handle to the left
or to the right side of the carriage. Some models can be
equipped with a feed system that powers the travel of the
carriage.
Locking the carriage
The carriage is equipped with a locking system (figure 7).
The carriage must be locked when you mount the core drill
motor, when you mount or replace the core bit or when you
transport the stand.
Cerca centro – Guida corona
The base can be provided with a device (G) with two
features: "cerca centro" e "guida corona". Proceed as
follow:
Cerca centro
The "cerca centro" feature is used to define easily the
center of the hole you're going to make. Proceed as follow:
unscrew the lock devices (R);
extract the "cerca centro – guida corona" device till
you reach the mark corresponding to your core drill
motor shaft's axle.
Guida corona
The "guida corona" feature allows to guide the core bit
during the starting of the hole. It helps to avoid core bit
vibrations. Proceed as follow:
unscrew the lock devices (R);
extract the "cerca centro – guida corona" device till
it touch the core bit surface.
screw the lock devices (R);
drill for al least 1 cm;
unscrew the lock devices (R) and pull the "cerca
centro – guida corona" device towards the base.
Mounting the core drill motor
The core drill motor can be mounted to your stand in
different ways depending on your stand model. The motor
can be mounted to the carriage with a direct mounting, with
a rapid lock system or using the collar. Identify which
mounting system has your stand.
Direct mounting
Proceed as follows, referring to figure 8:
lock the carriage;
place the core drill motor on the carriage plate,
making sure that the key goes inside the slot of
the core drill motor. Make sure the drill motor is
unplugged when you do these operations;
secure the motor with the screws. Tighten them
using the Allen key provided. Use at least 4
screws.
Rapid lock system mounting
Proceed as follows, referring to figure 9:
lock the carriage;
position the plate square key into the slot on the
underside of the core drill motor, making sure
that the key goes into the corresponding slot.
Secure it by tightening at least 4 screws. Make
sure the core drill motor is unplugged when you
do these operations;
position the core drill motor on the carriage as;
secure the motor by tightening the two side-
screw with the multiuse feed handle.
To dismantle the plate follow backwards the steps before,
making sure that you hold the motor when you loosen the
side-screws to prevent that it drops off.
Collar mounting
For some rig stand types you can mount your core drill
motor using the collar. Collar fastening is suitable if the
drilling diameter is below 160 mm.
The diameter of the collar is 60 mm.
There are 2 BTI collars:
screws mounting collar;
rapid lock collar.
Proceed as follows for the screws mounting collar (figure
10):
secure collar
described in paragraph "Direct mouning";
position the hand-held core drill into the collar;
tighten the screws of the collar, making sure
that the core drill is securely fastened.
Proceed as follows for the rapid lock collar (figure 10):
secure the rapid lock collar to the carriage
plate as described in paragraph "Rapid Lock
system mounting";
position the hand-held core drill into the collar;
tighten the screws of the collar, making sure
that the core drill is securely.
Tilting the column (figure 11)
The column can be tilted for slope drilling applications
(except drill stands without holding bars). Proceed as
follows:
Loosen the screws indicated by arrows in the
figure and remove the screws (S) and the
plate (T);
tilt the column;
tighten all the screws loosened before.
When you start drilling, apply light pressure, in order to
prevent core bit shifting.
Maximum drilling diameter and core drill
motor limitations
8
to the carriage plate as