Cardi T1 ME-EL, User Manual

Page: 13 / 20

3 English
Warning: If you don’t use the auxiliary
handle you can lose control of the core drill
and this can lead to serious personal
injuries.
If you use your core drill with a stand, fix the machine
into the collar of the stand as shown in figure 16.
Follow instructions given by the stand
manufacturer to fix the stand to the
material you want to drill.
b) Follow these instructions:

if you want to operate in wet mode, connect the
hosepipe to the core drill as explained in the
following Water insertion paragraph. Make sure that
the water valve is shut.
 if your core drill is equipped with a gear change
(figure 2 A), see the data plate on your core drill as
shown in figure 12. Identify the right rotating speed
according to the diameter of the core bit you are
using and the material you are drilling. The symbol
refers to abrasive materials (like tiles, gasbeton,
poroton…), the symbol refers to hard materials
(like reinforced concrete…). Select the required
gear change position just when the motor is at
standstill;

refer to the following paragraph Diamond core bit
mounting and replacement in order to mount the
core bit to your core drill.
ON/OFF switch
See figure 9.1 and 9.2 in order to understand how to use the
switch;
 the main switch of your core drill machine is
equipped with a block (lock-on) device that blocks
the switch in the on position.
Warning : this device can be used ONLY
when the machine is fixed to a proper stand.
You must not use the block device when you
are using your core drill hand-held;

your switch can be equipped with a safety anti lock-
on device (N), shown in figure 9.2, that doesn’t
allow you to use the block device when the core
drill is used hand-held.
Warning : for your safety, you must get
familiar with the switch in order to prevent the
unintentional switching on of the core drill.
Connection to a water supply
Wet drilling needs the insertion of water into the core drill.
This can be done in two ways: by using the water insertion
system shown in figure 2 or by using the combined system
shown in figure 3. During wet drilling follow these
instructions:
 use just the water insertion systems provided with
your machine, depicted in figure 1, 2 or 3. The
water systems include a valve (C) and a quick hose
connector (D);

the maximum pressure allowed of the incoming
water is 4 bar;
 use just clean water;
 make sure that the water doesn’t come into contact
with any electric part of your core drill;
 check regularly that none of the water system
components are damaged. Check in particular the
valve (C), the quick hose connector (D) and,
alternatively, the connectors (F and G) or the pipe
and the elbow connector.
Combined dust extraction and water
insertion system
Your core drill can be equipped with a combined dust
extraction and water insertion system integrated into the
machine, shown in figure 3. You can use this system to
insert water or, alternatively, to extract dust using an
industrial vacuum cleaner. The following instructions show
you how to use this system in the these two modes.
Water insertion

mount the quick hose connector (D) to the
hosepipe, making sure that the valve is shut
(perpendicular to the water stream);
 join the connector G to the connector F mounted to
the core drill. Make sure that the two connectors
are firmly joined;
Dust extraction

connect a proper industrial vacuum cleaner to the
pipe connection device (H). The vacuum cleaner
must be suitable to suck thin dust up;
 connect the pipe connection device to the quick
connection device (F).
As an alternative, you can use a special accessory (R).
Checks and precautions to avoid
structural damage and damage to the
plant
Before starting any drilling activity, talk with the construction
manager or the planner in order to make sure that the
drilling doesn’t:
 make any damage to the structure of the building
and doesn’t change the structural characteristics of
the construction;
 damage any water or gas pipeline or any electric
mains.
Checks and precautions to avoid damage
caused by the fall of the core
 before drilling, make sure that the possible falling
out of core from the other side of the hole doesn't
make any damage. Always bound the area where
the core can fall and signal the danger;

if the possible fall of the core can make damage,
make a system that holds the core when drilling is
completed.
Start drilling device
When you use your core drill hand-held, you must use a
start drilling device. Some examples are shown in figures
13, 14 and 15. This devices allow safe and precise drilling.
Warning : not using these devices can lead to
excessive arms vibration.
Core bit choice
The maximum and minimum core bit diameter, according to
the kind of drilling performed, is reported on the data plate
on your core drill. Pay attention to further limitation to the
core bit diameter reported in the paragraph Drilling
technique choice .
Warning: for your safety do not use different core
bits from the ones prescribed for your specific
application.