6
NMHX004
20-01-2015
Due to continuous product development and technical
improvements, technical information may be changed
without prior notice.
SAFETY INSTRUCTIONS
• Only switch gears when the motor is in a complete
standstill
• Plug in the machine only when it is switched off
• Prevent water with electricity through leaking, or
dripping from the hose
• A water collecting device must be used when drilling
overhead.
• Remove water safely using a water pump
• Always use the machine under supervision. Keep
hands away from rotating parts
• Double-check that the diamond drill is correctly as-
sembled and parallel with the drill rig.
• Before use, check that all screws of the drill motor
and drill rig are
fi
rmly in place. Because of vibrations
caused during drilling, screws can work loose and
cause damage or injury
• After use, do not touch metal parts of the drill ma-
chine and the diamond drill; this could be hot and
cause burns.
• Ensure that the drill machine does not start rotating
by accident; always disengage the switch when dis-
connecting from the power source, or if there is an
interruption to the power supply.
MAIN PARTS
1. ON/OFF
Switch
2. Overload
indication
3.
Carbon brush holders
4.
Motor mounting plate
5. Gear
switch
6. Water
fl
ow indication
7. Water
connection
8. Drill
connection
9. Spanner
insert
10.
Residual-current device (PRCD)
INTENDED USE
This is an insulated diamond core drilling machine
for WET use in combination with diamond core
drilling for drilling holes in stony materials and concrete.
The drilling machine can only be used in combination with
a drill platform.
POWER SUPPLY
The drill machine may only be connected to the voltage
which is stated on the type illustration and only works with
1-phase. The machine is insulated according to European
Guidelines and consequently may only be used via a trip
switch (PRCD) with an under voltage safety level of < 10
mA on an earthed electrical mains.
PRCD SWITCH
The machine electrical cable is equipped with a PRCD
switch which protects the operator against electrocution.
As soon as the drilling machine is plugged in, the PRCD
should be started up by pressing on the (green) -RESET-
button. If the PRCD is switched off , the -RESET- button
must be pressed again.
Note:
• The PRCD and the electrical cable should never come in
contact with water
• Check the PRCD by pressing the -TEST button before
use.
• Never use the diamond drilling machine without a
properly functioning PRCD
• Never replace the standard plug with another type of plug
WORKING PROCES
The drilling machine is equipped with a water tap, which
includes a ‘Gardena’ connection. Make sure that the core
drill is suf
fi
ciently cooled and that the slurry is properly
discharged. The maximum permitted water pressure is 3
bars. Always use clean water to enlarge the life span of
the internal water seals. In case of leakage, the drilling
machine has to be checked IMMEDIATELY by a certi
fi
ed
mechanical expert.
Tips
• Diamond drills which are not precisely circular cause
extra burden to the bearings and the cogs.
• Switch on the machine only if the diamond drill can turn
freely.
• When changing the diamond drill, always use 2 spanners.
Never use a hammer as this may damage the cogs.
Overload protection
To protect the motor, operator and diamond drill, the
machine is provided with a mechanical, electronic and
thermal overload safety system. Whenever the engine is
switched off due to overload, it must be switched on again
as soon as possible to cool the engine. Then let the drill
turn for a minimum of 1 minute.
1 - Electronic / Thermal
The LED indicates the load on the motor:
Continuously green
Normal load
Blinking red
Overload
Continuously red
Overload; the motor will switch off
automatically
2 - Mechanical
If the drill bit suddenly gets stuck, the slip coupling is
activated to disconnect the main axis from the engine.
Make sure you switch off the engine immediately and
remove the drill from the hole. When the slip coupling is
activated for a longer periods, the mechanical slip must be
re-tuned by a recognised expert.
ENVIRONMENTAL PROTECTION
According to the European regulation
2012/19/EU, CORE Powertools is
responsible to recycle old electric drill
motors. You are therefore requested to
return old CORE Powertools electric drill motors to your
local reseller.
ENGLISH – ORIGINAL INSTRUCTIONS