CS Unitec DBE 160 User manual

CS UNITEC, INC.
Operating Instructions
DBE 160

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Important Instructions
Important instructions and warning notices are allegorated on the machine by
means of symbols:
Before you start working, read the operating instructions
of the machine.
Work concentrated and carefully. Keep your work-place
clean and avoid dangerous situations.
In order to protect the user, take precautions.
During work you should wear goggles, ear protectors, protective
gloves, and water proofed working clothes!
wear ear protectors
wear goggles
wear protective helmet
wear protective gloves
wear protective boots

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Diamond Drilling Unit DBE 160
Nominal voltage 110 / 120 V ~
Rated current 18 Amp.
Frequency: 40-60 Hz
No-Load Speed: 700 rpm
max. Drilling Diameter: 6 inch
Collet: 1¼" UNC
Protection Class: I
Degree of protection: IP 20
Net Weight: about 15.5 kg
Interference Suppression: EN 55014 und EN 61000
Subject to alterations!
Diamond core drill unit complete w/ rig, ball valve and GARDENA connector,
PRCD protective switch, user manual, in the carton box
The diamond core drill DBE 160 is indented for professional use and may be
used only by instructed personnel.
With an appropriate drill bit, the tool may be used only for wet cutting of
concrete, stone and masonry.
It may be used only complete mounted.
A
pp
lication for Indented Pur
p
ose
Technical Data
Content of Delivery

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Safe work with the machine is only possible if you read
this operating instruction and the safety instructions
completely and follow the instructions contained strictly.
Additionally, the general safety instructions of the leaflet
supplied with the tool must be observed. Prior to the first
use, the user should absolve a practical training.
If the mains cable gets damaged or cut during the use, do not
touch it, but instantly pull the plug out of the socket. Never use
the tool with damaged mains cable.
When drilling in ceilings or walls make sure you will not cut
through electrical mains, gas or water pipes. Use metal
detection systems if needed.
Prior to the start of your work, consult a statics specialist to
determine the exact drilling position.
If drilling through ceilings, secure the place below, because
the may fall downward.
The tool must neither be wet nor used in humid environment.
Do not use the tool in an environment with danger of explosion.
Do not use the tool standing on a ladder.
Do not drill into asbestos-containing materials.
Do not carry the tool at its cable, and always check the tool, cable and
plug before use. Have damages only repaired by specialists. Insert the
plug into the socket only when the tool switch is off.
Modifications of the tool are prohibited.
The machine should only work under supervision of sbd. Plug and
switch the machine off if it is not under supervision, in case of putting
up and stripping down the machine, in case of voltage drop or when
fixing or mounting an accessory.
Switch the machine off if it stops for whatever reason. You avoid that
it starts suddenly and not under supervision.
Don’t use the machine if a part of the housing is damaged or in case
of damages on the switch, the cable or plug.
Electrical tools have to be inspected visually by a specialist in regular
intervals.
When using the drill, cooling water is not allowed to get into the
motor and all electrical parts.
Overhead-drilling only with suitable safety measures (water
collection).
Safet
y
Instructions

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Stop working when water is dripping out of the overrunning bore hole
and take the machine to an authorised service shop.
After breakdown the machine should only be switch on again if the
drill bit can be turned.
On using the tool, wear ear protectors.
Do not touch rotating parts.
Persons under 16 years are not supposed to use the tool.
During use, the user and other persons standing nearby have to wear
suitable goggles, helmets, ear protectors, protective cloves and boots.
Always work with concentration. Always work in a carefully
considered way and do not use the tool if you are lacking
consideration.
For further safety instructions please refer to the enclosure!
The DB 160 is made in protection class I. For protection purposes the
machine can only be run with a GFCI. The machine is standard equipped with
a PRCD switch in the cord which allows to connect the unit direct to a
grounded socket.
! Attention!
- The PRCD protective switch must not lay in water.
- PRCD protective switches must not be used to switch the
tool on and off.
- Before starting your work, check the proper function by
pressing the TEST button.
Use only 3-wire extension cable with protecting conductor and sufficient
cross-section ( min. 2,5 mm2). A cross-section which is to small could lead to
excessive power loss and to overheating the motor and the cable.
First, check the correspondence between voltage and frequency against the
data mentioned on the identification plate. Voltage differences from + 6 % to –
10 % are allowed.
Connect the tool to the water supply system or a water pressure vessel using
the GARDENA connector.
Attention! The max. water pressure should not be more than 3 bar.
Make always sure that the machine only runs with enough water as the seals
can be damaged when running dry and water could get into the gearbox
housing. Use only mains water.
Electrical Connection
Wate
r
Connection

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In order to protect the operator, the motor and the drill bit the DBE 160
is equipped with a mechanical, electronic overload protection.
Mechanical: If the drill bit is suddenly blocked in the hole, a clutch will slip
disengaging the bit from the motor.
Electronic: In case of overload due to too large feed force, the motor is
switched off automatically. After discharge, switching OFF
and ON again, drilling can be continued.
The slip clutch should absorb shock and excessive stress. It is an aid and not
an absolute protection. Therefore you have to handle and drill carefully. To
keep in good condition, the clutch should slip for a very short time (max. 2
seconds) in each case only. After excessive wearing the clutch can be
readjusted by an authorized service shop.
The DBE 160 diamond core drill may be used only on the drill rig.
The most common way of fixing is dowel fixing.
If possible, use only metal dowels. The dowel diameter must not be smaller
than 12 mm.
For the vacuum, make sure that it is sufficient ( minimum -0.8 bar). Make sure
that the gaskets are not worn.
Do not forget that the levelling screw may be turned out only up to a certain
extend in order not to destroy the vacuum.
Using the ball valve, adjust a sufficient water quantity to fully flush the
material out of the bore hole.
If mud is depositing around the bore hole, increase the water quantity.
In case that the drill bit does not cut any longer, sharpen it by means of a
grinding stone.
Make sure that the drill bit does not vibrate.
Advance the tool according to bit diameter and machine power.
Overload Protection
Safety Clutch
Fastening of the Drill Rig
Drilling

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In case the bit gets jammed, to not dry to release it by switching the tool on
and off. Switch the tool off immediately and unfix the drill bit by turning to the
left or right using an appropriate open-end wrench. Cautiously pull the tool out
of the borehole.
Diamond drill bits with an 1/¼" UNC female thread can be screwed directly
onto the working spindle.
Always use drill bits which match to the material which has to be drilled. You
can treat the machine if you only use balanced and no deformed drill bits. Pay
attention that diamond segments have enough relief cut toward the drill bit
body.
The drill bit have a right-hand thread.
To hold on spindle use an open-end wrench SW 32.
Never remove the drill bit with impacts because the machine will be
damaged.
With some waterproof grease which is put on the drill bit thread you can
remove the drill bit easier.
It is also a good help for easy removing to put a copper ring between the
spindle and the drill bit.
Before the beginning of the maintenance- or repair works you
have to disconnect plug from the mains.
Machine :
Repairs may be executed only by appropriately qualified and experienced
personnel.
After every repair the machine has to be inspected by an electric specalist.
Due to its design, the machine needs a minimum of care and maintenance.
Regularly the following works have to be carry out or rather the component
parts have to be inspect.
-Clean the machine after finishing work.
-Later on you have to grease the drill bit thread.
-The ventilation slits have to be clean and open.
Drill Bits
Drill Bit Changing
Care and Maintenance

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-Pay attention that no water get into the machine during the cleaning
process.
-After the first 150 hours of operating you have to replace the gear oil.
Gearing oil changes bring about an essential increase of the tool’s
lifetime.
-After approx. 200 hours of operating the carbon brushes have to be
checked by a specialist and if necessary remove them. (Only use original-
carbon brushes.)
-Quarterly the switch, the cable and the plug have to be checked by a
specialist.
Drill Stand :
-Always keep the drill stand clean, especially the drill support with the gear
and the 4 sliding pieces in the holder of the machine. In order to allow the
free movement of the pinion shaft it should be slightly lubricated.
-The sliding pieces must move along the drill support without slackness in
order to achieve a good performance.
If the position should have changed, it can be readjusted as follows :
Using a 5 mm Hexagon wrench, loosen
both Allen screws (1).
Adjust the two positioning screws (2)
with a screwdriver
Tighten the screws (1) again and check
whether the diamond drill stand moves
smoothly
The A-rated acoustic pressure level of this machine is typically less than 70B
(A).
The level of acoustic pressure on work site could exceed 85 dB (A); in this
case protection means must be used.
Wear ear protectors!
The hand / arm vibration is typically less than 2,5 m /s² .
The indication of noise emission is measured after EN 50 144 .
Noise Emission
1
1 2
2

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In case of malfunctions switch the tool off and pull the
mains plug. Repairs on the electric parts of the tool may
only be performed by an electrical specialist.
Malfunction Possible cause Repair
Tool does not
operate Line voltage interrupted Plug in other electric tool, check function
Power cable or plug
defective
Switch defective
Have them checked by
specialist, replace if needed.
Have it checked by specialist,
replace if needed
Motor runs- drill
bit does not turn Transmission defective Have the tool repaired by an authorized service point
Drilling speed
decreases Water pressure/water throughput too high
Drill bit defective
Transmission defective
Drill bit polishes
Regulate water throughput
Check drill bit for damages,
exchange if needed
Have the tool repaired by an
authorized service point
Sharpen drill bit on oilstone with
water flushing running
Motor switches
Off Engine stops Tool overheated
Overload protection
activated
Hold tool in a straight position
Disengage tool and put it back
to operations by activiting the
switch
Water leaks from
transmission
housing
Gland rings defective Have the tool repaired by an
authorized service point
Drillsystem has
too much
backlash
Guidance hat too much
backlash readjust the guidance (page 7)
In Case of Malfunction

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Warranty
Raw Material Recycling instead of Waste Disposal
In order to avoid damages on transportation, the tool has to be delivered in
solid packaging. Packaging as well as unit and accessories are made of
recyclable materials and can be disposed accordingly.
The tool’s plastics components are marked according to their material, which
makes it possible to remove environmental friendly and differentiated
because of available collection facilities.
According to the general supply conditions for business dealings, suppliers
have to provide to companies a warranty period of 12 months for redhibitory
defects . (To be documented by invoice or delivery note.)
Damage due to natural wear, overstressing or improper handling are
excluded from this warranty.
Damages due to material defects or production faults shall be eliminated free
of charge by either repair or replacement.
Complaints will be accepted only if the tool was returned in non-dismantled
condition to the manufacturer.
On sole responsibility we declare that this product is in conformity with the
following standards and standard documents:
EN 50 144, EN 55 014, EN 61 000, IEC 60 745
According to the regulations 73/23/EWG, 89/336/EWG, 98/37/EG
Elektrowerkzeuge GmbH Eibenstock
Lothar Lässig
21.07.2005
Declaration of Conformity
Environmental Protection

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