Kernlochbohrer DKB-352/S-PRO Manuale utente
Operating instructions
Diamond core drill
DKB-352/S-PRO DKB-502/S-PRO
Kernlochbohrer GmbH
Geigersbühlweg 52
72663 Großbettlingen
Phone 07022-5034900
E-mail: info@kernlochbohrer.com Version 0 2. Output 5/2023
Content
Introduction and description 3
About this guide 3
Thanks to the buyer 4
Explanation of symbols 4
Safety regulations 4
Technical data 8
Product description 9
Use and care 10
Precautions 10
Mounting and assembly of drill motor and stand 11
Changing drill bits 12
Drill and machine cooling 13
Electrical connection 13
Water supply connection 14
Speed selection 14
Drilling 15
Mechanical overload protection 16
Electronic overload protection 16
Overvoltage protection 17
Overheating - Thermal protection 18
Carbon brush warning system 18
Daily maintenance of the power tool 19
Maintenance and inspection plan 20
Troubleshooting 21
Environmental protection 23
Noise/Vibration 24
Warranty 24
Exploded view 25
EC Declaration of Conformity Attachment
2
Introduction and description
The core drilling equipment of the DKB-PRO series is intended for professional use
and may only be operated by instructed persons. Strictly adhere to the instructions
in the operating manual to avoid electric shock or fire.
Our company declines all responsibility in the event of violations of the operating
instructions that may lead to injuries or machine damage. In addition, all currently
applicable regulations of the Accident Prevention Regulations (UVV) and the
Employer's Liability Insurance Association (BG) must be observed.
In conjunction with the appropriate drill bits, the machine is intended for drilling
concrete, stone and masonry in wet cutting. The machine may only be used in
conjunction with the appropriate drill stand. Care must be taken to ensure that you
select the correct drill bit for the corresponding drilling technique in each case.
The machine may only be serviced by persons who have the appropriate
qualification and certification.
About this guide
These operating instructions are for the model
DKB-352/S-PRO
DKB-502/S-PRO
Check the machine model against the nameplate.
3
Thanks to the buyer
Thank you for purchasing a core drill of the DKB-PRO series from Kernlochbohrer
GmbH. Please read the operating instructions carefully and observe the safety
instructions. Through proper operation, you will fully appreciate the outstanding
performance of our products. Keep this manual in a safe place for future reference.
If you have any questions about the operation of the core drill, please contact the
core drill GmbH directly. We are available to answer your questions at any time.
Note:
Kernlochbohrer GmbH reserves the right to change the design and appearance of
the products and their operating instructions. Future changes to the operating
instructions will be made without prior notice.
Explanation of symbols
Warning from general Danger. Failure to follow these safety precautions and
instructions may result in electric shock, fire and/or serious injury.
Safety regulations
❖Read all precautions before start-up and keep the operating instructions. In
addition, all currently applicable Regulations the Accident prevention regulation
(UVV) and the Employer's Liability Insurance Association (BG) must be
observed.
❖Please follow the operating instructions carefully, as failure to follow these
safety precautions and instructions may cause electric shock, fire and/or
serious injury.
4
1. Keep your work area clean and well lit. Disorder or unlit work areas can lead to
accidents.
2. Do not work with the power tool near flammable liquids, gases or dust. Power
tools produce sparks that can ignite dust or fumes, causing explosions.
3. Keep children and other persons away while using the power tool. If you are
distracted, you may lose control of the tool.
4. Be attentive, work with concentration and pay attention to what you are doing.
Do not use a power tool when you are tired or under the influence of drugs,
alcohol or medication. A moment of inattention can result in serious injury.
5. Wear suitable protective equipment and always protective goggles. Wearing
suitable protective equipment such as a dust mask, non-slip safety shoes, hard
hat or hearing protection reduces the risk of injury.
6. Avoid unintentional starting of the machine. Make sure that the power tool is
switched off before connecting it to the power supply. If you have your finger on
the switch when carrying the power tool or connect the machine to the power
supply when it is switched on, this can lead to accidents.
7. Remove setting tools or wrenches before switching on the power tool. A tool or
wrench that is on a rotating device can cause injury.
5
8. Avoid unusual postures. Ensure a secure footing and maintain your balance at
all times. Do not work on a ladder. This will give you better control of the power
tool in unexpected situations.
9. Wear appropriate clothing. Do not wear loose clothing or jewelry. Keep hair,
clothing and gloves away from moving parts. Loose clothing, jewelry or long hair
can be caught by moving parts.
10. Do not overload the device. Use the appropriate power tool for your work. With
the appropriate power tool, you will work better and more gently in the specified
power range.
11. Do not use a power tool whose switch is damaged. A power tool that cannot be
switched on and off is dangerous and must be repaired.
12. Unplug the power tool from the wall outlet before making any device
adjustments, replacing accessories, or setting the power tool aside. This safety
measure prevents unintentional starting of the power tool.
13. Keep unused power tools out of reach of children. Do not allow persons to use
the device who are not familiar with it or have not read these instructions. Power
tools are dangerous when used by inexperienced persons.
14. Note that the voltage must not exceed +/-5% of the nominal voltage. Higher
voltages can cause irreparable damage. Note that higher voltage peaks are not
generated when operating the machine via a generator.
15. The plug of the power tool must match the socket. Do not change the plug
under any circumstances. Do not use adapter plugs with grounding-type forces.
Unmodified plugs and matching outlets reduce the risk of electric shock.
6
16. Avoid body contact with grounded surfaces or grounded components such as
pipes, radiators, stoves, and refrigerators.
17. Do not expose power tools to rain or wet conditions. Water entering a power
tool increases the risk of electric shock.
18. Never use the cord to carry or pull the power tool or to unplug the power tool
from the wall outlet. Keep it away from heat, oil, sharp edges or moving parts.
Damaged, crushed or twisted cables increase the risk of electric shock.
19. When using a power tool outdoors, use only an extension cord that is suitable
for outdoor use. Using a cord that is suitable for outdoor use reduces the risk of
electric shock. When using with an extension cord, also make sure that the
extension cord has the same cross-section as the cord on the machine.
20. The use of products such as cutters, grinders, drills that machine sand or other
materials can generate dust and fumes that may contain hazardous chemicals.
Check the type of material you are going to machine and use a suitable
respirator.
21. Non-approved spare parts and any modification are prohibited on our products.
22. If the operation of a power tool in a humid environment is unavoidable, use a
residual current circuit breaker. The use of a ground fault circuit interrupter
reduces the risk of electric shock.
23. If a vacuum cleaner and suction device are required, make sure they are
connected and used properly. The use of a vacuum cleaner can reduce dust-
related hazards.
7
Technical data
Model
DKB-352/S-PRO
DKB-502-/S-PRO
Item no.
6206
6211
Power
3300W
3500W
Voltage
230V
230V
Current
16A
16A
Weight
13.5kg / 13.7kg
14.0kg / 14.2kg
Frequency
50-60HZ
50-60HZ
Max drilling diameter
With stand
402mm (1. Aisle)
202mm (2. Aisle)
102 mm (3. Aisle)
502mm (1. Aisle)
302mm (2. Aisle)
162 mm (3. Aisle)
Speed
350/700/1100 1/min
250/500/750 1/min
Spindle thread
1-1/4" UNC & G1/2"
1-1/4" UNC & G1/2"
Compatible stands
KBS-352/M-PRO
KBS-502/M-PRO
Packing dimension
650x460x215mm
650x460x215mm
8
Product description
DKB-352/S-PRO and DKB-502/S-PRO
1. Display power range 5. LED display
2. Gear switch 1 / 2 / 3 6. On/Off switch
3. Carbon brushes 7. LED red and yellow light
4. Magnesium housing
The LED display shows the current temperature, amperage (A), voltage (V),
operating hours and warning indicators.
9
3
5
6
7
4
2
1
Use and care
Only use diamond core bits which are in a sharp and undamaged condition.
Properly maintained diamond core bits with sharp cutting segments do not get
bogged down so quickly and are easier to guide.
Use the power tool, accessories and drills, etc. in accordance with these operating
instructions, taking into account the working conditions and the work to be
performed. Using the power tool for operations other than its intended use could
result in a hazardous situation.
Have your power tool repaired only by qualified personnel and only with original
spare parts.
Precautions
1. ALWAYS wear hearing protection! When using drilling motors, the loud drilling
noise in the working area can cause hearing damage.
2. When drilling, keep a sufficient distance to the core drill and do not touch any
rotating parts. Protect the danger zone and keep children and other persons
away from it. Falling and splashing parts can cause injuries.
3. This diamond core drill is intended for professional use only and may only be
operated by trained personnel. The appropriate use of the core drill includes
drilling rock, reinforced concrete and masonry.Der Bohrmotor muss
regelmäßig (ca. alle 6 Monate) von einer zertifizierten Elektrofachkraft nach
VDE überprüft werden.
4. When used for overhead drilling, a functional water collection ring must be
used. Make sure that no water can get into the motor.
5. Switch off the core drill immediately if it stops for any reason. After you have
determined and eliminated the cause and performed a visual inspection of the
device and core bit, the core drill can be restarted.
10
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