HYCON HCD25-100 User manual

Hydraulic Core Drill
HCD25-100
HCD50-200
From serial No. 0152
Revised 30.08.2011
Prior to Operation
We thank you for choosing a
YCON core drill.
To ensure smooth operation
and long-lasting performance
of your new core drill, we re-
commend you to study this
operating manual carefully and
pay special attention to the
chapters about
Safety and Service
Precautions
We hope you will be satisfied
with your new YCON core
drill.
Best regards
YCON A/S
HYCON A/S
Juelstrupparken 11
DK-9530 Støvring
Denmark
Tel: [phone]
Fax: [phone]
Mail [email protected]k
www.hycon.dk

1
Contents
Page
Safety Precautions .............................................................................................. 2
Oil Flow and Pressure ......................................................................................... 4
Useful information regarding the use of core drill ................................................. 4
Starting Instructions ........................................................................................... 6
Technical Data ................................................................................................... 7
Performance Chart ............................................................................................. 8
Dimensions ........................................................................................................ 9
Connection to ydraulic Power Sources .............................................................. 10
Service and Maintenance ................................................................................... 11
Oil Types .......................................................................................................... 11
EC-Declaration of Conformity ............................................................................ 12
Warranty Terms ............................................................................................... 13
Spare Parts List ................................................................................................ 14

2
Safety Precautions
•Read the core drill and power source operating manuals prior to use.
•Only use the core drill in accordance with the local working regulations on al-
lowed working time
•Check the oil supply to the core drill. The oil supply may not exceed 20
l.p.m./max. 170 bar. Please refer to page 4.
•Make sure that the core bit is firmly fastened
•For handheld drilling, always use core bits approved for this purpose
•The YCON core drill is supplied with a trigger lock. This may only be used when
drilling in a rig.
•The core drill has an automatic integrated security that makes the core drill stop
if the core bit jams. owever, in case of jamming, always loosen the core bit from
the material, before you start drilling again. The integrated security is set from
the factory and may not be disturbed.
•Start the core drill just before you start drilling, and stop it once the drilling is
done. Do not let the core drill run freely in the air.
•In case of horizontal drilling or drilling above the head, always be aware of
material falling down.
•A fine jet of oil at pressure can penetrate the skin. It is therefore important never
to use your fingers to check for oil leaks and never to hold your face close to su-
spected leaks – use a piece of cardboard instead. If oil has penetrated the skin,
you should get medical treatment immediately.
•Never leave the core drill when connected to the powerpack.
•Always use approved hoses. Contact your dealer, if necessary. Mount the hoses
correctly so that the core drill rotates in the right direction (clockwise).
•The operator must pay extra attention and show caution when working in difficult
working areas, such as slopes and other dangerous nature of the ground. Do not
reach too far with the core drill, but always maintain a good footing and keep
your balance.
•The operator must be properly trained in using the core drill or under supervision
of a qualified instructor.

3
•The operator must always use protective goggles, earplugs, hard hat and shoes
when operating the core drill.
•Never use the core drill close to electric cables. Prior to operation, check whether
there are hidden or buried cables.
•Never wear loose clothing as it may get entangled in the moving parts of the core
drill.
•Inspection or cleaning of the core drill, change of core bit or disconnection of
hoses may never be done while the core drill is connected to the powerpack, as
unintentional activation of the core drill can cause severe damage.
•Always connect hoses to the core drill before starting the powerpack. Be sure that
all couplings are tight.
•The core drill may not be operated if the oil temperature is above 70 C°.
Operation at higher temperatures may result in the core drill getting warmer than
normal and the operator risks getting burnt on it.
•To avoid all personal injury and damage to material, all repair, maintenance and
service work must be carried out by authorized or properly trained persons only.
•A core drill not in use should always be kept in a safe and dry place.
•Always make sure that the core drill labels and warning signs are legible.
•Always use hoses, couplings and spares as such recommend by YCON A/S.
•Repairs may only be carried out by experienced personnel.
•Make sure that all couplings are cleaned before connection.
•Always disconnect the hydraulic circuit before connecting or disconnecting the
core drill. If this is not done, there is a risk of damage to the quick release coup-
lings or the hydraulic system getting overheated.
IMPORTANT
GTIGT

4
Oil Flow and Pressure
Your new YCON core drill is designed for a certain oil flow, working pressure and
maximum pressure. A too high oil flow and/or a too high pressure results in overload
of the core drill, meaning that the lifetime of your new YCON tool will not be as
expected, and that your service and repair costs will be too high.
It is important to check that the core drill is not supplied with an oil flow beyond its
design capacity, that the working pressure is correct and that the maximum allowed
pressure is not exceeded.
On page 7 you will find the technical data, and on page 10 there is a guide to
connection to hydraulic power sources and how to ensure that the core drill is not
overloaded.
seful Information Regarding the se of Core Drill
The YCON core drill is a small and compact tool with a high performance. There is
no other core drill on the market with a higher performance in relation to size.
It is the perfect tool for drilling jobs in all kinds of concrete, brick wall, asphalt etc.
The core drill can be mounted in a rig, but the great advantage of this tool is that all
drilling jobs can be done by hand. This is possible due to an automatic security
function, which makes the core drill stop immediately if the core bit jams.
The core drill has two handles, and with an 360° infinitely variable adjustment of the
front handle, optimum operator comfort is achieved.
The core drill can drill holes from ø50 mm to ø350 mm. Drilling jobs beyond ø200
mm are for experienced users only.
The rotary speed is variable by means of the lever, which facilitates the drilling start.
As handheld drilling is possible for all jobs, the operator saves a lot of time as he
does not have to mount a drilling rig prior to operation. For rig drilling, the YCON
core drill can be mounted in the most common drilling rigs (ø60 mm).
The core drill is unaffected by water and can be operated in all environments – also
underwater drilling. This means that there is no shock hazard in excavations etc., as
is the case with electric core drills.
The core drill can also be connected to excavators and other machines. We re-
commend the use of a YCON oil flow divider to protect the core drill against a too
high oil supply, a too high pressure and backwards rotation. Please refer to page 10.

5
As standard the core drill comes with 1/2" thread and with the adaptor 5/4” thread.
This way the core drill can also be used with a 1/2” drill chuck for other drilling jobs,
where a percussive function is not applicable.
The core drill is designed for dry as well as wet drilling. The best result is achieved
by means of wet drilling, as this cools the core bit and removes the bore meal, thus
reducing the wear on the core bit as much as possible.
The utility values of your YCON core drill are numerous, and we are confident that
you will be very pleased with your investment.

6
Starting Instructions
START
•Mount a core bit.
•Connect hoses – clean couplings before connection. Connect water supply.
•Set the power source on ”ON”.
•Get a good footing, adjust the front handle and lock it. Keep it locked during
drilling.
•Press the trigger lever against the handle and start the core drill.
•In case of handheld drilling, start by holding the core bit at an oblique angle
towards the material, so that only 1/5 of the core bit diameter cuts the
material. When gradually a groove is cut in the material, slowly move the core
bit to drilling with the whole diameter. Once a groove is cut on the entire
diameter, press the core bit against the material and drill through.
•In case of drilling in a rig, press the core bit slowly against the material, and
once a groove has been cut on the entire diameter, increase the pressure on
the core bit and keep it stable until the drilling is done.
•A constant and sufficient water supply is important, as it cools the core bit,
removes the bore meal and guarantees the best result with as little wear on
the core bit as possible.
STOP
•Remove the core bit from the material and let go of the trigger lever.
•Set the power source on ”OFF”, and disconnect the water supply.

7
Technical Data
HCD
25
-
100
HCD50
-
200
Weight w/o hoses,
core bit and adaptor
7.6 kg
7.6 kg
Oil supply
20 l.p.m.
20 l.p.m.
Working pressure nominal
100 bar
100 bar
Pressure relief valve in
power source
Max. 170 bar
Max. 170 bar
Max. return pressure
40 bar
40 bar
Max. oil temperature
70° C
70° C
Rotary speed at 20 l.p.m.
Torque
1500 r.p.m.
20 Nm
600 r.p.m.
48 Nm
Sound pressure level 1 m L
PA
85 dB
84 dB
Vibration level
‹ 2.5 m/s²
‹ 2.5 m/s²
Core bit size
ø
25
-
ø100 mm
ø50
-
ø200 mm
Up to ø350 mm for
the experienced user
Thread
core bit
:
External G ½” or
internal 1 ¼” – 7 UNC
Thread
core bit
:
External G ½” or
internal 1 ¼” – 7 UNC
Necessary cooling capacity
on power source
1 kW
1 kW

8
Performance Chart
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
20m 25m 30m 40m 50m 60m 70m 80m 90m 100m 110m 120m 130m 140m
3/4" hose 5/8" hose 1/2" hose 3/8" hose
HCD50-200 Core Drill
Performance loss with different lengths of hoses:
Hose length
Pressure from power pack: 150 bar. Flow: 20 l.p.m. zero elevation 2 set couplings per 10 m hose.
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
15m 20m 25m 30m 35m 40m 45m 50m 55m 60m 65m 70m 75m 80m
3/4" hose 5/8" hose 1/2" hose 3/8" hose
HCD25-100 Core Drill
Performance loss with different lengths of hoses:
Hose length
Pressure from power pack: 150 bar. Flow: 20 l.p.m. zero elevation 2 set couplings per 10 m hose.

9
Dimensions

10
Connection to Hydraulic Power Sources
The core drill can be connected to various hydraulic power sources, such as excava-
tors, trucks, loaders, tractors etc., and of course YCON powerpacks, the design of
which ensures your new YCON core drill the absolute best working conditions.
It is important that the core drill is not subjected to an oil flow and a working pres-
sure beyond its design capability. Please refer to the ID-tag on the core drill in case
of doubt.
Check the oil flow and the working pressure by means of test equipment. The test
equipment should comprise a pressure gauge, a flow meter and a valve for adjust-
ment of pressure.
Make sure that:
•the oil flow is not too high
•the working pressure is not too high
•the return pressure is not too high
•the pressure relief valve is not set higher than 170 bar
•the internal diameter of the hoses is sufficient (min. 3/8”)
•all couplings are in order
•the power source is equipped with an oil filter of min. 25 Micron
oses with too small internal diameter and/or defect couplings cause the core drill to
work with incorrect working pressure.
Your dealer can help you check this.
If the output of the power source is too high:
•the power source must be adjusted to correct output
•or you can choose to mount a YCON oil flow divider to protect the core drill
against overload
•or you can choose one of our YCON powerpacks. Your dealer can guide you
in choosing the right powerpack.
In case of doubt, please contact your dealer or YCON A/S.

11
Service and Maintenance
Service/Maintenance Daily Weekly Yearly
Check couplings and clean
carefully X
Check hoses X
Check bearing for clearance X
NB. At service/repair it is important to mount the hoses correctly.
Oil Types
The YCON core drill uses standard hydraulic oil, i.e. all types of mineral oil and
biodegradable oil, which comply with the following values:
Recommended viscosity
20
-
40 cSt
Permitted viscosity
15
-
1000 cSt
Viscosity index
Min. 100
Temperature area
-
20° to +70° C
If using biodegradable oil, we recommend the use of oil based on rape. Other types
of oil can be aggressive towards the seals. If you are in doubt, please ask your
dealer.

12
EC-Declaration of Conformity
From Serial No.
We hereby confirm that core drills HCD25-100 and HCD 50-200 0152
are manufactured in conformity with EC-directive 2006/42/EC.
YCON A/S
Juelstrupparken 11
DK-9530 Støvring
Denmark
enrik Steen
General Manager
01.09.2003
HYCON A/S
Juelstrupparken 11
DK-9530 Støvring
Denmark
Tel: [phone]
Fax: [phone]
Mail [email protected]
www.hycon.dk

13
Warranty Terms
We grant 12 months warranty from the first date of operation – however, not more
than 18 months from the date of delivery.
The warranty applies to faults that can be related to construction and production
errors.
Faults caused by incorrect operation, incorrect handling, lack of maintenance or the
like, will not be accepted as warranty.
The warranty covers the parts necessary for repair and the suggested average time
needed for repair.
For further warranty details, please contact your local dealer.