EIBENSTOCK EBM 250/2 RP Manuel utilisateur

Original Instructions...……........................2 - 14

Original betjeningsvejledning………..……15 - 27

EBM 250/ 2 RP

ENGLISH

Important Instructions

Important instructions and warning notices are allegorized 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

sit

tions

In order to protect the user, take precautions.

During work you should wear ear protectors, goggles, dust mask, protective

gloves and sturdy work clothes!

Wear safety goggles

Wear safety helmet

Use ear protection

Wear protective gloves

Wear protective boots

Warning notices:

Warning of general danger

Warning of dangerous voltage

Warning of hot surface

Danger of being ripped or cut

Technical Data

Wet Diamond Core Drill EBM 250/2 RP

Rated voltage:

30 V ~

Power i

ut:

500 W

Rated c

rrent:

11.

5 A

Frequency: 50 / 60 Hz

Max. drilling diameter: 250 mm

Spindle connection: 1 ¼" UNC

Protection class: I

Degree of protection: IP 20

Net weight: about 10.5 kg

Interference suppression: EN 55014 and EN 61000

pee

Rated

peed

Max.

drilling diameter

360 rpm

250 mm

II 850 rpm 152 mm

Available accessories:

Item

Order

amon

d drill rig BST 152 with quick

change adapter

09631

000

Fastening set concrete / stone

35720

000

Copper rings fo

r easy removal

the

drill bi

35450

000

Adapter 1 ¼" i

½" i

35116

000

Quick action bracing unit

35730

000

Wate

r tan

k 10 l

metal

358

Wet/dry vacuum cleaner DSS

5 A

099

000

Wet/dry vacuum cleane

r DSS 25 M

09917000

Diamond drill bits

162

Drill bit

xtens

ions

Supply

Diamond core drill with ball valve and GARDENA connector, PRCD

protective switch, operating instructions, one spanner SW 32 and one

spanner SW 41 in a cardboard box

Application for Indented Purpose

The diamond core drill EBM 250/2 RP is indented for professional use and

may be used by instructed personnel only.

With the appropriate wet drill bits, the machine may be used for wet

drillings only, e.g. in concrete, stone and masonry.

It may be used with a suitable diamond drill rig only.

Safety Instructions

Safe work with the machine is only possible if you read

this operating instruction 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.

Save all warnings and instructions for future reference.

If the mains cable gets damaged or cut during use, do

not touch it, but instantly pull the plug out of the socket.

Never use the tool with a 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,

ecause

the

core may fa

dow

nward.

Pay attention that the tool is not exposed to direct rain.

Do not use the tool in an environment with danger of explosion.

Do not use the tool standing on a ladder.

Do not drill in asbestos-containing materials.

Never 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, e.g. 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.

Do not use the machine if a part of the housing is damaged or in case

of damages on the switch, the cable or plug.

During work, always lead the mains cable, extension cable and

extraction hose to the back away from the machine.

Power tools have to be inspected visually by a specialist in regular

intervals.

When using the drill, cooling water is never allowed to get into the

motor and all electrical parts.

Overhead-drillings only with suitable safety measures (water collection).

After an interruption of your work, only switch the machine on again

after having checked that the drill bit can be turned freely.

The tool may be used with the drill rig only.

Do not touch rotating parts.

Persons under 16 years of age are not allowed to use the tool.

During use, the user and other persons standing nearby have to wear

suitable ear protectors, goggles, helmets, protective gloves and boots.

Always work concentrated and carefully. Do not use the tool when

you are lacking in concentration.

For further safety instructions, please refer to the enclosure!

Fixing to Drill Rig

79,5

41,3

M8x16

Fasten the gearing foot of the

EBM 250/2 RP by means of four M 8

Allen screws to the drill rig.

The drill stand should have a good

stiffness and precise guide ways. The

spindle of the machine needs to go

parallel to the axle of the drill stand.

Use only fall-safe drill rigs.

It is advisable to use a water-collecting

ring.

The EBM 250/2 RP is made in protection class I. In order to protect the

operator, the machine can only be run with a GFCI. For this reason, the

machine is standard equipped with a PRCD switch integrated in the cord

which allows to connect the unit directly with a grounded socket.

Attention!

The PRCD-safety switch must not lay in water.

PRCD-safety switch must not be used to switch the tool

on and off.



Before you start working, check the proper functioning by

pressing the TEST button.

Electrical Connection

First, check the correspondence of voltage and frequency and compare it

with the data mentioned on the identification plate. Voltage differences

from + 6 % to – 10 % are allowed.

Use only 3-wire extension cable with protecting conductor and a sufficient

cross-section (min. 2.5 mm2). A cross-section which is too small could

lead to excessive power loss and to overheating of machine and cable.

The machine is equipped with a start-up speed limiter to prevent fast

expulsion fuses from unindented responding.

Water Connection

If the drill bit is not cooled enough with water, the diamond segments

could heat up and consequently get damaged and weakened. For this

reason, always make sure that the cooling system is not blocked.

In order to supply the machine with water, please proceed as follows:

Connect the tool to the water supply system or a water pressure vessel

using the GARDENA connector.

Always make sure that the machine only runs with enough clear water

as the seals get damaged when the machine is running dry.

Attention! The maximum water pressure should not exceed 3 bar!

Make sure that the segments are well cooled. If the drilling water is

clear, the segments are well cooled.

Overhead-drilling only with water collection ring.

In case of frost warning, drain the water system.

Changing Gears

The EBM 250/2 RP is equipped with a mechanical 2-speed oil-bath

gearbox.

Select the speed according to the drilling diameter (ref. to the tool's

identification plate).

Use the speed selection to change to the next higher or lower speed until

it locks. Change the speed only when the tool is not running; slightly turn

the working spindle to ease the speed change.

Warning!

Never apply force and change the gear only when the

machine is running down.

Never use tools, such as hammers or pliers to change

the gear.

Drill Bit Changing

Attention!

The machine is heavy and when you use or sharpen it, it might heat

up enormously. You could burn your hands or get cut or ripped by

the segments. Before the beginning of all works on the tool you have

to disconnect the plug from the mains. Always use protective gloves

when changing the drill bit.

The drill spindle has a right-hand thread.

To hold on spindle always use a jaw wrench SW 32.

Never remove the drill bit with impacts because this way the machine will

be damaged. With some waterproof grease, which is put on the drill bit

thread, and a copper ring between spindle and drill bit you can remove

the drill bit easier.

Drill Bits

Diamond drill bits with an 1 ¼" UNC female thread can be screwed

directly onto the working spindle.

For drill bits with R ½" male thread, adapters are available as accessories.

Always use drill bits which match the material which has to be drilled.

You can prevent the machine from damage if you only use drill bits which

are balanced and not deformed. Pay attention that diamond segments

have enough relief cut towards the drill bit body.

Using the Drilling Unit

In order to operate safely, please observe the following instructions:

Safety at work:

Make sure that your work place is free of anything that might disturb

your work.

Pay attention that your work-place is well-lit.

Make sure that you observe the conditions for the connection with the

power supply.

When laying the cables, make sure that it cannot be damaged by the

tool.

Make sure that you always can overlook the work place in a sufficient

way and that you always can reach all necessary control elements

and safety devices.

In order to avoid accidents, keep other persons away from your work

place.

Required space for operation and maintenance

If possible, make sure that you have enough free space for operation and

maintenance around the machine (about 2 metres). This way, you can

work safely and in case of operating trouble you can intervene

immediately.

Preparation

When you drill into blocs, make sure that the blocs are well anchored

and fixed.

Before drilling in supporting parts, make sure that you do not

disregard the statics. Observe the instructions of the experts who are

responsible for the design.

Make sure that you do not damage any gas mains, water mains or

electric cables while drilling.

Pay attention that you do not touch any metallic parts of the machine

when you drill walls and grounds where electric cables could lie

under water.

Pay attention that the drilling core does not hurt anybody or damaging

anything when it drops out.

If the drilling core might cause any damage when it drops out, use an

device that can hold back the drilling core.

Make sure that the drill bit is well fixed.

Only use tools which are suitable for the particular material.

Fastening of the Drill Rig

The diamond core drill EBM 250/2 RP may only be used mounted on a

drill rig. Since the drill rig is not included in the delivery, we point out some

important kinds of assembly.

For this purpose, please refer to the drill rig’s operating instructions.

Vacuum fastening:

Re. vacuum fastening, make sure that you have a sufficient vacuum

(minimum -0.8 bar). Make sure that the gaskets are not worn.

Attention! Do not use the vacuum fastening on the wall or overhead!

Do not forget that the levelling screw may be turned out only up to a

certain extend in order not to destroy the vacuum.

Dowel fastening:

The most common way of fastening is dowel fixing.

If possible, use metal dowels only. The dowel diameter must not be

smaller than 12 mm.

In order to fasten the drilling unit correctly, you need the fastening set

(order number 35720000).

Drill a hole with a diameter of 16 mm, 50 mm deep. Make sure that

the hole is free of dust.

Insert a dowel and open it with an expanding mandrel.

Screw the thread rod into the dowel.

Put the drilling unit with the deep hole in the base onto the thread rod.

Place the washer and screw the butterfly nut very tightly.

Adjust the drilling unit in the platform by using the four screws.

Drilling

Vertical drilling

Switch the PRCD on.

Open the water supply.

Switch the motor on without touching the surface with the drill bit.

Turn the handle to bring down the drill bit until it contacts the surface.

In order to reach an exact centring of the drill bit, keep the feed low

for the first centimeter of cutting depth.

Then you can drill faster. A too small drilling speed reduces the

power. On the other hand, when the drilling speed is too high, the

diamond segments quickly become blunt.

Angular drilling

Remove the screw in the foot base which arrests the column at 90°.

Loosen the two screws on the base of the column and turn the

column to the requested angle.

Retighten the screws again.

At the beginning, it is better to drill very slowy because the bit only

meshes with a fraction of its cutting area with the material. If you drill

too fast or with a pressure which is too high, the bit can be off centre.

You have hit reinforced iron when you recognise while drilling that the feed

rate gets very low, when you need to use more force, or when the water

leaking from the bore hole clearly shows some metal chips.

Reduce the pressure on the drill bit to cut through the reinforced iron

without any problems. You increase the pressure again when you have cut

through the reinforced iron.

Drill bit extension

If you have to drill deeper than the usable length of your drill bit is:

First, only drill to the point the usable length of the bit reaches.

Remove the bit and pull the centre core out of the hole without

moving the core drilling unit.

Push the drill bit back into the bore hole.

Screw an adequate extension between drill bit and motor. If the collet of

the drill bit is 1 ¼”, please do not forget the copper rings which make the

removal of the drill bit easier.

Overload Protection

In order to protect the operator, motor and drill bit, the EBM 250/2 RP is

equipped with a mechanical and electronic overload protection.

Mechanical: In the event of a sudden jamming of the drill bit, the

machine's kickback is limited to a reaction torque

controllable by the operator by means of a slip clutch.

Electronic: In case of overload due to large a feed force, the electronic

facility in the tool switch will deenergize the tool. After

discharge and reengagement one can drill again.

Safety Clutch

The safety 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 it in good condition, the clutch should slip for a very

short time (max. 2 seconds) in each case only. After excessive wearing

the clutch has to be renewed by an authorized service shop.

Fracture of Segments

If a diamond segment, parts of the reinforcement or something similar

breaks out, and consequently the drill bit seizes, stop working on this bore

and drill a hole with the same centre and a diameter being 15 – 20 mm

bigger.

Do not try to finish your work using another drill bit of the same

diameter!

Drill Bits

Diamond drill bits with a 1 ¼" UNC female thread can be screwed directly

onto the working spindle.

For drill bits with R ½" male thread, adapters are available as accessories.

Always use drill bits which match the material which has to be drilled.

You can prevent the machine from damage if you only use drill bits which

are balanced and not deformed. Pay attention that diamond segments

have enough relief cut towards the drill bit body.

After Drilling

When you have finished drilling:

Pull the drill bit out of the hole.

Stop the motor by using the motor switch and not the PRCD switch.

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