Challenge Xtreme MD3215M Bedienungsanleitung

ORIGINAL INSTRUCTIONS

150mm

BENCH GRINDER

MD3215M

HELPLINE NO 08454 505299

ORIGINAL INSTRUCTIONS

GENERAL SAFETY

INSTRUCTIONS

INTRODUCTION

Thank you for purchasing a

CHALLENGE XTREME 150mm Bench

Grinder. We would like you to be

completely satisﬁed with your new

product and hope you get many

years of satisfaction out of this tool.

The bench grinder is intended for grinding

and sharpening metal tools such as drills,

chisels etc. and metal items. The device is not

intended for commercial use. Any other use or

modiﬁcation to the device shall be considered

as improper use and could give rise to

considerable dangers.

The manufacturer will not accept

liability for loss or damage arising

from improper use.

When using electric tools basic safety

precautions should always be

followed to reduce the risk of ﬁre,

electric shock and personal injury

including the following.

Read all these instructions before

attempting to operate this product

and save these instructions.

1. Keep work area clear

Cluttered areas and benches invite injuries.

2. Consider work area environment

Do not expose tools to rain.

Do not use tools in damp or wet locations.

Keep work area well lit.

Do not use tools in the presence of

ﬂammable liquids or gases.

3. Guard against electric shock

Avoid body contact with earthed or

grounded surfaces {e.g. pipes, radiators,

ranges, refrigerators).

4. Keep other persons away

Do not let persons, especially children, not

involved in the work touch the tool or the

extension cord and keep them away from

the work area.

5. Store idle tools

When not in use, tools should be stored in

a dry locked-up place, out of reach of

children.

6. Do not force the tool

It will do the job better and safer at the rate

for which it was intended.

7. Use the right tool

Do not force small tools to do the job of a

heavy duty tool.

Do not use tools for purposes not intended;

for example do not use circular saws to cut

tree limbs or logs.

8. Dress properly

Do not wear loose clothing or jewellery,

they can be caught in moving parts.

Non-skid footwear is recommended

when working outdoors.

Wear protective hair covering to contain

long hair.

9. Use protective equipment

Use safety glasses.

Use face or dust mask if working

operations create dust.

10. Do not abuse the cord

Never yank the cord to disconnect it from

the socket. Keep the cord away from heat,

oil and sharp edges.

11. Secure work

Where possible use damps or a vice to

hold the work. It is safer than using your

hand.

12. Do not overreach

Keep proper footing and balance at all

times.

HELPLINE NO 08454 505299

ORIGINAL INSTRUCTIONS

13. Maintain tools with care

Keep cutting tools sharp and clean for

better and safer performance.

Follow instruction for lubricating and

changing accessories.

Inspect tool cords periodically and if

damaged have them repaired by an

authorized service facility.

Inspect extension cords periodically and

replace if damaged.

Keep handles dry, clean and free from

oil and grease.

14. Disconnect tools

When not in use, before servicing and

when changing accessories such as

blades, bits and cutters, disconnect tools

from the power supply.

15. Remove adjusting keys and

wrenches

Form the habit of checking to see that keys

and adjusting wrenches are removed from

the tool before turning it on.

16. Avoid unintentional starting

Ensure switch is in “off” position when

plugging in.

17. Use outdoor extension leads

When the tool is used outdoors, use only

extension cords intended for outdoor use

and so marked.

18. Stay alert

Watch what you are doing, use common

sense and do not operate the tool when

you are tired.

19. Check damaged parts

Before further use of tool, it should be

carefully checked to determine that it

will operate properly and perform its

intended function.

Check for alignment of moving parts,

binding of moving parts, breakage of

parts, mounting and any other conditions

that may affect its operation.

A guard or other part that is damaged

should be properly repaired or replaced

by an authorized service centre unless

otherwise indicated in this instruction

manual.

Have defective switches replaced by an

authorized service centre.

20. Warning

The use of any accessory or attachment

other than one recommended in this

instruction manual may present a risk of

personal injury.

21. Have your tool repaired by

a qualiﬁed person

This electric tool complies with the relevant

safety rules. Repairs should only be carried

out by qualiﬁed persons using original

spare parts, otherwise this may result in

considerable danger to the user.

22. If the replacement of the supply

cord is necessary, this has to be

done by the manufacturer or his

agent in order to avoid a safety

hazard.

ADDITIONAL SAFETY RULES

Do not use damaged or misshapen grinding

wheels or brushes;

Use only grinding wheels recommended by the

manufacturer which have a marked speed

equal to or greater than the speed marked on

the nameplate of the tool;

Adjust the spark arrestor frequently so as to

compensate for wear of the wheel, keep the

distance between the spark arrestor and the

wheel as small as possible and in any case not

greater than 2mm;

HELPLINE NO 08454 505299

ORIGINAL INSTRUCTIONS

8. Periodically check that all nuts, bolts and

other ﬁxings are properly tightened.

9. Do not use a wheel that has received a

blow, especially to the side of the wheel.

10. Replace a cracked or suspect wheel.

11. Always allow a new wheel to run for a

few minutes at full speed before using it.

Stand to one side at start up.

12. Check that the wheel rotates freely each

time before start up.

13. Do not use the grinder unless all the

guards are properly ﬁtted and secure.

14. Check that the tool rests are properly

adjusted before commencing use.

15. Do not overload the grinder. Allow the

grinder to run at full speed, or close to

full speed during use.

16. Never apply excessive pressure to the

wheel. It might shatter causing personal

injury.

17. Make sure that the wheel is not in

contact with the work when you start the

grinder.

18. When using the grinder, use safety

equipment including safety goggles or

shield, ear protection, dust mask and

protective clothing including safety

gloves.

19. The adjustment of the spark arrestor

shall be made frequently ,so as to

compensate the wear of the wheel,

keeping the distance between the guard

and the wheel as small as possible, but

in any case not greater than 2 mm.

20. The adjustment of the work rest shall be

done gradually so as to compensate the

wear of the wheel, keeping the distance

between the work rest and the wheel as

small as possible, but in any case not

greater than 2 mm.

Instruction for the safe use, handling and

storage of abrasive wheels taking into

account the requirements of the CEN standard

for abrasive products for the type of tool

covered by this standard. It is assumed that

wheels will not be dressed.

If wheel dressing is intended then suitable

precautions should be taken;

If the grinder is intended to be bolted down,

an instruction requesting it to be secured to

a suitable work surface.

For bench grinders and combined bench

grinders equipped with straight-sided

ﬂanges, the recommended values of the

thickness T and the diameter of the hole

see the technical data;

For combined bench grinders, to always

keep the brush assembled on the spindle

in order to limit the risk of contact with the

rotating spindle.

ADDITIONAL SAFETY

INSTRUCTIONS FOR YOUR

BENCH GRINDERS

1. Always remove the plug from the mains

socket before making any adjustments

or maintenance, including changing the

wheel.

2. Always wear eye protection and check

that the eye shields on the grinder are

properly adjusted.

3. Always turn the grinder off when it is not

in use and never leave it unattended

without ﬁrst switching off and removing

the power plug. Never leave the grinder

until the grinding wheels have come to a

complete stop.

4. Make sure that any replacement wheel

is rated at 3000RPM or higher.

5. Do not let anyone under 18 years operate

this tool.

6. Rags, cloths, cord, string and the like

should never be left around the work area.

7. If you are interrupted when operating the

tool, complete the process and switch off

before looking up.

HELPLINE NO 08454 505299

ORIGINAL INSTRUCTIONS

SYMBOLS

To reduce the risk of injury,

user must read instruction

manual

Warning

Wear eye protection

Wear ear protection

Wear dust mask

Waste electrical products

should not be disposed

of with household waste.

Please recycle where facilities

exist. Check with your local

authorities or retailer for

recycling advice.

HELPLINE NO 08454 505299

ORIGINAL INSTRUCTIONS

1 72

5 6

HELPLINE NO 08454 505299

ORIGINAL INSTRUCTIONS

COMPONENT LIST

1. Adjusting guard plate

2. Eye shield

3. Grinding wheel

4. Work rest

5. Work rest ﬁxing knob

6. On/Off switch

7. Wheel guard

Not all the accessories illustrated or described are included in standarddelivery.

TECHNICAL DATA

Rated voltage 230-240V~50Hz

Rated power 150W (S2: 30min)

Rated noload speed 2950/min

Wheel size Ø150 x 16 x Ø12.7mm (36/60grit)

Weight 5.5 kg

ACCESSORIES

Work rest 2set

Eye shields 2set

Discs (preassembled) 2pcs

We recommend that you purchase your accessories from the same store that sold you the

tool. Use good quality accessories markedwithawell-known brandname. Choose the type

according to the work you intend to undertake. Refer to the accessory packaging for further

details. Store personnel can assist you and offer advice.

HELPLINE NO 08454 505299

ORIGINAL INSTRUCTIONS

2. SETT ING OF TOOL REST AND

SPARK ARRESTER BRACKET

(See Fig. C, D)

The tool rest and spark protection

assembly’s spark arrester bracket have to

be set from time to time to compensate for

grinding wheel wear. The gap between tool

rest and wheel should not be more than

2mm and not more than 2mm between

wheel and spark arrester bracket.

3. COMMISSIONING

This double bench grinder is used for rough

grinding. Please note that it is not intended

for continuous operation. To prevent

possible overloading/overheating it should

not be operated for more than 15 - 30

minutes at a time. Let grinder cool down

before operating again.

Apply moderate pressure when holding

the workpiece against the grinding wheel.

Remember that the metal heats up by the

grinding. The workpiece should therefore

regularly cooled by submerging it in cold

water. The dry grinding wheels of this bench

grinder are suitable for rough grinding only.

Before using the tool, read the

instruction book carefully.

OPERATING INSTRUCTIONS

For reasons of packing the spark protection

assembly is not factory installed and needs

to be user installed before operation of the

machine. Fig. A shows the components of

the spark protection assembly and how they

are installed to the grinding wheel cover on

the right hand side.

Installation to the left hand side wheel cover

is similar.

1. INSTALLATION OF SPARK

PROTECTION ASSEMBLY

(See Fig. A, B)

Fig. A

Fig. B

a: head screw

b: hexagon nut

c: lock washer

d: head bolt

Fig. C

Fig. D

HELPLINE NO 08454 505299

ORIGINAL INSTRUCTIONS

defects or cracks. For the resonance test,

let the wheel hang from a piece of string

and tap lightly with a screwdriver handle or

similar (no metal!). If the sound is not clear,

but rather dull and hollow the wheel is likely

to be damaged and should not be used. The

grinding wheel should slide onto the arbor

easily.

Forcing it on the arbor, e.g. by striking with

a hammer, may break the wheel and is

not permissible for safety reasons. For the

same reason the drilling out of too small an

arbor bore is not permitted.

After the new wheel is mounted it should

be left running idle for at least 5 minutes.

Screen off workplace to prevent damage in

case the wheel breaks and stay out of

the danger zone.

8. CHANGING THE GRINDING

WHEEL (See Fig. F)

If the wheel needs replacement because it

is worn down or you want to use a different

type of grinding wheel, the

mounted wheel is to be removed.

Please make sure that the hexagon nut

on the left side of the machine has a lefthanded

thread, i.e. must be turned in a

clockwise direction to undo.

Installation to the right hand side wheel is

similar. (See Fig. F)

4. SIZE OF PART TO BE MACHINED

The part to be machined must at least

be large enough to hold securely in both

hands.

A larger work piece must also be able to

be held securely in and must not slip from

the work piece support during the grinding

process. When selecting the size of the

work pieces, please bear in mind the

grinding capacity of your grinding machine.

5. DRILL GRINDING

The work piece support on the right grinding

wheel is ﬁtted with a trough for drill grinding.

After switching on the double grinding

machine hold the drill to be ground with both

hands and push it into the trough. Then

carefully guide the tip of the drill towards

the grinding wheel and slowly turn the drill

throughout the entire grinding process.

6. SELECTING A SUITABLE

GRINDING WHEEL

This double bench grinder is factory

ﬁtted with two different normal corundum

grinding wheels. On one side a wheel with

a coarse grit is mounted, on the other side

a ﬁne grit grinding wheel. As a rule, the

bulk of the arising grinding works such as

the grinding of various axes, drill bits and

screw drivers can be accomplished with this

grinding wheel. For other jobs, especially

the sharpening of knifes as well as the

machining of hardened steel, a suitable

grinding wheel according to the table should

be selected. Please keep in mind that there

is no grinding wheel type suitable for all

different requirements and the choice of the

right grinding wheel is critical for the result

of your work.

7. GRINDING WHEEL CHECK

(See Fig. E)

Before a new grinding wheel is mounted it

should be subjected to a visual inspection

and a resonance test, to detect any possible

Fig. E

HELPLINE NO 08454 505299

ORIGINAL INSTRUCTIONS

MAINTENANCE

Remove the plug from the socket

before carrying out any adjustment,

servicing or maintenance.

There are no user serviceable parts in your

power tool. Never use water or chemical

cleaners to clean your power tool. Wipe

clean with a dry cloth. Always store your

power tool in a dry place. Keep the motor

ventilation slots clean. Keep all working

controls free of dust. Occasionally you may

see sparks through the ventilation slots.

This is normal and will not damage your

power tool.

Fig. F

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