Hilti TE MD20 MSHA Operating Instructions Manual

Operating instructions en

Mode d’emploi fr

Manual de instrucciones es

TE MD20
MSHA

Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 00Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 01

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Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 00Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 01

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Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 00Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 01

1

It is essential that the operating
instructions are read and under­stand before the tool is operated
for the first time.
Always keep these operating
instructions together with the tool.
Ensure that the operating instruc­tions are with the tool when it is
given to other persons.

ORIGINAL OPERATING INSTRUCTIONS

TE MD20 MSHA rotary hammer drill

1. General information

1.1 Indication of danger

-CAUTION-

This word is used to draw attention to a potentially dan­gerous situation which couldleadtominor personal injury
or damage to the equipment or other property.

1.2 Pictograms

Contents Page

1. General information 1

2. General safety rules 2

3. Specific safety rules and symbols 3

4. Functional description 5

5. Assembly 5

6. Operation 7

7. Care and maintenance 7

8. Accessories 7

9. Troubleshooting 8

10. Disposal 9

11. Manufacturer's warranty – tools 9

Operating controls  

햲 On / off switch
햳 Fault indicator (red LED)
햴 Ready and service indicator (green LED)

Component parts  

햷 Rotary hammer drill
햸 Hammering mechanism
햹 Electronics
햺 Gearing section
햻 Grip
햽 Cord and explosion-

proof plug

햾 Water leg
햿 Connecting pin

 These numbers refer to the corresponding illustra­tions. The illustrations can be found on the fold-outcov­er pages. Keep these pages open while studying the oper­ating instructions.
In these operating instructions, the designation "the tool"
always refers to the TE MD20 MSHA rotaryhammer drill.

If the tool is used in areas where there is risk of explo­sion, the information printed on a grey background in
these operating instructions must be observed. No
changes or modifications may be made to thetool with­out consent from the approval authority.

Location of identification data on the tool

The typedesignation and serial number can be found on
thetype plate on the tool. Make a note of thisdata in your
operating instructions and always refer to it when mak­ing an enquiry to your Hilti representative or service
department.

Type:

Serial no.:

Warning signs

General

warning

Warning:

electricity

Warning:

hot surface

Warning:

avoid hand

injuries

Obligation signs

Wear eye

protection

Wear ear

protection

Wear

protective

gloves

Wear safety

footwear

Wear a

safety

helmet

V volts Hz hertz
~ alternating current A amperes

Plug with approval for usein environments where there
is a risk of explosion as per 3.2 

Tool versions: TE MD20 MSHA

Plug and GFCI (no explosion protection!) 

Tool versions: TE MD20 GFCI

쎻

24

Plug

쎻

25

PRCD ground fault
circuit interrupter

헀 Water hose
헁 Water hose

protective sleeve

헂 Regulating valve
헃 Support base
헄 Carrying handle
헅 Connection end
헆 Drill bit
쎻

21

Drill steel

햵 Chuck
햶 Drill bit lock

쎻

26

TEST button

쎻

27

RESET button

쎻

28

Indicator lamp

Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 00Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 01

2

2. General safety rules

WARNING! Read and understand all instructions.

Failure to follow all instructions listed below may
result in electric shock, fire and/or serious personal
injury. SAVE THESE INSTRUCTIONS.

2.1 Work area

a) Keep your work area clean and well lit. Cluttered

benches and dark areas invite accidents.

b) Do not operate power tools in explosive atmos-

pheres, such as in the presence of flammable
liquids, gases or dust. Power tools create sparks

which may ignite the dust or fumes.

c) Keep bystanders, children and visitors away

while operating a power tool. Distractions can
cause you to lose control.

2.2 Electrical safety
a) Grounded tools must be plugged into an outlet

properly installed and grounded in accordance
with all codes and ordinances. Never remove
the grounding prong or modify the plug in any
way. Do not use any adaptor plugs. Check with a
qualified electrician if you are in doubt as to
whether the outlet is properly grounded. If the

tools should electrically malfunction or break
down, grounding provides a low-resistance path
to carry electricity away from the user.

b) Avoid body contact with grounded surfaces such

as pipes, radiators, ranges and refrigerators.

There is an increased risk of electric shock if your
body is grounded.

c) Don’t expose power tools to rain or wet condi-

tions. Water entering a power tool will increase
the risk of electric shock.

d) Do not abuse the cord. Never use the cord to

carry the tools or pull the plug from an outlet.
Keep cord away from heat, oil, sharp edges or
moving parts. Replace damaged cords immedi­ately. Damaged cords increase the risk of electric

shock.

e) When operating a power tool outside, use an

outdoor extension cord marked “W-A” or “W”.

These cords are rated for outdoor use and reduce
the risk of electric shock.

2.3 Personal safety
a) Stay alert, watch what you are doing and use

common sense when operating a power tool. Do
not use tool while tired or under the influence of
drugs, alcohol or medication. A moment of inat-

tention while operating power tools may result in
serious personal injury.

b) Dress properly. Do not wear loose clothing or

jewelry. Contain long hair. Keep your hair, cloth­ing and gloves away from moving parts. Loose

clothes, jewelry or long hair can be caught in
moving parts.

c) Avoid accidental starting. Be sure switch is off

before plugging in. Carrying tools with your fin-

ger on the switch or plugging in tools that have
the switch on invites accidents.

d) Remove adjusting keys or wrenches before turn-

ing the tool on. A wrench or a key that is left
attached to a rotating part of the tool may result in
personal injury.

e) Do not overreach. Keep proper footing and bal-

ance at all times. Proper footing and balance
enables better control of the power tool in unex­pected situations.

f) Use safety equipment. Always wear eye protec-

tion. Dust mask, non-skid safety shoes, hard hat
or hearing protection must be used for appropri­ate conditions.

2.4 Power tool use and care
a) Use clamps or other practical way to secure and

support the workpiece to a stable platform.

Holding the work by hand or against your body is
unstable and may lead to loss of control.

b) Do not force tool. Use the correct tool for your

application. The correct tool will do the job better
and safer at the rate for which it is designed.

c) Do not use tool if switch does not turn it on or

off. Any tool that cannot be controlled with the
switch is dangerous and must be repaired.

d) Disconnect the plug from the power source

before making any adjustments, changing
accessories, or storing the tool. Such preventive

safety measures reduce the risk of starting the
tool accidentally.

e) Store idle tools out of reach of children and oth-

er untrained persons. Tools are dangerous in the
hands of untrained users.

f) Maintain tools with care. Keep cutting tools

sharp and clean. Properly maintained tools with
sharp cutting edges are less likely to bind and are
easier to control.

g) Check for misalignment or binding of moving

parts, breakage of parts and any other condition
that may affect the tool’s operation. If damaged,
have the tool serviced before using. Many acci-

dents are caused by poorly maintained tools.

h) Use only accessories that are recommended by

the manufacturer for your model. Accessories
that may be suitable for one tool may become haz­ardous when used on another tool.

2.5 Service
a) Tool service must be performed only by quali-

fied repair personnel. Service or maintenance

performed by unqualified personnel could result in
a risk of injury.

b) When servicing a tool, use only identical

replacement parts. Follow instructions in the
Maintenance section of this manual. Use of

unauthorized parts or failure to follow Mainte­nance Instructions may create a risk of electric
shock or injury.

Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 00Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 01