4
3.6.1 Mechanical hazards
● Follow the instructions concerning care and mainte-
nance and change drill bits in good time.
The drill steel connection end and chuck are coordinat-
ed components that form an integral part of the explo-
sion protection system. Ensure that genuine Hilti insert
tools are used and that they are correctly fitted and
secured in the chuck.
3.6.2 Electrical hazards
● Ensure that the tool is earthed and that the earth con-
nection has been checked for correct functionality.
Operation of the tool without an earth connection pre-
sents a risk of fatal accident.
● Operate the tool only when connected to an electric
supply equipped with a pulse-controlled ground fault
circuit breaker (type A or B as per IEC 61008) or suit-
able PRCD with a sensitivity of max. 30 mA.
● Check the condition of the supply cord, extension cord
and plug connectors at regular intervals and replace
these items if damage is found.
● Check the condition of the tool and its accessories. Do
not operate the tool if it is incomplete or damaged or
if its operating controls do not function faultlessly.
● Do not use the supply cord or extenison cord for pur-
poses for which they were not intended. Never carry
the tool by the supply cord.
● Grip the plug and not the cable when pulling it out of
the socket.
● Do not expose the supply cord to heat, oil or sharp
edges.
● Do not touch the supply cord in the event of it becom-
ing damaged while working. Disconnect the supply
cord plug from the socket.
3.6.3 Thermal hazards
● Operate the tool only when water is flowing in order
to prevent overheating of the tool and drill bit.
3.7 Requirements to be met by users
● The tool is intended for professional use.
The tool may be operated, serviced and repaired only
by authorised, trained personnel. This personnel must
be informed of any special hazards that may be encoun-
tered.
● Always concentrate on the job you are doing. Proceed
carefully and do not use the tool if your full attention
is not on the job.
3.8 Personal protective equipment
The user and persons in the immediate vicinity must
wear suitable eye protection, a safety helmet, ear pro-
tection, protective gloves and safety footwear when the
tool is in use.
3.9 CAUTION STATEMENT
To retain "permissibility” of this equipment the follow-
ing conditions shall be satisfied:
● General Safety. Frequent inspection shall be made. All
electrical parts, including the portable cable and wiring,
shall be kept in a safe condition. Special efforts shall
be made to maintain cable routing paths free from
mud, rock and other debris that could eventually cause
cable damage. Cables shall be closely examined on a
regular basis and damaged cables or protective hose
conduits shall be replaced and the cause of the dam-
age identified and corrected before the equipment is
placed back into service. There shall be no openings
into the casings of the electrical parts. A permissible
distribution box shall be used for connection to the
power circuit unless connection is made in fresh intake
air. To maintain the overload protection of direct-cur-
rent machines, the ungrounded conductor of the
portable cable shall be connected to the proper ter-
minal. The machine frame shall be effectively ground-
ed. The power wires shall not be used for grounding
except in conjunction with diode(s) or equivalent. The
operating voltage shall match the voltage rating of the
motor(s).
● Servicing. Explosion-proof enclosures shall be restored
to the state of original safety with respect to all flame
arresting paths, lead entrances, etc. following disas-
sembly for repair or rebuilding, whether by the own-
er or an independent shop.
● Fastenings. All bolts, nuts, screws and other means
of fastening, and also threaded covers, shall be in
place, properly tightened and secured.
● Renewals and Repairs. Inspections, repairs or renewals
of electrical parts shall not be made unless the portable
cable is disconnected from the circuit furnishing pow-
er, locked, and tagged out. The cable shall not be con-
nected again until all parts are properly reassembled.
Special care shall be taken in making renewals or
repairs. Leave no parts off. Use replacement parts
exactly like those furnished by the manufacturer. When
any lead entrance is disturbed, the original leads or
exact duplicates thereof shall be used and stuffing
boxes shall be repacked in the approved manner. When
machine cables are replaced or otherwise disturbed
from their normal position, they shall be routed in the
same manner as they were when the machine was
shipped from the manufacturer. In addition, any clamps,
conduit or guards that were in place to prevent cable
damage shall be replaced.
Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 00Printed: 20.04.2017 | Doc-Nr: PUB / 5136192 / 000 / 01
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