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3
6. Service
6.1
Tool service must be performed only by quali-
fied repair personnel.
Service or maintenance per-
formed by unqualified personnel could result in a risk
of injury.
6.2
When servicing a tool, use only identical
replacement parts. Follow instructions in the Main-
tenance section of this manual.
Use of unauthorized
parts or failure to follow Maintenance Instructions
may create a risk of electric shock or injury.
Specific safety rules and symbols
Use protective equipment.
Drilling slurry and recycled drilling water may
irritate the skin and eyes. Rinse with water imme-
diately after skin contact. If allowed to come into con-
tact with the eyes, rinse with plenty of water and con-
sult a doctor.
The water, container and hoses may become
very hot after long periods of use and present a risk of
burning or scalding.
Check the unit each time before use.
First check the condition of the supply cord with
GFCI residual current device (supplied with the
DD EC-1 diamond core drilling machine) and then
check the condition of the unit, including the supply
cord and the plug (an integral part of the hose set).
Do not operate the unit if any parts of it are found to
be damaged, if the unit is not complete or when the
operating controls cannot be operated faultlessly.
Read and understand also the instruction manual of
the DD EC-1.
Use the unit only for the purposes for which it is intended.
Apply a safe working method.
Always ensure that you have a safe stance and
that the unit is standing securely. On scaffolding or
similar platforms, the unit should be used without the
wheel assembly. Never stand on the unit. The wheel
assembly, housing and container grips should never
be used as attachment points for lifting by a crane
hook or similar means. If the unit is to be transported
by crane, the applicable safety regulations must be
observed.
Ensure that the unit, supply cord and hose set are posi-
tioned where they are free of obstructions. When work-
Always wear eye
protection.
Read the operating
instructions.
Always wear protective
gloves.
ing, always guide the hose set away from the dia-
mondcore drilling machine to the rear. Never carry
the unit by the supply cord or hose set and never pull
on these parts. Never drive over the hoses or supply
cord. Don’t unplug the unit by pulling on the supply
cord. Don’t expose the hoses or supply cord to heat,
oil or sharp edges. If the supply cord becomes dam-
aged while working, don’t touch it – unplug the mains
plug immediately and have the cord repaired in an
Hilti Service Center.
Never expose the plug connections for the unit to water.
If a plug interface has become wet, always discon-
nect the supply cord plug from the mains socket before
touching it and wiping it dry. Check that the pins of the
plug and the supply cord are clean and dry before they
are connected. Unplug the supply cord from the mains
socket before cleaning.
Avoid unintentional starting.
Always switch off the unit and unplug the
supply cord from the mains socket before removing
the container, when the unit is not in use (e.g. during
pauses between work), before cleaning and before
carrying out any maintenance.
Keep the unit in good condition.
Follow the instructions on care and maintenance.
Repairs to the unit may be carried out only by an autho-
rised electrical specialist using original Hilti spare
parts.
Failure to observe this point may result in dam-
age to the unit or present a risk of accident.
According-
ly, if necessary, have the unit repaired at a Hilti ser-
vice centre or authorised Hilti repair workshop.
In
accordance with national safety regulations, the safety
function of the earth / ground conductor must be checked
at regular intervals.
WARNING
"Risk of electric shock – This pump is supplied with a
grounding conductor and grounding-type attachment
plug. To reduce the risk of electric shock, be certain
that it is connected only to a properly grounded, ground-
ing-type receptacle."
Symbols used on the tool:
V
............................
volts
~
............................
alternating current
Hz
............................
hertz
W
............................
watts
A
............................
amperes
............................
protective grounding
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