Operation; Working With The Cutter; Care And Maintenance - Hilti DC180-S Operating Instructions Manual

Operation

On / off switch without locking function
Depending on national regulations, the diamond cutter
is equipped with an on / off switch without locking func-
tion or, alternatively, with a Tricontrol switch. The Tri-
control switch incorporates 3 functions:
– Release
– On / off switch
– Lock
Instantaneous operation (without locking function)
Switching on: Slide the switch forward without applying
pressure (unlock). Press the switch (switch on).
Switching off: Release the switch.
Sustained operation (Tricontrol switch)
Switching on: Slide the switch forward without applying
pressure (unlock). Press the switch (switch on) and,
while still applying pressure, slide the switch
forward.
Switching off: Press the switch and then release it.
Testing new grinding / cutting discs
Run the tool for at least 30 seconds under no load. If a
disc vibrates, it should not be used. Do not subject grind-
ing / cutting discs to impacts. Do not allow discs to come
into contact with grease.
Starting current regulator (230 V version)
The starting current required by the machine is several
times higher than the nominal current input. The start-
ing current regulator limits the current drawn by the
machine when starting, preventing the mains fuse from
tripping. It also ensures that the machine starts smooth-
ly without a jolt.
Side handle and hand guard
Always use the side handle
The side handle can be screwed on to the gearing
section in one of three positions.
Always use the hand guard (accessory) when work-
ing with the rubber backing pad.
The hand guard is secured to the gearing section by the
side handle.

Working with the cutter

Fig.
Do not try to force the disc into the material when cut-
ting and grinding. Simply move the disc in a reciprocat-
ing motion across the workpiece. Only moderate pres-
sure, appropriate to the material being cut or ground,
should be applied in the direction of advance.
The cutting direction is important. The disc must always
take a counter rotating approach to the material being
cut as the tool is advanced (up cut). Accordingly, never
14
Printed: 07.07.2013 | Doc-Nr: PUB / 5069473 / 000 / 00
move the tool in the opposite direction. The tool may oth-
erwise become uncontrollable, presenting a risk of the
disc jumping out of the cut.
Special discs should be used for non-ferrous metals (e.g.
aluminium, V2A).
Working with dry-cutting diamond discs
The DC180-S diamond cutter is particularly suitable for
use with dry-cutting diamond discs. A range of Hilti dia-
mond discs is available.
Dry-cutting diamond discs may overheat and thus suf-
fer damage when cutting particularly hard mineral mate-
rials such as concrete containing a high proportion of
hard aggregates (pebbles). A trail of sparks around the
perimeter of a diamond cutting disc is a clear indication
of this.
If this occurs, the cutting operation must be interrupted
and the diamond disc allowed to cool for a short time by
running the machine under no load. A drop in the rate of
cutting progress may indicate that the diamond segments
further
require sharpening (segments have become polished).
The segments can be resharpened by making a few cuts
in an abrasive material (a Hilti sharpening plate or abra-
sive sand-lime block).
Fig.
stone. This attachment prevents tilting of the disc rela-
tive to the workpiece.
Fig.
Disconnect the plug from the mains socket. Clean the
diamond cutter. The gear housing may be adjusted at
90° intervals to one of four positions, thus making it pos-
sible to use the cutter safely and without fatigue in any
working position (example: cutting using DC-D diamond
cutting discs).
Release and remove the four screws. Rotate the gear
housing through 90° without pulling it out towards the
front end. Insert and tighten the screws, taking care to
for safety's sake.
ensure that they are located correctly. Fit the side handle
in the threaded bushing
Rough grinding/smoothing
The best effect is achieved if the grinding disc is held at
an angle of approx. 30° to the work surface. Don't press
heavily when grinding otherwise the tool will suffer dam-
age, the disc will wear faster and the grinding perfor-
mance will decrease.

Care and maintenance

Always disconnect the plug from the mains socket before
carrying out any work on the tool.
The cooling slots in the motor housing must be kept
clean and unobstructed at all times. Dust should be
: Use of a cutting guide is mandatory for cutting
: Adjusting the position of the gear housing
Never use cutting discs for rough grinding / smooth-
ing.
.