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5.1.2 Inserting the dry diamond core
drill bit on the core drill bit
shank
Select the dry diamond core drill bit according to
the required drillhole diameter and the material to
be drilled.
Inserting a dry diamond core drill bit on the
core drill bit shank without extraction dome
2
Screw a dry diamond core drill bit (6) onto the
core drill bit shaft (4). Hold the output shaft (1) in
position with an open-ended spanner size SW22
and tighten the dry diamond core drill bit (6) by
turning it clockwise with a second open-ended
spanner, size SW24.
Inserting a dry diamond core drill bit on the
core drill bit shank with extraction dome
3
If the dry diamond core drill bit (6) is used on the
core drill bit shank (4) with extraction dome (3), the
extraction dome (3) must also be pushed towards
the machine, so that the second open-ended
spanner size SW24 can grip the dry diamond core
drill bit (6); tighten by turning clockwise.
NOTE
Check the fit and condition of the dry diamond core
drill bit. A damaged dry diamond core drill bit may
not be used and must be replaced immediately.
5.1.3 Changing the centring drill bit
A blunt or broken off centring drill bit must be
replaced.
2
/
3
Push the centring drill bit (5) with the knurled
sleeve (2) towards the front and lock by turning the
knurled sleeve (2). Hold onto the output shaft (1)
with an open-ended spanner (size SW22), use
pliers to unscrew and remove the centring drill
bit (5) anti-clockwise and replace with a new
centring drill bit.
5.2 Connecting the dust extractor
Connecting the dust extractor to the core
drill bit shank with extraction dome
•
Check the dust extractor to ensure that it is
working properly.
•
4
Push the dust extractor hose (3) firmly onto
the nozzle (2) of the extraction dome (1).
NOTE
The nozzle (2) is designed to fit the suction hose
(3) of a
SENCO
special dust extractor.
4
When the suction hose (3) is cold, a good deal
of effort is required to push it onto the nozzle (2) of
the extraction dome (1).
Dust extraction for dry diamond core drill
bits with 1 ¼" connection
If dry diamond core drill bits with 1¼" connection are
used, the dust is extracted using the
SENCO
suction
rotor in combination with a
SENCO
special dust
extractor.
5.3 Switching on the dry diamond
drill and drilling
NOTE
The dry diamond core drill bit can be damaged
irreparably by overheating or jamming in the core
drill hole.
If harmful dust is produced during the work, a
suitable dust extractor must be connected to the
dry diamond drill (e.g.
SENCO
special dust
extractor).
Switch the drill's soft impact feature on or off,
depending on the material to be drilled:
•
Drilling
with soft impact
feature is
recommended for drilling in concrete and other
hard materials.
•
Drilling
without soft impact
feature is
recommended for drilling in abrasive materials
and materials with a lower hardness.
Switching on / off the soft impact feature
•
5
Switch on soft impact feature:
Press the side of the soft impact switch marked
green
(1).
•
6
Switch off soft impact feature:
Press the side of the soft impact switch marked
black
(2).
