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EN
5.2 Dry drilling
5.2.1 Inserting the centring pin
9
The centring pin (1) can only be used with
diamond core drill bits, which are screwed onto the
1¼″ UNC external thread of the output shaft.
•
10
Select a centring wingnut (3) according
to the diamond core drill bit diameter and
push onto the centring pin (1) up to the lock
washer (2).
•
11
Push the centring pin (2) with the centring
wingnut (3) through the diamond core drill bit (1)
and into the output shaft.
•
12
Correct fit of the centring pin (3) with the
centring wing nut (2) in the diamond core drill
bit (1).
5.2.2 Connect dust extractor to the
extraction tube
•
Check the dust extractor to ensure that it is
working properly.
•
13
Push the dust extractor hose (3) firmly onto
the nozzle (2) of the extraction tube (1).
NOTE
13
The socket (2) is designed to be a suitable fit
for the extraction hose (3) of a dust extractor.
13
When the extraction hose (3) is cold a good
deal of effort is required to push it onto the
nozzle (2) of the extraction tube (1).
5.2.3 Switching on the diamond drill
and drilling
•
Before starting up the diamond drill, check all
the points described in the “Before starting
work” chapter (see page 38).
•
3
Test the PRCD switch and switch on (see
page 38).
5
Operation and Control –
Hand-Held Operation
The additional handle must be tightly screwed
onto the drill for hand-held drilling.
5.1 Fitting or replacing the diamond
drill bit
DANGER
Risk of injury due to electric shock.
Î
Disconnect the mains plug before carrying out
any work on the diamond drill.
CAUTION
Risk of injury due to hot drill bits.
Î
The drill bits fitted can get hot if used for
a lengthy time. Wear safety gloves when
changing the drill bits or allow the drill bits to
cool first.
NOTE
If the diamond drill is used on a drill stand, the
machine must be fixed in the motor collar before
the diamond core drill bit is fitted.
•
8
Diamond core drill bits (2) / (3) are screwed
onto the G½″ internal thread or 1¼″ UNC
external thread of the output shaft (1) depending
on the drilling diameter.
•
8
Use an open-ended spanner SW36 to hold
the output shaft tight (1).
•
8
Tighten the diamond core drill bit (2) using an
open-ended spanner SW41.
•
8
Tighten the diamond core drill bit (3) using an
open-end spanner SW22 or SW24.
NOTE
Check the fit and condition of the diamond core
drill bit. A damaged diamond core drill bit may not
be used and must be replaced immediately.
Summary of Contents for BDB 825
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