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English
27
A different hole-starting aid is required for each core bit diameter.
1. Fit the hole-starting aid into the open end of the diamond core bit.
2. When you start drilling apply only light pressure until the core bit has centered itself. Then apply more
pressure. Drill a guide cut 3-5 mm deep.
3. Release the on/off switch to stop the product. Wait until the core bit comes to a complete stop.
4. Remove the hole-starting aid from the core bit.
5. Position the core bit in the guide cut, press the on/off switch and resume drilling.
7.3
Operating portable residual current device (PRCD)
WARNING
Risk of injury due to electric shock!
Do not continue operating the diamond core drilling machine if the
indicator on the ground fault circuit interrupter does not go out when the
0
or the
TEST
button is pressed.
▶
Have your diamond core drilling machine repaired by
Hilti
Service.
1. Plug the diamond core drilling machine’s mains plug into an earthed/grounded power outlet.
2. Press the "
I
" or "
RESET
" button on the portable residual current device (PRCD).
▶
The indicator lights up.
3. Press the "
0
" or "
TEST
" button on the portable residual current device (PRCD).
▶
The indicator goes out.
4. Press the "
I
" or "
RESET
" button on the portable residual current device (PRCD).
▶
The indicator lights up.
7.4
Dry-drilling with dust removal
Allowing dust to build up in quantity inside the core bit can cause imbalance.
When working, always route the suction hose to the rear and away from the diamond core drilling
machine, so that it cannot come into contact with the core bit.
▶
To prevent electrostatic effects, use an anti-static vacuum extractor.
7.4.1 Dry drilling with vacuum cleaner via built-in power outlet for electric devices
Use slotted core bits only when working without a dust removal system.
1. Secure the side handle in the desired position.
2. Optional: Install and use the two-part hole-starting aid. → page 26
3. Plug the diamond core drilling machine's supply cord into the power outlet of the vacuum extractor.
4. Plug the vacuum extractor’s supply cord into the power outlet.
5. When connected: Press the
Reset
switch or
I
button of the PRCD.
6. Center the diamond core drilling machine where the hole is to be drilled.
7. Press the on/off switch on the diamond core drilling machine.
The vacuum extractor will start after the power tool has started. When you switch off the power
tool the vacuum extractor will run on for a short time before switching itself off.
7.4.2 Dry-drilling with using a vacuum extractor without power outlet for power tools
Use slotted core bits only when working without a dust removal system.
1. Secure the side handle in the desired position.
2. Optional: Install and use the two-part hole-starting aid. → page 26
3. Plug the vacuum cleaner’s supply cord into the power outlet and switch the vacuum cleaner on.
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