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6. Connect a wet-type industrial vacuum extractor to the water collector or establish a hose connection
through which the water can drain away.
6
Types of work
6.1
Setting the depth gage (accessory)
1. Turn the hand wheel until the core bit is in contact with the base material.
2. Set the desired drilling depth by adjusting the distance between the depth gage and the carriage.
3. Lock the depth gage in position.
6.2
Fitting the diamond core bit (BL chuck)
DANGER
Risk of injury Fragments of the workpiece or of broken insert tools may be ejected and cause injury beyond
the immediate area of operation.
▶ Do not use damaged insert tools. Check the insert tools for chipping, cracks, or heavy wear each time
before use.
CAUTION
Risk of injury when changing the tool! The tool becomes hot as a result of use. It may have sharp edges.
▶ Always wear protective gloves when changing the tool.
Diamond core bits must be replaced when the cutting performance and/or rate of drilling progress
drops significantly. This generally is the case when the diamond segments reach a height of less than
2 mm (1/16 in).
1. Lock the carriage on the rail with the carriage lock. Check to ensure that it is securely fastened.
2. Open the chuck by turning it in the direction of the "Open brackets" symbol.
3. From below, push the connection end of the diamond core bit into the chuck on the diamond core drilling
machine, making sure that the teeth engage.
4. Close the chuck by turning it in the direction of the "Closed brackets" symbol.
5. Check that the diamond core bit is seated securely in the chuck.
6.3
Fitting the diamond core bit with an alternative type of chuck
1. Lock the drive spindle with a suitable open-end wrench.
2. Tighten the core bit with a suitable open-end wrench.
6.4
Selecting the speed
Press the switch only when the tool is stationary.
1. Set the selector switch to suit the diameter of the core bit used.
2. Turn the switch to the recommended setting while turning the core bit by hand at the same time.
6.5
Portable residual current device (PRCD)
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 PRCD.
▶ The indicator lights up.
3. Press the "0" or "TEST" button on the PRCD.
▶ The indicator goes out.
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