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7.3.3 Adjusting the carriage block
NOTE
Adjustment of the carriage block plays an important role in core drilling operations. Unacceptable play
of the carriage block will cause a radial runout of the core bit which may lead to unsymmetrical contact
of the shank and/or jamming of the core bit while the operation. If the carriage block is too tight, the
resistance will increase and the carriage block does not slide smoothly along the column. Adjust the
carriage block a little tight and within the operator can reasonably feed the motor.
The carriage block must be adjusted if there is play between the carriage block and the column.
Follow the procedure below.
1) While holding the feed handle, loosen the stopper-knob.
2) Use a 6 mm Allen key to tighten / loosen hex. socket screws.
4 pieces of the hex. socket screws on the left side of the carriage block are for adjusting the play
of right and left.
3) Turn the feed handle back and forth while checking the play.
4) Use a 4 mm Allen key to tighten / loosen hex. socket screws.
2 pieces of the hex. socket screws on the back side of the carriage block are for adjusting the
play of back and forth.
5) Turn the feed handle back and forth while checking the play.
6) Tighten the stopper-knob.
7.4 Attaching a core bit
WARNING
Make sure the drill motor is switched off and disconnected from the power supply.
Never use the drill motor’s power to attach a core bit.
CAUTION
Wear protective gloves when changing a core bit. A core bit becomes hot as a result of use. It
may have sharp edges.
NOTE
Use core bits in conformity with EN13236 and/or EN12413.
For safety reason, each damaged (cracked) bit must be replaced.
Leaving a core bit attached to the spindle may cause adherence of the core bit to the spindle.
Using a quick disconnect tool such as the Slider may help to avoid such adherence.
Attach a core bit to the spindle firmly and securely by rotating the core bit.
Ensure that the end surface of the core bit is aligned with the surface of the spindle, so that the core bit
can not be tightened any further.
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