VHF K4 edition Originalbetriebsanleitung Seite 25

S2. Open the collet chuck with the "Release tool" function
of DentalCNC and remove the tool from the spindle if
necessary.
M3. Insert the measuring pin into the collet chuck and keep
holding it with one hand. With the other hand put the
knurled nut to the spindle.
Fig. 24: Unscrewing the collet chuck
M4. Loosen the collet chuck with the knurled nut and
unscrew the collet chuck with your hand or with the
knurled nut.
M5. Remove the measuring pin from the collet chuck. Then
put it aside within reach together with the knurled nut.
M6. Clean the inner cone of the spindle with the cleaning
cone of the service set.
Fig. 25: Cleaning the inner cone of the spindle
M7. If there are parts of a broken tool in the collet chuck,
remove them with the collet chuck pin.
1.
2.
Original Operating Instructions: K4 edition
Document version: E – 02/2020
Machine maintenance and cleaning
M8. Clean the collet chuck with the brush of the service set.
1
Fig. 26: Cleaning the collet chuck
[1] Longitudinal slot
[2] Cleaning brush
NOTICE
Damaging of the spindle when using the wrong
grease or applying the grease in a wrong way
If you use grease that is unsuitable for the spindle or if grease
gets into the longitudinal slots of the collet chuck, the spindle
may get damaged.
h Ensure that no grease gets into the longitudinal slots of
the collet chuck.
h Only use a very small, about pinhead-size amount of the
grease.
h Only use the provided collet grease of the service set.
M9. Put a small amount of the collet grease on the index
finger and smear it with the thumb.
M10. Apply the smeared collet grease to the flanks of the
collet chuck.
Fig. 27: Greasing the collet chuck; surface to grease is marked in blue;
Slot that may not be greased is marked in red
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