Change Of Extruder Screw; Change Of Welding Nozzle - HSK HSK23 Bedienungsanleitung

Bedienungs- und Wartungsanleitung für Handschweißextruder Serie HSK23/HSK30

8.4 Change of extruder screw

Only possible with heated screw and therefore danger of injury by burning!
1. Heat up the machine for approx. 10 minutes
2. Empty the machine
3. Pull out mains plug
4. Remove the die (see chapter 8.3)
5. Loosen the bolt (Item no. 36)
6. Pull off the cylinder from the drive engine in the direction of extrusion.
7. Remove the Seeger circlip ring (item no. 16) by means of special nippers for
circlips, type i-2.
8. Now pull out the extruder screw with the thrust bearing to the rear side.
9. It is highly recommended, when changing the extruder screw to clean the
thrust bearing and to regrease it with "Shell Retinax LX2".
10. Now proceed with the re-assembly of the machine in the opposite order. When
mounting the thrust bearing special care must be taken to mount first the
bearing ring with the small boring, afterwards the ball bearing cage and finally
the bearing ring with the big boring. Please see to it that the feather key of the
driving engine and the groove of the extruder screw are in exact alignment.

8.5 Change of welding nozzle

The mounting or change of the welding nozzle may only be effected in heated
condition. Danger of injury by burning!
After loosening of the attachment screw (1) (see picture below)
pull off the welding nozzle with an appropriate pair of nippers, slightly turning.
The nippers may only have contact with the aluminium base plate (2) of the welding
nozzle, otherwise there is the danger of damaging the nozzle.
Please do not remove the welding shoe by pushing it off between heater band and
welding nozzle with a sharp object.
In addition to damaging the manual welding extruder or the welding nozzle, there is
the danger of electric shock.
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 HSK Kunststoff Schweißtechnik GmbH