Maintenance Works; Change Of Die - HSK HSK23 Bedienungsanleitung

Bedienungs- und Wartungsanleitung für Handschweißextruder Serie HSK23/HSK30

8.2 Maintenance works

After 300 service hours or after 6 months at the latest the machine must be
thoroughly cleaned, all gear parts and ball bearings washed with solvents and
provided with fresh grease. The space between inner and outer ring of ball bearings
may only be filled with grease at 1/3 to prevent bearings running hot. Only use
special grease
After 150 service hours the thrust bearing (item no. 15) of the extruder screw must be
dismounted, cleaned and provided with fresh grease. For the lubrication of the thrust
bearing only use
We recommend further eliminating eventually sticking deposits from the screw, for
ex. by means of a brass brush. When cleaning the screw please take special care
not to damage the chrome layer!
Also retighten all screw connections. Missing or faulty parts must be replaced
immediately.
Replace carbon brushes not later than when reduced to 7 mm length. We
recommend to control the carbon brushes regularly every two weeks, as abrasion of
these brushes heavily depends on the prevailing operating conditions.
After insertion of new brushes it has to be checked whether they can be easily
moved in their holding device.
If, even after insertion of now carbon brushes, a strong commutator sparking occurs
within the collector area, the collector will have to be drawn off. Otherwise there is the
danger of heavy wear on the carbon brushes.

8.3 Change of die

Left-hand-threaded and danger of injury by burning!
1. Heat up the machine for approx. 10 minutes.
2. Remove the welding shoe.
3. By means of a spanner, screw the die (item 12) out of the extruder cylinder.
4. Screw the new die into the extruder cylinder.
5. Loosen the die by approx. half a rotation.
6. Tighten the die definitely after 5 minutes' time, otherwise there is the danger of
damaging the brass threading of the die.
 HSK Kunststoff Schweißtechnik GmbH
brand FEIN, type 3 21 60 003 21 7
High temperature grease "Shell Retinax LX""
31