User’s guide
HRK 65-125
-
20
-
HS
Tensioning and changing filament
10.1
SAFETY PRECAUTIONS
Before tensioning and changing the filament always take the following safety precautions:
1.
Put the foot switch into a
place where it can’t be pushed accidentally
2.
Clear the working surface
3.
Switch off the control units (switch
H
)
4.
Check that the heating elements and pressure bars in the top frame are firmly
attached
5.
Allow the heating elements to cool for at least
10
minutes
10.2
TENSIONING
1.
Turn the filament to the lowest position (only bottom heating)
2.
Hold the end of the wire on the right with pliers and undo the screw in the wire
pin (use socket screw key
no. 1
½
)
3.
Pull the wire taut with pliers and tension the spring
4.
Tighten the socket head screw firmly again
5.
Cut off the end of the filament. Always leave
8-10
mm projecting in order to be able
to tension the filament again
6.
Bend the projecting piece down
Attention! The end of t he filament is sharp.
10
