User’s Guide
HRT 65-125
-
15
-
hs
Tensioning and changing filament
9.1
SAFETY PRECAUTIONS
Before tensioning and changing filament always take the following safety
precautions.
1.
Clear the working surface.
2.
Switch off the control units one at a
time (Switch
H
).
3.
Allow the heating elements to cool for
at least
10
minutes.
9.2
TENSIONING
1.
Turn the filament to the lowest
position
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.
Attention! The end of the filament is sharp.
9
2
Wire pin
Socket head screw
3
4
