Elektra Beckum PKF 255 V8 Operating Instruction page 16

5. Unscrew clamping collars with a second open-
end spanner.
6. Clean all clamping surfaces on blade arbor,
clamping collars and scribing blade.
A
Danger!
Do not use cleaning agents (e.g. for removing
resin residue) that could corrode the light
metal components of the saw; the stability of
the saw would be adversely affected.
7. Install clamping collars to fresh scribing blade
(direction of rotation opposite to main saw
blade).
A
Danger!
- Use only suitable saw blades (see "Techni-
cal specifications")
- Mount saw blade only using genuine parts.
- Do not use loose-fitting reducing rings; the
saw blade could work loose.
- Saw blades have to be mounted in such
way that they do not wobble or run out of
balance, and can not work loose during
operation.
8. Put dish spring assembly and clamping collars
with scribing blade onto blade arbor (direction of
rotation opposite to main saw blade!).
9. Screw arbor nut, with the low side facing the
blade, fingertight only onto the saw spindle.
A
Danger!
- Do not extent the arbor nut wrench.
- Do not tighten arbor nut by tapping on the
wrench.
10. Put scribing blade drive belt back on the pulleys.
It must be tensioned by the spring.
11. Install main saw blade and
travelling sizing table
(as described earlier).
2.14
Scribing blade setting
In order to align the scribing blade perfectly with the
main saw blade, it can be adjusted in two directions:
- up and down;
- to the left or right.
Height setting
The teeth of the scribing blade are of trapezoidal
shape – the higher it projects over the saw table the
wider the kerf. The width of the kerf must be exactly
the same as the width of the main blade's kerf
(make trial cut).
Normally the scribing blade should project 2 to 3 mil-
limetres over the saw table.
Height adjustment is done by means of a hexagon
socket head cap screw, accessible from the saw
table top.
· Hexagon socket head cap screw turned clock-
wise
= scribing blade is lowered.
· Hexagon socket head cap screw turned coun-
ter-clockwise
= scribing blade is raised.
The height setting can also be done by handwheel.
The handwheel is fitted to the other end of the hex-
agon socket head cap screw and accessible from
the underside of the saw.
Lateral alignment
Scribing blade and main saw blade must be exactly
in line (make trial cut). Checking is required after
every change of the main saw blade in particular.
1. To set loosen the chip case cover (see „Main
saw blade change").
PKF 255 V8