Hansa C27EU O&M Manual
– OM-023 Revision A 16/10/19
© Hansa Chippers 2019
12
Remove the knives for sharpening:
Open the rotor housing cover by removing
the two housing cover locking bolts with a 19
mm spanner, then lift the rotor housing cover
to access the cutting rotor. Rotate the cutting
rotor to gain access to the knives, then insert
the rotor pin (normally located under the
control panel) into the housing and through
the cut-out in the rotor to lock it in place.
Using a 24 mm spanner and a 14 mm Allen
key, remove the knives from the rotor. There
are three bolts that you must remove on
each knife to do so.
Be careful not to drop the bolts or
knives into the chipper.
A stick magnet can be used to retrieve
them if this does occur.
Measure the width of the knife and check that
it will be at least 96 mm after sharpening.
If the knives will be shorter than 105 mm,
then the knives should be replaced. Please
contact your nearest Hansa dealer.
Sharpen the knives:
Sharpen the knives on a surface grinder. A
cutting angle of 36 ° is critical for the
performance of the chipper. Make sure there is
plenty of coolant used when grinding to avoid
softening of the steel knives.
Note
: You do not need to sharpen your knives
unless both sides of the reversible knives have
been used.
1
2
3
MIN 96 mm
4
36 °
Rotor
locking pin
