Hansa C40 O&M Manual
– OM-013 Revision E 23/10/19
© Hansa Chippers 2019
11
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