Hansa C45 O&M Manual
–
OM-027 First Release 4/05/2021
© Hansa Chippers 2021
17
Remove the knives for sharpening:
Open the rotor cover (refer to “
cover for access to cutting rotor
” in the
” section in this manual).
Rotate the cutting rotor to gain access to the
knives, then insert the rotor locking pin (normally
located under the rotor cover pivot pin) into the
housing and through the cut-out in the rotor to
lock it in place.
Using a spanner and Allen key, remove the three
knife mounting bolts from each knife
To preserve the Allen key cut-out in the
bolt heads, loosen them by turning the nut
and holding the bolt head stationary.
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 96 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
Rotor
locking pin
2
3
MIN 96 mm
4
36 °
