JF JF 40P, Operation & Technical Manual

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6.2- Chopper knives sharpening
This operation is more important on machine
maintenance, because aim at good performance and
durability of the knives (1).
The sharpeness should be made in such a way to
preserve the characteristics of the knives and the
tempering of the steel.
Sharpen the knives when you see that the quality of
the particles is decreasing.
Procedure:
a) Loosen the latch (2) and open cover (3) from the
motor compartment.
b) Lock the impeller (4) with a wood shim to avoid that it
turn during bolt removal (5).
c) Remove bolts and nuts (5) and remove the knives (1).
IMPORTANT: Sharpen always all the knifes!
d) Sharpen each knife with an appropriate emery,
avoiding overheting and variation on wire color. See
table below.
IMPORTANT:
- Don’t cool hot knifes with water. It can cause lashing.
- Do not sharpen the knife chamfered surface, but the
cutting edge only. Maintain the cutting angle.
Notes:
1- Hold the knifes (1) on correct position
(inclination), according picture aside, to
maintain the cutting angle.
2- Its necessary to use glasses and glooves to
make the sharpening.
3- If the knives don’t make possible more
sharpening or turning, replace the kit.
Never replace only one of the knifes.
2
3
1
5
4
1