4.04 - Blade Maintenance
WARNING: avoid possible injury. Wear proper eye and hand protection when
servicing machine blades.
It is important to change blades after
they have worn down 2.5 - 3 cm.
(1-1¼”) from
their original length. When replacing blades, it is best to replace them one at a time to
maintain the original scroll pattern. If, however, it becomes necessary to remove them
all,
it is essential to maintain the scroll pattern of the blades (see fig. 19)
. To do
this, remove one blade and immediately replace it with a new one. Be sure the bolt head
(see #3, fig. 20)
is touching the blade #4, while the washer #5 and nut #6 contact the
flange. Sometimes a locknut is used instead of a lockwasher and nut. Proceed until all
blades needed to be changed are changed.
After putting on the new blades, tighten the nuts to their proper torque specifications.
After putting on the new blades, tighten the nuts to their proper torque specifications.
To determine if a blade is right or left, do the following:
1. hold the blade in the palm of the hand with the bend pointing upward.
2. If the cutting edge points toward the right then the blade is right-handed.
3. The cutting edge pointing to the left indicates a left-handed blade.
NOTE: on the aerating rotor, all blades are the same. It is not necessary to
determine a left or right.
DANGER: proper torque must be used when tightening the blade retaining bolt. If
these safety precautions are not followed, the blade could come off during
operation and be thrown tens of meters from the machine.
M
AINTENANCE
33
R
OTOMEC
G
REEN
-R
ITE
O
PERATOR
’
S
M
ANUAL
Fig. 19
Scroll pattern on
aerating rotor
