McHale Fusion 2 - Chopping System; Knife Pressure Gauge

McHale Fusion 2 field operation and adjustments section
9- 4
McHale Fusion 2 round baler wrapper technical service manual
Issue 1: 0208
9.6 Chopping system
The McHale Fusion 2 is equipped with a 23-knife chopping system for fine cutting. If a
coarser chop is required 11 of the knives can be removed, or all can be removed if
desired, see section 7.6 on knife removal and installation. The knife button on the
control box will move the knives into the feeding channel or retract them. It is
recommended to switch the chopping device off when baling very dry material.
Fig. 9.6.1 Chopping system.
In order to protect the chopping device against overload and damage, hydraulic
accumulators are connected to the actuation circuit. Note: To keep the knife slots clear
of material it is recommended to switch the knives on and off several times daily. To do
this, just press the knife button while the control box is in automatic mode, this will drop
the knives. Press the knife button again and the “knife on” symbol will appear and the
knifes will be reset to the on position when the next bale transfer occurs.
Figure 9.7.1. Knife pressure gauge
The knife pressure gauge, shown in figure
9.7.1. Is used to indicate the pressure
applied to the knife operating rams. When the
knives are being switched on the pressure
will rise to about 150 bar before dropping
back down to between 30 and 50 bar, this is
the green area on the knife pressure gauge.
During operation the knife pressure will be
topped up each time the chamber is closed (if
Knifes are set to on), this can be observed on
the knife pressure gauge as the pressure
reading will increase before settling again at a
pressure of between 30 and 50 bar.
9.7 Knife pressure gauge
Knife