McHale
W2020
Round Bale Wrapper
54
9.3 Wrapping process
The following is the recommended method for working the wrapper on the rear three-
point linkage of a tractor. It assumes the bales are well shaped for wrapping. However
since it is impossible to allow for all differing conditions and terrain it may be necessary
for the operator to vary this procedure.
1.
Set dispenser rollers in working position.
2.
Release trip arm catch on leading dispenser.
3.
Turn on hydraulic supply and switch on the electronic control box.
4.
Select AUTO on the control box.
5.
Open out bale rotation rollers to the widest position.
6.
Reverse into bale to be wrapped.
7.
Close in bale rotation rollers fully.
8.
Press ‘AUTO START’ on the control box.
9.
The wrapper should go through a sequence as follows:
a.
The leading dispenser should extend outwards until it is located 180° from
the ‘fixed’ dispenser.
b.
Then film dispensers begin rotating and plastic film is applied to the bale.
c.
After one full revolution the cut & hold releases the film.
d.
The dispensers slow down one revolution before the end.
e.
The leading dispenser should drop back until it is again located beside the
’fixed’ dispenser. Simultaneously the cut & hold unit opens upwards to grip
the film as the dispensers complete the set number of rotations.
f.
The dispensers come to a complete stop and the cut & hold unit will lower,
gripping and cutting the film.
g.
The operator pushes the ‘rollers out’ button to release the bale and
complete the cycle.
NOTE:
All tractor movement should stop, when a bale is being released
from the rollers.
h.
During release, the bale rotation rollers open outwards. At the same time
both rollers rotate inwards, allowing the bale to rest on the ground gently.
i.
With the roller arms fully open the wrapper is now ready to receive another
bale.
10.
The cycle can then be repeated on the next bale.
WARNING: Keep out of the ‘Danger Zone’
Keep all persons outside of the ‘Danger Zone’ during all machine
operations!
NOTE: Ensure the machine is level
Adjust the top-link so that the machine is level, or tilting slightly towards
the tractor. This is to prevent the bale from gradually moving towards the
end of the rollers during wrapping, especially if dealing with misshapen
bales.