McHale Orbital Round Bale Wrapper
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8.2 Wrapping behind tractor
The following is the recommended method for operating the Round Bale Wrapper
behind a tractor. It assumes the bales are well shaped for wrapping. However since it
is impossible to allow for differing conditions and terrain it may be necessary for the
operator to vary this.
1. Remove drawbar safety lock and fit to working position. (See ‘Preparing the
machine for wrapping’)
2. Adjust drawbar angle to give optimum position.
3. Ensure the bale load arm is lowered and the clamp arm opened.
4. Select Auto on control box.
5. Drive tractor up beside the bale to be wrapped. It will take practice to line up
the bale correctly with the wrapper.
6. Press AUTO LOAD (button 5) on the control box.
7. The wrapper should go through a sequence as follows:
(a) The clamp arm closes and lifts bale on to the wrapping table.
(b) The bale load arm lowers to the ground and the clamp arm opens.
(c) The dispensers start rotating and plastic film is applied to the bale.
(d) After a few revolutions the ‘Cut and Hold’ releases the film.
(e) The dispensers slow down one revolution before the end.
(f) The ‘Cut and Hold’ units move to grip the film as the dispensers complete
the set number of rotations.
(g) The dispensers come to a halt and the ‘Cut and Hold’ units extend and
retract, gripping and cutting the film.
(h) If Auto Tip is set to on, the bale is tipped off, otherwise, the operator
pushes the tip button to complete the cycle.
(i) The wrapper is now ready to receive another bale.
The machine is designed with a wrapping system which has two plastic film dispensers.
Differing from conventional wrappers, the dispensers move vertically around the bale.
Although the dispenser carrier ring is well protected by the safety guards and electrical
safety switches, the operator must ensure that all people and animals are kept out of
this region while operating the machine.
WARNING: Ensure the area is clear before operating the wrapper
Always ensure there is no person or wrapped bales in the way of the
wrapper before operating it again. Ensure that all bystanders remain
outside of the ‘Danger Zone’.
WARNING: Stop machine to unload wrapped bale
The machine should not be moving when the bale is tipped off to avoid
damage to plastic film.
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