GBC Auto 50 MBM Crease - Manual (Page 13)

Perforation Wheels
The perforation wheels are located under the top cover of the machine. The outfeed tray
may be lifted clear of the machine in order to gain access to the lower shaft. By altering
the position of the wheels along their shafts, perforations can be made at any point across
the documents width. You can use the perforation wheels without needing to crease the
documents. There are also feed wheels on these shafts, and it may be necessary to alter
their positions to achieve the correct perforation position. To perform perforations away
from the centre of the paper, the order of the feed wheels and perforation wheels on the
shaft must be changed to maintain drive across the width of the document.
Location
Holes
Spring
Sprung
Locator
Bottom Wheel
Control Wheels
Top Wheel
Top Shaft
and Collar
The wheels may be raised or lowered using the sprung locator to the left end of the top
shaft. Two location holes allow easy positioning of the shaft in either the up or down
position. The shaft must be in its up position to make any alterations to the perforation
position. When lowering the top shaft, the perforation wheel must be pulled against the
spring until it is located, so that the wheels are in contact when the spring is released.
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