Caslon Zip21A Operation And Maintenance Manual page 8

Rotary Slitting / Scoring Section
The Zip21A uses slitting and/or scoring blades mounted in a removable cassette to slit the
paper as it passes through the machine.
: Before removing or installing a blade cassette, turn the main power switch to the
"OFF" position.
Remove the top cover from the machine. Remove the four Philips head-mounting screws that
secure the blade cassette, and then lift the cassette out of the machine. To install a new
cassette, reverse the process making sure the gear on the cassette matches the drive gear on
the machine. Always use all four Philips head screws when installing the blade cassette.
To adjust the cutting blade width, remove the top guard and the cassette guard and refer to the
drawing above. Set the width of the adjusting tool with the Vernier Callipers supplied. The width
"L" is equal to the width of the card less 15mm. For example, a card of 85mm wide would have
the adjusting tool set to 85-15=70mm. The total distance between the side frames is 340mm so
the distance "S" can be calculated as S=340-(3xL)-(2x21)-(2x19)÷2. In our example above this
would be "S" = 340-(3x70)-(2x21)-(2x19)÷2 = 25mm (There is a quick reference settings guide
on page 8)
Loosen the 2 screws holding each assembly and place the adjusting tool between the holders as
shown above. Slide the assemblies until they touch the adjusting tool and lock the screws. Do
not over tighten the screws.
Always work around the centre of the machine when setting the cassette
assemblies. Details of calculating this are shown above.
To correctly align the paper to the slitting/scoring blades, the infeed platform has a Left / Right
Adjustment Dial. This adjustment is simple and easy to use. A reference scale and indicator are
located on the feed tray to simplify side-to-side adjustments.
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